Nightly Dotty workflow of 2022-01-25 failed

[github-actions]

See https://github.com/lampepfl/dotty/actions/runs/1743370721

[som-snytt]

It's the old %1 is not a valid Win32 application.

[info] Test dotty.tools.dotc.CompilationTests.negAll started
Fatal compiler crash when compiling: tests\neg\forwardCompat-nestedSumMirror:
Cannot run program "C:\Windows\ServiceProfiles\NetworkService\.cache\dotty\test\compilers\scala3-3.0.2/bin/scalac": CreateProcess error=193, %1 is not a valid Win32 application
	at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
	at java.lang.Runtime.exec(Runtime.java:621)
	at java.lang.Runtime.exec(Runtime.java:486)
	at dotty.tools.vulpix.ParallelTesting$Test.compileWithOtherCompiler(ParallelTesting.scala:539)
	at dotty.tools.vulpix.ParallelTesting$CompilationLogic.compileTestSource$$anonfun$1$$anonfun$1(ParallelTesting.scala:222)
	at scala.collection.immutable.List.map(List.scala:250)
	at dotty.tools.vulpix.ParallelTesting$CompilationLogic.compileTestSource$$anonfun$1(ParallelTesting.scala:222)
	at scala.util.Try$.apply(Try.scala:210)
	at dotty.tools.vulpix.ParallelTesting$CompilationLogic.dotty$tools$vulpix$ParallelTesting$CompilationLogic$$compileTestSource(ParallelTesting.scala:223)
	at dotty.tools.vulpix.ParallelTesting$$anon$5.checkTestSource$$anonfun$1(ParallelTesting.scala:269)
	at dotty.tools.vulpix.ParallelTesting$Test.tryCompile(ParallelTesting.scala:437)
	at dotty.tools.vulpix.ParallelTesting$$anon$5.checkTestSource(ParallelTesting.scala:272)
	at dotty.tools.vulpix.ParallelTesting$Test$LoggedRunnable.run(ParallelTesting.scala:340)
	at dotty.tools.vulpix.ParallelTesting$Test$LoggedRunnable.run$(ParallelTesting.scala:322)
	at dotty.tools.vulpix.ParallelTesting$$anon$5.run(ParallelTesting.scala:267)
	at java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1386)
	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:175)

[nicolasstucki]

@prolativ is this related to the error you are fixing?

[prolativ]

Yes, I'm still fixing this (the problem is deeper than just forward slashes on windows or .bat missing in the name of the script). I'm trying to make a workaround for the problem by using coursier.
Duplicate of #14300
Should be fixed by #14301 when it starts working

[prolativ]

Actually now I realized that there was also an error in publishing, which is not related to my problems with windows