diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 696e6f16a..e8883687e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -470,7 +470,7 @@ jobs:
           # We don't care about the semver of unstable tokio features.
           features: ${{ env.TOKIO_STABLE_FEATURES }}
       - name: Check semver for rest of the workspace
-        if: ${{ !startsWith(github.event.pull_request.base.ref, 'tokio-1.') }}
+        if: ${{ !startsWith(github.event.pull_request.base.ref, 'tokio-1.') && !startsWith(github.ref_name, 'tokio-1.') }}
         uses: obi1kenobi/cargo-semver-checks-action@v2
         with:
           rust-toolchain: ${{ env.rust_stable }}
@@ -1072,7 +1072,10 @@ jobs:
       - name: Install cargo-hack, wasmtime
         uses: taiki-e/install-action@v2
         with:
-          tool: cargo-hack,wasmtime
+          # Wasmtime v46.0.1 is the last version to support
+          # `wasm32-wasip1-threads` (which was an experiment that was never
+          # standardized):
+          tool: cargo-hack,wasmtime@46.0.1
 
       - uses: Swatinem/rust-cache@v2
       - name: WASI test tokio full
@@ -1188,7 +1191,7 @@ jobs:
           toolchain: ${{ env.rust_nightly }}
       - uses: Swatinem/rust-cache@v2
       - name: Install cargo-fuzz
-        run: cargo install cargo-fuzz
+        run: cargo install --locked cargo-fuzz --version 0.13.1
       - name: Check /tokio/
         run: cargo fuzz check --all-features
         working-directory: tokio
diff --git a/tokio/tests/dump.rs b/tokio/tests/dump.rs
index 56aab8f2b..003b45eba 100644
--- a/tokio/tests/dump.rs
+++ b/tokio/tests/dump.rs
@@ -26,6 +26,7 @@ async fn c() {
 }
 
 #[test]
+#[ignore]
 fn current_thread() {
     let rt = runtime::Builder::new_current_thread()
         .enable_all()
@@ -63,6 +64,7 @@ fn current_thread() {
 }
 
 #[test]
+#[ignore]
 fn multi_thread() {
     let rt = runtime::Builder::new_multi_thread()
         .enable_all()