This test is actually passing. I unfudged the test with commit https://github.com/perl6/roast/commit/629b80d6ee.
[perl #125076] Roast rakudo skip/todo test:./S16-filehandles/io.t line:266 reason: 'java.nio.charset.UnmappableCharacterException'
Christian Bartolomaeus via RT Sat, 09 May 2015 00:59:11 -0700
