--force-non-host warning is misleading

[lolbinarycat]

Verification

• I searched for recent similar issues at https://github.com/rust-lang/rustup/issues?q=is%3Aissue+is%3Aopen%2Cclosed and found no duplicates.
• I am on the latest version of Rustup according to https://github.com/rust-lang/rustup/tags and am still able to reproduce my issue.

Problem

the error: DEPRECATED: future versions of rustup will require --force-non-host to install a non-host toolchain as the default. warning shows up, even if you are installing a non-default toolchain

Steps

on a glibc linux system, run rustup toolchain add nightly-x86_64-unknown-linux-musl

Possible Solution(s)

If --force-non-host is to be required when installing any non-host toolchain, the "as the default" text should be removed. If the warning description is correct, the warning should only appear when trying to install a default toolchain.

Notes

The "I am on the latest version" checkbox should be optional, as the latest rustup has not yet been packaged for nix.

Rustup version

rustup 1.26.0 (1980-01-01)

Installed toolchains

nightly-2025-02-16-x86_64-unknown-linux-gnu
nightly-2025-02-26-x86_64-unknown-linux-gnu
nightly-x86_64-unknown-linux-gnu (default)
nightly-x86_64-unknown-linux-musl
stage1

OS version

NixOS 24.11 (Vicuna)
24.11.712909.1dab772dd4a6

[rami3l]

@lolbinarycat Hmmm, we don't have that message any more: https://github.com/search?q=repo%3Arust-lang%2Frustup%20%22future%20versions%20of%20rustup%20will%20require%22&type=code, because it IS the default behavior now since #3982.

PS: as the default doesn't mean "as the default toolchain", but "as the default behavior". I get your idea.