:: Synchronizing package databases...
 staging is up to date
 testing is up to date
 core is up to date
 extra is up to date
 community-staging is up to date
 community-testing is up to date
 community is up to date
:: Starting full system upgrade...
 there is nothing to do
==> Building in chroot for [staging] (x86_64)...
==> Synchronizing chroot copy [/var/lib/archbuild/staging-x86_64/root] -> [/var/lib/archbuild/staging-x86_64/erich]...done
==> Making package: povray 1:3.7-15 (Mon Jul 10 16:37:37 CEST 2017)
==> Retrieving sources...
  -> Found povray-3.7.zip
  -> Found povray3.7.0_rc3-user-conf.patch
==> Validating source files with sha256sums...
    povray-3.7.zip ... FAILED
    povray3.7.0_rc3-user-conf.patch ... Passed
==> ERROR: One or more files did not pass the validity check!
==> ERROR: Could not download sources.