test failure under root user

[qrilka]

Not sure if it's a valid issue but running tests under root fails with

  tests/Main.hs:125:5: 
  1) copyDirRecur, when source directory is read-only, copies directory just as well (preserving permissions)
       expected: Permissions {readable = True, writable = False, executable = False, searchable = True}
        but got: Permissions {readable = True, writable = True, executable = False, searchable = True}

  To rerun use: --match "/copyDirRecur/when source directory is read-only/copies directory just as well (preserving permissions)/"

[mrkkrp]

Not sure what is happening here.