Mark ab/6881855 as merged am: 5e312b963c am: 78c5058bfe

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/rust/crates/codespan-reporting/+/13112876

Change-Id: I0e2dd78b6b97eb4a9dd00f2942a20c981d353bb7