Logs - typelevel/fs2 - Community Build Dashboard

1##################################

2Clonning https://github.com/typelevel/fs2.git into /build/repo using revision v2.5.13

3##################################

4Note: switching to 'edf0c4f2e660360d1c1a8c5377ce32294de89238'.

5

6You are in 'detached HEAD' state. You can look around, make experimental

7changes and commit them, and you can discard any commits you make in this

8state without impacting any branches by switching back to a branch.

9

10If you want to create a new branch to retain commits you create, you may

11do so (now or later) by using -c with the switch command. Example:

12

13 git switch -c <new-branch-name>

14

15Or undo this operation with:

16

17 git switch -

18

19Turn off this advice by setting config variable advice.detachedHead to false

20

21Using target Scala version for migration: 3.7.4-RC2

22Migrating project for -source:3.4 using Scala 3.7.4-RC2

23----

24Preparing build for 3.7.4-RC2

25Would try to apply common scalacOption (best-effort, sbt/mill only):

26Append: -rewrite,REQUIRE:-source:3.4-migration

27Remove: -indent,-no-indent,-new-syntax,,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

28----

29Starting build for 3.7.4-RC2

30Execute tests: false

31sbt project found:

32No prepare script found for project typelevel/fs2

33/opencb/project-builder/sbt/prepare-project.sh: line 107: /root/.ssh/config: No such file or directory

34##################################

35Scala version: 3.7.4-RC2

36Targets: co.fs2%fs2-core co.fs2%fs2-experimental co.fs2%fs2-io co.fs2%fs2-reactive-streams

37Project projectConfig: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"compile-only","migrationVersions":["3.4","3.7"],"sourcePatches":[]}

38##################################

39Using extra scalacOptions: -rewrite,REQUIRE:-source:3.4-migration

40Filtering out scalacOptions: -indent,-no-indent,-new-syntax,,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

41[sbt_options] declare -a sbt_options=()

42[process_args] java_version = '17'

43[copyRt] java9_rt = '/root/.sbt/1.0/java9-rt-ext-eclipse_adoptium_17_0_8/rt.jar'

44# Executing command line:

45java

46-Dfile.encoding=UTF-8

47-Xms2g

48-Xmx4g

49-XX:MaxMetaspaceSize=512m

50-Dcommunitybuild.scala=3.7.4-RC2

51-Dcommunitybuild.project.dependencies.add=

52-Xmx7G

53-Xms4G

54-Xss8M

55-Dsbt.script=/root/.sdkman/candidates/sbt/current/bin/sbt

56-Dscala.ext.dirs=/root/.sbt/1.0/java9-rt-ext-eclipse_adoptium_17_0_8

57-jar

58/root/.sdkman/candidates/sbt/1.11.5/bin/sbt-launch.jar

59"setCrossScalaVersions 3.7.4-RC2"

60"++3.7.4-RC2 -v"

61"mapScalacOptions "-rewrite,REQUIRE:-source:3.4-migration,-Wconf:msg=can be rewritten automatically under:s" "-indent,-no-indent,-new-syntax,,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e""

62"set every credentials := Nil"

63"excludeLibraryDependency com.github.ghik:zerowaste_{scalaVersion} com.olegpy:better-monadic-for_3 org.polyvariant:better-tostring_{scalaVersion} org.wartremover:wartremover_{scalaVersion}"

64"removeScalacOptionsStartingWith -P:wartremover"

65

66moduleMappings

67"runBuild 3.7.4-RC2 """{"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"compile-only","migrationVersions":["3.4","3.7"],"sourcePatches":[]}""" co.fs2%fs2-core co.fs2%fs2-experimental co.fs2%fs2-io co.fs2%fs2-reactive-streams"

68

69[info] [launcher] getting org.scala-sbt sbt 1.11.6 (this may take some time)...

70[info] welcome to sbt 1.11.6 (Eclipse Adoptium Java 17.0.8)

71[info] loading settings for project repo-build from akka.sbt, plugins.sbt...

72[info] loading project definition from /build/repo/project

73[info] compiling 2 Scala sources to /build/repo/project/target/scala-2.12/sbt-1.0/classes ...

74[info] Non-compiled module 'compiler-bridge_2.12' for Scala 2.12.20. Compiling...

75[info] Compilation completed in 8.682s.

76[info] done compiling

77[info] loading settings for project root from build.sbt...

78[info] set current project to root (in build file:/build/repo/)

79Execute setCrossScalaVersions: 3.7.4-RC2

80OpenCB::Limitting incorrect crossVersions List() -> List(2.13.16) in root/crossScalaVersions

81OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in rootNative/crossScalaVersions

82OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in rootJS/crossScalaVersions

83OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in benchmark/crossScalaVersions

84OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in rootJVM/crossScalaVersions

85OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in experimental/crossScalaVersions

86OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in reactiveStreams/crossScalaVersions

87OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in coreJS/crossScalaVersions

88OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in coreJVM/crossScalaVersions

89OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in io/crossScalaVersions

90[info] set current project to root (in build file:/build/repo/)

91[info] Setting Scala version to 3.7.4-RC2 on 9 projects.

92[info] Switching Scala version on:

93[info] experimental (3.7.4-RC2, 2.12.20, 2.13.16)

94[info] rootJS (3.7.4-RC2, 2.12.20, 2.13.16)

95[info] coreJS (3.7.4-RC2, 2.12.20, 2.13.16)

96[info] coreJVM (3.7.4-RC2, 2.12.20, 2.13.16)

97[info] rootJVM (3.7.4-RC2, 2.12.20, 2.13.16)

98[info] rootNative (3.7.4-RC2, 2.12.20, 2.13.16)

99[info] io (3.7.4-RC2, 2.12.20, 2.13.16)

100[info] reactiveStreams (3.7.4-RC2, 2.12.20, 2.13.16)

101[info] benchmark (3.7.4-RC2, 2.12.20, 2.13.16)

102[info] Excluding projects:

103[info] * root (2.13.16)

104[info] Reapplying settings...

105[info] set current project to root (in build file:/build/repo/)

106Execute mapScalacOptions: -rewrite,REQUIRE:-source:3.4-migration,-Wconf:msg=can be rewritten automatically under:s -indent,-no-indent,-new-syntax,,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

107[info] Reapplying settings...

108[info] set current project to root (in build file:/build/repo/)

109[info] Defining Global / credentials, benchmark / credentials and 8 others.

110[info] The new values will be used by allCredentials, benchmark / allCredentials and 57 others.

111[info] Run `last` for details.

112[info] Reapplying settings...

113[info] set current project to root (in build file:/build/repo/)

114Execute excludeLibraryDependency: com.github.ghik:zerowaste_{scalaVersion} com.olegpy:better-monadic-for_3 org.polyvariant:better-tostring_{scalaVersion} org.wartremover:wartremover_{scalaVersion}

115[info] Reapplying settings...

116OpenCB::Failed to reapply settings in excludeLibraryDependency: Reference to undefined setting:

117

118 Global / allExcludeDependencies from Global / allExcludeDependencies (CommunityBuildPlugin.scala:336)

119 Did you mean allExcludeDependencies ?

120 , retry without global scopes

121[info] Reapplying settings...

122[info] set current project to root (in build file:/build/repo/)

123Execute removeScalacOptionsStartingWith: -P:wartremover

124[info] Reapplying settings...

125[info] set current project to root (in build file:/build/repo/)

126[success] Total time: 0 s, completed Nov 8, 2025, 12:50:27 AM

127Build config: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"compile-only","migrationVersions":["3.4","3.7"],"sourcePatches":[]}

128Parsed config: Success(ProjectBuildConfig(ProjectsConfig(List(),Map()),CompileOnly,List()))

129Starting build...

130Projects: Set(coreJVM, experimental, io, reactiveStreams)

131Starting build for ProjectRef(file:/build/repo/,coreJVM) (fs2-core)... [0/4]

132OpenCB::Exclude Scala3 specific scalacOption `-rewrite` in Scala 2.12.20 module Global

133OpenCB::Exclude Scala3 specific scalacOption `REQUIRE:-source:3.4-migration` in Scala 2.12.20 module Global

134OpenCB::Filter out '-source:3.0-migration', matches setting pattern '^-?-source(:.*)?'

135Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -rewrite, -Wconf:msg=can be rewritten automatically under:s, -source:3.4-migration

136[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/classes ...

137[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

138[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

139[warn] 177 | @nowarn("cat=unused-params")

140[warn] | ^^^^^^^^^^^^^^^^^^^

141[warn] | Invalid message filter

142[warn] | unknown category: unused-params

143[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

144[warn] 1060 | @nowarn("cat=unused-params")

145[warn] | ^^^^^^^^^^^^^^^^^^^

146[warn] | Invalid message filter

147[warn] | unknown category: unused-params

148[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

149[warn] 1098 | @nowarn("cat=unused-params")

150[warn] | ^^^^^^^^^^^^^^^^^^^

151[warn] | Invalid message filter

152[warn] | unknown category: unused-params

153[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

154[warn] 1117 | @nowarn("cat=unused-params")

155[warn] | ^^^^^^^^^^^^^^^^^^^

156[warn] | Invalid message filter

157[warn] | unknown category: unused-params

158[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

159[warn] 2343 | @nowarn("cat=unused-params")

160[warn] | ^^^^^^^^^^^^^^^^^^^

161[warn] | Invalid message filter

162[warn] | unknown category: unused-params

163[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

164[warn] 3450 | @nowarn("cat=unused-params")

165[warn] | ^^^^^^^^^^^^^^^^^^^

166[warn] | Invalid message filter

167[warn] | unknown category: unused-params

168[warn] -- [E029] Pattern Match Exhaustivity Warning: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:98:9

169[warn] 98 | ViewL(this) match {

170[warn] | ^^^^^^^^^^^

171[warn] | match may not be exhaustive.

