error: struct `SingleThreadedLinkedListAllocator` is never constructed --> source/alloc/src/heap.rs:288:12 | 288 | pub struct SingleThreadedLinkedListAllocator { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D dead-code` implied by `-D warnings` = help: to override `-D warnings` add `#[allow(dead_code)]`

Process completed with exit code 1.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/