# File lib/chef/provider/package/yum.rb, line 927
        def yum_command(command)
          status, stdout, stderr = output_of_command(command, {})

          # This is fun: rpm can encounter errors in the %post/%postun scripts which aren't
          # considered fatal - meaning the rpm is still successfully installed. These issue
          # cause yum to emit a non fatal warning but still exit(1). As there's currently no
          # way to suppress this behavior and an exit(1) will break a Chef run we make an
          # effort to trap these and re-run the same install command - it will either fail a
          # second time or succeed.
          #
          # A cleaner solution would have to be done in python and better hook into
          # yum/rpm to handle exceptions as we see fit.
          if status.exitstatus == 1
            stdout.each_line do |l|
              # rpm-4.4.2.3 lib/psm.c line 2182
              if l =~ %r{^error: %(post|postun)\(.*\) scriptlet failed, exit status \d+$}
                Chef::Log.warn("#{@new_resource} caught non-fatal scriptlet issue: \"#{l}\". Can't trust yum exit status " +
                               "so running install again to verify.")
                status, stdout, stderr = output_of_command(command, {})
                break
              end
            end
          end

          if status.exitstatus > 0
            command_output = "STDOUT: #{stdout}"
            command_output << "STDERR: #{stderr}"
            handle_command_failures(status, command_output, {})
          end
        end