format-posix Switch to posix format when creating archives

Push event #448.1 passed

  • Ran for
AMD64
Ruby: 2.5
Git
language: ruby

rvm: 2.5

script: bundle exec rspec spec
Build Config
{
  "os": [
    "linux"
  ],
  "rvm": [
    "2.5"
  ],
  "script": [
    "bundle exec rspec spec"
  ],
  "language": "ruby"
}