Internal library tests in Cabal's package test suite fail on Windows

[grayjay]

BuildDeps/InternalLibrary2:    FAIL (10.52s)
  executable should have linked with the internal library
  expected: "foofoomyLibFunc internal"
   but got: "foo\rfoo\rmyLibFunc internal"
BuildDeps/InternalLibrary3:    FAIL (7.24s)
  executable should have linked with the internal library
  expected: "foofoomyLibFunc internal"
   but got: "foo\rfoo\rmyLibFunc internal"
BuildDeps/InternalLibrary4:    FAIL (9.04s)
  executable should have linked with the installed library
  expected: "foofoomyLibFunc installed"
   but got: "foo\rfoo\rmyLibFunc installed"

Full log: https://ci.appveyor.com/project/grayjay/cabal/build/1.0.62