Scala3 crashes due to binary-incompatible upgrade when it should emit an error instead

[pmeheut]

A project I've been working on compiles perfectly but as soon as I add "com.raquo" %%% "waypoint" % "6.0.0" to the dependencies, the compiler crashes.
Even if no code is referencing the library.

Compiler version

3.3.0

Minimized code

The problem occurs in a full-stack project with Scala JVM/Scala JS cross-compilation, Caliban, ZIO, Quill and when I had a library to the dependencies in sbt.
I have tried to reproduce it but it disappears if the code is too simple.
If needed, I could create a repository with moke versions of the proprietary code but the problem and stack is exactly the same as #16439

Output (click arrow to expand)

error] ## Exception when compiling 7 sources to <path>/target/scala-3.3.0/classes
[error] java.lang.AssertionError: assertion failed
[error] scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:11)
[error] dotty.tools.dotc.core.Types$MethodType.<init>(Types.scala:3901)
[error] dotty.tools.dotc.core.Types$CachedMethodType.<init>(Types.scala:3921)
[error] dotty.tools.dotc.core.Types$MethodTypeCompanion.apply(Types.scala:4013)
[error] dotty.tools.dotc.core.Types$MethodTypeCompanion.apply(Types.scala:4012)
[error] dotty.tools.dotc.core.Types$LambdaTypeCompanion.apply(Types.scala:3933)
[error] dotty.tools.dotc.core.TypeErasure.eraseInfo(TypeErasure.scala:752)
[error] dotty.tools.dotc.core.TypeErasure$.transformInfo(TypeErasure.scala:244)
[error] dotty.tools.dotc.transform.Erasure.transform(Erasure.scala:97)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:827)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:844)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:120)
[error] dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:114)
[error] dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:107)
[error] dotty.tools.dotc.core.Symbols$.toDenot(Symbols.scala:494)
[error] dotty.tools.dotc.transform.Mixin.needsTraitSetter(Mixin.scala:174)
[error] dotty.tools.dotc.transform.Mixin.transformSym$$anonfun$1(Mixin.scala:153)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:333)
[error] dotty.tools.dotc.core.Scopes$Scope.foreach(Scopes.scala:93)
[error] dotty.tools.dotc.transform.Mixin.transformSym(Mixin.scala:157)
[error] dotty.tools.dotc.core.DenotTransformers$SymTransformer.transform(DenotTransformers.scala:70)
[error] dotty.tools.dotc.core.DenotTransformers$SymTransformer.transform$(DenotTransformers.scala:65)
[error] dotty.tools.dotc.transform.Mixin.transform(Mixin.scala:113)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.goForward$1(Denotations.scala:827)
[error] dotty.tools.dotc.core.Denotations$SingleDenotation.current(Denotations.scala:873)
[error] dotty.tools.dotc.core.Symbols$Symbol.recomputeDenot(Symbols.scala:120)
[error] dotty.tools.dotc.core.Symbols$Symbol.computeDenot(Symbols.scala:114)
[error] dotty.tools.dotc.core.Symbols$Symbol.denot(Symbols.scala:107)
[error] dotty.tools.dotc.core.Symbols$.toDenot(Symbols.scala:494)
[error] dotty.tools.dotc.transform.Dependencies.isLocal(Dependencies.scala:74)
[error] dotty.tools.dotc.transform.Dependencies.process(Dependencies.scala:217)
[error] dotty.tools.dotc.transform.LambdaLift$Lifter$$anon$1.process(LambdaLift.scala:41)
[error] dotty.tools.dotc.transform.LambdaLift$Lifter$$anon$1.process(LambdaLift.scala:40)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:240)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1551)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.traverseChildren(Trees.scala:1661)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:241)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1545)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.traverseChildren(Trees.scala:1661)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:241)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1551)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.traverseChildren(Trees.scala:1661)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:241)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1563)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.traverseChildren(Trees.scala:1661)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:241)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.fold$1(Trees.scala:1532)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.apply(Trees.scala:1534)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1565)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.traverseChildren(Trees.scala:1661)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:241)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1620)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.traverseChildren(Trees.scala:1661)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:241)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1627)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.traverseChildren(Trees.scala:1661)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:241)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1624)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.traverseChildren(Trees.scala:1661)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:241)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.apply(Trees.scala:1660)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.fold$1(Trees.scala:1532)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.apply(Trees.scala:1534)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeAccumulator.foldOver(Trees.scala:1633)
[error] dotty.tools.dotc.ast.Trees$Instance$TreeTraverser.traverseChildren(Trees.scala:1661)
[error] dotty.tools.dotc.transform.Dependencies$CollectDependencies.traverse(Dependencies.scala:241)
[error] dotty.tools.dotc.transform.Dependencies.<init>(Dependencies.scala:283)
[error] dotty.tools.dotc.transform.LambdaLift$Lifter$$anon$1.<init>(LambdaLift.scala:36)
[error] dotty.tools.dotc.transform.LambdaLift$Lifter.<init>(LambdaLift.scala:49)
[error] dotty.tools.dotc.transform.LambdaLift.prepareForUnit(LambdaLift.scala:276)
[error] dotty.tools.dotc.transform.MegaPhase.prepUnit(MegaPhase.scala:1046)
[error] dotty.tools.dotc.transform.MegaPhase.transformUnit(MegaPhase.scala:453)
[error] dotty.tools.dotc.transform.MegaPhase.run(MegaPhase.scala:466)
[error] dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:324)
[error] scala.collection.immutable.List.map(List.scala:250)
[error] dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:328)
[error] dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:247)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1321)
[error] dotty.tools.dotc.Run.runPhases$1(Run.scala:263)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:271)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:280)
[error] dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:67)
[error] dotty.tools.dotc.Run.compileUnits(Run.scala:280)
[error] dotty.tools.dotc.Run.compileSources(Run.scala:195)
[error] dotty.tools.dotc.Run.compile(Run.scala:179)
[error] dotty.tools.dotc.Driver.doCompile(Driver.scala:35)
[error] dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:88)
[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:163)
[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$5(Incremental.scala:179)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:177)
[error] sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:463)
[error] sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
[error] sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263)
[error] sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:418)
[error] sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:506)
[error] sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:405)
[error] sbt.internal.inc.Incremental$.apply(Incremental.scala:171)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:534)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:488)
[error] sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:425)
[error] sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
[error] sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2363)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2313)
[error] sbt.internal.server.BspCompileTask$.$anonfun$compute$1(BspCompileTask.scala:30)
[error] sbt.internal.io.Retry$.apply(Retry.scala:46)
[error] sbt.internal.io.Retry$.apply(Retry.scala:28)
[error] sbt.internal.io.Retry$.apply(Retry.scala:23)
[error] sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:30)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2311)
[error] scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error] sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error] sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error] sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error] sbt.Execute.work(Execute.scala:291)
[error] sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error] sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[error] java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[error] java.base/java.lang.Thread.run(Thread.java:833)
[error]            ```
</details>

