Try to improve CPAN Testers diagnostics
Try to improve CPAN Testers diagnostics

Check whether 'use Clownfish::Test' succeeds directly after build.
If this fails, it is probably caused by a failure to find symbols from
Clownfish.so, indicating a build problem. In this case, make the build
fail, so we get the full build log on CPAN Testers.

nwellnhof/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish,apache/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish,nwellnhof/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish