{"ast_node_type":"other","tokens":[{"end":9,"kind":"keyword","start":0,"text":"}\"##,"}]}
    }"##,
    "rendered": "warning: unused variable: `foo`\n   --> driver/subcommand/repl.rs:291:9\n    |\n291 |     let foo = 42;\n    |         ^^^ help: consider prefixing with an underscore: `_foo`\n    |\n    = note: #[warn(unused_variables)] on by default\n\n"
            expect_file!["./test_data/rustc_unused_variable.txt"],