Upgrade toolchain to 2025-03-18 #3959
Merged
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The main change to get the toolchain upgrade to 2025-03-18 to work is to make this change in
kani-regression.sh
:Explanation:
cargo build
suppresses warnings from dependencies unless they're local dependencies (e.g. included withpath = ...
) (see dependencies warning control, overriding path heuristic rust-lang/cargo#8546)charon
as a git submodule and add it as a dependency usingpath = ...
, its warnings are not suppressed#[must_use]
attribute on an enum used in charon: rust-lang/rust@2439623278. This results in a warning that causes theRUSTFLAGS="-D warnings" cargo build
to fail: https://github.com/model-checking/kani/actions/runs/13914318184/job/38934470822#step:4:2983The short-term solution in this PR is to exclude the Charon feature when building with
-D warnings
.The long-term solution is to fix the warning in upstream Charon (if it's not already fixed), and update our Charon pin to point to a commit that includes the fix. Updating the Charon pin requires us to upgrade our MIR to ULLBC module though, which will require a non-trivial amount of work since it's 2.5 months old.
Resolves #3944
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 and MIT licenses.