Just a wild guess: NFS (with additional complication: BSD, clang, ARM)

PERL_DL_NONLAZY=1 "/mnt/nas/home/pi2b/njh/perl5/perlbrew/perls/perl-5.24.4/bin/perl"...

Who knows where /var/tmp/ was mounted?

Perhaps, it would be a good addition to CPAN::Reporter to also list the FS-type of the relevant directories mounted?

IFF this is an NFS/BSD issue, there's not much you could or should (if your module doesn't do the flock;2;freebsd()) do. Perhaps, you can add 

use warnings FATAL => 'flock';

[download]
to your tests as described here: https://metacpan.org/pod/Path::Tiny#File-locking?

Edited: Misleading citation removed / still visible in HTML source.

In reply to Re: CPAN module failing tests by Perlbotics
in thread CPAN module failing tests by nysus

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