sbt 1.3.0 will break the plugin

[eed3si9n]

[info] [error] java.lang.IllegalArgumentException: argument type mismatch
[info] [error]  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[info] [error]  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[info] [error]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[info] [error]  at java.lang.reflect.Method.invoke(Method.java:498)
[info] [error]  at scala.reflect.runtime.JavaMirrors$JavaMirror$JavaVanillaMethodMirror3.jinvokeraw(JavaMirrors.scala:408)
[info] [error]  at scala.reflect.runtime.JavaMirrors$JavaMirror$JavaMethodMirror.jinvoke(JavaMirrors.scala:354)
[info] [error]  at scala.reflect.runtime.JavaMirrors$JavaMirror$JavaVanillaMethodMirror.apply(JavaMirrors.scala:370)
[info] [error]  at com.lucidchart.sbt.scalafmt.CachePlatform$.fileInfo(Platform.scala:24)
[info] [error]  at com.lucidchart.sbt.scalafmt.ScalafmtCorePlugin$autoImport$.$anonfun$scalafmtCoreSettings$12(ScalafmtCorePlugin.scala:113)
[info] [error]  at scala.collection.immutable.Map$EmptyMap$.getOrElse(Map.scala:104)
[info] [error]  at com.lucidchart.sbt.scalafmt.ScalafmtCorePlugin$autoImport$.$anonfun$scalafmtCoreSettings$11(ScalafmtCorePlugin.scala:113)
[info] [error]  at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:237)
[info] [error]  at scala.collection.mutable.ResizableArray.foreach(ResizableArray.scala:62)
[info] [error]  at scala.collection.mutable.ResizableArray.foreach$(ResizableArray.scala:55)
[info] [error]  at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:49)
[info] [error]  at scala.collection.TraversableLike.map(TraversableLike.scala:237)
[info] [error]  at scala.collection.TraversableLike.map$(TraversableLike.scala:230)
[info] [error]  at scala.collection.AbstractTraversable.map(Traversable.scala:108)
[info] [error]  at com.lucidchart.sbt.scalafmt.ScalafmtCorePlugin$autoImport$.$anonfun$scalafmtCoreSettings$4(ScalafmtCorePlugin.scala:111)
[info] [error]  at com.lucidchart.sbt.scalafmt.ScalafmtCorePlugin$autoImport$.$anonfun$scalafmtCoreSettings$4$adapted(ScalafmtCorePlugin.scala:88)
[info] [error]  at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[info] [error]  at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[info] [error]  at sbt.std.Transform$$anon$4.work(Transform.scala:67)
[info] [error]  at sbt.Execute.$anonfun$submit$2(Execute.scala:280)
[info] [error]  at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:19)
[info] [error]  at sbt.Execute.work(Execute.scala:289)
[info] [error]  at sbt.Execute.$anonfun$submit$1(Execute.scala:280)
[info] [error]  at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:178)
[info] [error]  at sbt.CompletionService$$anon$2.call(CompletionService.scala:37)
[info] [error]  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[info] [error]  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[info] [error]  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[info] [error]  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[info] [error]  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[info] [error]  at java.lang.Thread.run(Thread.java:748)
[info] [error] (Compile / scalafmt / scalafmt) java.lang.IllegalArgumentException: argument type mismatch

notes

In sbt 1.2.8, sbt.util.FileHashModified is private

private final case class FileHashModified(file: File, hash: List[Byte], lastModified: Long)
    extends HashModifiedFileInfo

There's a code in the plugin to break the privacy by using reflection:

https://github.com/lucidsoftware/neo-sbt-scalafmt/blob/e8aaaed6bc2dfb284bdb667e452f2520151eef26/sbt-scalafmt/src/main/scala-2.12/com/lucidchart/sbt/scalafmt/Platform.scala

  private[this] val fileHashModified = {
    val module = mirror.reflectModule(mirror.staticModule("sbt.util.FileHashModified"))
    mirror.reflect(module.instance).reflectMethod(module.symbol.info.decl(universe.TermName("apply")).asMethod)
  }

  def fileInfo(file: File, hash: List[Byte], lastModified: Long) =
    fileHashModified(file, hash, lastModified.asInstanceOf[AnyRef]).asInstanceOf[HashModifiedFileInfo]

In sbt 1.3.0, we are taking advantage of the privacy to change the class implementation as follows:

https://github.com/sbt/util/blob/v1.3.0-M9/util-cache/src/main/scala/sbt/util/FileInfo.scala#L40-L41

private final case class FileHashModified(file: File, hashArray: Array[Byte], lastModified: Long)
    extends HashModifiedFileInfo