Build Logs

http4s/http4s-servlet • 3.8.0-RC6:2026-01-08

Errors

Warnings

Total Lines

340

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

2Clonning https://github.com/http4s/http4s-servlet.git into /build/repo using revision v0.24.0-RC3

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

4Note: switching to '521b4a895f036a8529ee260a4beacabe761453b4'.

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-RC6

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-RC6

32Execute tests: true

33sbt project found:

34Sbt version 1.11.3 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 http4s/http4s-servlet

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

38Scala version: 3.8.0-RC6

39Targets: org.http4s%http4s-servlet

40Project projectConfig: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"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 = '17'

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

47# Executing command line:

48java

49-Dfile.encoding=UTF-8

50-Dcommunitybuild.scala=3.8.0-RC6

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 3.8.0-RC6"

60"++3.8.0-RC6 -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-RC6 """{"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"full","migrationVersions":[],"sourcePatches":[]}""" org.http4s%http4s-servlet"

69[info] welcome to sbt 1.11.5 (Eclipse Adoptium Java 17.0.8)

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 8.326s.

75[info] done compiling

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

77[info] resolving key references (11038 settings) ...

78[info] set scmInfo to https://github.com/http4s/http4s-servlet

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

80[warn] there are 2 keys that are not used by any other settings/tasks:

81[warn]

82[warn] * examples / githubWorkflowJavaVersions

83[warn] +- /build/repo/build.sbt:82

84[warn] * servletTesting / githubWorkflowJavaVersions

85[warn] +- /build/repo/build.sbt:62

86[warn]

87[warn] note: a setting might still be used by a command; to exclude a key from this `lintUnused` check

88[warn] either append it to `Global / excludeLintKeys` or call .withRank(KeyRanks.Invisible) on the key

89Execute setCrossScalaVersions: 3.8.0-RC6

90OpenCB::Changing crossVersion 3.3.6 -> 3.8.0-RC6 in rootJVM/crossScalaVersions

91OpenCB::Changing crossVersion 3.3.6 -> 3.8.0-RC6 in sbt-http4s-org-scalafix-internal/crossScalaVersions

92OpenCB::Changing crossVersion 3.3.6 -> 3.8.0-RC6 in docs/crossScalaVersions

93OpenCB::Changing crossVersion 3.3.6 -> 3.8.0-RC6 in servlet/crossScalaVersions

94[info] set scmInfo to https://github.com/http4s/http4s-servlet

95OpenCB::Changing crossVersion 3.3.6 -> 3.8.0-RC6 in rootNative/crossScalaVersions

96OpenCB::Changing crossVersion 3.3.6 -> 3.8.0-RC6 in servletTesting/crossScalaVersions

97OpenCB::Changing crossVersion 3.3.6 -> 3.8.0-RC6 in rootJS/crossScalaVersions

98OpenCB::Limitting incorrect crossVersions List() -> List(2.13.16) in root/crossScalaVersions

99OpenCB::Changing crossVersion 3.3.6 -> 3.8.0-RC6 in examples/crossScalaVersions

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

101[info] Setting Scala version to 3.8.0-RC6 on 8 projects.

102[info] Switching Scala version on:

103[info] examples (2.12.20, 2.13.16, 3.8.0-RC6)

104[info] servletTesting (2.12.20, 2.13.16, 3.8.0-RC6)

105[info] rootJS (2.12.20, 2.13.16, 3.8.0-RC6)

106[info] docs (2.12.20, 2.13.16, 3.8.0-RC6)

107[info] servlet (2.12.20, 2.13.16, 3.8.0-RC6)

108[info] rootJVM (2.12.20, 2.13.16, 3.8.0-RC6)

109[info] rootNative (2.12.20, 2.13.16, 3.8.0-RC6)

110[info] sbt-http4s-org-scalafix-internal (2.12.20, 2.13.16, 3.8.0-RC6)

111[info] Excluding projects:

112[info] * root (2.13.16)

113[info] Reapplying settings...

114[info] set scmInfo to https://github.com/http4s/http4s-servlet

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

116Execute mapScalacOptions: ,REQUIRE:-source:3.8,-Wconf:msg=can be rewritten automatically under:s ,-deprecation,-feature,-Xfatal-warnings,-Werror,MATCH:.*-Wconf.*any:e

117[info] Reapplying settings...

118[info] set scmInfo to https://github.com/http4s/http4s-servlet

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

120[info] Defining Global / credentials, credentials and 7 others.

121[info] The new values will be used by Compile / scalafmtOnly, IntegrationTest / scalafmtOnly and 79 others.

122[info] Run `last` for details.

123[info] Reapplying settings...

