validate failure in SafeLang15

[Simon Marlow]

My validates sometimes fail this test:

Compile failed (status 256) errors were:
[1 of 2] Compiling SafeLang13_A     ( SafeLang13_A.hs, SafeLang13_A.o )
./SafeLang13_A.o: getFileStatus: does not exist (No such file or directory)

*** unexpected failure for SafeLang15(normal)



But the test runs fine in isolation.  It looks like a race condition to 
me.  Perhaps multiple tests are using the same module?


Cheers,
	Simon