NoSuchElementException when running migrateTypes

[kluen]

I'm trying to migrate a project to Scala 3 and am following the migration guide. At the migrateTypes step, I'm running into this error:

[info] Defining scalaVersion
[info] The new value will be used by Compile / bspBuildTarget, Compile / dependencyTreeCrossProjectId and 71 others.
[info] 	Run `last` for details.
[info] Reapplying settings...
[info] set current project to <redacted> (in build file:<redacted>)
[info]
[info] Migrating types in <redacted> / Compile
[info]
bad option '-Ymacro-annotations' was ignored
bad option '-Xsource:3' was ignoredeTypes 1s
missing argument for option -Wunused
  scalac -help  gives more information
[error] Migration of <redacted> / compile failed.
[error] stack trace is suppressed; run last internalMigrateTypes for the full output
[error] (internalMigrateTypes) java.util.NoSuchElementException: None.get
[error] Total time: 3 s, completed 12 Jan 2024, 5:05:32 pm
[info] Defining scalaVersion
[info] The new value will be used by Compile / bspBuildTarget, Compile / dependencyTreeCrossProjectId and 71 others.
[info] 	Run `last` for details.
[info] Reapplying settings...
[info] set current project to <redacted> (in build file:<redacted>)
[error] Migration of <redacted> failed.

So as suggested, I ran the command given:

sbt:<redacted>> last internalMigrateTypes
[error] java.util.NoSuchElementException: None.get
[error] 	at scala.None$.get(Option.scala:627)
[error] 	at scala.None$.get(Option.scala:626)
[error] 	at migrate.compiler.interfaces.Scala3Driver.setup(Scala3Driver.java:22)
[error] 	at migrate.compiler.interfaces.Scala3Driver.setupCompiler(Scala3Driver.java:18)
[error] 	at migrate.compiler.interfaces.Scala3Compiler.setup(Scala3Compiler.java:46)
[error] 	at migrate.Scala3Migrate.$anonfun$setupScala3Compiler$2(Scala3Migrate.scala:89)
[error] 	at scala.util.Try$.apply(Try.scala:210)
[error] 	at migrate.Scala3Migrate.setupScala3Compiler(Scala3Migrate.scala:89)
[error] 	at migrate.Scala3Migrate.migrate(Scala3Migrate.scala:49)
[error] 	at migrate.interfaces.MigrateImpl.$anonfun$migrate$15(MigrateImpl.scala:54)
[error] 	at scala.util.Success.flatMap(Try.scala:258)
[error] 	at migrate.interfaces.MigrateImpl.$anonfun$migrate$13(MigrateImpl.scala:40)
[error] 	at scala.util.Success.flatMap(Try.scala:258)
[error] 	at migrate.interfaces.MigrateImpl.$anonfun$migrate$12(MigrateImpl.scala:39)
[error] 	at scala.util.Success.flatMap(Try.scala:258)
[error] 	at migrate.interfaces.MigrateImpl.$anonfun$migrate$11(MigrateImpl.scala:38)
[error] 	at scala.util.Success.flatMap(Try.scala:258)
[error] 	at migrate.interfaces.MigrateImpl.$anonfun$migrate$8(MigrateImpl.scala:36)
[error] 	at scala.util.Success.flatMap(Try.scala:258)
[error] 	at migrate.interfaces.MigrateImpl.$anonfun$migrate$5(MigrateImpl.scala:34)
[error] 	at scala.util.Success.flatMap(Try.scala:258)
[error] 	at migrate.interfaces.MigrateImpl.$anonfun$migrate$4(MigrateImpl.scala:33)
[error] 	at scala.util.Success.flatMap(Try.scala:258)
[error] 	at migrate.interfaces.MigrateImpl.$anonfun$migrate$2(MigrateImpl.scala:32)
[error] 	at scala.util.Success.flatMap(Try.scala:258)
[error] 	at migrate.interfaces.MigrateImpl.migrate(MigrateImpl.scala:31)
[error] 	at migrate.TypeInferenceMigration$.$anonfun$migrateConfig$4(TypeInferenceMigration.scala:51)
[error] 	at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[error] 	at scala.util.Try$.apply(Try.scala:213)
[error] 	at migrate.TypeInferenceMigration$.$anonfun$migrateConfig$1(TypeInferenceMigration.scala:40)
[error] 	at migrate.TypeInferenceMigration$.$anonfun$migrateConfig$1$adapted(TypeInferenceMigration.scala:29)
[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$2.call(CompletionService.scala:65)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] 	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
[error] 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[error] 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[error] 	at java.base/java.lang.Thread.run(Thread.java:833)
[error] (internalMigrateTypes) java.util.NoSuchElementException: None.get

This is unfortunately not useful to the user.

It turns out, when you look a bit more closely at the output, there is a hint at what is actually the problem:

missing argument for option -Wunused

I removed the option and it works. It would be great if this message is shown in the [error] output instead of the exception.

The version of the plugin I used is 0.6.2.

[adpi2]

Thanks for the report!