==> Creating clean working copy [build]...done
==> Making package: ruby1.9-libv8 3.16.14.3-4 (Tue Jan  5 09:09:11 EST 2016)
==> Retrieving sources...
  -> Found libv8-3.16.14.3.gem
==> Validating source files with sha512sums...
    libv8-3.16.14.3.gem ... Passed
resolving dependencies...
looking for conflicting packages...

Packages (5) lib32-glibc-2.22-3.1  libyaml-0.1.6-1  lib32-gcc-libs-5.3.0-3  python2-2.7.11-1  ruby1.9-1.9.3_p551-1

Total Download Size:    15.52 MiB
Total Installed Size:  142.52 MiB

:: Proceed with installation? [Y/n] 
:: Retrieving packages ...
downloading lib32-glibc-2.22-3.1-x86_64.pkg.tar.xz...
downloading lib32-gcc-libs-5.3.0-3-x86_64.pkg.tar.xz...
downloading ruby1.9-1.9.3_p551-1-x86_64.pkg.tar.xz...
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
checking available disk space...
installing libyaml...
installing ruby1.9...
Optional dependencies for ruby1.9
    tk: for Ruby/TK
installing python2...
Optional dependencies for python2
    tk: for IDLE
    python2-setuptools
    python2-pip
installing lib32-glibc...
installing lib32-gcc-libs...
Building native extensions.  This could take a while...
checking dependencies...
:: glib2 optionally requires python2: for gdbus-codegen and gtester-report

Packages (5) lib32-gcc-libs-5.3.0-3  lib32-glibc-2.22-3.1  libyaml-0.1.6-1  python2-2.7.11-1  ruby1.9-1.9.3_p551-1

Total Removed Size:  142.52 MiB

:: Do you want to remove these packages? [Y/n] 
removing ruby1.9...
removing python2...
removing libyaml...
removing lib32-gcc-libs...
removing lib32-glibc...

==> ERROR: Build failed, check /chroot/x86_64/build/build