proc_macro::__internal::with_parse_sess() called before set_parse_sess() · Issue #39870 · rust-lang/rust

serde-rs/serde#764 and jwilm/alacritty#413 both have this assertion failing. Is this a bug in rustc or in our use of libproc_macro? pub fn with_parse_sess<F, R>(f: F) -> R where F: FnOnce(&Pars...</f,>