Revert "Merge #2027 #2057" #2117
Merged
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This reverts commit 0c3afc2.
This rolls back the version of bitflags used to 1.1. Upgrading bitflags to 2.0 inadvertently caused breaking changes in the r0.26 branch, by virtue of the methods that the bitflags! macro adds.
Also, mask the bad_bit_mask lint, triggered by bitflags's generated code. That lint was the motivation for upgrading bitflags in the first place. The bitflags maintainers have decided not to fix those warnings in the 1.x release series.
bitflags/bitflags#373
Fixes #2112