DON'T auto import core::slice::SlicePattern

[cathaysia]

When I call as_slice() method, ra always want import core::slice::SlicePattern, but this trait is unstable feature, and it is useless in the mose case.

Is there anyway disable ra's this behaviour? Or could ra show a icon to tell me it want import SlicePattern?

[lnicola]

I don't think we should offer unstable completions on stable toolchains. What are you calling as_slice on?

[cathaysia]

here is the configuration of ra:

[lnicola]

What's in your rust-toolchain.toml and why are you setting server.path? That's forcing the extension (of which you have a nightly release from 2-3 weeks ago) to use the rustup-provided server, which is from November. The extension already contains the server binary.

[cathaysia]

What's in your rust-toolchain.toml

[toolchain]
channel = "1.83.0"

why are you setting server.path

Because I have encountered problems caused by incompatibility between rust and ra versions before. It seems to be 1.68 (rustc) and ra (1.81.0?). So later I forced vscode to use the ra provided by rustup.

[lnicola]

You're using Rust 1.83, so there's no need to set that.

[cathaysia]

When I set rust-analyzer.server.path = null, then ra don't auto import SlicePattern. It seems that I am using too old ra.