[nongnu] elpa/rust-mode updated (5f654a5867 -> af4aa18a9b)

[ELPA Syncer]

elpasync pushed a change to branch elpa/rust-mode.

      from  5f654a5867 Merge pull request #445 from jcs-PR/ci
       new  1d4b327b39 Pass process-environment and exec-path through 
with-temp-buffer
       new  332a23285a Add some comments documenting the change
       new  af4aa18a9b Merge pull request #447 from glasserc/support-envrc


Summary of changes:
 rust-cargo.el | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)