fixup! fixup! fixup! fixup! feat(config)!: remove implicit installation from resolve_local_toolchain()

Author: rami3l

tests/suite/cli_rustup.rs

@@ -2810,7 +2810,7 @@ async fn warn_on_duplicate_rust_toolchain_file() {
 
     cx.config
         .expect_stderr_ok(
-            &["rustc", "--version"],
+            &["rustup", "toolchain", "install"],
             &format!(
                 "warn: both `{0}` and `{1}` exist. Using `{0}`",
                 toolchain_file_1.canonicalize().unwrap().display(),