{"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"//"}]}
    // We don't want to pass things like `RUSTFLAGS`, since they contain the -Zcodegen-backend flag.
    // Then, we copy some of the env vars from `test_env`
    // That would force `cg_gcc` to *rebuild itself* and only then run tests, which is undesirable.