Proposal: run GHC API tests on fast

[Edward Z. Yang]

I couldn't reproduce this error on x86_64 with BuildFlavour = devel2.
Is perhaps parallelism involved?

Edward

Excerpts from Joachim Breitner's message of 2014-08-23 15:44:48 +0100:
> Hi Edward,
> 
> Am Freitag, den 22.08.2014, 18:01 +0100 schrieb Edward Z.Yang:
> > OK, I've gone ahead and done this.
> 
> I’m seeing errors like this on travis, with DEBUG_STAGE2=YES, but with
> varying test cases from ghc-api:
> 
> Compile failed (status 256) errors were:
> [1 of 1] Compiling Main             ( ghcApi.hs, ghcApi.o )
> Linking ghcApi ...
> /usr/bin/ld: reopening ghcApi.o: No such file or directory
> 
> /usr/bin/ld:ghcApi.o: bfd_stat failed: No such file or directory
> /usr/bin/ld: reopening ghcApi.o: No such file or directory
> 
> /usr/bin/ld: BFD (GNU Binutils for Ubuntu) 2.22 internal error, aborting at ../../bfd/merge.c line 873 in _bfd_merged_section_offset
> 
> /usr/bin/ld: Please report this bug.
> 
> collect2: ld returned 1 exit status
> 
> *** unexpected failure for ghcApi(normal)
> 
> 
> 
> Wrong exit code (expected 0 , actual 2 )
> Stdout:
> 
> Stderr:
> /usr/bin/ld: reopening T6145.o: No such file or directory
> 
> /usr/bin/ld:T6145.o: bfd_stat failed: No such file or directory
> /usr/bin/ld: reopening T6145.o: No such file or directory
> 
> /usr/bin/ld: BFD (GNU Binutils for Ubuntu) 2.22 internal error, aborting at ../../bfd/merge.c line 873 in _bfd_merged_section_offset
> 
> /usr/bin/ld: Please report this bug.
> 
> collect2: ld returned 1 exit status
> make[3]: *** [T6145] Error 1
> 
> *** unexpected failure for T6145(normal)
> 
> e.g.
> https://s3.amazonaws.com/archive.travis-ci.org/jobs/33351170/log.txt
> https://s3.amazonaws.com/archive.travis-ci.org/jobs/33356796/log.txt
> 
> Any idea?
> 
> 
> Greetings,
> Joachim
>