172[warn] |

173[warn] | It would fail on pattern case: fs2.internal.FreeC.ViewL.View(_)

174[warn] |

175[warn] | longer explanation available when compiling with `-explain`

176[warn] -- [E092] Pattern Match Unchecked Warning: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:697:17

177[warn] 697 | case output: Output[X] =>

178[warn] | ^

179[warn] |the type test for fs2.internal.FreeC.Output[X] cannot be checked at runtime because its type arguments can't be determined from fs2.internal.FreeC.Action[F, X, y]

180[warn] |

181[warn] | longer explanation available when compiling with `-explain`

182[info] [patched file /build/repo/core/shared/src/main/scala/fs2/Stream.scala]

183[info] [patched file /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala]

184[info] [patched file /build/repo/core/shared/src/main/scala/fs2/Chunk.scala]

185[info] [patched file /build/repo/core/jvm/src/main/scala/fs2/internal/AsyncByteArrayInputStream.scala]

186[info] [patched file /build/repo/core/shared/src/main/scala/fs2/Collector.scala]

187[info] [patched file /build/repo/core/shared/src/main/scala/fs2/internal/ScopedResource.scala]

188[info] [patched file /build/repo/core/shared/src/main/scala/fs2/internal/CompileScope.scala]

189[info] [patched file /build/repo/core/shared/src/main/scala/fs2/text.scala]

190[info] [patched file /build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala]

191[warn] 9 warnings found

192[info] done compiling

193[info] compiling 9 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/classes ...

194[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

195/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

196 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

197 ^

198[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

199[warn] 1060 | @nowarn("cat=unused-params")

200[warn] | ^^^^^^^^^^^^^^^^^^^

201[warn] | Invalid message filter

202[warn] | unknown category: unused-params

203[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

204[warn] 1098 | @nowarn("cat=unused-params")

205[warn] | ^^^^^^^^^^^^^^^^^^^

206[warn] | Invalid message filter

207[warn] | unknown category: unused-params

208[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

209[warn] 1117 | @nowarn("cat=unused-params")

210[warn] | ^^^^^^^^^^^^^^^^^^^

211[warn] | Invalid message filter

212[warn] | unknown category: unused-params

213[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

214[warn] 2343 | @nowarn("cat=unused-params")

215[warn] | ^^^^^^^^^^^^^^^^^^^

216[warn] | Invalid message filter

217[warn] | unknown category: unused-params

218[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

219[warn] 3450 | @nowarn("cat=unused-params")

220[warn] | ^^^^^^^^^^^^^^^^^^^

221[warn] | Invalid message filter

222[warn] | unknown category: unused-params

223[warn] -- [E029] Pattern Match Exhaustivity Warning: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:98:9

224[warn] 98 | ViewL(this) match {

225[warn] | ^^^^^^^^^^^

226[warn] | match may not be exhaustive.

227[warn] |

228[warn] | It would fail on pattern case: fs2.internal.FreeC.ViewL.View(_)

229[warn] |

230[warn] | longer explanation available when compiling with `-explain`

231[warn] -- [E092] Pattern Match Unchecked Warning: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:697:17

232[warn] 697 | case output: Output[X] =>

233[warn] | ^

234[warn] |the type test for fs2.internal.FreeC.Output[X] cannot be checked at runtime because its type arguments can't be determined from fs2.internal.FreeC.Action[F, X, y]

235[warn] |

236[warn] | longer explanation available when compiling with `-explain`

237[warn] 8 warnings found

238[info] done compiling

239[info] compiling 14 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/classes ...

240[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

241[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

242[warn] 177 | @nowarn("cat=unused-params")

243[warn] | ^^^^^^^^^^^^^^^^^^^

244[warn] | Invalid message filter

245[warn] | unknown category: unused-params

246[warn] 10 warnings found

247[info] done compiling

248[info] compiling 42 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/test-classes ...

249[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

250[info] [patched file /build/repo/core/shared/src/test/scala/fs2/ChunkSuite.scala]

251[info] [patched file /build/repo/core/shared/src/test/scala/fs2/concurrent/BroadcastSuite.scala]

252[info] [patched file /build/repo/core/shared/src/test/scala/fs2/ChunkGenerators.scala]

253[info] [patched file /build/repo/core/jvm/target/scala-3.7.4-RC2/src_managed/test/fs2/StreamDoctest.scala]

254[info] [patched file /build/repo/core/shared/src/test/scala/fs2/ChunkQueueSuite.scala]

255[info] [patched file /build/repo/core/shared/src/test/scala/fs2/TextSuite.scala]

256[warn] one warning found

257[info] done compiling

258/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

259 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

260 ^

261[info] compiling 5 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/test-classes ...

262[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

263[warn] one warning found

264[info] done compiling

265[info] compiling 42 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/test-classes ...

266[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

267[info] [patched file /build/repo/core/jvm/target/scala-3.7.4-RC2/src_managed/test/fs2/StreamDoctest.scala]

268[warn] two warnings found

269[info] done compiling

270/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

271 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

272 ^

273Starting build for ProjectRef(file:/build/repo/,experimental) (fs2-experimental)... [1/4]

274Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -rewrite, -Wconf:msg=can be rewritten automatically under:s, -source:3.4-migration

275[info] compiling 2 Scala sources to /build/repo/experimental/target/scala-3.7.4-RC2/classes ...

276[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

277[warn] one warning found

278[info] done compiling

279/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

280 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

281 ^

282/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

283 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

284 ^

285/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

286 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

287 ^

288Starting build for ProjectRef(file:/build/repo/,io) (fs2-io)... [2/4]

289Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -rewrite, -Wconf:msg=can be rewritten automatically under:s, -source:3.4-migration

290[info] compiling 27 Scala sources to /build/repo/io/target/scala-3.7.4-RC2/classes ...

291[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

292[warn] -- Warning: /build/repo/io/src/main/scala/fs2/io/file/WriteCursor.scala:96:10 --

293[warn] 96 | @nowarn("cat=unused-params")

294[warn] | ^^^^^^^^^^^^^^^^^^^

295[warn] | Invalid message filter

296[warn] | unknown category: unused-params

297[info] [patched file /build/repo/io/src/main/scala/fs2/io/file/FileHandle.scala]

298[info] [patched file /build/repo/io/src/main/scala/fs2/io/file/file.scala]

299[info] [patched file /build/repo/io/src/main/scala/fs2/io/file/Watcher.scala]

300[info] [patched file /build/repo/io/src/main/scala/fs2/io/tcp/SocketGroup.scala]

301[info] [patched file /build/repo/io/src/main/scala/fs2/io/internal/Synchronizer.scala]

302[info] [patched file /build/repo/io/src/main/scala/fs2/io/internal/PipedStreamBuffer.scala]

303[warn] two warnings found

304[info] done compiling

305[info] compiling 6 Scala sources to /build/repo/io/target/scala-3.7.4-RC2/classes ...

306[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

307/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

308 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

309 ^

310[warn] one warning found

311[info] done compiling

312[info] compiling 12 Scala sources to /build/repo/io/target/scala-3.7.4-RC2/test-classes ...

313[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

314[warn] one warning found

315[info] done compiling

316/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

317 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

318 ^

319/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

320 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

321 ^

322Starting build for ProjectRef(file:/build/repo/,reactiveStreams) (fs2-reactive-streams)... [3/4]

323Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -rewrite, -Wconf:msg=can be rewritten automatically under:s, -source:3.4-migration

324[info] compiling 4 Scala sources to /build/repo/reactive-streams/target/scala-3.7.4-RC2/classes ...

325[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

326[info] [patched file /build/repo/reactive-streams/src/main/scala/fs2/interop/reactivestreams/StreamUnicastPublisher.scala]

327[warn] one warning found

328[info] done compiling

329/build/repo/reactive-streams/src/main/scala/fs2/interop/reactivestreams/StreamUnicastPublisher.scala:39: error: ] expected but >: found

330 def subscribe(subscriber: Subscriber[? >: A]): Unit = {

331 ^

332[info] compiling 1 Scala source to /build/repo/reactive-streams/target/scala-3.7.4-RC2/classes ...

333[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

334[warn] one warning found

335[info] done compiling

336/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

337 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

338 ^

339[info] compiling 6 Scala sources to /build/repo/reactive-streams/target/scala-3.7.4-RC2/test-classes ...

340[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

341[info] [patched file /build/repo/reactive-streams/src/test/scala/fs2/interop/reactivestreams/SubscriberStabilitySpec.scala]

342[info] [patched file /build/repo/reactive-streams/src/test/scala/fs2/interop/reactivestreams/StreamUnicastPublisherSpec.scala]

343[info] [patched file /build/repo/reactive-streams/src/test/scala/fs2/interop/reactivestreams/SubscriberSpec.scala]

344[warn] one warning found

345[info] done compiling

346/build/repo/reactive-streams/src/main/scala/fs2/interop/reactivestreams/StreamUnicastPublisher.scala:39: error: ] expected but >: found

347 def subscribe(subscriber: Subscriber[? >: A]): Unit = {

348 ^

349/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

350 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

351 ^

352[info] compiling 3 Scala sources to /build/repo/reactive-streams/target/scala-3.7.4-RC2/test-classes ...

