[beta 1.95] backport test fixes#16715
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weihanglo merged 3 commits intorust-lang:rust-1.95.0from Mar 6, 2026
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### What does this PR try to resolve? Blocks a compiler change, see [#t-cargo > &rust-lang#96;replace::use_a_spec_to_select&rust-lang#96; test failure @ 💬](https://rust-lang.zulipchat.com/#narrow/channel/246057-t-cargo/topic/.60replace.3A.3Ause_a_spec_to_select.60.20test.20failure/near/577341461) ### How to test and review this PR?
### What does this PR try to resolve? Fixes rust-lang#16704 ### How to test and review this PR?
…16714) ### What does this PR try to resolve? rust-lang/rust#152164 added a warn-by-default `unused_features` lint. Cargo injects `#![feature(frontmatter)]` for all embedded scripts, but scripts without frontmatter syntax never trigger feature gate check, and causes causing the lint warning. Given the stabilization FCP of frontmatter [is complete](rust-lang/rust#148051 (comment)) already, we could expect it will soon be stabilized (?). It should be fine we suppress this new unstable lint. ### How to test and review this PR? Test suite passes. See <rust-lang#16713 (comment)> for more.
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[beta] update stage0 and cargo Update stage0 to 1.94.0 <https://forge.rust-lang.org/release/process.html#beta-stage0-update-friday> --- Update cargo submodule #153515 2 commits in f298b8c82da0cba538516b45b04a480fc501d4c0..e8eb8435d5cad936237a1ee798c2f983624d0825 2026-02-24 21:59:20 +0000 to 2026-03-06 12:51:00 -0600 - [beta-1.95] Add missing truncate when writing .crate files (rust-lang/cargo#16713) - [beta 1.95] backport test fixes (rust-lang/cargo#16715)
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This backports the following to fix the beta branch and to reduce spurious errors:
unused_featureslint for embedded #16714 -- fix(script): surpress unused_features lint for embedded