panic: Option::unwrap() on a None value #5738
Description
This is a fuzzer-generated bug, please feel free to close and/or let me know if it's not helpful!
rustfmt 1.5.2-nightly (2eaeb1e 2023-04-05) enum En4<'x1, 'x2, T: Tr1<As1: >> { V0, V1, } enum _En5<'x1, 'x2, T: Tr1<As1: >> { _V0, _V1, } enum En6 where T: Tr1<En2<S<S<S<S<S<S<S<S<S<S<S<S<S<S<S<S<S<S<S<S<S<S<S>>>>>>>>>>>>>>>>>>>>>>>>, { V0, V1, V2, V3, } enum _En7 where T: , { V0, V1, } fn _make_en7() where T: , { } enum EnSelf<T> where Self: Tr1<As1: > { V0(T), V1, V2, } impl EnSelf { } fn main() { if ::Outest("") = wrap_en1_1::<_> { }; ; ; }thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', src/tools/rustfmt/src/items.rs:439:10 stack backtrace: 0: rust_begin_unwind at /rustc/2eaeb1eee1b21772de8b935236d16ff8e03fdcf5/library/std/src/panicking.rs:577:5 1: core::panicking::panic_fmt at /rustc/2eaeb1eee1b21772de8b935236d16ff8e03fdcf5/library/core/src/panicking.rs:67:14 2: core::panicking::panic at /rustc/2eaeb1eee1b21772de8b935236d16ff8e03fdcf5/library/core/src/panicking.rs:117:5 3: <rustfmt_nightly::visitor::FmtVisitor>::visit_item 4: <rustfmt_nightly::visitor::FmtVisitor>::visit_items_with_reordering 5: <rustfmt_nightly::visitor::FmtVisitor>::walk_mod_items 6: <rustfmt_nightly::visitor::FmtVisitor>::format_separate_mod 7: rustfmt_nightly::formatting::format_project::<rustfmt_nightly::Session<std::io::stdio::Stdout>> 8: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::with::<<rustfmt_nightly::Session<std::io::stdio::Stdout>>::format_input_inner::{closure#0}, core::result::Result<rustfmt_nightly::FormatReport, rustfmt_nightly::ErrorKind>> 9: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_span::create_session_if_not_set_then<core::result::Result<rustfmt_nightly::FormatReport, rustfmt_nightly::ErrorKind>, <rustfmt_nightly::Session<std::io::stdio::Stdout>>::format_input_inner::{closure#0}>::{closure#0}, core::result::Result<rustfmt_nightly::FormatReport, rustfmt_nightly::ErrorKind>> 10: <rustfmt_nightly::Session<std::io::stdio::Stdout>>::format 11: rustfmt::format_and_emit_report::<std::io::stdio::Stdout> 12: <rustfmt_nightly::Session<std::io::stdio::Stdout>>::override_config::<rustfmt::format::{closure#0}, ()> 13: rustfmt::execute 14: rustfmt::main note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.