There was a minor bug whth IsPosixErrorOkAndHoldsMatcher where it wouldn't display the actual value contained. This fixes that and adds a few other minor improvements. PiperOrigin-RevId: 235809065 Change-Id: I487e5072e9569eb06104522963e9a1b34204daaf
PiperOrigin-RevId: 224886231 Change-Id: I0fccb4d994601739d8b16b1d4e6b31f40297fb22