syntax_data: {"ast_node_type":"variable","tokens":[{"end":87,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let mut rustlib_path = rustc_target::relative_target_rustlib_path(&p, "dummy");
context_before:         // Look for the target rustlib directory in the suspected sysroot.
context_after:         rustlib_path.pop(); // pop off the dummy target.