Upgrade stable branch to Rust 1.89.0 (#4280)

Advance the stable branch to b705ac5
and use the 1.89.0 channel.

This PR was created through:
1. Running: `git merge b705ac5 -X
theirs`
2. Modifying the channel in `rust-toolchain.toml` to `1.89.0`

The rationale for picking b705ac5 is as
follows:
- The 1.89.0 release was branched from main on 2025-06-20 (see
https://releases.rs/docs/1.89.0/)
- The latest commit on main for which compilation and regressions pass
with the 1.89.0 channel is b705ac5
(which uses the 2025-06-27 toolchain). The next commit (which upgrades
to the 2025-06-30 toolchain) fails to compile.

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 and MIT licenses.

---------

Signed-off-by: Felipe R. Monteiro <felisous@amazon.com>
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: Felipe R. Monteiro <felisous@amazon.com>
Co-authored-by: Rémi Delmas <remi.delmas.3000@gmail.com>
Co-authored-by: Remi Delmas <delmasrd@amazon.com>
Co-authored-by: Celina G. Val <celinval@amazon.com>
Co-authored-by: Felipe R. Monteiro <rms.felipe@gmail.com>
Co-authored-by: Qinheping Hu <qinhh@amazon.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: tautschnig <1144736+tautschnig@users.noreply.github.com>
Co-authored-by: rajath-mk <rjkotyal@amazon.com>
Co-authored-by: Carolyn Zech <cmzech@amazon.com>
Co-authored-by: Michael Tautschnig <tautschn@amazon.com>
Co-authored-by: Michael Tautschnig <mt@debian.org>
Co-authored-by: thanhnguyen-aws <ntson@amazon.com>
Co-authored-by: carolynzech <71352687+carolynzech@users.noreply.github.com>
Co-authored-by: Florian Bartels <108917393+flba-eb@users.noreply.github.com>
Co-authored-by: celinval <35149715+celinval@users.noreply.github.com>
Co-authored-by: Samuel Thomas <sgpthomas@gmail.com>
Co-authored-by: Sammy Thomas <sgtpl@amazon.com>
Co-authored-by: clubby789 <jamie@hill-daniel.co.uk>
Co-authored-by: clubby789 <jamie@osec.io>
Co-authored-by: Ben Kirwin <ben@kirw.in>
Co-authored-by: sintemal <44271441+sintemal@users.noreply.github.com>
Co-authored-by: Alex Portland <115113415+AlexanderPortland@users.noreply.github.com>
Co-authored-by: Carolyn Zech <carolynzech@gmail.com>

Author: 21 people

.github/workflows/bench-compiler.yml

@@ -37,6 +37,18 @@ jobs:
           ref: ${{ env.NEW_REF }}
           fetch-depth: 1
 
+      - name: Cache Kani build artifacts
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          shared-key: "kani-rust-cache-bench"
+          workspaces: |
+            new
+            new/tools/compile-timer
+            old
+            old/tools/compile-timer
+          cache-directories: "~/.rustup"
+
       - name: Set up Kani Dependencies (old variant)
         uses: ./old/.github/actions/setup
         with:
@@ -101,6 +113,18 @@ jobs:
           ref: ${{ env.NEW_REF }}
           fetch-depth: 1
 
+      - name: Cache Kani build artifacts
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          shared-key: "kani-rust-cache-bench"
+          workspaces: |
+            new
+            new/tools/compile-timer
+            old
+            old/tools/compile-timer
+          cache-directories: "~/.rustup"
+
       - name: Set up Kani Dependencies (old variant)
         uses: ./old/.github/actions/setup
         with:

.github/workflows/kani.yml

@@ -23,6 +23,13 @@ jobs:
       - name: Checkout Kani
         uses: actions/checkout@v4
 
+      - name: Cache Kani build artifacts
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          shared-key: "kani-rust-cache-dev"
+          cache-directories: "~/.rustup"
+
       - name: Setup Kani Dependencies
         uses: ./.github/actions/setup
         with:
@@ -43,6 +50,13 @@ jobs:
           sudo apt-get install -y python3-pip
           pushd tools/benchcomp && pip3 install -r requirements.txt
 
+      - name: Cache Kani build artifacts
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          shared-key: "kani-rust-cache-release"
+          cache-directories: "~/.rustup"
+
       - name: Setup Kani Dependencies
         uses: ./.github/actions/setup
         with:
@@ -60,6 +74,13 @@ jobs:
       - name: Checkout Kani
         uses: actions/checkout@v4
 