353[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

354[warn] one warning found

355[info] done compiling

356/build/repo/reactive-streams/src/main/scala/fs2/interop/reactivestreams/StreamUnicastPublisher.scala:39: error: ] expected but >: found

357 def subscribe(subscriber: Subscriber[? >: A]): Unit = {

358 ^

359/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

360 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

361 ^

362

363************************

364Build summary:

365[{

366 "module": "fs2-core",

367 "compile": {"status": "ok", "tookMs": 27911, "warnings": 8, "errors": 0, "sourceVersion": "3.4-migration"},

368 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

369 "test-compile": {"status": "ok", "tookMs": 35270, "warnings": 0, "errors": 0, "sourceVersion": "3.4-migration"},

370 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

371 "publish": {"status": "skipped", "tookMs": 0},

372 "metadata": {

373 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

374}

375},{

376 "module": "fs2-experimental",

377 "compile": {"status": "ok", "tookMs": 595, "warnings": 0, "errors": 0, "sourceVersion": "3.4-migration"},

378 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

379 "test-compile": {"status": "ok", "tookMs": 1308, "warnings": 0, "errors": 0, "sourceVersion": "3.4-migration"},

380 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

381 "publish": {"status": "skipped", "tookMs": 0},

382 "metadata": {

383 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

384}

385},{

386 "module": "fs2-io",

387 "compile": {"status": "ok", "tookMs": 2409, "warnings": 1, "errors": 0, "sourceVersion": "3.4-migration"},

388 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

389 "test-compile": {"status": "ok", "tookMs": 3225, "warnings": 0, "errors": 0, "sourceVersion": "3.4-migration"},

390 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

391 "publish": {"status": "skipped", "tookMs": 0},

392 "metadata": {

393 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

394}

395},{

396 "module": "fs2-reactive-streams",

397 "compile": {"status": "ok", "tookMs": 1062, "warnings": 0, "errors": 0, "sourceVersion": "3.4-migration"},

398 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

399 "test-compile": {"status": "ok", "tookMs": 2070, "warnings": 0, "errors": 0, "sourceVersion": "3.4-migration"},

400 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

401 "publish": {"status": "skipped", "tookMs": 0},

402 "metadata": {

403 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

404}

405}]

406************************

407[success] Total time: 116 s (0:01:56.0), completed Nov 8, 2025, 12:52:23 AM

408[0JChecking patch project/plugins.sbt...

409Checking patch build.sbt...

410Applied patch project/plugins.sbt cleanly.

411Applied patch build.sbt cleanly.

412Commit migration rewrites

413Switched to a new branch 'opencb/migrate-source-3.4'

414[opencb/migrate-source-3.4 2feff7f7c] Apply Scala compiler rewrites using -source:3.4-migration using Scala 3.7.4-RC2

415 24 files changed, 111 insertions(+), 111 deletions(-)

416Using target Scala version for migration: 3.7.4-RC2

417Migrating project for -source:3.7 using Scala 3.7.4-RC2

418----

419Preparing build for 3.7.4-RC2

420Would try to apply common scalacOption (best-effort, sbt/mill only):

421Append: -rewrite,REQUIRE:-source:3.7-migration

422Remove: -indent,-no-indent,-new-syntax,,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

423----

424Starting build for 3.7.4-RC2

425Execute tests: false

426sbt project found:

427No prepare script found for project typelevel/fs2

428/opencb/project-builder/sbt/prepare-project.sh: line 107: /root/.ssh/config: No such file or directory

429##################################

430Scala version: 3.7.4-RC2

431Targets: co.fs2%fs2-core co.fs2%fs2-experimental co.fs2%fs2-io co.fs2%fs2-reactive-streams

432Project projectConfig: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"compile-only","migrationVersions":["3.4","3.7"],"sourcePatches":[]}

433##################################

434Using extra scalacOptions: -rewrite,REQUIRE:-source:3.7-migration

435Filtering out scalacOptions: -indent,-no-indent,-new-syntax,,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

436[sbt_options] declare -a sbt_options=()

437[process_args] java_version = '17'

438[copyRt] java9_rt = '/root/.sbt/1.0/java9-rt-ext-eclipse_adoptium_17_0_8/rt.jar'

439# Executing command line:

440java

441-Dfile.encoding=UTF-8

442-Xms2g

443-Xmx4g

444-XX:MaxMetaspaceSize=512m

445-Dcommunitybuild.scala=3.7.4-RC2

446-Dcommunitybuild.project.dependencies.add=

447-Xmx7G

448-Xms4G

449-Xss8M

450-Dsbt.script=/root/.sdkman/candidates/sbt/current/bin/sbt

451-Dscala.ext.dirs=/root/.sbt/1.0/java9-rt-ext-eclipse_adoptium_17_0_8

452-jar

453/root/.sdkman/candidates/sbt/1.11.5/bin/sbt-launch.jar

454"setCrossScalaVersions 3.7.4-RC2"

455"++3.7.4-RC2 -v"

456"mapScalacOptions "-rewrite,REQUIRE:-source:3.7-migration,-Wconf:msg=can be rewritten automatically under:s" "-indent,-no-indent,-new-syntax,,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e""

457"set every credentials := Nil"

458"excludeLibraryDependency com.github.ghik:zerowaste_{scalaVersion} com.olegpy:better-monadic-for_3 org.polyvariant:better-tostring_{scalaVersion} org.wartremover:wartremover_{scalaVersion}"

459"removeScalacOptionsStartingWith -P:wartremover"

460

461moduleMappings

462"runBuild 3.7.4-RC2 """{"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"compile-only","migrationVersions":["3.4","3.7"],"sourcePatches":[]}""" co.fs2%fs2-core co.fs2%fs2-experimental co.fs2%fs2-io co.fs2%fs2-reactive-streams"

463

464[info] welcome to sbt 1.11.6 (Eclipse Adoptium Java 17.0.8)

465[info] loading settings for project repo-build from akka.sbt, plugins.sbt...

466[info] loading project definition from /build/repo/project

467[info] loading settings for project root from build.sbt...

468[info] set current project to root (in build file:/build/repo/)

469Execute setCrossScalaVersions: 3.7.4-RC2

470OpenCB::Limitting incorrect crossVersions List() -> List(2.13.16) in root/crossScalaVersions

471OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in benchmark/crossScalaVersions

472OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in rootNative/crossScalaVersions

473OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in rootJVM/crossScalaVersions

474OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in rootJS/crossScalaVersions

475OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in experimental/crossScalaVersions

476OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in coreJVM/crossScalaVersions

477OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in reactiveStreams/crossScalaVersions

478OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in coreJS/crossScalaVersions

479OpenCB::Changing crossVersion 3.0.2 -> 3.7.4-RC2 in io/crossScalaVersions

480[info] set current project to root (in build file:/build/repo/)

481[info] Setting Scala version to 3.7.4-RC2 on 9 projects.

482[info] Switching Scala version on:

483[info] experimental (3.7.4-RC2, 2.12.20, 2.13.16)

484[info] rootJS (3.7.4-RC2, 2.12.20, 2.13.16)

485[info] coreJS (3.7.4-RC2, 2.12.20, 2.13.16)

486[info] coreJVM (3.7.4-RC2, 2.12.20, 2.13.16)

487[info] rootJVM (3.7.4-RC2, 2.12.20, 2.13.16)

488[info] rootNative (3.7.4-RC2, 2.12.20, 2.13.16)

489[info] io (3.7.4-RC2, 2.12.20, 2.13.16)

490[info] reactiveStreams (3.7.4-RC2, 2.12.20, 2.13.16)

491[info] benchmark (3.7.4-RC2, 2.12.20, 2.13.16)

492[info] Excluding projects:

493[info] * root (2.13.16)

494[info] Reapplying settings...

495[info] set current project to root (in build file:/build/repo/)

496Execute mapScalacOptions: -rewrite,REQUIRE:-source:3.7-migration,-Wconf:msg=can be rewritten automatically under:s -indent,-no-indent,-new-syntax,,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

497[info] Reapplying settings...

498[info] set current project to root (in build file:/build/repo/)

499[info] Defining Global / credentials, benchmark / credentials and 8 others.

500[info] The new values will be used by allCredentials, benchmark / allCredentials and 57 others.

501[info] Run `last` for details.

502[info] Reapplying settings...

503[info] set current project to root (in build file:/build/repo/)

504Execute excludeLibraryDependency: com.github.ghik:zerowaste_{scalaVersion} com.olegpy:better-monadic-for_3 org.polyvariant:better-tostring_{scalaVersion} org.wartremover:wartremover_{scalaVersion}

505[info] Reapplying settings...

506OpenCB::Failed to reapply settings in excludeLibraryDependency: Reference to undefined setting:

507

508 Global / allExcludeDependencies from Global / allExcludeDependencies (CommunityBuildPlugin.scala:336)

509 Did you mean allExcludeDependencies ?

510 , retry without global scopes

511[info] Reapplying settings...

512[info] set current project to root (in build file:/build/repo/)

513Execute removeScalacOptionsStartingWith: -P:wartremover

514[info] Reapplying settings...

515[info] set current project to root (in build file:/build/repo/)

516[success] Total time: 0 s, completed Nov 8, 2025, 12:52:38 AM

517Build config: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"compile-only","migrationVersions":["3.4","3.7"],"sourcePatches":[]}

518Parsed config: Success(ProjectBuildConfig(ProjectsConfig(List(),Map()),CompileOnly,List()))

519Starting build...

