==> Creating clean working copy [build]...done
==> Making package: ruby-arachni-rpc-em 0.2-3 (Mon Oct 12 22:10:44 EDT 2015)
==> Retrieving sources...
  -> Found arachni-rpc-em-0.2.gem
==> Validating source files with sha512sums...
    arachni-rpc-em-0.2.gem ... Passed
==> Making package: ruby-arachni-rpc-em 0.2-3 (Mon Oct 12 22:10:45 EDT 2015)
==> Checking runtime dependencies...
==> Installing missing dependencies...
error: target not found: ruby-eventmachine
error: target not found: ruby-em-synchrony
==> ERROR: 'pacman' failed to install missing dependencies.
==> WARNING: Failed to remove installed dependencies.
==> ERROR: Build failed, check /chroot/armv7/build/build