ICE compiling docopt v1.1.0 with rustc f509b26a7 2020-03-18 with sanitizer=address

[spacejam]

I will fill out more info if I have time, but at the moment I do not, and I'd prefer not to lose track of this.

Compiling docopt v1.1.0
thread 'rustc' panicked at 'called Option::unwrap() on a None value', src/librustc/hir/mod.rs:81:37
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.44.0-nightly (f509b26 2020-03-18) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z sanitizer=address -C debuginfo=2 --crate-type lib

note: some of the compiler flags provided by cargo are hidden

error: could not compile docopt.

[jonas-schievink]

duplicate of #70041