=> Bootstrap dependency digest>=20010302: found digest-20190127
===> Building for ruby26-power_assert-1.1.3
=> Removing backup files of patch before build
WARNING:  license value '2-clause BSDL' is invalid.  Use a license identifier from
http://spdx.org/licenses or 'Nonstandard' for a nonstandard license.
Did you mean '0BSD', 'Afmparse', 'BSD-2-Clause', 'BSD-2-Clause-NetBSD', 'BSD-3-Clause-LBNL', 'Naumen', 'OpenSSL', 'PostgreSQL'?
WARNING:  license value 'Ruby's' is invalid.  Use a license identifier from
http://spdx.org/licenses or 'Nonstandard' for a nonstandard license.
Did you mean 'Ruby'?
WARNING:  open-ended dependency on test-unit (>= 0, development) is not recommended
  use a bounded requirement, such as '~> x.y'
WARNING:  open-ended dependency on rake (>= 0, development) is not recommended
  use a bounded requirement, such as '~> x.y'
WARNING:  open-ended dependency on simplecov (>= 0, development) is not recommended
  use a bounded requirement, such as '~> x.y'
WARNING:  open-ended dependency on bundler (>= 0, development) is not recommended
  use a bounded requirement, such as '~> x.y'
WARNING:  open-ended dependency on pry (>= 0, development) is not recommended
  use a bounded requirement, such as '~> x.y'
WARNING:  open-ended dependency on byebug (>= 0, development) is not recommended
  use a bounded requirement, such as '~> x.y'
WARNING:  open-ended dependency on benchmark-ips (>= 0, development) is not recommended
  use a bounded requirement, such as '~> x.y'
WARNING:  See http://guides.rubygems.org/specification-reference/ for help
  Successfully built RubyGem
  Name: power_assert
  Version: 1.1.3
  File: power_assert-1.1.3.gem