Closer to a clean install of cro...

[cschwenz]

Okay, so after removing everything and starting from building and installing Rakudo Perl 6, followed by zef --verbose install IO::Socket::Async::SSL WebSocket Digest::SHA1::Native Crypt::Random IO::Path::ChildSecure HTTP::HPACK , I was able to get to this point (previously Cro::HTTP was failing):

% zef install cro                                                                                                          (master|✔)
===> Searching for: cro
===> Searching for missing dependencies: Cro::WebSocket
===> Searching for missing dependencies: Cro::HTTP
===> Searching for missing dependencies: Cro::Core, Cro::TLS
===> Testing: Cro::Core:ver<0.7>
===> Testing [OK] for Cro::Core:ver<0.7>
===> Testing: Cro::TLS:ver<0.7>
===> Testing [OK] for Cro::TLS:ver<0.7>
===> Testing: Cro::HTTP:ver<0.7>
===> Testing [OK] for Cro::HTTP:ver<0.7>
===> Testing: Cro::WebSocket:ver<0.7>
===> Testing [OK] for Cro::WebSocket:ver<0.7>
===> Testing: cro:ver<0.7>
WARNING: unhandled Failure detected in DESTROY. If you meant to ignore it, you can mark it as handled by calling .Bool, .so, .not, or .defined methods. The Failure was:
No such symbol 'Cro::Tools::LinkTemplate::HTTPS'
  in sub get-available-templates at /Users/cal/.zef/store/cro.git/aed600e44c27c58ddf16f2b4a6f8e1f7e95c9f6e/lib/Cro/Tools/TemplateLocator.pm6 (Cro::Tools::TemplateLocator) line 33
  in sub print-endpoint at /Users/cal/.zef/store/cro.git/aed600e44c27c58ddf16f2b4a6f8e1f7e95c9f6e/lib/Cro/Tools/Link/Editor.pm6 (Cro::Tools::Link::Editor) line 87
  in sub add-link at /Users/cal/.zef/store/cro.git/aed600e44c27c58ddf16f2b4a6f8e1f7e95c9f6e/lib/Cro/Tools/Link/Editor.pm6 (Cro::Tools::Link::Editor) line 65
  in block <unit> at t/tools-link-editor.t line 10

