diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f4b2c70..2912855 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -57,7 +57,10 @@ jobs:
       run: cargo test --workspace --release
   msrv:
     name: "Check MSRV"
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: ["ubuntu-latest"]
+    runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout repository
       uses: actions/checkout@v6
@@ -71,7 +74,10 @@ jobs:
       run: cargo hack check --each-feature --locked --rust-version --ignore-private --workspace --all-targets --keep-going --exclude-features nightly
   minimal-versions:
     name: Minimal versions
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: ["ubuntu-latest"]
+    runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout repository
       uses: actions/checkout@v6
diff --git a/.github/workflows/rust-next.yml b/.github/workflows/rust-next.yml
index 27e195c..baa3a50 100644
--- a/.github/workflows/rust-next.yml
+++ b/.github/workflows/rust-next.yml
@@ -45,7 +45,12 @@ jobs:
       run: cargo hack test --each-feature --workspace --exclude-features nightly
   latest:
     name: "Check latest dependencies"
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: ["ubuntu-latest"]
+    runs-on: ${{ matrix.os }}
+    env:
+      CARGO_RESOLVER_INCOMPATIBLE_RUST_VERSIONS: allow
     steps:
     - name: Checkout repository
       uses: actions/checkout@v6
diff --git a/Cargo.toml b/Cargo.toml
index 874562c..9e9e6dc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -82,7 +82,6 @@ str_to_string = "warn"
 string_add = "warn"
 string_add_assign = "warn"
 string_lit_as_bytes = "warn"
-string_to_string = "warn"
 todo = "warn"
 trait_duplication_in_bounds = "warn"
 uninlined_format_args = "warn"