[GHC] #9775: "Failed to remove" errors during Windows build from hsc2hs

[GHC]

#9775: "Failed to remove" errors during Windows build from hsc2hs
---------------------------------+----------------------------------------
        Reporter:  gintas        |                Owner:  Phyx-
            Type:  bug           |               Status:  upstream
        Priority:  high          |            Milestone:  8.2.1
       Component:  hsc2hs        |              Version:  7.8.3
      Resolution:                |             Keywords:
Operating System:  Windows       |         Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
---------------------------------+----------------------------------------

Comment (by Phyx-):

 I currently have a new version of the pull request, just need to finish
 testing.

 I also committed a workaround for this in the testsuite. The error seems
 to not change the exit code as it seems to be mostly informational. Also
 the work seems to be done it's just cleaning up that fails. So I had the
 testsuite just strip this message out if it's found.

 The test runs shouldn't be reporting this anymore.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9775#comment:11>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler