(please correct me if I am wrong on this)

i believe the issue that was being brought up was not this specific breakage, but the fact that if it breaks even somewhat constantly, it will be an additional(potentially unwanted) burden on the rust team to deal with its breakage, even if that is just alerting the redox team to said issue. I would agree with Charles that it may be prudent to let it break and deal with it later as relibc reduces its usage of nightly features.

Your fixes are, i'd like to think at least, appreciated, but the issue is ongoing maintainance rather than a single specific incident

Rust 1.95 removes support on stable for passing a custom target specification to rustc.