feat: adds cache-on-failure propagation

Author: samuelhnrq

README.md

@@ -55,6 +55,7 @@ Afterward, the `components` and `target` specified via inputs are installed in a
 | `components`       | Comma-separated string of additional components to install e.g. `clippy, rustfmt`      |               |
 | `cache`            | Automatically configure Rust cache (using `Swatinem/rust-cache`)                       | true          |
 | `cache-workspaces` | Propagates the value to `Swatinem/rust-cache`                                          |               |
+| `cache-on-failure` | Propagates the value to `Swatinem/rust-cache`                                          |               |
 | `matcher`          | Enable problem matcher to surface build messages and formatting issues                 | true          |
 | `rustflags`        | Set the value of `RUSTFLAGS` (set to empty string to avoid overwriting existing flags) | "-D warnings" |
 

action.yml

@@ -28,6 +28,10 @@ inputs:
   cache-workspaces:
     description: "Paths to multiple Cargo workspaces and their target directories, separated by newlines."
     required: false
+  cache-on-failure:
+    description: "Also cache on workflow failures"
+    default: "false"
+    required: false
   matcher:
     description: "Enable the Rust problem matcher"
     required: false
@@ -176,3 +180,4 @@ runs:
       uses: Swatinem/rust-cache@v2
       with:
         workspaces: ${{inputs.cache-workspaces}}
+        cache-on-failure: ${{inputs.cache-on-failure}}