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

Author: rami3l

tests/suite/cli_rustup.rs

@@ -2766,7 +2766,7 @@ async fn dont_warn_on_partial_build() {
 /// Checks that `rust-toolchain.toml` files are considered
 #[tokio::test]
 async fn rust_toolchain_toml() {
-    let cx = CliTestContext::new(Scenario::SimpleV2).await;
+    let mut cx = CliTestContext::new(Scenario::SimpleV2).await;
     cx.config
         .expect_err(
             &["rustc", "--version"],
@@ -2777,7 +2777,9 @@ async fn rust_toolchain_toml() {
     let cwd = cx.config.current_dir();
     let toolchain_file = cwd.join("rust-toolchain.toml");
     raw::write_file(&toolchain_file, "[toolchain]\nchannel = \"nightly\"").unwrap();
-
+    cx.config
+        .expect_ok(&["rustup", "toolchain", "install"])
+        .await;
     cx.config
         .expect_stdout_ok(&["rustc", "--version"], "hash-nightly-2")
         .await;