124[info] set scmInfo to https://github.com/http4s/http4s-servlet

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

126Execute excludeLibraryDependency: com.github.ghik:zerowaste_{scalaVersion} com.olegpy:better-monadic-for_3 org.polyvariant:better-tostring_{scalaVersion} org.wartremover:wartremover_{scalaVersion}

127[info] Reapplying settings...

128OpenCB::Failed to reapply settings in excludeLibraryDependency: Reference to undefined setting:

129

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

131 Did you mean allExcludeDependencies ?

132 , retry without global scopes

133[info] Reapplying settings...

134[info] set scmInfo to https://github.com/http4s/http4s-servlet

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

136Execute removeScalacOptionsStartingWith: -P:wartremover

137[info] Reapplying settings...

138[info] set scmInfo to https://github.com/http4s/http4s-servlet

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

140[success] Total time: 0 s, completed Jan 8, 2026, 2:06:22 AM

141Build config: {"projects":{"exclude":[],"overrides":{}},"java":{"version":"17"},"sbt":{"commands":[],"options":[]},"mill":{"options":[]},"tests":"full","migrationVersions":[],"sourcePatches":[]}

142Parsed config: Success(ProjectBuildConfig(ProjectsConfig(List(),Map()),Full,List()))

143Starting build...

144Projects: Set(servlet)

145Starting build for ProjectRef(file:/build/repo/,servlet) (http4s-servlet)... [0/1]

146OpenCB::Exclude Scala3 specific scalacOption `REQUIRE:-source:3.8` in Scala 2.12.20 module Global

147OpenCB::Filter out '-deprecation', matches setting pattern '^-?-deprecation'

148OpenCB::Filter out '-feature', matches setting pattern '^-?-feature'

149Compile scalacOptions: -encoding, UTF-8, -unchecked, -Wunused:implicits, -Wunused:explicits, -Wunused:imports, -Wunused:locals, -Wunused:params, -Wunused:privates, -Wvalue-discard, -language:implicitConversions, -Xkind-projector, --java-output-version:17, -Xsemanticdb, -semanticdb-target, /build/repo/servlet/target/scala-3.8.0-RC6/meta, -Wconf:msg=can be rewritten automatically under:s, -source:3.8

150[info] compiling 10 Scala sources to /build/repo/servlet/target/scala-3.8.0-RC6/classes ...

151[info] done compiling

152[info] compiling 6 Scala sources to /build/repo/servlet/target/scala-3.8.0-RC6/test-classes ...

153[info] done compiling

154SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".

155SLF4J: Defaulting to no-operation (NOP) logger implementation

156SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

157Jan 08, 2026 2:06:41 AM io.undertow.Undertow start

158INFO: starting server: Undertow - 2.2.37.Final

159Jan 08, 2026 2:06:41 AM org.xnio.Xnio <clinit>

160INFO: XNIO version 3.8.16.Final

161Jan 08, 2026 2:06:41 AM org.xnio.nio.NioXnio <clinit>

162INFO: XNIO NIO Implementation Version 3.8.16.Final

163Jan 08, 2026 2:06:41 AM org.jboss.threads.Version <clinit>

164INFO: JBoss Threads version 3.1.0.Final

165Jan 08, 2026 2:06:42 AM io.undertow.Undertow stop

166INFO: stopping server: Undertow - 2.2.37.Final

167Jan 08, 2026 2:06:42 AM io.undertow.Undertow start

168INFO: starting server: Undertow - 2.2.37.Final

169Jan 08, 2026 2:06:42 AM io.undertow.Undertow stop

170INFO: stopping server: Undertow - 2.2.37.Final

171Jan 08, 2026 2:06:42 AM io.undertow.Undertow start

172INFO: starting server: Undertow - 2.2.37.Final

173java.lang.IllegalStateException: UT000091: Buffer has already been freed

174 at io.undertow.server.DefaultByteBufferPool$DefaultPooledBuffer.getBuffer(DefaultByteBufferPool.java:266)

175 at io.undertow.server.AbstractServerConnection.getExtraBytes(AbstractServerConnection.java:196)

176 at io.undertow.server.protocol.http.HttpResponseConduit.bufferDone(HttpResponseConduit.java:311)

177 at io.undertow.server.protocol.http.HttpResponseConduit.processWrite(HttpResponseConduit.java:300)

178 at io.undertow.server.protocol.http.HttpResponseConduit.flush(HttpResponseConduit.java:773)

179 at io.undertow.conduits.ChunkedStreamSinkConduit.flush(ChunkedStreamSinkConduit.java:294)

180 at org.xnio.conduits.ConduitStreamSinkChannel.flush(ConduitStreamSinkChannel.java:162)

