assertion failed: unresolved symbols: type s (line 32) #11398 when pickling

[Krever]

Compiler version

3.6.2

Minimized code

Sorry, I'm not able to minimize the code.
The error is visible here: https://github.com/business4s/workflows4s/actions/runs/12265223732/job/34220804055?pr=12
The file that raises the crash is https://github.com/business4s/workflows4s/blob/56ed22d301ea4d02e314bc1eac7bb0967e7d2229/workflows4s-core/src/main/scala/workflows4s/wio/Interpreter.scala

Output (click arrow to expand)

[info] compiling 39 Scala sources to /home/runner/work/workflows4s/workflows4s/workflows4s-core/target/scala-3.6.2/classes ...

  unhandled exception while running pickler on /home/runner/work/workflows4s/workflows4s/workflows4s-core/src/main/scala/workflows4s/wio/Interpreter.scala

  An unhandled exception was thrown in the compiler.
  Please file a crash report here:
  https://github.com/scala/scala3/issues/new/choose
  For non-enriched exceptions, compile with -Xno-enrich-error-messages.

     while compiling: /home/runner/work/workflows4s/workflows4s/workflows4s-core/src/main/scala/workflows4s/wio/Interpreter.scala
        during phase: pickler
                mode: Mode(ImplicitsEnabled,ReadPositions)
     library version: version 2.13.15
    compiler version: version 3.6.2
            settings: -Wunused List(imports) -Xmax-inlines 64 -Xsemanticdb true -bootclasspath /home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala3-library_3/3.6.2/scala3-library_3-3.6.2.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.15/scala-library-2.13.15.jar -classpath /home/runner/work/workflows4s/workflows4s/workflows4s-core/target/scala-3.6.2/classes:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/typelevel/cats-effect_3/3.5.5/cats-effect_3-3.5.5.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/com/typesafe/scala-logging/scala-logging_3/3.9.5/scala-logging_3-3.9.5.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/io/circe/circe-core_3/0.14.10/circe-core_3-0.14.10.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/io/circe/circe-generic_3/0.14.10/circe-generic_3-0.14.10.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/sourcecode_3/0.4.2/sourcecode_3-0.4.2.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/typelevel/cats-effect-kernel_3/3.5.5/cats-effect-kernel_3-3.5.5.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/typelevel/cats-effect-std_3/3.5.5/cats-effect-std_3-3.5.5.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/slf4j/slf4j-api/1.7.36/slf4j-api-1.7.36.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/io/circe/circe-numbers_3/0.14.10/circe-numbers_3-0.14.10.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/typelevel/cats-core_3/2.12.0/cats-core_3-2.12.0.jar:/home/runner/.cache/coursier/v1/https/repo1.maven.org/maven2/org/typelevel/cats-kernel_3/2.12.0/cats-kernel_3-2.12.0.jar -d /home/runner/work/workflows4s/workflows4s/workflows4s-core/target/scala-3.6.2/classes -no-indent true -semanticdb-target /home/runner/work/workflows4s/workflows4s/workflows4s-core/target/scala-3.6.2/meta

