------------------------------ TESTER COMMENTS ------------------------------ Additional comments from tester: I'm following up a question on PerlMonks: "help installing Devel::NYTProf under Cygwin" (https://www.perlmonks.org/?node_id=11135967). The error I have below is identical to the one posted on PerlMonks. The "CPAN Testers Matrix: Devel-NYTProf 6.10 (latest distribution)" (http://matrix.cpantesters.org/?dist=Devel-NYTProf+6.10) only has one report for Cygwin (https://www.cpantesters.org/cpan/report/a4dfd892-7306-1014-8def-c9dd75d8a230) which is an identical FAIL. I see from https://github.com/timbunce/devel-nytprof/blob/master/t/50-errno.t that the problem line is in a SKIP block: skip ... if($^O eq 'VMS'); Unless that test is essential for Cygwin, perhaps consider: skip ... if($^O eq 'VMS' or $^O eq 'cygwin'); #### Failed 1/55 test programs. 1/4949 subtests failed. #### cpan[2]> force install Devel::NYTProf ... JKEENAN/Devel-NYTProf-6.10.tar.gz /usr/bin/make install -- OK