DO NOT MERGE. Debugging Jenkins file encoding error 2

Author: vsalvis

test/test/CompilerTest.scala

@@ -255,8 +255,8 @@ abstract class CompilerTest extends DottyTest {
     processFileDir(sourceFile, { sf =>
       if (extensionsToCopy.contains(sf.extension)) {
         dest.parent.jfile.mkdirs
-        println("copying " + sf.toString + " with default codec " + sf.creationCodec)
-        val contents = try { sf.slurp } catch {
+        println("copying " + sf.toString + " with UTF8 codec " + sf.creationCodec)
+        val contents = try { sf.slurp(scala.io.Codec.UTF8) } catch {
           case e: Throwable => println("==================\n=======BOOM=======\n==================\nfailed slurping file " + sf.toString); ""
         }
         dest.toFile.writeAll("/* ==========================================\n",
@@ -265,6 +265,18 @@ abstract class CompilerTest extends DottyTest {
                              " * ==========================================\n",
                              " * Original: " + sf.toString + " */\n\n",
                              contents)
+
+/* ==================
+=======BOOM=======
+==================
+failed slurping file ./src/dotty/tools/dotc/core/tasty/TastyFormat.scala
+failed slurping file ./src/dotty/tools/dotc/core/tasty/TastyFormat.scala
+failed slurping file ./src/dotty/tools/dotc/transform/PatternMatcher.scala
+failed slurping file ./src/dotty/tools/dotc/transform/PatternMatcher.scala
+
+
+*/
+
       } else {
         log(s"WARNING: ignoring $sf")
       }