520Projects: Set(coreJVM, experimental, io, reactiveStreams)

521Starting build for ProjectRef(file:/build/repo/,coreJVM) (fs2-core)... [0/4]

522OpenCB::Exclude Scala3 specific scalacOption `-rewrite` in Scala 2.12.20 module Global

523OpenCB::Exclude Scala3 specific scalacOption `REQUIRE:-source:3.7-migration` in Scala 2.12.20 module Global

524OpenCB::Filter out '-source:3.0-migration', matches setting pattern '^-?-source(:.*)?'

525Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -rewrite, -Wconf:msg=can be rewritten automatically under:s, -source:3.7-migration

526[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/classes ...

527[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

528[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

529[warn] 177 | @nowarn("cat=unused-params")

530[warn] | ^^^^^^^^^^^^^^^^^^^

531[warn] | Invalid message filter

532[warn] | unknown category: unused-params

533[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

534[warn] 1060 | @nowarn("cat=unused-params")

535[warn] | ^^^^^^^^^^^^^^^^^^^

536[warn] | Invalid message filter

537[warn] | unknown category: unused-params

538[warn] -- [E205] Potential Issue Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1062:26

539[warn] 1062 | evalMapChunk(o => f(o).as(o))

540[warn] | ^

541[warn] | Given search preference for cats.Functor[F2] between alternatives

542[warn] | (evidence$2 : cats.Applicative[F2])

543[warn] | and

544[warn] | (evidence$1 : cats.Functor[F2])

545[warn] | has changed.

546[warn] | Previous choice : the first alternative

547[warn] | Choice from Scala 3.7 : the second alternative

548[warn] |

549[warn] | Suppress this warning by choosing -source 3.5, -source 3.7, or

550[warn] | by using @annotation.nowarn("id=205")

551[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

552[warn] 1098 | @nowarn("cat=unused-params")

553[warn] | ^^^^^^^^^^^^^^^^^^^

554[warn] | Invalid message filter

555[warn] | unknown category: unused-params

556[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

557[warn] 1117 | @nowarn("cat=unused-params")

558[warn] | ^^^^^^^^^^^^^^^^^^^

559[warn] | Invalid message filter

560[warn] | unknown category: unused-params

561[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

562[warn] 2343 | @nowarn("cat=unused-params")

563[warn] | ^^^^^^^^^^^^^^^^^^^

564[warn] | Invalid message filter

565[warn] | unknown category: unused-params

566[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

567[warn] 3450 | @nowarn("cat=unused-params")

568[warn] | ^^^^^^^^^^^^^^^^^^^

569[warn] | Invalid message filter

570[warn] | unknown category: unused-params

571[warn] -- [E029] Pattern Match Exhaustivity Warning: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:98:9

572[warn] 98 | ViewL(this) match {

573[warn] | ^^^^^^^^^^^

574[warn] | match may not be exhaustive.

575[warn] |

576[warn] | It would fail on pattern case: fs2.internal.FreeC.ViewL.View(_)

577[warn] |

578[warn] | longer explanation available when compiling with `-explain`

579[warn] -- [E092] Pattern Match Unchecked Warning: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:697:17

580[warn] 697 | case output: Output[X] =>

581[warn] | ^

582[warn] |the type test for fs2.internal.FreeC.Output[X] cannot be checked at runtime because its type arguments can't be determined from fs2.internal.FreeC.Action[F, X, y]

583[warn] |

584[warn] | longer explanation available when compiling with `-explain`

585[info] [patched file /build/repo/core/jvm/src/main/scala/fs2/compression.scala]

586[info] [patched file /build/repo/core/jvm/src/main/scala/fs2/compress.scala]

587[info] [patched file /build/repo/core/shared/src/main/scala/fs2/Stream.scala]

588[warn] 10 warnings found

589[info] done compiling

590[info] compiling 3 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/classes ...

591[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

592/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

593 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

594 ^

595/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

596 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

597 ^

598[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

599[warn] 1060 | @nowarn("cat=unused-params")

600[warn] | ^^^^^^^^^^^^^^^^^^^

601[warn] | Invalid message filter

602[warn] | unknown category: unused-params

603[warn] -- [E205] Potential Issue Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1062:26

604[warn] 1062 | evalMapChunk(o => f(o).as(o))

605[warn] | ^

606[warn] | Given search preference for cats.Functor[F2] between alternatives

607[warn] | (evidence$2 : cats.Applicative[F2])

608[warn] | and

609[warn] | (evidence$1 : cats.Functor[F2])

610[warn] | has changed.

611[warn] | Previous choice : the first alternative

612[warn] | Choice from Scala 3.7 : the second alternative

613[warn] |

614[warn] | Suppress this warning by choosing -source 3.5, -source 3.7, or

615[warn] | by using @annotation.nowarn("id=205")

616[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

617[warn] 1098 | @nowarn("cat=unused-params")

618[warn] | ^^^^^^^^^^^^^^^^^^^

619[warn] | Invalid message filter

620[warn] | unknown category: unused-params

621[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

622[warn] 1117 | @nowarn("cat=unused-params")

623[warn] | ^^^^^^^^^^^^^^^^^^^

624[warn] | Invalid message filter

625[warn] | unknown category: unused-params

626[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

627[warn] 2343 | @nowarn("cat=unused-params")

628[warn] | ^^^^^^^^^^^^^^^^^^^

629[warn] | Invalid message filter

630[warn] | unknown category: unused-params

631[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

632[warn] 3450 | @nowarn("cat=unused-params")

633[warn] | ^^^^^^^^^^^^^^^^^^^

634[warn] | Invalid message filter

635[warn] | unknown category: unused-params

636[warn] 7 warnings found

637[info] done compiling

638[info] compiling 41 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/test-classes ...

639[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

640[info] [patched file /build/repo/core/shared/src/test/scala/fs2/StreamZipSuite.scala]

641[info] [patched file /build/repo/core/shared/src/test/scala/fs2/Fs2Suite.scala]

642[warn] one warning found

643[info] done compiling

644/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

645 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

646 ^

647/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

648 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

649 ^

650[info] compiling 2 Scala sources to /build/repo/core/jvm/target/scala-3.7.4-RC2/test-classes ...

651[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

652[warn] one warning found

653[info] done compiling

654/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

655 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

656 ^

657/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

658 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

659 ^

660Starting build for ProjectRef(file:/build/repo/,experimental) (fs2-experimental)... [1/4]

661Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -rewrite, -Wconf:msg=can be rewritten automatically under:s, -source:3.7-migration

662[info] compiling 2 Scala sources to /build/repo/experimental/target/scala-3.7.4-RC2/classes ...

663[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

664[warn] one warning found

665[info] done compiling

666/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

667 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

668 ^

669/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

670 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

671 ^

672/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

673 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

674 ^

675/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

676 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

677 ^

678/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

679 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

680 ^

681/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

682 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

683 ^

684Starting build for ProjectRef(file:/build/repo/,io) (fs2-io)... [2/4]

685Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -rewrite, -Wconf:msg=can be rewritten automatically under:s, -source:3.7-migration

686[info] compiling 27 Scala sources to /build/repo/io/target/scala-3.7.4-RC2/classes ...

687[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

688[warn] -- Warning: /build/repo/io/src/main/scala/fs2/io/file/WriteCursor.scala:96:10 --

689[warn] 96 | @nowarn("cat=unused-params")

690[warn] | ^^^^^^^^^^^^^^^^^^^

691[warn] | Invalid message filter

692[warn] | unknown category: unused-params

693[warn] two warnings found

694[info] done compiling

695/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

696 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

697 ^

698/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

699 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

700 ^

701[info] compiling 12 Scala sources to /build/repo/io/target/scala-3.7.4-RC2/test-classes ...

702[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

703[warn] -- Warning: /build/repo/io/src/test/scala/fs2/io/IoSuite.scala:152:59 ----------

704[warn] 152 | Shrink.xmap[Int, ChunkSize](ChunkSize(_), _.value) {

705[warn] | ^

706[warn] |Implicit parameters should be provided with a `using` clause.

707[warn] |To disable the warning, please use the following option:

708[warn] | "-Wconf:msg=Implicit parameters should be provided with a `using` clause:s"

709[warn] 153 | Shrink.shrinkIntegral[Int].suchThat(_ > defaultPipedInputStreamBufferSize)

710[warn] 154 | }

711[warn] two warnings found

712[info] done compiling

713/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

714 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

715 ^

716/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

717 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

718 ^

719/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

720 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

721 ^

722/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

723 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

724 ^

725Starting build for ProjectRef(file:/build/repo/,reactiveStreams) (fs2-reactive-streams)... [3/4]

726Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -rewrite, -Wconf:msg=can be rewritten automatically under:s, -source:3.7-migration

727[info] compiling 4 Scala sources to /build/repo/reactive-streams/target/scala-3.7.4-RC2/classes ...

728[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

729[warn] one warning found

730[info] done compiling

731/build/repo/reactive-streams/src/main/scala/fs2/interop/reactivestreams/StreamUnicastPublisher.scala:39: error: ] expected but >: found

732 def subscribe(subscriber: Subscriber[? >: A]): Unit = {

733 ^

734/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

735 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

736 ^

737/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

738 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

739 ^

740[info] compiling 6 Scala sources to /build/repo/reactive-streams/target/scala-3.7.4-RC2/test-classes ...

