Created attachment 563248 [details] emerge --info rust-1.32.0 fails to build. See the attached. I saw that https://bugs.gentoo.org/676278 was also a build failure with rust-1.32.0 but the error looks different.
Created attachment 563250 [details] emerge -pqv
Created attachment 563252 [details] build.log
*** Bug 677036 has been marked as a duplicate of this bug. ***
I pushed fix today in bug 676278, please try again, it should work. and clean stale headers from the system, read explanation in bug 676278 for details *** This bug has been marked as a duplicate of bug 676278 ***