Fix bug where rustc_lint would not apply renamed tool lints

Author: jyn514

compiler/rustc_lint/src/levels.rs

@@ -464,15 +464,16 @@ impl<'s> LintLevelsBuilder<'s> {
                 // we don't warn about the name change.
                 if let CheckLintNameResult::Warning(_, Some(new_name)) = lint_result {
                     // Ignore any errors or warnings that happen because the new name is inaccurate
-                    if let CheckLintNameResult::Ok(ids) =
-                        store.check_lint_name(&new_name, tool_name)
-                    {
+                    // NOTE: `new_name` already includes the tool name, so we don't have to add it again.
+                    if let CheckLintNameResult::Ok(ids) = store.check_lint_name(&new_name, None) {
                         let src =
                             LintLevelSource::Node(Symbol::intern(&new_name), li.span(), reason);
                         for &id in ids {
                             self.check_gated_lint(id, attr.span);
                             self.insert_spec(&mut specs, id, (level, src));
                         }
+                    } else {
+                        panic!("renamed lint does not exist: {}", new_name);
                     }
                 }
             }

src/test/rustdoc-ui/renamed-lint-still-applies.rs

@@ -4,3 +4,8 @@
 // stable channel.
 //! [x]
 //~^ ERROR unresolved link
+
+#![deny(rustdoc::non_autolinks)]
+//~^ WARNING renamed to `rustdoc::bare_urls`
+//! http://example.com
+//~^ ERROR not a hyperlink

src/test/rustdoc-ui/renamed-lint-still-applies.stderr

@@ -1,3 +1,11 @@
+warning: lint `rustdoc::non_autolinks` has been renamed to `rustdoc::bare_urls`
+  --> $DIR/renamed-lint-still-applies.rs:8:9
+   |
+LL | #![deny(rustdoc::non_autolinks)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `rustdoc::bare_urls`
+   |
+   = note: `#[warn(renamed_and_removed_lints)]` on by default
+
 error: unresolved link to `x`
   --> $DIR/renamed-lint-still-applies.rs:5:6
    |
@@ -12,5 +20,17 @@ LL | #![deny(broken_intra_doc_links)]
    = note: `#[deny(rustdoc::broken_intra_doc_links)]` implied by `#[deny(broken_intra_doc_links)]`
    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
 
-error: aborting due to previous error
+error: this URL is not a hyperlink
+  --> $DIR/renamed-lint-still-applies.rs:10:5
+   |
+LL | //! http://example.com
+   |     ^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<http://example.com>`
+   |
+note: the lint level is defined here
+  --> $DIR/renamed-lint-still-applies.rs:8:9
+   |
+LL | #![deny(rustdoc::non_autolinks)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 2 previous errors; 1 warning emitted