741[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

742[warn] one warning found

743[info] done compiling

744/build/repo/reactive-streams/src/main/scala/fs2/interop/reactivestreams/StreamUnicastPublisher.scala:39: error: ] expected but >: found

745 def subscribe(subscriber: Subscriber[? >: A]): Unit = {

746 ^

747/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

748 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

749 ^

750/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

751 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

752 ^

753/build/repo/reactive-streams/src/main/scala/fs2/interop/reactivestreams/StreamUnicastPublisher.scala:39: error: ] expected but >: found

754 def subscribe(subscriber: Subscriber[? >: A]): Unit = {

755 ^

756/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

757 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

758 ^

759/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

760 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

761 ^

762

763************************

764Build summary:

765[{

766 "module": "fs2-core",

767 "compile": {"status": "ok", "tookMs": 26792, "warnings": 9, "errors": 0, "sourceVersion": "3.7-migration"},

768 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

769 "test-compile": {"status": "ok", "tookMs": 23029, "warnings": 0, "errors": 0, "sourceVersion": "3.7-migration"},

770 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

771 "publish": {"status": "skipped", "tookMs": 0},

772 "metadata": {

773 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

774}

775},{

776 "module": "fs2-experimental",

777 "compile": {"status": "ok", "tookMs": 823, "warnings": 0, "errors": 0, "sourceVersion": "3.7-migration"},

778 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

779 "test-compile": {"status": "ok", "tookMs": 862, "warnings": 0, "errors": 0, "sourceVersion": "3.7-migration"},

780 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

781 "publish": {"status": "skipped", "tookMs": 0},

782 "metadata": {

783 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

784}

785},{

786 "module": "fs2-io",

787 "compile": {"status": "ok", "tookMs": 3093, "warnings": 1, "errors": 0, "sourceVersion": "3.7-migration"},

788 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

789 "test-compile": {"status": "ok", "tookMs": 2667, "warnings": 1, "errors": 0, "sourceVersion": "3.7-migration"},

790 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

791 "publish": {"status": "skipped", "tookMs": 0},

792 "metadata": {

793 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

794}

795},{

796 "module": "fs2-reactive-streams",

797 "compile": {"status": "ok", "tookMs": 1228, "warnings": 0, "errors": 0, "sourceVersion": "3.7-migration"},

798 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

799 "test-compile": {"status": "ok", "tookMs": 2118, "warnings": 0, "errors": 0, "sourceVersion": "3.7-migration"},

800 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

801 "publish": {"status": "skipped", "tookMs": 0},

802 "metadata": {

803 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

804}

805}]

806************************

807[success] Total time: 72 s (0:01:12.0), completed Nov 8, 2025, 12:53:50 AM

808[0JChecking patch project/plugins.sbt...

809Checking patch build.sbt...

810Applied patch project/plugins.sbt cleanly.

811Applied patch build.sbt cleanly.

812Commit migration rewrites

813Switched to a new branch 'opencb/migrate-source-3.7'

814[opencb/migrate-source-3.7 7ae80650a] Apply Scala compiler rewrites using -source:3.7-migration using Scala 3.7.4-RC2

815 5 files changed, 10 insertions(+), 10 deletions(-)

816----

817Preparing build for 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY

818Scala binary version found: 3.8

819Implicitly using source version 3.8

820Scala binary version found: 3.8

821Implicitly using source version 3.8

822Would try to apply common scalacOption (best-effort, sbt/mill only):

823Append: ,REQUIRE:-source:3.8

824Remove: ,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

825----

826Starting build for 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY

827Execute tests: false

828sbt project found:

829No prepare script found for project typelevel/fs2

830/opencb/project-builder/sbt/prepare-project.sh: line 107: /root/.ssh/config: No such file or directory

831##################################

832Scala version: 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY

833Targets: co.fs2%fs2-core co.fs2%fs2-experimental co.fs2%fs2-io co.fs2%fs2-reactive-streams

834Project projectConfig: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"compile-only","migrationVersions":["3.4","3.7"],"sourcePatches":[]}

835##################################

836Using extra scalacOptions: ,REQUIRE:-source:3.8

837Filtering out scalacOptions: ,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

838[sbt_options] declare -a sbt_options=()

839[process_args] java_version = '17'

840[copyRt] java9_rt = '/root/.sbt/1.0/java9-rt-ext-eclipse_adoptium_17_0_8/rt.jar'

841# Executing command line:

842java

843-Dfile.encoding=UTF-8

844-Xms2g

845-Xmx4g

846-XX:MaxMetaspaceSize=512m

847-Dcommunitybuild.scala=3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY

848-Dcommunitybuild.project.dependencies.add=

849-Xmx7G

850-Xms4G

851-Xss8M

852-Dsbt.script=/root/.sdkman/candidates/sbt/current/bin/sbt

853-Dscala.ext.dirs=/root/.sbt/1.0/java9-rt-ext-eclipse_adoptium_17_0_8

854-jar

855/root/.sdkman/candidates/sbt/1.11.5/bin/sbt-launch.jar

856"setCrossScalaVersions 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY"

857"++3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY -v"

858"mapScalacOptions ",REQUIRE:-source:3.8,-Wconf:msg=can be rewritten automatically under:s" ",-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e""

859"set every credentials := Nil"

860"excludeLibraryDependency com.github.ghik:zerowaste_{scalaVersion} com.olegpy:better-monadic-for_3 org.polyvariant:better-tostring_{scalaVersion} org.wartremover:wartremover_{scalaVersion}"

861"removeScalacOptionsStartingWith -P:wartremover"

862

863moduleMappings

864"runBuild 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY """{"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"compile-only","migrationVersions":["3.4","3.7"],"sourcePatches":[]}""" co.fs2%fs2-core co.fs2%fs2-experimental co.fs2%fs2-io co.fs2%fs2-reactive-streams"

865

866[info] welcome to sbt 1.11.6 (Eclipse Adoptium Java 17.0.8)

867[info] loading settings for project repo-build from akka.sbt, plugins.sbt...

868[info] loading project definition from /build/repo/project

869[info] loading settings for project root from build.sbt...

870[info] set current project to root (in build file:/build/repo/)

871Execute setCrossScalaVersions: 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY

872OpenCB::Limitting incorrect crossVersions List() -> List(2.13.16) in root/crossScalaVersions

873OpenCB::Changing crossVersion 3.0.2 -> 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY in rootJVM/crossScalaVersions

874OpenCB::Changing crossVersion 3.0.2 -> 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY in rootJS/crossScalaVersions

875OpenCB::Changing crossVersion 3.0.2 -> 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY in benchmark/crossScalaVersions

876OpenCB::Changing crossVersion 3.0.2 -> 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY in rootNative/crossScalaVersions

877OpenCB::Changing crossVersion 3.0.2 -> 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY in experimental/crossScalaVersions

878OpenCB::Changing crossVersion 3.0.2 -> 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY in coreJVM/crossScalaVersions

879OpenCB::Changing crossVersion 3.0.2 -> 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY in reactiveStreams/crossScalaVersions

880OpenCB::Changing crossVersion 3.0.2 -> 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY in coreJS/crossScalaVersions

881OpenCB::Changing crossVersion 3.0.2 -> 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY in io/crossScalaVersions

882[info] set current project to root (in build file:/build/repo/)

883[info] Setting Scala version to 3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY on 9 projects.

884[info] Switching Scala version on:

885[info] experimental (3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY, 2.12.20, 2.13.16)

886[info] rootJS (3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY, 2.12.20, 2.13.16)

887[info] coreJS (3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY, 2.12.20, 2.13.16)

888[info] coreJVM (3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY, 2.12.20, 2.13.16)

889[info] rootJVM (3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY, 2.12.20, 2.13.16)

890[info] rootNative (3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY, 2.12.20, 2.13.16)

891[info] io (3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY, 2.12.20, 2.13.16)

892[info] reactiveStreams (3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY, 2.12.20, 2.13.16)

893[info] benchmark (3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY, 2.12.20, 2.13.16)

894[info] Excluding projects:

895[info] * root (2.13.16)

896[info] Reapplying settings...

897[info] set current project to root (in build file:/build/repo/)

898Execute mapScalacOptions: ,REQUIRE:-source:3.8,-Wconf:msg=can be rewritten automatically under:s ,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

899[info] Reapplying settings...

900[info] set current project to root (in build file:/build/repo/)

901[info] Defining Global / credentials, benchmark / credentials and 8 others.

902[info] The new values will be used by allCredentials, benchmark / allCredentials and 57 others.

903[info] Run `last` for details.

904[info] Reapplying settings...

905[info] set current project to root (in build file:/build/repo/)

906Execute excludeLibraryDependency: com.github.ghik:zerowaste_{scalaVersion} com.olegpy:better-monadic-for_3 org.polyvariant:better-tostring_{scalaVersion} org.wartremover:wartremover_{scalaVersion}

907[info] Reapplying settings...

908OpenCB::Failed to reapply settings in excludeLibraryDependency: Reference to undefined setting:

909

910 Global / allExcludeDependencies from Global / allExcludeDependencies (CommunityBuildPlugin.scala:336)

911 Did you mean allExcludeDependencies ?

912 , retry without global scopes

913[info] Reapplying settings...

914[info] set current project to root (in build file:/build/repo/)

915Execute removeScalacOptionsStartingWith: -P:wartremover

916[info] Reapplying settings...

917[info] set current project to root (in build file:/build/repo/)

918[success] Total time: 0 s, completed Nov 8, 2025, 12:54:05 AM

919Build config: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"compile-only","migrationVersions":["3.4","3.7"],"sourcePatches":[]}

920Parsed config: Success(ProjectBuildConfig(ProjectsConfig(List(),Map()),CompileOnly,List()))

921Starting build...

