Cannot build Rust 1.71.1 with 1.71.0

[heftig]

Apparently Rust 1.71.0 added a check that only allows it to be built with the exact same version of Rust, or a Rust that's one minor release older.

However, this also makes it impossible to build Rust 1.71.1 with a Rust that's one micro release older (1.71.0).

Unexpected rustc version: 1.71.0, we should use 1.70.x/1.71.1 to build source with 1.71.1

Is this really what was wanted? It makes it quite hard for us (Arch Linux) to build micro upgrades.

[Mark-Simulacrum]

No, this isn't intended. We should permit building with the previous release for point releases (minor and patch).

[ehuss]

#114440 is open to fix this.

[kaniini]

#114440 has been merged I guess this can be closed?

[bjorn3]

Nominated your PR for beta backporting in case 1.72 gets a patch release too.

[Mark-Simulacrum]

1.72 is still in beta, so this'll get backported to that before the release.

[cuviper]

#114440 was backported in #114748.