ci: Cache Rust toolchains in Linux namespace cache (#47699)

Release Notes:

- N/A

.github/workflows/autofix_pr.yml

@@ -35,6 +35,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}

.github/workflows/extension_tests.yml

@@ -61,6 +61,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::cargo_fmt
       run: cargo fmt --all -- --check
       shell: bash -euxo pipefail {0}

.github/workflows/release.yml

@@ -61,6 +61,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}
@@ -159,6 +160,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}

.github/workflows/run_agent_evals.yml

@@ -31,6 +31,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}

.github/workflows/run_cron_unit_evals.yml

@@ -35,6 +35,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}

.github/workflows/run_tests.yml

@@ -70,6 +70,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_pnpm
       uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2
       with:
@@ -129,6 +130,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}
@@ -211,6 +213,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}
@@ -297,6 +300,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}
@@ -341,6 +345,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}
@@ -376,6 +381,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: run_tests::check_dependencies::install_cargo_machete
       uses: clechasseur/rs-cargo@8435b10f6e71c2e3d4d3b7573003a8ce4bfc6386
       with:
@@ -413,6 +419,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: run_tests::check_docs::lychee_link_check
       uses: lycheeverse/lychee-action@82202e5e9c2f4ef1a55a3d02563e1cb6041e5332
       with:
@@ -461,6 +468,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: ./script/check-licenses
       run: ./script/check-licenses
       shell: bash -euxo pipefail {0}

.github/workflows/run_unit_evals.yml

@@ -36,6 +36,7 @@ jobs:
       uses: namespacelabs/nscloud-cache-action@v1
       with:
         cache: rust
+        path: ~/.rustup
     - name: steps::setup_linux
       run: ./script/linux
       shell: bash -euxo pipefail {0}

tooling/xtask/src/tasks/workflows/steps.rs

@@ -113,7 +113,9 @@ pub fn clippy(platform: Platform) -> Step<Run> {
 }
 
 pub fn cache_rust_dependencies_namespace() -> Step<Use> {
-    named::uses("namespacelabs", "nscloud-cache-action", "v1").add_with(("cache", "rust"))
+    named::uses("namespacelabs", "nscloud-cache-action", "v1")
+        .add_with(("cache", "rust"))
+        .add_with(("path", "~/.rustup"))
 }
 
 pub fn setup_linux() -> Step<Run> {