I'm currently looking at a backtrace, and the critical line is of course
13: std::panicking::begin_panic at /home/pfaria/projects/rust/src/libstd/panicking.rs:402 14: rustc::ty::<impl rustc::ty::context::TyCtxt>::instance_mir at src/librustc/ty/mod.rs:0 15: rustc_mir::monomorphize::collector::collect_neighbours at src/librustc_mir/monomorphize/collector.rs:1254
What causes that, and is there a config I can change to get the line number?
I've seen this a few times recently... I think @nnethercote filed an issue about it, but not confident
IIRC eddyb is looking into it somewhat
I filed https://github.com/rust-lang/rust/issues/65487 recently, may be related