cargo $1 test $release --no-default-features --features hashbrown
cargo $1 test $release --features hashbrown
# (2>/dev/null because otherwise you’ll keep seeing errors and double-guessing whether they were supposed to happen or whether the script failed to exit nonzero.)
! 2>/dev/null cargo $1 test $release --no-default-features || ! echo "'cargo $1 test $release --no-default-features' failed to fail (sorry, its stderr is suppressed, try it manually)"
cargo $1 test $release
done
}
# We’d like to test with the oldest declared-supported version of *all* our dependencies.