branch master updated (8456a4c -> f342bb5)

[Danny Milosavljevic]

dannym pushed a change to branch master
in repository guix.

      from  8456a4c   gnu: ruby-2.2: Update to 2.2.10.
       new  f342bb5   gnu: rust: Update rust to 1.24.1.

The 1 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.


Summary of changes:
 gnu/packages/rust.scm       | 1374 ++++---------------------------------------
 guix/build-system/cargo.scm |   21 +-
 2 files changed, 127 insertions(+), 1268 deletions(-)