Some tests involving futures-rs

Mahmoud Al-Qudsi 33c4986398 Update output with rustc 1.51.0-nightly (202720bf4 2021-01-21)		2021-02-12 19:41:13 -06:00
src	Include multiple cases generating correct return code	2017-12-09 13:13:51 -06:00
.gitignore	Backwards type propagation leads to cryptic errors	2017-12-09 12:50:50 -06:00
Cargo.lock	Update output with rustc 1.51.0-nightly (202720bf4 2021-01-21)	2021-02-12 19:41:13 -06:00
Cargo.toml	Backwards type propagation leads to cryptic errors	2017-12-09 12:50:50 -06:00
Makefile	Always generate cargo.out, even on successful build	2021-02-12 19:40:56 -06:00
cargo.out	Update output with rustc 1.51.0-nightly (202720bf4 2021-01-21)	2021-02-12 19:41:13 -06:00