[smarter]

If needed, I could create a repository with moke versions of the proprietary code but the problem and stack is exactly the same as #16439

That would be really helpful yes!

[odersky]

The previous error from #16439 was fixed. Can you verify that the error is still present when compiling with the latest nightly?

[pmeheut]

I just tried with Scala 3.3.2-RC1-bin-20230705-13f877b-NIGHTLY
Same error:

``
unhandled exception while running MegaPhase{lambdaLift, elimStaticThis, countOuterAccesses} on /Users/pascal/Qarmin/gitlab/qarmin/development/WebReport/webPage/src/main/scala/io/softhedge/webreport/pages/TimePeriod.scala

An unhandled exception was thrown in the compiler.
Please file a crash report here:
https://github.com/lampepfl/dotty/issues/new/choose

 while compiling: /Users/pascal/Qarmin/gitlab/qarmin/development/WebReport/webPage/src/main/scala/io/softhedge/webreport/pages/TimePeriod.scala
    during phase: MegaPhase{lambdaLift, elimStaticThis, countOuterAccesses}
            mode: Mode(ImplicitsEnabled)
 library version: version 2.13.10
compiler version: version 3.3.2-RC1-bin-20230705-13f877b-NIGHTLY-git-13f877b
        settings: -bootclasspath /Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala3-library_3/3.3.2-RC1-bin-20230705-13f877b-NIGHTLY/scala3-library_3-3.3.2-RC1-bin-20230705-13f877b-NIGHTLY.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala-library/2.13.10/scala-library-2.13.10.jar -classpath /Users/pascal/Qarmin/gitlab/qarmin/development/WebReport/webPage/target/scala-3.3.2-RC1-bin-20230705-13f877b-NIGHTLY/classes:/Users/pascal/Qarmin/gitlab/qarmin/development/WebReport/core/js/target/scala-3.3.2-RC1-bin-20230705-13f877b-NIGHTLY/classes:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala3-library_sjs1_3/3.3.2-RC1-bin-20230705-13f877b-NIGHTLY/scala3-library_sjs1_3-3.3.2-RC1-bin-20230705-13f877b-NIGHTLY.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-library_2.13/1.13.0/scalajs-library_2.13-1.13.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/github/ghostdogpr/caliban-client_3/2.0.1/caliban-client_3-2.0.1.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/webjars/npm/plotly.js-dist-min/2.12.1/plotly.js-dist-min-2.12.1.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-dom_sjs1_3/2.3.0/scalajs-dom_sjs1_3-2.3.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/scalatags_sjs1_3/0.12.0/scalatags_sjs1_3-0.12.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/dev/zio/zio_sjs1_3/2.0.5/zio_sjs1_3-2.0.5.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/softwaremill/sttp/client3/core_sjs1_3/3.8.3/core_sjs1_3-3.8.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/softwaremill/sttp/client3/circe_sjs1_3/3.8.3/circe_sjs1_3-3.8.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/softwaremill/sttp/client3/zio_sjs1_3/3.8.3/zio_sjs1_3-3.8.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/raquo/laminar_sjs1_3/0.14.5/laminar_sjs1_3-0.14.5.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/be/doeraene/web-components-ui5_sjs1_3/1.9.0/web-components-ui5_sjs1_3-1.9.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/openmole/scala-js-plotlyjs_sjs1_3/1.6.2/scala-js-plotlyjs_sjs1_3-1.6.2.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/raquo/waypoint_sjs1_3/6.0.0/waypoint_sjs1_3-6.0.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/github/ghostdogpr/caliban-client_sjs1_3/2.0.1/caliban-client_sjs1_3-2.0.1.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/github/cquiroz/scala-java-time_sjs1_3/2.4.0/scala-java-time_sjs1_3-2.4.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/github/pmeheut/nscala-java-time_sjs1_3/0.1.1/nscala-java-time_sjs1_3-0.1.1.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/circe/circe-generic_sjs1_3/0.14.3/circe-generic_sjs1_3-0.14.