TEST_MAPPING: test dependers of this crate am: 0f98ba608f am: ff1951bdc9 am: a3d9a81b01 am: d086ee6795

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/regex/+/1488773

Change-Id: I90b3f2bfa05a3ded6077174afb55395f820508b2