Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/cache@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

module attribute @SInCE was set but never used

variable "char" is unused (if the variable is not meant to be used, prefix it with an underscore)

variable "i" is unused (if the variable is not meant to be used, prefix it with an underscore)