DO NOT MERGE. Debugging Jenkins file encoding error

Author: vsalvis

test/test/CompilerTest.scala

@@ -255,7 +255,16 @@ abstract class CompilerTest extends DottyTest {
     processFileDir(sourceFile, { sf =>
       if (extensionsToCopy.contains(sf.extension)) {
         dest.parent.jfile.mkdirs
-        FileManager.copyFile(sourceFile.jfile, dest.jfile)
+        println("copying " + sf.toString + " with default codec " + sf.creationCodec)
+        val contents = try { sf.slurp } catch {
+          case e: Throwable => println("==================\n=======BOOM=======\n==================\nfailed slurping file " + sf.toString); ""
+        }
+        dest.toFile.writeAll("/* ==========================================\n",
+                             " * ========= AUTOMATICALLY GENERATED ========\n",
+                             " * ========= DO NOT EDIT THIS FILE ==========\n",
+                             " * ==========================================\n",
+                             " * Original: " + sf.toString + " */\n\n",
+                             contents)
       } else {
         log(s"WARNING: ignoring $sf")
       }