==> Creating clean working copy [build]...done
==> Making package: ruby-em-synchrony 1.0.3-3 (Sun Nov  8 23:33:47 EST 2015)
==> Retrieving sources...
  -> Found em-synchrony-1.0.3.gem
  -> Found LICENSE
==> Validating source files with sha512sums...
    em-synchrony-1.0.3.gem ... Passed
    LICENSE ... Passed
==> Making package: ruby-em-synchrony 1.0.3-3 (Sun Nov  8 23:33:47 EST 2015)
==> Checking runtime dependencies...
==> Installing missing dependencies...
error: target not found: ruby-eventmachine
==> ERROR: 'pacman' failed to install missing dependencies.
==> WARNING: Failed to remove installed dependencies.
==> ERROR: Build failed, check /chroot/armv7/build/build