bug#23103: A number of corrupt packages on Hydra?

[Christopher Allan Webber]

For at least boost and hydra I'm getting errors like the following:

  From http://hydra.gnunet.org/nar/jaf2s3paa3fswfpzi6amlqjxd3fwiw9x-ruby-2.3.0
  Downloading jaf2s3...-ruby-2.3.0 (41.9MiB installed)...
   http://hydra.gnunet.org/nar/jaf2s3paa3fswfpzi6amlqjxd3fwiw9x-ruby-2.3.0 
2.0MiB/s 00:02 | 3.4MiB transferredd
  bzip2: Compressed file ends unexpectedly;
        perhaps it is corrupted?  *Possible* reason follows.
  bzip2: Inappropriate ioctl for device
        Input file = (stdin), output file = (stdout)
  
  It is possible that the compressed file(s) have become corrupted.
  You can use the -tvv option to test integrity of such files.
  
  You can use the `bzip2recover' program to attempt to recover
  data from undamaged sections of corrupted files.
  
  guix substitute: error: corrupt input while restoring 
'/gnu/store/jaf2s3paa3fswfpzi6amlqjxd3fwiw9x-ruby-2.3.0/lib/ruby/2.3.0/rdoc/generator/template/darkfish/fonts/SourceCodePro-Regular.ttf'
 from #{read pipe}#
  killing process 8510
  guix package: error: build failed: some substitutes for the outputs of 
derivation `/gnu/store/l7ffwqbkrvd4vk3h51p597psyl44gv67-ruby-2.3.0.drv' failed 
(usually happens due to networking issues); try `--fallback' to build 
derivation from source