Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v2, actions/cache@v2, actions-rs/cargo@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/cache@v2, actions-rs/cargo@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

method `key_type` is never used

fields `key_type` and `value_type` are never read

trait `ProtobufTypeDynamic` is never used

struct `ProtobufTypeDynamicImpl` is never constructed

associated functions `dynamic`, `compute_size`, `compute_size_with_length_delimiter`, `get_cached_size`, `get_cached_size_with_length_delimiter`, and `write_with_cached_size` are never used

`protobuf` (lib) generated 5 warnings