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/circe/circe-parser_sjs1_3/0.14.3/circe-parser_sjs1_3-0.14.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/laminext/core_sjs1_3/0.14.3/core_sjs1_3-0.14.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/laminext/fetch_sjs1_3/0.14.3/fetch_sjs1_3-0.14.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/laminext/fetch-circe_sjs1_3/0.14.3/fetch-circe_sjs1_3-0.14.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/laminext/websocket_sjs1_3/0.14.3/websocket_sjs1_3-0.14.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/laminext/websocket-circe_sjs1_3/0.14.3/websocket-circe_sjs1_3-0.14.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/github/ghostdogpr/caliban-client-laminext_sjs1_3/2.0.1/caliban-client-laminext_sjs1_3-2.0.1.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-js/scalajs-javalib/1.13.0/scalajs-javalib-1.13.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/scala-lang/scala3-library_3/3.1.3/scala3-library_3-3.1.3.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/io/circe/circe-parser_3/0.14.2/circe-parser_3-0.14.2.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/softwaremill/sttp/client3/core_3/3.7.2/core_3-3.7.2.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/softwaremill/sttp/client3/circe_3/3.7.2/circe_3-3.7.2.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/sourcecode_sjs1_3/0.3.0/sourcecode_sjs1_3-0.3.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/lihaoyi/geny_sjs1_3/1.0.0/geny_sjs1_3-1.0.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/dev/zio/zio-internal-macros_sjs1_3/2.0.5/zio-internal-macros_sjs1_3-2.0.5.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/dev/zio/zio-stacktracer_sjs1_3/2.0.5/zio-stacktrace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nel_3/2.7.0/cats-kernel_3-2.7.0.jar:/Users/pascal/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/org/typelevel/simulacrum-scalafix-annotations_3/0.5.4/simulacrum-scalafix-annotations_3-0.5.4.jar -d /Users/pascal/Qarmin/gitlab/qarmin/development/WebReport/webPage/target/scala-3.3.2-RC1-bin-20230705-13f877b-NIGHTLY/classes -scalajs true

            tree: EmptyTree
   tree position: :<unknown>
       tree type: <notype>
          symbol: val <none>
       call site: package <root> in module class <root>

== Source file context for tree position ==

[error] ## Exception when compiling 7 sources to /Users/pascal/Qarmin/gitlab/qarmin/development/WebReport/webPage/target/scala-3.3.2-RC1-bin-20230705-13f877b-NIGHTLY/classes
[error] java.lang.AssertionError: assertion failed
[error] scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:11)
[error] dotty.tools.dotc.core.Types$MethodType.(Types.scala:3981)
[error] dotty.tools.dotc.core.Types$CachedMethodType.(Types.scala:3999)
...
``

[odersky]

Ah, OK. That's actually does not look like the error in #16439. So, yes, a minimization would be really helpful!

[pmeheut]

There is an example here: git@github.com:pmeheut/scala_bug.git
This is the smallest I could do reasonably.

sbt compile works.
Uncomment ++ waypointCross.value line 16 in build.sbt and sbt compilefails with the error above.

[smarter]

I figured out the root cause of the issue: when waypoint is added as a library, the transitive dependency com.raquo::airstream was upgraded from 0.14.5 to 15.0.0, this upgrade is not binary-compatible and in particular it removes the SwitchFutureStrategy object which the compiler tries to access while computing the trait setters of com.raquo.laminar.api.L.Val

• I'm not sure why sbt did not emit an eviction warning? /cc @eed3si9n
• We should ensure the compiler detects missing dependencies early and fail gracefully instead of crashing.