+      - name: Cache Kani build artifacts
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          shared-key: "kani-rust-cache-release"
+          cache-directories: "~/.rustup"
+
       - name: Setup Kani Dependencies
         uses: ./.github/actions/setup
         with:
@@ -76,6 +97,12 @@ jobs:
       - name: Checkout Kani
         uses: actions/checkout@v4
 
+      - name: Cache Kani build artifacts
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          cache-directories: "~/.rustup"
+
       - name: Setup Kani Dependencies
         uses: ./.github/actions/setup
         with:

.github/workflows/verify-std-check.yml

@@ -41,6 +41,14 @@ jobs:
           path: kani
           fetch-depth: 0
 
+      - name: Cache Kani build artifacts
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          workspaces: kani
+          shared-key: "kani-rust-cache-dev"
+          cache-directories: "~/.rustup"
+
       - name: Setup Kani Dependencies
         uses: ./kani/.github/actions/setup
         with:

CHANGELOG.md

@@ -4,6 +4,41 @@ This file contains notable changes (e.g. breaking changes, major changes, etc.)
 
 This file was introduced starting Kani 0.23.0, so it only contains changes from version 0.23.0 onwards.
 
+## [0.63.0]
+
+### Breaking Changes
+* Finish deprecating `--enable-unstable`, `--restrict-vtable`, and `--write-json-symtab` by @carolynzech in https://github.com/model-checking/kani/pull/4110
+
+### Major Changes
+* Add support for quantifiers by @qinheping in https://github.com/model-checking/kani/pull/3993
+
+### What's Changed
+* Improvements to autoharness feature:
+  * Autoharness argument validation: only error on `--quiet` if `--list` was passed by @carolynzech in https://github.com/model-checking/kani/pull/4069
+  * Autoharness: change `pattern` options to accept regexes by @carolynzech in https://github.com/model-checking/kani/pull/4144
+* Target feature changes:
+  * Enable target features: x87 and sse2 by @thanhnguyen-aws in https://github.com/model-checking/kani/pull/4062
+  * Set target features depending on the target architecture by @zhassan-aws in https://github.com/model-checking/kani/pull/4127
+* Support for quantifiers:
+  * Fix the error that Kani panics when there is no external parameter in quantifier's closure. by @thanhnguyen-aws in https://github.com/model-checking/kani/pull/4088
+  * Gate quantifiers behind an experimental feature by @thanhnguyen-aws in https://github.com/model-checking/kani/pull/4141
+* Other:
+  * Fix the bug: Loop contracts are not composable with function contracts by @thanhnguyen-aws in https://github.com/model-checking/kani/pull/3979
+  * Add setup scripts for Ubuntu 20.04 by @zhassan-aws in https://github.com/model-checking/kani/pull/4082
+  * Use our toolchain when invoking `cargo metadata` by @carolynzech in https://github.com/model-checking/kani/pull/4090
+  * Fix a bug codegening `SwitchInt`s with only an otherwise branch by @bkirwi in https://github.com/model-checking/kani/pull/4095
+  * Update `kani::mem` pointer validity documentation by @carolynzech in https://github.com/model-checking/kani/pull/4092
+  * Add support for edition 2018 crates using assert! (Fixes #3717) by @sintemal in https://github.com/model-checking/kani/pull/4096
+  * Handle generic defaults in BoundedArbitrary derives by @zhassan-aws in https://github.com/model-checking/kani/pull/4117
+  * `ty_mangled_name`: only use non-mangled name if `-Zcffi` is enabled. by @carolynzech in https://github.com/model-checking/kani/pull/4114
+  * Improve Help Menu by @carolynzech in https://github.com/model-checking/kani/pull/4109
+  * Start stabilizing `--jobs` and `list`; deprecate default memory checks by @carolynzech in https://github.com/model-checking/kani/pull/4108
+  * Refactor simd_bitmask to reduce the number of iterations by @zhassan-aws in https://github.com/model-checking/kani/pull/4129
+  * Improve linking error output for `#[no_std]` crates by @AlexanderPortland in https://github.com/model-checking/kani/pull/4126
+  * Rust toolchain upgraded to 2025-06-03 by @carolynzech @thanhnguyen-aws @zhassan-aws
+
+**Full Changelog**: https://github.com/model-checking/kani/compare/kani-0.62.0...kani-0.63.0
+
 ## [0.62.0]
 
 ### What's Changed