Split the safety runs between requirements file for installation and minimum-constraints file for development. The safety run for installation must succeed, while the safety run for development shows its issues, but is allowed to fail.
coverage: 37.029%. remained the same
when pulling 917d4afee470246b8fe17c05a1194c1e394d5819 on anil/make-safety
into 896514feee3d87509718d03b104bec34e60c6f70 on master.