perl-WWW-Mechanize-1.84-1.fc27 fails to build in F27 sometimes because a test fails randomly: t/select.t ................. ok # Failed test 'ENV taints OK' # at t/taint.t line 25. # Looks like you failed 1 test of 6. t/taint.t .................. Dubious, test returned 1 (wstat 256, 0x100) Failed 1/6 subtests The test is bad because it assumes all %ENV elements are tainted and this is not true.
I've cherry-pick-ed the patch you submitted to upstream, Petr. https://koji.fedoraproject.org/koji/buildinfo?buildID=887399