Right now nushell seems to require Rust nightly. But this hampers adoption, for example linux distros can't include it this way. It would be great if eventually, nushell would work on Rust stable.

futures-async-stream unrelated nightly features:

• Remove some redundant/unused feature gates #367
• type_name Replace type_name intrinsic by stable type_name #371
• option_flattening Replace use of unstable Option::flatten() with and_then() #468
• try_trait Remove try_trait feature use #520
• crate_visibility_modifier Replace crate visibility identifier with pub(crate) #526 , Support non-identifier visibility like pub(crate) jbaublitz/getset#28 , Get rid of feature(crate_visibility_modifier) (see #362) #561
• bind_by_move_pattern_guards Remove bind_by_move_pattern_guards nightly feature #521
• specialization Remove unused functions that use specialization #531, Remove use of ExtractType in deserialize_any #569 , Use serde instead of specialization #579
• in_band_lifetimes Remove usage of in_band_lifetimes feature #527
• https://github.com/wycats/language-reporting Adopt stable Rust wycats/language-reporting#7

futures-async-stream related nightly features:

• proc_macro_hygiene Remove uses of nightly Rust, switch compiler to beta #724
• generators Remove uses of nightly Rust, switch compiler to beta #724
• https://github.com/taiki-e/futures-async-stream Remove uses of nightly Rust, switch compiler to beta #724