# Check service up attempt 1: connection refused
# Check service up attempt 2: connection refused
# Check service up attempt 3: connection refused
# Check service up attempt 4: connection refused
# Check service up attempt 5: connection refused
# Check service up attempt 6: connection refused
# Check service up attempt 7: connection refused
# Check service up attempt 8: connection refused
# Check service up attempt 9: connection refused
# Check service up attempt 10: connection refused
# Check service up attempt 11: connection refused
# Check service up attempt 12: connection refused
# Check service up attempt 13: connection refused
# Check service up attempt 14: connection refused
# Check service up attempt 15: connection refused
# Check service up attempt 16: connection refused
# Check service up attempt 17: connection refused
# Check service up attempt 18: connection refused
# Check service up attempt 19: connection refused
# Check service up attempt 20: connection refused
# Failed test 'Could call the started service'
# at t/tools-runner.t line 62
# Failed test 'Got expected resposne from service'
# at t/tools-runner.t line 63
# expected: 'Service 1 OK'
#      got: (Any)
# Failed test 'Was not on STDERR'
# at t/tools-runner.t line 67
# Failed test 'Got log line mentioning status code'
# at t/tools-runner.t line 68
# Check service up attempt 1: connection refused
# Check service up attempt 2: connection refused
# Check service up attempt 3: connection refused
# Check service up attempt 4: connection refused
# Check service up attempt 5: connection refused
# Check service up attempt 6: connection refused
# Check service up attempt 7: connection refused
# Check service up attempt 8: connection refused
# Check service up attempt 9: connection refused
# Check service up attempt 10: connection refused
# Check service up attempt 11: connection refused
# Check service up attempt 12: connection refused
# Check service up attempt 13: connection refused
# Check service up attempt 14: connection refused
# Check service up attempt 15: connection refused
# Check service up attempt 16: connection refused
# Check service up attempt 17: connection refused
# Check service up attempt 18: connection refused
# Check service up attempt 19: connection refused
# Check service up attempt 20: connection refused
# Failed test 'Could call the restarted service'
# at t/tools-runner.t line 79
# Failed test 'Got response indicating new service running'
# at t/tools-runner.t line 80
# expected: 'Service 1 UPDATED'
#      got: (Any)
# Failed test 'Was not on STDERR'
# at t/tools-runner.t line 84
# Failed test 'Got log line mentioning status code'
# at t/tools-runner.t line 85
# Looks like you failed 8 tests of 20
# Failed test 'First service has correct path'
# at t/tools-services.t line 27
# expected: '/var/folders/wr/pz8bs3nx2c515m09t5j4f_xr0000gn/T//cro-test-1737632532897610565445853975597039156628/nested/service2'
#      got: '/var/folders/wr/pz8bs3nx2c515m09t5j4f_xr0000gn/T/cro-test-1737632532897610565445853975597039156628/nested/service2'
# Failed test 'Second service has correct path'
# at t/tools-services.t line 32
# expected: '/var/folders/wr/pz8bs3nx2c515m09t5j4f_xr0000gn/T//cro-test-1737632532897610565445853975597039156628/service1'
#      got: '/var/folders/wr/pz8bs3nx2c515m09t5j4f_xr0000gn/T/cro-test-1737632532897610565445853975597039156628/service1'
# Failed test 'Third service has correct path'
# at t/tools-services.t line 47
# expected: '/var/folders/wr/pz8bs3nx2c515m09t5j4f_xr0000gn/T//cro-test-1737632532897610565445853975597039156628/service3'
#      got: '/var/folders/wr/pz8bs3nx2c515m09t5j4f_xr0000gn/T/cro-test-1737632532897610565445853975597039156628/service3'
# Failed test 'Got notified of changed service source file'
# at t/tools-services.t line 69
# expected: '/var/folders/wr/pz8bs3nx2c515m09t5j4f_xr0000gn/T//cro-test-1737632532897610565445853975597039156628/nested/service2/lib/Foo.pm6'
#      got: '/var/folders/wr/pz8bs3nx2c515m09t5j4f_xr0000gn/T/cro-test-1737632532897610565445853975597039156628/nested/service2/lib/Foo.pm6'
# Looks like you failed 4 tests of 25
===> Testing [FAIL]: cro:ver<0.7>
Aborting due to test failure: cro:ver<0.7> (use --force-test to override)
  in code  at /Users/cal/local/share/perl6/site/sources/29769DA546CA5B55E3D2F7F8C9D20095C41CCF61 (Zef::Client) line 375
  in method test at /Users/cal/local/share/perl6/site/sources/29769DA546CA5B55E3D2F7F8C9D20095C41CCF61 (Zef::Client) line 353
  in code  at /Users/cal/local/share/perl6/site/sources/29769DA546CA5B55E3D2F7F8C9D20095C41CCF61 (Zef::Client) line 530
  in sub  at /Users/cal/local/share/perl6/site/sources/29769DA546CA5B55E3D2F7F8C9D20095C41CCF61 (Zef::Client) line 527
  in method install at /Users/cal/local/share/perl6/site/sources/29769DA546CA5B55E3D2F7F8C9D20095C41CCF61 (Zef::Client) line 633
  in sub MAIN at /Users/cal/local/share/perl6/site/sources/3A2818F8A8CE2F1251F051B779AA0EC17DA2F72E (Zef::CLI) line 152
  in block <unit> at /Users/cal/local/share/perl6/site/resources/91C74F08994E0006C3049614EF974F6E1A8EDF2D line 1
  in sub MAIN at /Users/cal/local/share/perl6/site/bin/zef line 2
  in block <unit> at /Users/cal/local/share/perl6/site/bin/zef line 2

perl6 version:

% perl6 -v                                                                                                                 (master|✔)
This is Rakudo version 2017.09-353-g1ea3297b2 built on MoarVM version 2017.09.1-575-gd4e230a6
implementing Perl 6.c.

[jnthn]

I wonder if it's just some really slow precompilation of...something, but I'd expect all the deps to be installed from Cro::HTTP, which is what would make it particularly slow. If you've a local checkout of this repo, you could try running that test file manually, and then tweaking the retry count up to 50 or so just in case it is that.