Build Logs

lampepfl/gears • 3.8.0:2026-01-13

Errors

Warnings

Total Lines

306

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

2Clonning https://github.com/lampepfl/gears.git into /build/repo using revision v0.2.0

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

4Note: switching to 'a4a6b721442ce1ad964376b759766d7846947daf'.

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.

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:

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

15Or undo this operation with:

17 git switch -

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

21----

22Preparing build for 3.8.0

23Scala binary version found: 3.8

24Implicitly using source version 3.8

25Scala binary version found: 3.8

26Implicitly using source version 3.8

27Would try to apply common scalacOption (best-effort, sbt/mill only):

28Append: ,REQUIRE:-source:3.8

29Remove: ,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

30----

31Starting build for 3.8.0

32Execute tests: true

33sbt project found:

34Sbt version 1.10.0 is not supported, minimal supported version is 1.11.5

35Enforcing usage of sbt in version 1.11.5

36No prepare script found for project lampepfl/gears

37##################################

38Scala version: 3.8.0

39Targets: ch.epfl.lamp%gears

40Project projectConfig: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"21"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"full","migrationVersions":[],"sourcePatches":[]}

41##################################

42Using extra scalacOptions: ,REQUIRE:-source:3.8

43Filtering out scalacOptions: ,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

44[sbt_options] declare -a sbt_options=()

45[process_args] java_version = '21'

46[copyRt] java9_rt = '/root/.sbt/1.0/java9-rt-ext-eclipse_adoptium_21/rt.jar'

47# Executing command line:

48java

49-Dfile.encoding=UTF-8

50-Dcommunitybuild.scala=3.8.0

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_21

57-jar

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

59"setCrossScalaVersions 3.8.0"

60"++3.8.0 -v"

61"mapScalacOptions ",REQUIRE:-source:3.8,-Wconf:msg=can be rewritten automatically under:s" ",-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"

66moduleMappings

67"runBuild 3.8.0 """{"projects":{"exclude":[],"overrides":{}},"java":{"version":"21"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"full","migrationVersions":[],"sourcePatches":[]}""" ch.epfl.lamp%gears"

69[info] welcome to sbt 1.11.5 (Eclipse Adoptium Java 21)

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

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

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

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

74[info] Compilation completed in 8.2s.

75[info] done compiling

76[info] loading settings for project repo from build.sbt...

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

78Execute setCrossScalaVersions: 3.8.0

79OpenCB::Changing crossVersion 3.3.3 -> 3.8.0 in rootNative/crossScalaVersions

80OpenCB::Changing crossVersion 3.3.3 -> 3.8.0 in repo/crossScalaVersions

81OpenCB::Changing crossVersion 3.3.3 -> 3.8.0 in rootJVM/crossScalaVersions

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

83[info] Setting Scala version to 3.8.0 on 3 projects.

84[info] Switching Scala version on:

85[info] * repo (3.8.0)

86[info] rootJVM (3.8.0)

87[info] rootNative (3.8.0)

88[info] Excluding projects:

89[info] Reapplying settings...

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

91Execute mapScalacOptions: ,REQUIRE:-source:3.8,-Wconf:msg=can be rewritten automatically under:s ,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

92[info] Reapplying settings...

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

94[info] Defining Global / credentials, credentials and 1 others.

95[info] The new values will be used by Global / pgpSelectPassphrase, Global / pgpSigningKey and 14 others.

96[info] Run `last` for details.

97[info] Reapplying settings...

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

99Execute excludeLibraryDependency: com.github.ghik:zerowaste_{scalaVersion} com.olegpy:better-monadic-for_3 org.polyvariant:better-tostring_{scalaVersion} org.wartremover:wartremover_{scalaVersion}

100[info] Reapplying settings...

101OpenCB::Failed to reapply settings in excludeLibraryDependency: Reference to undefined setting:

102

103 Global / allExcludeDependencies from Global / allExcludeDependencies (CommunityBuildPlugin.scala:331)

104 Did you mean rootJVM / allExcludeDependencies ?

105 , retry without global scopes

106[info] Reapplying settings...

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

108Execute removeScalacOptionsStartingWith: -P:wartremover

109[info] Reapplying settings...

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

111[success] Total time: 0 s, completed Jan 13, 2026, 5:16:24 PM

112Build config: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"21"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"full","migrationVersions":[],"sourcePatches":[]}

113Parsed config: Success(ProjectBuildConfig(ProjectsConfig(List(),Map()),Full,List()))

114Starting build...

