cpan[2]> look Math::Prime::Util
Running look for module 'Math::Prime::Util'

Trying to open a subshell in the build directory...
Working directory is /home/dcollins/.cpan/build/Math-Prime-Util-0.58-X5FWGY
dcollins@nightshade64:~/.cpan/build/Math-Prime-Util-0.58-X5FWGY$ make test
PERL_DL_NONLAZY=1 "/usr/bin/perl5.25.0" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/01-load.t .................. ok
t/011-load-ntheory.t ......... ok
t/02-can.t ................... ok
t/022-can-ntheory.t .......... ok
t/03-init.t .................. 1/15 # Using XS.
t/03-init.t .................. ok
t/04-inputvalidation.t ....... ok
t/10-isprime.t ............... ok
t/11-clusters.t .............. ok
t/11-primes.t ................ 1/124 Negative repeat count does nothing at /home/dcollins/.cpan/build/Math-Prime-Util-0.58-X5FWGY/blib/lib/Math/Prime/Util/PP.pm line 413.
Negative repeat count does nothing at /home/dcollins/.cpan/build/Math-Prime-Util-0.58-X5FWGY/blib/lib/Math/Prime/Util/PP.pm line 413.

#   Failed test 'primes(inf,inf)'
#   at t/11-primes.t line 40.
# Looks like you failed 1 test of 124.
t/11-primes.t ................ Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/124 subtests
t/11-ramanujanprimes.t ....... ok
t/11-sumprimes.t ............. ok
t/11-twinprimes.t ............ ok
t/12-nextprime.t ............. ok
t/13-primecount.t ............ ok
t/14-nthprime.t .............. ok
t/15-probprime.t ............. ok
t/16-randomprime.t ........... ok
t/17-pseudoprime.t ........... ok
t/18-functions.t ............. ok
t/19-moebius.t ............... ok
t/20-primorial.t ............. ok
t/21-conseq-lcm.t ............ ok
t/22-aks-prime.t ............. ok
t/23-primality-proofs.t ...... ok
t/23-random-certs.t .......... ok
t/24-partitions.t ............ ok
t/25-lucas_sequences.t ....... ok
t/26-combinatorial.t ......... ok
t/26-digits.t ................ ok
t/26-mod.t ................... ok
t/26-vec.t ................... ok
t/27-bernfrac.t .............. ok
t/28-pi.t .................... 1/4
#   Failed test 'Pi(0) gives floating point pi'
#   at t/28-pi.t line 22.
#          got: '3.14159265358979323851280895940619'
#     expected: '3.1415926535897932384626433832795'

#   Failed test 'Pi(2 .. 50)'
#   at t/28-pi.t line 25.
#     Structures begin differing at:
#          $got->[0] = '3.10000000000000008881784197001252'
#     $expected->[0] = '3.1'
# Looks like you failed 2 tests of 4.
t/28-pi.t .................... Dubious, test returned 2 (wstat 512, 0x200)
Failed 2/4 subtests
t/29-mersenne.t .............. ok
t/30-relations.t ............. ok
t/31-threading.t ............. 3/10 Thread 14 terminated abnormally: panic: free from wrong pool, 17c7010!=2deff20 at t/31-threading.t line 82.