ocaml/opam-repository — pull request #2997 by avsm (2014-11-02 22:55:26+00:00)
Title: Restrict core_kernel.112.01.00 to x86_64 only

It fails builds on arch = i686 and armv7l (and presumably all other
32-bit ARM variants), so the restriction to x86_64 is easier than
finding all the 32-bit variants.

See ocaml/opam-repository#2764 for discussion