[error] ## Exception when compiling 39 sources to /home/runner/work/workflows4s/workflows4s/workflows4s-core/target/scala-3.6.2/classes
[error] java.lang.AssertionError: assertion failed: unresolved symbols: type s (line 32) #11389 when pickling /home/runner/work/workflows4s/workflows4s/workflows4s-core/src/main/scala/workflows4s/wio/Interpreter.scala
[error] scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8)
[error] dotty.tools.dotc.core.tasty.TreePickler.pickle(TreePickler.scala:950)
[error] dotty.tools.dotc.transform.Pickler.run$$anonfun$1$$anonfun$1(Pickler.scala:306)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:334)
[error] dotty.tools.dotc.transform.Pickler.run$$anonfun$1(Pickler.scala:279)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:334)
[error] dotty.tools.dotc.transform.Pickler.run(Pickler.scala:278)
[error] dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:380)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:334)
[error] dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:373)
[error] dotty.tools.dotc.transform.Pickler.runPhase$1(Pickler.scala:392)
[error] dotty.tools.dotc.transform.Pickler.runOn(Pickler.scala:398)
[error] dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:343)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323)
[error] dotty.tools.dotc.Run.runPhases$1(Run.scala:336)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:384)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:396)
[error] dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
[error] dotty.tools.dotc.Run.compileUnits(Run.scala:396)
[error] dotty.tools.dotc.Run.compileSources(Run.scala:282)
[error] dotty.tools.dotc.Run.compile(Run.scala:267)
[error] dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
[error] dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)
[error] dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
[error] sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:193)
[error] scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[error] sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:248)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:183)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:[16](https://github.com/business4s/workflows4s/actions/runs/12265223732/job/34220804055?pr=12#step:5:17)3)
[error] sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:211)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:534)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:534)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:180)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:[17](https://github.com/business4s/workflows4s/actions/runs/12265223732/job/34220804055?pr=12#step:5:18)8)
[error] sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:464)
[error] sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
[error] sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263)
[error] sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:419)
[error] sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:506)
[error] sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:406)
[error] sbt.internal.inc.Incremental$.apply(Incremental.scala:172)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:534)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:488)
[error] sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:425)
[error] sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
[error] sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2371)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2321)
[error] sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:31)
[error] sbt.internal.io.Retry$.apply(Retry.scala:47)
[error] sbt.internal.io.Retry$.apply(Retry.scala:29)
[error] sbt.internal.io.Retry$.apply(Retry.scala:24)
[error] sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:31)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2319)
[error] scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:63)
[error] sbt.std.Transform$$anon$4.work(Transform.scala:69)
[error] sbt.Execute.$anonfun$submit$2(Execute.scala:283)
[error] sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:24)
[error] sbt.Execute.work(Execute.scala:292)
[error] sbt.Execute.$anonfun$submit$1(Execute.scala:283)
[error] sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] sbt.CompletionService$$anon$2.call(CompletionService.scala:65)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error] java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error] java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
[error] java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
[error] java.base/java.lang.Thread.run(Thread.java:1583)
[error]            
[error] java.lang.AssertionError: assertion failed: unresolved symbols: type s (line 32) #11389 when pickling /home/runner/work/workflows4s/workflows4s/workflows4s-core/src/main/scala/workflows4s/wio/Interpreter.scala
[error] 	at scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8)
[error] 	at dotty.tools.dotc.core.tasty.TreePickler.pickle(TreePickler.scala:950)
[error] 	at dotty.tools.dotc.transform.Pickler.run$$anonfun$1$$anonfun$1(Pickler.scala:306)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.collection.immutable.List.foreach(List.scala:334)
[error] 	at dotty.tools.dotc.transform.Pickler.run$$anonfun$1(Pickler.scala:279)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.collection.immutable.List.foreach(List.scala:334)
[error] 	at dotty.tools.dotc.transform.Pickler.run(Pickler.scala:278)
[error] 	at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:380)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.collection.immutable.List.foreach(List.scala:334)
[error] 	at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:373)
[error] 	at dotty.tools.dotc.transform.Pickler.runPhase$1(Pickler.scala:392)
[error] 	at dotty.tools.dotc.transform.Pickler.runOn(Pickler.scala:398)
[error] 	at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:343)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] 	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] 	at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323)
[error] 	at dotty.tools.dotc.Run.runPhases$1(Run.scala:336)
[error] 	at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:384)
[error] 	at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:396)
[error] 	at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:69)
[error] 	at dotty.tools.dotc.Run.compileUnits(Run.scala:396)
[error] 	at dotty.tools.dotc.Run.compileSources(Run.scala:282)
[error] 	at dotty.tools.dotc.Run.compile(Run.scala:267)
[error] 	at dotty.tools.dotc.Driver.doCompile(Driver.scala:37)
[error] 	at dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:141)
[error] 	at dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
[error] 	at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:193)
[error] 	at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:248)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:[18](https://github.com/business4s/workflows4s/actions/runs/12265223732/job/34220804055?pr=12#step:5:19)3)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163)
[error] 	at sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163)
[error] 	at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:211)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:534)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:534)
[error] 	at sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:180)
[error] 	at sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:178)
[error] 	at sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:464)
[error] 	at sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
[error] 	at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
[error] 	at sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
[error] 	at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263)
[error] 	at sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:4[19](https://github.com/business4s/workflows4s/actions/runs/12265223732/job/34220804055?pr=12#step:5:20))
[error] 	at sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:506)
[error] 	at sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:406)
[error] 	at sbt.internal.inc.Incremental$.apply(Incremental.scala:172)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:534)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:488)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:425)
[error] 	at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
[error] 	at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2371)
[error] 	at sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2321)
[error] 	at sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:31)
[error] 	at sbt.internal.io.Retry$.apply(Retry.scala:47)
[error] 	at sbt.internal.io.Retry$.apply(Retry.scala:29)
[error] 	at sbt.internal.io.Retry$.apply(Retry.scala:24)
[error] 	at sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:31)
[error] 	at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2319)
[error] 	at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] 	at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:63)
[error] 	at sbt.std.Transform$$anon$4.work(Transform.scala:69)
[error] 	at sbt.Execute.$anonfun$submit$2(Execute.scala:283)
[error] 	at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:24)
[error] 	at sbt.Execute.work(Execute.scala:292)
[error] 	at sbt.Execute.$anonfun$submit$1(Execute.scala:283)
[error] 	at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] 	at sbt.CompletionService$$anon$2.call(CompletionService.scala:65)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error] 	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:572)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
[error] 	at java.base/java.lang.Thread.run(Thread.java:1583)
[error] (workflows4s-core / Compile / compileIncremental) java.lang.AssertionError: assertion failed: unresolved symbols: type s (line 32) #11389 when pickling /home/runner/work/workflows4s/workflows4s/workflows4s-core/src/main/scala/workflows4s/wio/Interpreter.scala
[error] Total time: 13 s, completed Dec 10, [20](https://github.com/business4s/workflows4s/actions/runs/12265223732/job/34220804055?pr=12#step:5:21)24, 9:43:31 PM