Does lang/rust build with the new bootstraps?
amd64, i386: yes, tested by @tobik
aarch64: untested, only smoke tested by compiling devel/tokei with bootstrap on Raspberry Pi 3
armv7: yes, tested by @mikael.urankar_gmail.com (thanks!)
powerpc64 elfv1: yes. tested on ref12-ppc64 by @tobik, also tested by @pkubaj
powerpc64 elfv2: yes, tested by @pkubaj (thanks!)