[GH-ISSUE #7] #![feature(trait_alias)] may not be used on the stable channel #3

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opened 2026-02-17 17:12:19 -05:00 by yindo · 5 comments
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Originally created by @lockenkop on GitHub (Aug 4, 2025).
Original GitHub issue: https://github.com/Drop-OSS/drop-docs/issues/7

https://docs.droposs.org/docs/advanced/building

States rust(stable) as a dependency to build droplet.

This triggers error[E0554] during droplet build

error[E0554]: `#![feature]` may not be used on the stable release channel
 --> src/lib.rs:2:1
  |
2 | #![feature(trait_alias)]
  | ^^^^^^^^^^^^^^^^^^^^^^^^
Originally created by @lockenkop on GitHub (Aug 4, 2025). Original GitHub issue: https://github.com/Drop-OSS/drop-docs/issues/7 https://docs.droposs.org/docs/advanced/building States rust(stable) as a dependency to build droplet. This triggers error[E0554] during droplet build ``` error[E0554]: `#![feature]` may not be used on the stable release channel --> src/lib.rs:2:1 | 2 | #![feature(trait_alias)] | ^^^^^^^^^^^^^^^^^^^^^^^^ ```
yindo closed this issue 2026-02-17 17:12:19 -05:00
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@quexeky commented on GitHub (Aug 4, 2025):

This is intended behaviour - we use some nightly features of rust, so running rustup toolchain install nightly (or whatever your OS's version of that is) should work. If you're building it with cargo build you might also need to run it with cargo +nightly build

@quexeky commented on GitHub (Aug 4, 2025): This is intended behaviour - we use some nightly features of rust, so running `rustup toolchain install nightly` (or whatever your OS's version of that is) should work. If you're building it with `cargo build` you might also need to run it with `cargo +nightly build`
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@DecDuck commented on GitHub (Aug 4, 2025):

Yeah, it's a docs issue.

@DecDuck commented on GitHub (Aug 4, 2025): Yeah, it's a docs issue.
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@AdenMGB commented on GitHub (Aug 4, 2025):

i mention it in the building for windows part i beleive when that gets merged

@AdenMGB commented on GitHub (Aug 4, 2025): i mention it in the building for windows part i beleive when that gets merged
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@AdenMGB commented on GitHub (Aug 4, 2025):

oh it is whoops well thats good

@AdenMGB commented on GitHub (Aug 4, 2025): oh it is whoops well thats good
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@lockenkop commented on GitHub (Aug 4, 2025):

Yeah, it's a docs issue.

I thought so

Just wanted to give a heads up

@lockenkop commented on GitHub (Aug 4, 2025): > Yeah, it's a docs issue. I thought so Just wanted to give a heads up
yindo changed title from #![feature(trait_alias)] may not be used on the stable channel to [GH-ISSUE #7] #![feature(trait_alias)] may not be used on the stable channel 2026-06-05 14:25:14 -04:00
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Reference: Drop-OSS/drop-docs#3