Rollup merge of #53452 - tromey:lldb-manifest-fix, r=alexcrichton

Change target triple used to check for lldb in build-manifest

The wrong target triple was used for lldb in build-manifest.  lldb is
only built for macOS, so update the triple to reflect that.

This is an attempt to fix bug#48168.

src/tools/build-manifest/src/main.rs

@@ -273,7 +273,8 @@ fn build(&mut self) {
         self.clippy_version = self.version("clippy", "x86_64-unknown-linux-gnu");
         self.rustfmt_version = self.version("rustfmt", "x86_64-unknown-linux-gnu");
         self.llvm_tools_version = self.version("llvm-tools", "x86_64-unknown-linux-gnu");
-        self.lldb_version = self.version("lldb", "x86_64-unknown-linux-gnu");
+        // lldb is only built for macOS.
+        self.lldb_version = self.version("lldb", "x86_64-apple-darwin");
 
         self.rust_git_commit_hash = self.git_commit_hash("rust", "x86_64-unknown-linux-gnu");
         self.cargo_git_commit_hash = self.git_commit_hash("cargo", "x86_64-unknown-linux-gnu");