Minimum Mojolicious version?

[eserte]

On some of my smokers the test suite fails like this:

PERL_DL_NONLAZY=1 "/opt/perl-5.28.0/bin/perl" "-MExtUtils::Command::MM" "-MTest::Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
String found where operator expected at /home/cpansand/.cpan/build/2019121018/Mojo-File-Role-Digest-0.02-1/blib/lib/Mojo/File/Role/Digest.pm line 6, near "requires 'open'"
	(Do you need to predeclare requires?)

#   Failed test 'use Mojo::File::Role::Digest'
#   at t/00-basic.t line 35.
# syntax error at /home/cpansand/.cpan/build/2019121018/Mojo-File-Role-Digest-0.02-1/blib/lib/Mojo/File/Role/Digest.pm line 6, near "requires 'open'"
# BEGIN not safe after errors--compilation aborted at /home/cpansand/.cpan/build/2019121018/Mojo-File-Role-Digest-0.02-1/blib/lib/Mojo/File/Role/Digest.pm line 8.
# Compilation failed in require at (eval 16) line 1.
# BEGIN failed--compilation aborted at (eval 16) line 1.

#   Failed test 'Pod coverage on Mojo::File::Role::Digest'
#   at t/00-basic.t line 37.
# Mojo::File::Role::Digest: requiring 'Mojo::File::Role::Digest' failed
# Looks like you failed 2 tests of 7.
t/00-basic.t .. 
Dubious, test returned 2 (wstat 512, 0x200)
Failed 2/7 subtests 
String found where operator expected at /home/cpansand/.cpan/build/2019121018/Mojo-File-Role-Digest-0.02-1/blib/lib/Mojo/File/Role/Digest.pm line 6, near "requires 'open'"
	(Do you need to predeclare requires?)
syntax error at /home/cpansand/.cpan/build/2019121018/Mojo-File-Role-Digest-0.02-1/blib/lib/Mojo/File/Role/Digest.pm line 6, near "requires 'open'"
BEGIN not safe after errors--compilation aborted at /home/cpansand/.cpan/build/2019121018/Mojo-File-Role-Digest-0.02-1/blib/lib/Mojo/File/Role/Digest.pm line 8.
Compilation failed in require at /home/cpansand/.cpan/build/2019121018/Role-Tiny-2.001004-1/blib/lib/Role/Tiny.pm line 52.

Statistical analysis suggests that this happens if Mojolicious is too old, so maybe the minimum prereq version should be adjusted:

****************************************************************
Regression 'mod:Mojolicious'
****************************************************************
Name           	       Theta	      StdErr	 T-stat
[0='const']    	     -0.0000	      0.0000	  -1.14
[1='eq_8.12']  	      0.0000	      0.0000	   2.79
[2='eq_8.17']  	      0.0000	      0.0000	   0.00
[3='eq_8.23']  	      1.0000	      0.0000	9380018148277760.00
[4='eq_8.26']  	      1.0000	      0.0000	9380018148277762.00
[5='eq_8.27']  	      1.0000	      0.0000	10108205955228344.00

R^2= 1.000, N= 44, K= 6
****************************************************************

[Tekki]

Thanks for the second time. Tests pass only with Mojolicious >= 8.18,