D7524: rust-dirs-multiset: use `AsRef` instead of concrete types when possible

[pulkit (Pulkit Goyal)]

pulkit added a comment.


  This one fails to apply on default. Skipping pushing this and it's accepted children.

REPOSITORY
  rHG Mercurial

BRANCH
  default

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D7524/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D7524

To: Alphare, #hg-reviewers, kevincox, pulkit
Cc: durin42, kevincox, mercurial-devel