I see one test failing consistently one my Linux box (while it works
fine on Mac):
language.when ... failed
% 'btest-diff out' failed unexpectedly (exit code 1)
% cat .diag
== File ===============================
done
lookup successful
== Diff ===============================
--- /tmp/test-diff.24485.out.baseline.tmp 2012-09-24 17:40:03.554905092 +0000
+++ /tmp/test-diff.24485.out.tmp 2012-09-24 17:40:03.567905581 +0000
@@ -1 +1,2 @@
done
+lookup successful