===> Building for ruby32-metasploit_payloads-mettle-1.0.42
=> Removing backup files of patch before build
WARNING:  license value '3-clause (or "modified") BSD' is invalid.  Use a license identifier from
http://spdx.org/licenses or 'Nonstandard' for a nonstandard license.
Did you mean 'BSD-3-Clause-Modification'?
WARNING:  open-ended dependency on bundler (>= 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 gem-release (>= 0, development) is not recommended
  use a bounded requirement, such as '~> x.y'
WARNING:  See https://guides.rubygems.org/specification-reference/ for help
  Successfully built RubyGem
  Name: metasploit_payloads-mettle
  Version: 1.0.42
  File: metasploit_payloads-mettle-1.0.42.gem