We are having some pythonnet build issues on Travis CI with Mono. Here is a bounty I opened on stackoverflow, if someone knows how to solve this error:<div><br></div><div><a href="https://stackoverflow.com/questions/51988395/build-failures-with-mono-5-14-0-177-msbuild-15-0-nuget-4-7-1-on-travis-ci-but">https://stackoverflow.com/questions/51988395/build-failures-with-mono-5-14-0-177-msbuild-15-0-nuget-4-7-1-on-travis-ci-but</a><br></div>