Upgrade Rust toolchain to nightly-2026-01-22#4645
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tautschnig merged 1 commit intoJul 16, 2026
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Advance from nightly-2026-01-14 to nightly-2026-01-22. Two source changes are required (both first needed at nightly-2026-01-15); every intermediate nightly up to 01-22 then builds and passes the regression with no further changes. - rust-lang/rust#151096 removed the `Deref`/`DerefMut` impl for `rustc_middle::util::Providers` (which forwarded to its inner `queries` field). Access the query providers explicitly in provide.rs: `providers.queries.optimized_mir` and `DEFAULT_QUERY_PROVIDERS.queries.optimized_mir`. - rustc now renders unstable traits in `E0277` as "the nightly-only, unstable trait" rather than "the trait"; update the float-to-int-in-range expected files (`FloatToInt` is unstable). Co-authored-by: Kiro <kiro-agent@users.noreply.github.com>
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Pull request overview
Updates Kani to build and pass regression tests on a newer Rust nightly toolchain by accommodating upstream rustc API and diagnostic output changes introduced after nightly-2026-01-14.
Changes:
- Bump
rust-toolchain.tomlfromnightly-2026-01-14tonightly-2026-01-22. - Adjust query provider wiring to explicitly access
Providers.queries.*after upstream removal ofDerefforwarding. - Update
.expectedUI test outputs for E0277 wording that now labels unstable traits as “nightly-only”.
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
rust-toolchain.toml |
Advances the pinned Rust nightly used to build and test Kani. |
kani-compiler/src/kani_middle/provide.rs |
Updates rustc query provider access to match the new Providers API shape. |
tests/expected/float-to-int-in-range/invalid_int.expected |
Refreshes expected E0277 text to match new rustc wording for unstable traits. |
tests/expected/float-to-int-in-range/invalid_float.expected |
Refreshes expected E0277 text to match new rustc wording for unstable traits. |
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Seems like we are impacted by a Ubuntu outage: https://status.canonical.com/#/incident/KNms6QK9ewuzz-7xUsPsNylV20jEt5kyKsd8A-3ptQHQlVHKXwTShtGeZgLBjkPGsYE34Yqq6Qn0e1aU5TaseA%3D%3D - though finding further information proving pretty tricky. |
feliperodri
approved these changes
Jul 16, 2026
tautschnig
enabled auto-merge
July 16, 2026 17:12
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model-checking:main
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Advance from nightly-2026-01-14 to nightly-2026-01-22. Two source changes are required (both first needed at nightly-2026-01-15); every intermediate nightly up to 01-22 then builds and passes the regression with no further changes.
Deref/DerefMutimpl forProviders. rust-lang/rust#151096 removed theDeref/DerefMutimpl forrustc_middle::util::Providers(which forwarded to its innerqueriesfield). Access the query providers explicitly in provide.rs:providers.queries.optimized_mirandDEFAULT_QUERY_PROVIDERS.queries.optimized_mir.E0277as "the nightly-only, unstable trait" rather than "the trait"; update the float-to-int-in-range expected files (FloatToIntis unstable).Resolves #4646
Resolves #4603
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