Originally reported at fpco/stackage#1299 by @DanBurton.
Preprocessing test suite 'Tests' for serialport-0.4.7...
[1 of 1] Compiling Main ( tests/Tests.hs, dist/build/Tests/Tests-tmp/Main.o )
Linking dist/build/Tests/Tests ...
> /tmp/stackage-build8/serialport-0.4.7$ dist/build/Tests/Tests
Tests: user error (Pattern match failure in do expression at tests/Tests.hs:105:3-27)
Originally reported at fpco/stackage#1299 by @DanBurton.