181 at io.undertow.channels.DetachableStreamSinkChannel.flush(DetachableStreamSinkChannel.java:119)

182 at io.undertow.servlet.spec.ServletOutputStreamImpl.flushInternal(ServletOutputStreamImpl.java:535)

183 at io.undertow.servlet.spec.ServletOutputStreamImpl.flush(ServletOutputStreamImpl.java:500)

184 at org.http4s.servlet.NonBlockingServletIo$$anon$3.flush$4$$anonfun$2$$anonfun$1(ServletIo.scala:184)

185 at org.http4s.servlet.NonBlockingServletIo$$anon$3.$anonfun$adapted$2(ServletIo.scala:184)

186 at delay @ org.http4s.servlet.NonBlockingServletIo$$anon$3.flush$4$$anonfun$2(ServletIo.scala:184)

187 at >>$extension @ org.http4s.servlet.NonBlockingServletIo$$anon$3.flush$4$$anonfun$2(ServletIo.scala:184)

188 at delay @ org.http4s.servlet.NonBlockingServletIo$$anon$3.flush$4(ServletIo.scala:183)

189 at flatMap @ org.http4s.servlet.NonBlockingServletIo$$anon$3.flush$4(ServletIo.scala:183)

190 at flatMap @ org.http4s.servlet.NonBlockingServletIo$$anon$3.go$2(ServletIo.scala:191)

191 at onError$extension @ org.http4s.servlet.NonBlockingServletIo$$anon$3.unsafeRunAndForget(ServletIo.scala:211)

192 at unsafeRunAndForget @ org.http4s.servlet.NonBlockingServletIo$$anon$3.unsafeRunAndForget(ServletIo.scala:211)

193Jan 08, 2026 2:06:42 AM io.undertow.Undertow stop

194INFO: stopping server: Undertow - 2.2.37.Final

195Jan 08, 2026 2:06:42 AM io.undertow.Undertow start

196INFO: starting server: Undertow - 2.2.37.Final

197Jan 08, 2026 2:06:42 AM io.undertow.Undertow stop

198INFO: stopping server: Undertow - 2.2.37.Final

199Jan 08, 2026 2:06:42 AM io.undertow.Undertow start

200INFO: starting server: Undertow - 2.2.37.Final

201Jan 08, 2026 2:06:42 AM io.undertow.Undertow stop

202INFO: stopping server: Undertow - 2.2.37.Final

203Jan 08, 2026 2:06:42 AM io.undertow.Undertow start

204INFO: starting server: Undertow - 2.2.37.Final

205Jan 08, 2026 2:06:42 AM io.undertow.Undertow stop

206INFO: stopping server: Undertow - 2.2.37.Final

207Jan 08, 2026 2:06:42 AM io.undertow.Undertow start

208INFO: starting server: Undertow - 2.2.37.Final

209Jan 08, 2026 2:06:43 AM io.undertow.Undertow stop

210INFO: stopping server: Undertow - 2.2.37.Final

211Jan 08, 2026 2:06:43 AM io.undertow.Undertow start

212INFO: starting server: Undertow - 2.2.37.Final

213Jan 08, 2026 2:06:43 AM io.undertow.Undertow stop

214INFO: stopping server: Undertow - 2.2.37.Final

215Jan 08, 2026 2:06:43 AM io.undertow.Undertow start

216INFO: starting server: Undertow - 2.2.37.Final

217Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

218INFO: stopping server: Undertow - 2.2.37.Final

219org.http4s.servlet.AsyncHttp4sServletSuite:

220 + AsyncHttp4sServlet handle GET requests 1.365s

221 + AsyncHttp4sServlet handle empty POST 0.075s

222 + AsyncHttp4sServlet handle multiple chunks upfront 0.27s

223 + AsyncHttp4sServlet handle single-chunk, deferred POST 0.098s

224 + AsyncHttp4sServlet handle two-chunk, deferred POST 0.079s

225 + AsyncHttp4sServlet handle two itsy-bitsy deferred chunk POST 0.05s

226 + AsyncHttp4sServlet should not reorder lots of itsy-bitsy chunks 0.043s

227 + AsyncHttp4sServlet work for shifted IO 0.079s

228 + AsyncHttp4sServlet timeout fires 3.025s

229Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

230INFO: starting server: Undertow - 2.2.37.Final

231Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

232INFO: stopping server: Undertow - 2.2.37.Final

233Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

234INFO: starting server: Undertow - 2.2.37.Final

235Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

236INFO: stopping server: Undertow - 2.2.37.Final

237Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

238INFO: starting server: Undertow - 2.2.37.Final

239Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

240INFO: stopping server: Undertow - 2.2.37.Final

241org.http4s.servlet.BlockingHttp4sServletSuite:

