==> Downloading firefox-extension-shumway PKGBUILD from AUR...
x PKGBUILD
firefox-extension-shumway 20130816-1  (Mon Mar 18 21:50:58 GMT 2013)
( Unsupported package: Potentially dangerous ! )
==> Edit PKGBUILD ? [Y/n] ("A" to abort)
==> ------------------------------------
n

==> firefox-extension-shumway dependencies:
 - firefox>=18 (already installed)
 - firefox<25.0 (already installed)


==> Continue building firefox-extension-shumway ? [Y/n]
==> ---------------------------------------------------
==>
==> Building and installing package
==> Making package: firefox-extension-shumway 20130816-1 (Wed Oct 16 19:56:14 IST 2013)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Downloading shumway.xpi...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   178  100   178    0     0     31      0  0:00:05  0:00:05 --:--:--    42
100  593k  100  593k    0     0  79634      0  0:00:07  0:00:07 --:--:--  724k
==> Validating source files with md5sums...
    shumway.xpi ... FAILED
==> ERROR: One or more files did not pass the validity check!
==> ERROR: Makepkg was unable to build firefox-extension-shumway.
==> Restart building firefox-extension-shumway ? [y/N]
==> --------------------------------------------------
==>