Assembly on Windows 10 error: requirement failed: Source file 'path' is a directory.

[avgolubev]

Hi.
An error appears during assembly on Windows 10:

[debug] Merging files...
[debug] Merging 'META-INF\license' with strategy 'rename'
[error] java.lang.IllegalArgumentException: requirement failed: Source file 'path_to_my_project\target\streams\_global\assemblyOption\_global\streams\assembly\ef69ba5d3d4c7e307628494fc7af678ad985b43f_58e0a7e7ff773f84d02d4f006ae9dd31ad22a0b1_da39a3ee5e6b4b0d3255bfef95601890afd80709\META-INF\license' is a directory.

But on OSX it's ok.
The problem is inside sbtassembly.MergeStrategy.rename in IO.move(f, dest).

[avgolubev]

Using sbt-assembly version 0.14.10.
And full stack trace:

at scala.Predef$.require(Predef.scala:281)
at sbt.io.IO$.copyFile(IO.scala:863)
at sbt.io.IO$.move(IO.scala:1083)
at sbtassembly.MergeStrategy$$anon$7.$anonfun$apply$4(MergeStrategy.scala:105)
at scala.collection.TraversableLike.$anonfun$flatMap$1(TraversableLike.scala:245)
at scala.collection.Iterator.foreach(Iterator.scala:941)
at scala.collection.Iterator.foreach$(Iterator.scala:941)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1429)
at scala.collection.IterableLike.foreach(IterableLike.scala:74)
at scala.collection.IterableLike.foreach$(IterableLike.scala:73)
at scala.collection.AbstractIterable.foreach(Iterable.scala:56)
at scala.collection.TraversableLike.flatMap(TraversableLike.scala:245)
at scala.collection.TraversableLike.flatMap$(TraversableLike.scala:242)
at scala.collection.AbstractTraversable.flatMap(Traversable.scala:108)
at sbtassembly.MergeStrategy$$anon$7.apply(MergeStrategy.scala:98)
at sbtassembly.MergeStrategy.apply(MergeStrategy.scala:20)
at sbtassembly.Assembly$.applyStrategy$1(Assembly.scala:110)
at sbtassembly.Assembly$.$anonfun$applyStrategies$6(Assembly.scala:117)
at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:238)
at scala.collection.Iterator.foreach(Iterator.scala:941)
at scala.collection.Iterator.foreach$(Iterator.scala:941)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1429)
at scala.collection.IterableLike.foreach(IterableLike.scala:74)
at scala.collection.IterableLike.foreach$(IterableLike.scala:73)
at scala.collection.AbstractIterable.foreach(Iterable.scala:56)
at scala.collection.TraversableLike.map(TraversableLike.scala:238)
at scala.collection.TraversableLike.map$(TraversableLike.scala:231)
at scala.collection.AbstractTraversable.map(Traversable.scala:108)
at sbtassembly.Assembly$.applyStrategies(Assembly.scala:115)
at sbtassembly.Assembly$.x$1$lzycompute$1(Assembly.scala:25)
at sbtassembly.Assembly$.x$1$1(Assembly.scala:23)
at sbtassembly.Assembly$.stratMapping$lzycompute$1(Assembly.scala:23)
at sbtassembly.Assembly$.stratMapping$1(Assembly.scala:23)
at sbtassembly.Assembly$.inputs$lzycompute$1(Assembly.scala:68)
at sbtassembly.Assembly$.inputs$1(Assembly.scala:58)
at sbtassembly.Assembly$.apply(Assembly.scala:85)
at sbtassembly.Assembly$.$anonfun$assemblyTask$1(Assembly.scala:244)
at scala.Function1.$anonfun$compose$1(Function1.scala:49)
at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
at sbt.std.Transform$$anon$4.work(Transform.scala:67)
at sbt.Execute.$anonfun$submit$2(Execute.scala:281)
at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:19)
at sbt.Execute.work(Execute.scala:290)
at sbt.Execute.$anonfun$submit$1(Execute.scala:281)
at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:178)
at sbt.CompletionService$$anon$2.call(CompletionService.scala:37)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

[avgolubev]

The problem was solved by completely deleting target directory.
Strange that clean didn't help.