242 + Http4sBlockingServlet handle GET requests 0.04s

243 + Http4sBlockingServlet handle POST requests 0.023s

244 + Http4sBlockingServlet work for shifted IO 0.066s

245org.http4s.servlet.ServletContainerSuite:

246 + prefixMapping should append /* when prefix does not have trailing slash 0.005s

247 + prefixMapping should append * when prefix has trailing slash 0.001s

248Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

249INFO: starting server: Undertow - 2.2.37.Final

250Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

251INFO: stopping server: Undertow - 2.2.37.Final

252Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

253INFO: starting server: Undertow - 2.2.37.Final

254Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

255INFO: stopping server: Undertow - 2.2.37.Final

256Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

257INFO: starting server: Undertow - 2.2.37.Final

258Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

259INFO: stopping server: Undertow - 2.2.37.Final

260Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

261INFO: starting server: Undertow - 2.2.37.Final

262Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

263INFO: stopping server: Undertow - 2.2.37.Final

264Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

265INFO: starting server: Undertow - 2.2.37.Final

266Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

267INFO: stopping server: Undertow - 2.2.37.Final

268Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

269INFO: starting server: Undertow - 2.2.37.Final

270Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

271INFO: stopping server: Undertow - 2.2.37.Final

272Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

273INFO: starting server: Undertow - 2.2.37.Final

274Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

275INFO: stopping server: Undertow - 2.2.37.Final

276Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

277INFO: starting server: Undertow - 2.2.37.Final

278Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

279INFO: stopping server: Undertow - 2.2.37.Final

280Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

281INFO: starting server: Undertow - 2.2.37.Final

282Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

283INFO: stopping server: Undertow - 2.2.37.Final

284Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

285INFO: starting server: Undertow - 2.2.37.Final

286Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

287INFO: stopping server: Undertow - 2.2.37.Final

288Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

289INFO: starting server: Undertow - 2.2.37.Final

290Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

291INFO: stopping server: Undertow - 2.2.37.Final

292Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

293INFO: starting server: Undertow - 2.2.37.Final

294Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

295INFO: stopping server: Undertow - 2.2.37.Final

296Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

297INFO: starting server: Undertow - 2.2.37.Final

298Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

299INFO: stopping server: Undertow - 2.2.37.Final

300Jan 08, 2026 2:06:46 AM io.undertow.Undertow start

301INFO: starting server: Undertow - 2.2.37.Final

302Jan 08, 2026 2:06:46 AM io.undertow.Undertow stop

303INFO: stopping server: Undertow - 2.2.37.Final

304org.http4s.servlet.RouterInServletSuite:

305 + Http4s servlet without router should handle root request 0.028s

306 + Http4s servlet without router should handle suffix request 0.022s

307 + Http4s servlet should handle alternative-root request 0.019s

308 + Http4s servlet should handle root request 0.026s

309 + Http4s servlet should handle suffix request 0.024s

310 + Http4s servlet with non-empty context path should handle alternative-root request 0.026s

311 + Http4s servlet with non-empty context path should handle root request 0.022s

312 + Http4s servlet with non-empty context path should handle suffix request 0.029s

313 + Http4s servlet with non-empty servlet path should handle alternative-root request 0.035s

314 + Http4s servlet with non-empty servlet path should handle root request 0.025s

315 + Http4s servlet with non-empty servlet path should handle suffix request 0.019s

316 + Http4s servlet with non-empty context & servlet path should handle alternative-root request 0.025s

317 + Http4s servlet with non-empty context & servlet path should handle root request 0.029s

318 + Http4s servlet with non-empty context & servlet path should handle suffix request 0.017s

319

320************************

321Build summary:

322[{

323 "module": "http4s-servlet",

324 "compile": {"status": "ok", "tookMs": 10117, "warnings": 0, "errors": 0, "sourceVersion": "3.8"},

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

326 "test-compile": {"status": "ok", "tookMs": 3610, "warnings": 0, "errors": 0, "sourceVersion": "3.8"},

327 "test": {"status": "ok", "tookMs": 6610, "passed": 28, "failed": 0, "ignored": 0, "skipped": 0, "total": 28, "byFramework": [{"framework": "munit", "stats": {"passed": 28, "failed": 0, "ignored": 0, "skipped": 0, "total": 28}}]},

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

329 "metadata": {

330 "crossScalaVersions": ["2.12.20", "2.13.16", "3.3.6"]

331}

332}]

333************************

334[success] Total time: 24 s, completed Jan 8, 2026, 2:06:46 AM

335[0JChecking patch project/plugins.sbt...

336Checking patch project/build.properties...

337Checking patch build.sbt...

338Applied patch project/plugins.sbt cleanly.

339Applied patch project/build.properties cleanly.

340Applied patch build.sbt cleanly.