115Projects: Set(rootJVM)

116Starting build for ProjectRef(file:/build/repo/,rootJVM) (gears)... [0/1]

117OpenCB::Exclude Scala3 specific scalacOption `REQUIRE:-source:3.8` in Scala 2.12.20 module Global

118Compile scalacOptions: -Wconf:msg=can be rewritten automatically under:s, -source:3.8

119[info] compiling 21 Scala sources to /build/repo/jvm/target/scala-3.8.0/classes ...

120[warn] -- [E197] Potential Issue Warning: /build/repo/shared/src/main/scala/async/Listener.scala:53:8

121[warn] 53 | new Listener[T]:

122[warn] | ^

123[warn] | New anonymous class definition will be duplicated at each inline site

124[warn] |

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

126[warn] there were 17 deprecation warnings; re-run with -deprecation for details

127[warn] two warnings found

128[info] done compiling

129[info] compiling 11 Scala sources to /build/repo/jvm/target/scala-3.8.0/test-classes ...

130[warn] -- [E029] Pattern Match Exhaustivity Warning: /build/repo/shared/src/test/scala/ChannelBehavior.scala:309:32

131[warn] 309 | a.readSource handle { case Right(v) =>

132[warn] | ^

133[warn] | match may not be exhaustive.

134[warn] |

135[warn] | It would fail on pattern case: Left(_)

136[warn] |

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

138[warn] -- [E029] Pattern Match Exhaustivity Warning: /build/repo/shared/src/test/scala/ChannelBehavior.scala:312:36

139[warn] 312 | b.sendSource(10) handle { case Right(_) =>

140[warn] | ^

141[warn] | match may not be exhaustive.

142[warn] |

143[warn] | It would fail on pattern case: Left(_)

144[warn] |

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

146[warn] -- [E029] Pattern Match Exhaustivity Warning: /build/repo/shared/src/test/scala/SourceBehavior.scala:134:43

147[warn] 134 | assertEquals(f.transformValuesWith({ case Success(i) => i + 1 }).awaitResult, 11)

148[warn] | ^

149[warn] | match may not be exhaustive.

150[warn] |

151[warn] | It would fail on pattern case: scala.util.Failure(_)

152[warn] |

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

154[warn] -- [E029] Pattern Match Exhaustivity Warning: /build/repo/shared/src/test/scala/SourceBehavior.scala:136:43

155[warn] 136 | assertEquals(g.transformValuesWith({ case Failure(_) => 17 }).awaitResult, 17)

156[warn] | ^

157[warn] | match may not be exhaustive.

158[warn] |

159[warn] | It would fail on pattern case: scala.util.Success(_)

160[warn] |

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

162[warn] -- [E092] Pattern Match Unchecked Warning: /build/repo/shared/src/test/scala/FutureBehavior.scala:184:13

163[warn] 184 | case _: Failure[CancellationException] => ()

164[warn] | ^

165[warn] |the type test for scala.util.Failure[java.util².concurrent.CancellationException] cannot be checked at runtime because its type arguments can't be determined from scala.util.Try[Int]

166[warn] |

167[warn] |where: util is a package in package scala

168[warn] | util² is a package in package java

169[warn] |

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

171[warn] there were 33 deprecation warnings; re-run with -deprecation for details

172[warn] 6 warnings found

173[info] done compiling

174[warn] javaOptions will be ignored, fork is set to false

175RetryBehavior:

176 + Exponential backoff(2) 50ms, 5 times total schedule 0.79s

177 + UntilSuccess 150ms 0.602s

178 + UntilFailure 150ms 0.603s

179 + delay policies 0.006s

180TimerBehavior:

181 + sleeping does sleep 0.202s

182 + timer does sleep 1.004s

183 + racing with a sleeping future 2.254s

184SourceBehavior:

185 + onComplete register after completion runs immediately 0.001s

186 + poll is asynchronous 0.001s

187 + onComplete is asynchronous 0.003s

188 + await is synchronous 0.351s

189 + sources wait on children sources when they block 0.142s

190 + sources do not wait on zombie sources (which are killed at the end of Async.Blocking) 0.002s

191 + poll() 0.101s

192 + onComplete() fires 0.201s

193 + dropped onComplete() listener does not fire 0.202s

194 + transform values with 0.001s

195 + all listeners in chain fire 0.152s

196 + either 0.402s

197 + source values 0.204s

198 + transformValuesWith unsubscribes 0.002s

1991

200FutureBehavior:

201 + Old test 0.065s

202 + Constant returns 0.005s

203 + Future.now returning 0.0s

204 + Constant future with timeout 0.053s

205 + or 0.009s

206 + orWithCancel of 2 futures 0.605s

207 + zip 0.003s

208 + result wraps exceptions 0.003s

209 + result wraps values 0.003s

210 + value propagates exceptions exceptions through futures 0.001s

211 + futures can be nested 0.03s

212 + future are cancelled via .interrupt() and not checking the flag in async 0.001s