922Projects: Set(coreJVM, experimental, io, reactiveStreams)

923Starting build for ProjectRef(file:/build/repo/,coreJVM) (fs2-core)... [0/4]

924OpenCB::Exclude Scala3 specific scalacOption `REQUIRE:-source:3.8` in Scala 2.12.20 module Global

925OpenCB::Filter out '-source:3.0-migration', matches setting pattern '^-?-source(:.*)?'

926Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -Wconf:msg=can be rewritten automatically under:s, -source:3.8

927[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

928[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

929[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

930[warn] 177 | @nowarn("cat=unused-params")

931[warn] | ^^^^^^^^^^^^^^^^^^^

932[warn] | Invalid message filter

933[warn] | unknown category: unused-params

934[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

935[warn] 1060 | @nowarn("cat=unused-params")

936[warn] | ^^^^^^^^^^^^^^^^^^^

937[warn] | Invalid message filter

938[warn] | unknown category: unused-params

939[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

940[warn] 1098 | @nowarn("cat=unused-params")

941[warn] | ^^^^^^^^^^^^^^^^^^^

942[warn] | Invalid message filter

943[warn] | unknown category: unused-params

944[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

945[warn] 1117 | @nowarn("cat=unused-params")

946[warn] | ^^^^^^^^^^^^^^^^^^^

947[warn] | Invalid message filter

948[warn] | unknown category: unused-params

949[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

950[warn] 2343 | @nowarn("cat=unused-params")

951[warn] | ^^^^^^^^^^^^^^^^^^^

952[warn] | Invalid message filter

953[warn] | unknown category: unused-params

954[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

955[warn] 3450 | @nowarn("cat=unused-params")

956[warn] | ^^^^^^^^^^^^^^^^^^^

957[warn] | Invalid message filter

958[warn] | unknown category: unused-params

959[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

960[error] 687 | case g: GetScope[_] => g

961[error] | ^

962[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

963[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

964[error] |

965[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

966[error] | G is a type in method translate with bounds <: [_²] =>> Any

967[error] | R is a type in class AlgEffect

968[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

969[error] |

970[error] | longer explanation available when compiling with `-explain`

971[warn] 7 warnings found

972[error] one error found

973[error] (coreJVM / Compile / compileIncremental) Compilation failed

974[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

975[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

976/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

977 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

978 ^

979[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

980[warn] 177 | @nowarn("cat=unused-params")

981[warn] | ^^^^^^^^^^^^^^^^^^^

982[warn] | Invalid message filter

983[warn] | unknown category: unused-params

984/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

985 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

986 ^

987[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

988[warn] 1060 | @nowarn("cat=unused-params")

989[warn] | ^^^^^^^^^^^^^^^^^^^

990[warn] | Invalid message filter

991[warn] | unknown category: unused-params

992[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

993[warn] 1098 | @nowarn("cat=unused-params")

994[warn] | ^^^^^^^^^^^^^^^^^^^

995[warn] | Invalid message filter

996[warn] | unknown category: unused-params

997[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

998[warn] 1117 | @nowarn("cat=unused-params")

999[warn] | ^^^^^^^^^^^^^^^^^^^

1000[warn] | Invalid message filter

1001[warn] | unknown category: unused-params

1002[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1003[warn] 2343 | @nowarn("cat=unused-params")

1004[warn] | ^^^^^^^^^^^^^^^^^^^

1005[warn] | Invalid message filter

1006[warn] | unknown category: unused-params

1007[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1008[warn] 3450 | @nowarn("cat=unused-params")

1009[warn] | ^^^^^^^^^^^^^^^^^^^

1010[warn] | Invalid message filter

1011[warn] | unknown category: unused-params

1012[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1013[error] 687 | case g: GetScope[_] => g

1014[error] | ^

1015[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1016[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1017[error] |

1018[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1019[error] | G is a type in method translate with bounds <: [_²] =>> Any

1020[error] | R is a type in class AlgEffect

1021[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1022[error] |

1023[error] | longer explanation available when compiling with `-explain`

1024[warn] 7 warnings found

1025[error] one error found

1026[error] (coreJVM / Compile / compileIncremental) Compilation failed

1027[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1028[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1029/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

1030 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

1031 ^

1032/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

1033 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

1034 ^

1035[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1036[warn] 177 | @nowarn("cat=unused-params")

1037[warn] | ^^^^^^^^^^^^^^^^^^^

1038[warn] | Invalid message filter

1039[warn] | unknown category: unused-params

1040[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1041[warn] 1060 | @nowarn("cat=unused-params")

1042[warn] | ^^^^^^^^^^^^^^^^^^^

1043[warn] | Invalid message filter

1044[warn] | unknown category: unused-params

1045[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1046[warn] 1098 | @nowarn("cat=unused-params")

1047[warn] | ^^^^^^^^^^^^^^^^^^^

1048[warn] | Invalid message filter

1049[warn] | unknown category: unused-params

1050[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1051[warn] 1117 | @nowarn("cat=unused-params")

1052[warn] | ^^^^^^^^^^^^^^^^^^^

1053[warn] | Invalid message filter

1054[warn] | unknown category: unused-params

1055[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1056[warn] 2343 | @nowarn("cat=unused-params")

1057[warn] | ^^^^^^^^^^^^^^^^^^^

1058[warn] | Invalid message filter

1059[warn] | unknown category: unused-params

1060[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1061[warn] 3450 | @nowarn("cat=unused-params")

1062[warn] | ^^^^^^^^^^^^^^^^^^^

1063[warn] | Invalid message filter

1064[warn] | unknown category: unused-params

1065[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1066[error] 687 | case g: GetScope[_] => g

1067[error] | ^

1068[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1069[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1070[error] |

1071[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1072[error] | G is a type in method translate with bounds <: [_²] =>> Any

1073[error] | R is a type in class AlgEffect

1074[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1075[error] |

1076[error] | longer explanation available when compiling with `-explain`

1077[warn] 7 warnings found

1078[error] one error found

1079[error] (coreJVM / Compile / compileIncremental) Compilation failed

1080Starting build for ProjectRef(file:/build/repo/,experimental) (fs2-experimental)... [1/4]

1081Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -Wconf:msg=can be rewritten automatically under:s, -source:3.8

1082[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1083[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1084[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1085[warn] 177 | @nowarn("cat=unused-params")

1086[warn] | ^^^^^^^^^^^^^^^^^^^

1087[warn] | Invalid message filter

1088[warn] | unknown category: unused-params

1089[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1090[warn] 1060 | @nowarn("cat=unused-params")

1091[warn] | ^^^^^^^^^^^^^^^^^^^

1092[warn] | Invalid message filter

1093[warn] | unknown category: unused-params

1094[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1095[warn] 1098 | @nowarn("cat=unused-params")

1096[warn] | ^^^^^^^^^^^^^^^^^^^

1097[warn] | Invalid message filter

1098[warn] | unknown category: unused-params

1099[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1100[warn] 1117 | @nowarn("cat=unused-params")

1101[warn] | ^^^^^^^^^^^^^^^^^^^

1102[warn] | Invalid message filter

1103[warn] | unknown category: unused-params

1104[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1105[warn] 2343 | @nowarn("cat=unused-params")

1106[warn] | ^^^^^^^^^^^^^^^^^^^

1107[warn] | Invalid message filter

1108[warn] | unknown category: unused-params

1109[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1110[warn] 3450 | @nowarn("cat=unused-params")

1111[warn] | ^^^^^^^^^^^^^^^^^^^

1112[warn] | Invalid message filter

1113[warn] | unknown category: unused-params

1114[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1115[error] 687 | case g: GetScope[_] => g

1116[error] | ^

1117[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1118[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1119[error] |

1120[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1121[error] | G is a type in method translate with bounds <: [_²] =>> Any

1122[error] | R is a type in class AlgEffect

1123[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1124[error] |

1125[error] | longer explanation available when compiling with `-explain`

1126[warn] 7 warnings found

1127[error] one error found

1128[error] (coreJVM / Compile / compileIncremental) Compilation failed

1129[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1130[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1131/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

1132 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

1133 ^

1134/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

1135 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

1136 ^

1137[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1138[warn] 177 | @nowarn("cat=unused-params")

1139[warn] | ^^^^^^^^^^^^^^^^^^^

1140[warn] | Invalid message filter

1141[warn] | unknown category: unused-params

1142[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1143[warn] 1060 | @nowarn("cat=unused-params")

1144[warn] | ^^^^^^^^^^^^^^^^^^^

1145[warn] | Invalid message filter

1146[warn] | unknown category: unused-params

1147[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1148[warn] 1098 | @nowarn("cat=unused-params")

1149[warn] | ^^^^^^^^^^^^^^^^^^^

1150[warn] | Invalid message filter

1151[warn] | unknown category: unused-params

1152[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1153[warn] 1117 | @nowarn("cat=unused-params")

1154[warn] | ^^^^^^^^^^^^^^^^^^^

1155[warn] | Invalid message filter

1156[warn] | unknown category: unused-params

1157[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1158[warn] 2343 | @nowarn("cat=unused-params")

1159[warn] | ^^^^^^^^^^^^^^^^^^^

1160[warn] | Invalid message filter

1161[warn] | unknown category: unused-params

1162[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1163[warn] 3450 | @nowarn("cat=unused-params")

1164[warn] | ^^^^^^^^^^^^^^^^^^^

1165[warn] | Invalid message filter

1166[warn] | unknown category: unused-params

1167[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1168[error] 687 | case g: GetScope[_] => g

