BoolError: update to new build macros

See https://github.com/gtk-rs/glib/pull/419
3 jobs for master in 9 minutes and 45 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Lint
passed #73301
rustfmt

00:00:16

 
  Test
passed #73303
allowed to fail
test nightly

00:09:28

passed #73302
test stable

00:09:28