Rollup merge of rust-lang#114440 - kaniini:fix/bootstrap-version-compare, r=ozkanonur

bootstrap: config: fix version comparison bug

Rust requires a previous version of Rust to build, such as the current version, or the previous version.  However, the version comparison logic did not take patch releases into consideration when doing the version comparison for the current branch, e.g. Rust 1.71.1 could not be built by Rust 1.71.0 because it is neither an exact version match, or the previous version.

Adjust the version comparison logic to tolerate mismatches in the patch version.

Author: matthiaskrgr

src/bootstrap/config.rs

@@ -2004,7 +2004,8 @@ impl Config {
                 .unwrap();
         if !(source_version == rustc_version
             || (source_version.major == rustc_version.major
-                && source_version.minor == rustc_version.minor + 1))
+                && (source_version.minor == rustc_version.minor
+                    || source_version.minor == rustc_version.minor + 1)))
         {
             let prev_version = format!("{}.{}.x", source_version.major, source_version.minor - 1);
             eprintln!(