1169[error] | ^

1170[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1171[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1172[error] |

1173[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1174[error] | G is a type in method translate with bounds <: [_²] =>> Any

1175[error] | R is a type in class AlgEffect

1176[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1177[error] |

1178[error] | longer explanation available when compiling with `-explain`

1179[warn] 7 warnings found

1180[error] one error found

1181[error] (coreJVM / Compile / compileIncremental) Compilation failed

1182[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1183[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1184/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

1185 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

1186 ^

1187/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

1188 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

1189 ^

1190[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1191[warn] 177 | @nowarn("cat=unused-params")

1192[warn] | ^^^^^^^^^^^^^^^^^^^

1193[warn] | Invalid message filter

1194[warn] | unknown category: unused-params

1195[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1196[warn] 1060 | @nowarn("cat=unused-params")

1197[warn] | ^^^^^^^^^^^^^^^^^^^

1198[warn] | Invalid message filter

1199[warn] | unknown category: unused-params

1200[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1201[warn] 1098 | @nowarn("cat=unused-params")

1202[warn] | ^^^^^^^^^^^^^^^^^^^

1203[warn] | Invalid message filter

1204[warn] | unknown category: unused-params

1205[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1206[warn] 1117 | @nowarn("cat=unused-params")

1207[warn] | ^^^^^^^^^^^^^^^^^^^

1208[warn] | Invalid message filter

1209[warn] | unknown category: unused-params

1210[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1211[warn] 2343 | @nowarn("cat=unused-params")

1212[warn] | ^^^^^^^^^^^^^^^^^^^

1213[warn] | Invalid message filter

1214[warn] | unknown category: unused-params

1215[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1216[warn] 3450 | @nowarn("cat=unused-params")

1217[warn] | ^^^^^^^^^^^^^^^^^^^

1218[warn] | Invalid message filter

1219[warn] | unknown category: unused-params

1220[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1221[error] 687 | case g: GetScope[_] => g

1222[error] | ^

1223[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1224[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1225[error] |

1226[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1227[error] | G is a type in method translate with bounds <: [_²] =>> Any

1228[error] | R is a type in class AlgEffect

1229[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1230[error] |

1231[error] | longer explanation available when compiling with `-explain`

1232[warn] 7 warnings found

1233[error] one error found

1234[error] (coreJVM / Compile / compileIncremental) Compilation failed

1235Starting build for ProjectRef(file:/build/repo/,io) (fs2-io)... [2/4]

1236Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -Wconf:msg=can be rewritten automatically under:s, -source:3.8

1237[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1238[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1239[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1240[warn] 177 | @nowarn("cat=unused-params")

1241[warn] | ^^^^^^^^^^^^^^^^^^^

1242[warn] | Invalid message filter

1243[warn] | unknown category: unused-params

1244[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1245[warn] 1060 | @nowarn("cat=unused-params")

1246[warn] | ^^^^^^^^^^^^^^^^^^^

1247[warn] | Invalid message filter

1248[warn] | unknown category: unused-params

1249[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1250[warn] 1098 | @nowarn("cat=unused-params")

1251[warn] | ^^^^^^^^^^^^^^^^^^^

1252[warn] | Invalid message filter

1253[warn] | unknown category: unused-params

1254[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1255[warn] 1117 | @nowarn("cat=unused-params")

1256[warn] | ^^^^^^^^^^^^^^^^^^^

1257[warn] | Invalid message filter

1258[warn] | unknown category: unused-params

1259[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1260[warn] 2343 | @nowarn("cat=unused-params")

1261[warn] | ^^^^^^^^^^^^^^^^^^^

1262[warn] | Invalid message filter

1263[warn] | unknown category: unused-params

1264[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1265[warn] 3450 | @nowarn("cat=unused-params")

1266[warn] | ^^^^^^^^^^^^^^^^^^^

1267[warn] | Invalid message filter

1268[warn] | unknown category: unused-params

1269[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1270[error] 687 | case g: GetScope[_] => g

1271[error] | ^

1272[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1273[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1274[error] |

1275[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1276[error] | G is a type in method translate with bounds <: [_²] =>> Any

1277[error] | R is a type in class AlgEffect

1278[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1279[error] |

1280[error] | longer explanation available when compiling with `-explain`

1281[warn] 7 warnings found

1282[error] one error found

1283[error] (coreJVM / Compile / compileIncremental) Compilation failed

1284[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1285[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1286/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

1287 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

1288 ^

1289/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

1290 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

1291 ^

1292[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1293[warn] 177 | @nowarn("cat=unused-params")

1294[warn] | ^^^^^^^^^^^^^^^^^^^

1295[warn] | Invalid message filter

1296[warn] | unknown category: unused-params

1297[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1298[warn] 1060 | @nowarn("cat=unused-params")

1299[warn] | ^^^^^^^^^^^^^^^^^^^

1300[warn] | Invalid message filter

1301[warn] | unknown category: unused-params

1302[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1303[warn] 1098 | @nowarn("cat=unused-params")

1304[warn] | ^^^^^^^^^^^^^^^^^^^

1305[warn] | Invalid message filter

1306[warn] | unknown category: unused-params

1307[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1308[warn] 1117 | @nowarn("cat=unused-params")

1309[warn] | ^^^^^^^^^^^^^^^^^^^

1310[warn] | Invalid message filter

1311[warn] | unknown category: unused-params

1312[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1313[warn] 2343 | @nowarn("cat=unused-params")

1314[warn] | ^^^^^^^^^^^^^^^^^^^

1315[warn] | Invalid message filter

1316[warn] | unknown category: unused-params

1317[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1318[warn] 3450 | @nowarn("cat=unused-params")

1319[warn] | ^^^^^^^^^^^^^^^^^^^

1320[warn] | Invalid message filter

1321[warn] | unknown category: unused-params

1322[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1323[error] 687 | case g: GetScope[_] => g

1324[error] | ^

1325[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1326[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1327[error] |

1328[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1329[error] | G is a type in method translate with bounds <: [_²] =>> Any

1330[error] | R is a type in class AlgEffect

1331[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1332[error] |

1333[error] | longer explanation available when compiling with `-explain`

1334[warn] 7 warnings found

1335[error] one error found

1336[error] (coreJVM / Compile / compileIncremental) Compilation failed

1337[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1338[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1339/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

1340 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

1341 ^

1342/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

1343 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

1344 ^

1345[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1346[warn] 177 | @nowarn("cat=unused-params")

1347[warn] | ^^^^^^^^^^^^^^^^^^^

1348[warn] | Invalid message filter

1349[warn] | unknown category: unused-params

1350[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1351[warn] 1060 | @nowarn("cat=unused-params")

1352[warn] | ^^^^^^^^^^^^^^^^^^^

1353[warn] | Invalid message filter

1354[warn] | unknown category: unused-params

1355[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1356[warn] 1098 | @nowarn("cat=unused-params")

1357[warn] | ^^^^^^^^^^^^^^^^^^^

1358[warn] | Invalid message filter

1359[warn] | unknown category: unused-params

1360[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1361[warn] 1117 | @nowarn("cat=unused-params")

1362[warn] | ^^^^^^^^^^^^^^^^^^^

1363[warn] | Invalid message filter

1364[warn] | unknown category: unused-params

1365[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1366[warn] 2343 | @nowarn("cat=unused-params")

1367[warn] | ^^^^^^^^^^^^^^^^^^^

1368[warn] | Invalid message filter

1369[warn] | unknown category: unused-params

1370[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1371[warn] 3450 | @nowarn("cat=unused-params")

1372[warn] | ^^^^^^^^^^^^^^^^^^^

1373[warn] | Invalid message filter

1374[warn] | unknown category: unused-params

1375[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1376[error] 687 | case g: GetScope[_] => g

1377[error] | ^

1378[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1379[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1380[error] |

1381[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1382[error] | G is a type in method translate with bounds <: [_²] =>> Any

1383[error] | R is a type in class AlgEffect

1384[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1385[error] |

1386[error] | longer explanation available when compiling with `-explain`

1387[warn] 7 warnings found

1388[error] one error found

1389[error] (coreJVM / Compile / compileIncremental) Compilation failed

1390Starting build for ProjectRef(file:/build/repo/,reactiveStreams) (fs2-reactive-streams)... [3/4]

1391Compile scalacOptions: -language:implicitConversions, -Ykind-projector, -Wconf:msg=can be rewritten automatically under:s, -source:3.8

1392[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1393[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1394[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1395[warn] 177 | @nowarn("cat=unused-params")

1396[warn] | ^^^^^^^^^^^^^^^^^^^

1397[warn] | Invalid message filter

1398[warn] | unknown category: unused-params

1399[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1400[warn] 1060 | @nowarn("cat=unused-params")

1401[warn] | ^^^^^^^^^^^^^^^^^^^

1402[warn] | Invalid message filter

1403[warn] | unknown category: unused-params

1404[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1405[warn] 1098 | @nowarn("cat=unused-params")

1406[warn] | ^^^^^^^^^^^^^^^^^^^

1407[warn] | Invalid message filter

1408[warn] | unknown category: unused-params

1409[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1410[warn] 1117 | @nowarn("cat=unused-params")

1411[warn] | ^^^^^^^^^^^^^^^^^^^

1412[warn] | Invalid message filter

1413[warn] | unknown category: unused-params

1414[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1415[warn] 2343 | @nowarn("cat=unused-params")

