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Jenkins throws java.nio.charset.MalformedInputException when using slurp to read some files.

Author: vsalvis

test/test/CompilerTest.scala

@@ -255,12 +255,7 @@ abstract class CompilerTest extends DottyTest {
     processFileDir(sourceFile, { sf =>
       if (extensionsToCopy.contains(sf.extension)) {
         dest.parent.jfile.mkdirs
-        dest.toFile.writeAll("/* ==========================================\n",
-                             " * ========= AUTOMATICALLY GENERATED ========\n",
-                             " * ========= DO NOT EDIT THIS FILE ==========\n",
-                             " * ==========================================\n",
-                             " * Original: " + sf.toString + " */\n\n",
-                             sf.slurp)
+        FileManager.copyFile(sourceFile.jfile, dest.jfile)
       } else {
         log(s"WARNING: ignoring $sf")
       }