213 + future should cancel its group when the main body is completed 1.502s

214 + zombie threads exist and run to completion after the Async.blocking barrier 0.302s

215==> i FutureBehavior.cancelled futures return the same constant CancellationException with no stack attached ignored 0.0s

216 + noninterruptible future immediate return 0.002s

217 + Noninterruptible future cannot be interrupted immediately but throws later 0.301s

218 + Promise can be cancelled 0.001s

219 + Promise can't be cancelled after completion 0.0s

220 + Future.withResolver cancel handler is run once 0.002s

221 + Future.withResolver cancel handler is not run after being completed 0.001s

222 + Future.withResolver is only completed after handler decides 0.001s

223 + Nesting of cancellations 0.402s

224 + future collector 1.001s

225 + mutable collector 2.002s

226 + future collection: awaitAll* 1.003s

227 + future collection: awaitFirst* 1.005s

228 + uninterruptible should continue even when Future is cancelled 0.003s

229CancellationBehavior:

230 + no cancel 0.402s

231 + group cancel 0.001s

232 + link group 0.002s

233 + nested link group 0.002s

234 + link to already cancelled 0.502s

235 + link to already cancelled awaited 0.001s

236true false

237ListenerBehavior:

238 + race two futures 0.002s

239 + lock two listeners 0.002s

240 + lock two listeners where one fails 0.007s

241 + lock two races 0.002s

242 + lock two races in reverse order 0.002s

243 + lock two nested races 0.001s

244 + lock two nested races in reverse order 0.001s

245 + race successful without wait 0.002s

246 + race successful with wait 0.002s

247 + race polling 0.002s

248 + race failed without wait 0.001s

249 + lockBoth of race with competing lock 0.001s

250 + conflicting locks 0.002s

251 + failing downstream listener is dropped in race 0.002s

252 + succeeding downstream listener is dropped in race 0.002s

253TaskScheduleBehavior:

254 + Every 100ms, 3 times total schedule 0.204s

255 + Exponential backoff(2) 50ms, 5 times total schedule 0.754s

256 + Fibonacci backoff 10ms, 6 times total schedule 0.127s

257 + UntilSuccess 150ms 0.603s

258 + UntilFailure 150ms 0.603s

259ChannelBehavior:

260 + sending is blocking in SyncChannel 0.54s

261 + sending is nonblocking in empty BufferedChannel 0.503s

262 + sending is blocking in full BufferedChannel 0.502s

263 + read blocks until value is available in SyncChannel 1.001s

264 + read blocks until value is available in BufferedChannel 1.002s

265 + values arrive in order 0.076s

266 + reading a closed channel returns Failure(ChannelClosedException) 0.004s

267 + writing to a closed channel throws ChannelClosedException 0.001s

268 + send a lot of values via a channel and check their sum 0.135s

269 + multiple writers, multiple readers 6.004s

270 + race reads 0.056s

271 + unbounded channels with sync sending 0.001s

272 + race sends 0.114s

273 + race syntax 0.002s

274 + ChannelMultiplexer multiplexes - all subscribers read the same stream 0.005s

275 + ChannelMultiplexer multiple readers and writers 1.011s

276SchedulerBehavior:

277 + schedule cancellation works 1.004s

278 + schedule cancellation doesn't abort inner code 1.052s

279 + execute works 0.001s

280JVMCancellationBehavior:

281 + no cancel -> timeout 5.001s

282StressTest:

283 + survives a stress test that hammers on creating futures 11.056s

284 + survives a stress test that hammers on suspending 20.087s

285

286************************

287Build summary:

288[{

289 "module": "gears",

290 "compile": {"status": "ok", "tookMs": 9687, "warnings": 1, "errors": 0, "sourceVersion": "3.8"},

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

292 "test-compile": {"status": "ok", "tookMs": 4704, "warnings": 5, "errors": 0, "sourceVersion": "3.8"},

293 "test": {"status": "ok", "tookMs": 31499, "passed": 96, "failed": 0, "ignored": 1, "skipped": 0, "total": 97, "byFramework": [{"framework": "munit", "stats": {"passed": 96, "failed": 0, "ignored": 1, "skipped": 0, "total": 97}}]},

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

295 "metadata": {

296 "crossScalaVersions": ["3.3.3"]

297}

298}]

299************************

300[success] Total time: 47 s, completed Jan 13, 2026, 5:17:12 PM

301[0JChecking patch project/plugins.sbt...

302Checking patch project/build.properties...

303Checking patch build.sbt...

304Applied patch project/plugins.sbt cleanly.

305Applied patch project/build.properties cleanly.

306Applied patch build.sbt cleanly.