1416[warn] | ^^^^^^^^^^^^^^^^^^^

1417[warn] | Invalid message filter

1418[warn] | unknown category: unused-params

1419[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1420[warn] 3450 | @nowarn("cat=unused-params")

1421[warn] | ^^^^^^^^^^^^^^^^^^^

1422[warn] | Invalid message filter

1423[warn] | unknown category: unused-params

1424[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1425[error] 687 | case g: GetScope[_] => g

1426[error] | ^

1427[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1428[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1429[error] |

1430[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1431[error] | G is a type in method translate with bounds <: [_²] =>> Any

1432[error] | R is a type in class AlgEffect

1433[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1434[error] |

1435[error] | longer explanation available when compiling with `-explain`

1436[warn] 7 warnings found

1437[error] one error found

1438[error] (coreJVM / Compile / compileIncremental) Compilation failed

1439/build/repo/reactive-streams/src/main/scala/fs2/interop/reactivestreams/StreamUnicastPublisher.scala:39: error: ] expected but >: found

1440 def subscribe(subscriber: Subscriber[? >: A]): Unit = {

1441 ^

1442[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1443[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1444/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

1445 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

1446 ^

1447/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

1448 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

1449 ^

1450[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1451[warn] 177 | @nowarn("cat=unused-params")

1452[warn] | ^^^^^^^^^^^^^^^^^^^

1453[warn] | Invalid message filter

1454[warn] | unknown category: unused-params

1455[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1456[warn] 1060 | @nowarn("cat=unused-params")

1457[warn] | ^^^^^^^^^^^^^^^^^^^

1458[warn] | Invalid message filter

1459[warn] | unknown category: unused-params

1460[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1461[warn] 1098 | @nowarn("cat=unused-params")

1462[warn] | ^^^^^^^^^^^^^^^^^^^

1463[warn] | Invalid message filter

1464[warn] | unknown category: unused-params

1465[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1466[warn] 1117 | @nowarn("cat=unused-params")

1467[warn] | ^^^^^^^^^^^^^^^^^^^

1468[warn] | Invalid message filter

1469[warn] | unknown category: unused-params

1470[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1471[warn] 2343 | @nowarn("cat=unused-params")

1472[warn] | ^^^^^^^^^^^^^^^^^^^

1473[warn] | Invalid message filter

1474[warn] | unknown category: unused-params

1475[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1476[warn] 3450 | @nowarn("cat=unused-params")

1477[warn] | ^^^^^^^^^^^^^^^^^^^

1478[warn] | Invalid message filter

1479[warn] | unknown category: unused-params

1480[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1481[error] 687 | case g: GetScope[_] => g

1482[error] | ^

1483[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1484[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1485[error] |

1486[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1487[error] | G is a type in method translate with bounds <: [_²] =>> Any

1488[error] | R is a type in class AlgEffect

1489[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1490[error] |

1491[error] | longer explanation available when compiling with `-explain`

1492[warn] 7 warnings found

1493[error] one error found

1494[error] (coreJVM / Compile / compileIncremental) Compilation failed

1495/build/repo/reactive-streams/src/main/scala/fs2/interop/reactivestreams/StreamUnicastPublisher.scala:39: error: ] expected but >: found

1496 def subscribe(subscriber: Subscriber[? >: A]): Unit = {

1497 ^

1498[info] compiling 35 Scala sources to /build/repo/core/jvm/target/scala-3.8.0-RC1-bin-20251107-3bea2f3-NIGHTLY/classes ...

1499[warn] Option -Ykind-projector is deprecated: Use -Xkind-projector instead.

1500/build/repo/core/shared/src/main/scala/fs2/Stream.scala:2741: error: ) expected but . found

1501 FreeC.translate[F2, G, O](free, u)(using TranslateInterrupt.interruptibleInstance[G])

1502 ^

1503/build/repo/core/shared/src/main/scala-3/fs2/ChunkPlatform.scala:40: error: ) expected but . found

1504 .toArraySeq(using knownType.elementClassTag.asInstanceOf[reflect.ClassTag[O]])

1505 ^

1506[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Pull.scala:177:10 -------

1507[warn] 177 | @nowarn("cat=unused-params")

1508[warn] | ^^^^^^^^^^^^^^^^^^^

1509[warn] | Invalid message filter

1510[warn] | unknown category: unused-params

1511[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1060:10 ----

1512[warn] 1060 | @nowarn("cat=unused-params")

1513[warn] | ^^^^^^^^^^^^^^^^^^^

1514[warn] | Invalid message filter

1515[warn] | unknown category: unused-params

1516[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1098:10 ----

1517[warn] 1098 | @nowarn("cat=unused-params")

1518[warn] | ^^^^^^^^^^^^^^^^^^^

1519[warn] | Invalid message filter

1520[warn] | unknown category: unused-params

1521[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:1117:10 ----

1522[warn] 1117 | @nowarn("cat=unused-params")

1523[warn] | ^^^^^^^^^^^^^^^^^^^

1524[warn] | Invalid message filter

1525[warn] | unknown category: unused-params

1526[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:2343:10 ----

1527[warn] 2343 | @nowarn("cat=unused-params")

1528[warn] | ^^^^^^^^^^^^^^^^^^^

1529[warn] | Invalid message filter

1530[warn] | unknown category: unused-params

1531[warn] -- Warning: /build/repo/core/shared/src/main/scala/fs2/Stream.scala:3450:10 ----

1532[warn] 3450 | @nowarn("cat=unused-params")

1533[warn] | ^^^^^^^^^^^^^^^^^^^

1534[warn] | Invalid message filter

1535[warn] | unknown category: unused-params

1536[error] -- [E007] Type Mismatch Error: /build/repo/core/shared/src/main/scala/fs2/internal/Algebra.scala:687:36

1537[error] 687 | case g: GetScope[_] => g

1538[error] | ^

1539[error] |Found: (g : fs2.internal.FreeC.GetScope[?[_$19]] & fs2.internal.FreeC.AlgEffect[F, R²])

1540[error] |Required: fs2.internal.FreeC.AlgEffect[G, R²]

1541[error] |

1542[error] |where: F is a type in method translate with bounds >: fs2.Pure and <: [_] =>> Any

1543[error] | G is a type in method translate with bounds <: [_²] =>> Any

1544[error] | R is a type in class AlgEffect

1545[error] | R² is a type in method translateAlgEffect with bounds <: fs2.internal.CompileScope[?[_$19]]

1546[error] |

1547[error] | longer explanation available when compiling with `-explain`

1548[warn] 7 warnings found

1549[error] one error found

1550[error] (coreJVM / Compile / compileIncremental) Compilation failed

1551

1552************************

1553Build summary:

1554[{

1555 "module": "fs2-core",

1556 "compile": {"status": "failed", "failureContext": {"type": "buildError", "reasons": ["Compilation failed"]}, "tookMs": 18408, "warnings": 7, "errors": 1, "sourceVersion": "3.8"},

1557 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

1558 "test-compile": {"status": "skipped", "tookMs": 0, "warnings": 0, "errors": 0},

1559 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

1560 "publish": {"status": "skipped", "tookMs": 0},

1561 "metadata": {

1562 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

1563}

1564},{

1565 "module": "fs2-experimental",

1566 "compile": {"status": "failed", "failureContext": {"type": "buildError", "reasons": ["Compilation failed"]}, "tookMs": 5398, "warnings": 7, "errors": 1, "sourceVersion": "3.8"},

1567 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

1568 "test-compile": {"status": "skipped", "tookMs": 0, "warnings": 0, "errors": 0},

1569 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

1570 "publish": {"status": "skipped", "tookMs": 0},

1571 "metadata": {

1572 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

1573}

1574},{

1575 "module": "fs2-io",

1576 "compile": {"status": "failed", "failureContext": {"type": "buildError", "reasons": ["Compilation failed"]}, "tookMs": 4422, "warnings": 7, "errors": 1, "sourceVersion": "3.8"},

1577 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

1578 "test-compile": {"status": "skipped", "tookMs": 0, "warnings": 0, "errors": 0},

1579 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

1580 "publish": {"status": "skipped", "tookMs": 0},

1581 "metadata": {

1582 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

1583}

1584},{

1585 "module": "fs2-reactive-streams",

1586 "compile": {"status": "failed", "failureContext": {"type": "buildError", "reasons": ["Compilation failed"]}, "tookMs": 4183, "warnings": 7, "errors": 1, "sourceVersion": "3.8"},

1587 "doc": {"status": "skipped", "tookMs": 0, "files": 0, "totalSizeKb": 0},

1588 "test-compile": {"status": "skipped", "tookMs": 0, "warnings": 0, "errors": 0},

1589 "test": {"status": "skipped", "tookMs": 0, "passed": 0, "failed": 0, "ignored": 0, "skipped": 0, "total": 0, "byFramework": []},

1590 "publish": {"status": "skipped", "tookMs": 0},

1591 "metadata": {

1592 "crossScalaVersions": ["3.0.2", "2.12.20", "2.13.16"]

1593}

1594}]

1595************************

1596[error] Scala3CommunityBuild$ProjectBuildFailureException: 4 module(s) finished with failures: fs2-core, fs2-experimental, fs2-io, fs2-reactive-streams

1597[error] (Global / runBuild) Scala3CommunityBuild$ProjectBuildFailureException: 4 module(s) finished with failures: fs2-core, fs2-experimental, fs2-io, fs2-reactive-streams

1598[error] Total time: 85 s (0:01:25.0), completed Nov 8, 2025, 12:55:30 AM

1599[0JBuild failed, not retrying.

Build Logs