@bugaevc I’m old enough to have seen the rise and fall of GCJ (Java in GCC), in which Red Hat invested a large number of person-years (and not random persons I should say!).
I wonder if GCC-Rust will have the same fate, which I interpret as failure due to social issues. Rust has developed an anti-copyleft, anti-GNU, arrogant culture (how would one qualify the “RIIR” slogan? the claim on “memory safety”?). That might be enough for GCC-Rust to remain a niche.