chore: fix also the linter warnings

[tompizmor]

At #210 I fixed some errors returning by the linter action in the main branch. However, it seems for that action to pass, we should also fix the warnings.

  Warning: unused-parameter: parameter 'cmd' seems to be unused, consider removing or renaming it as _ (revive)
  Warning: redefines-builtin-id: redefinition of the built-in function close (revive)
  Warning: redefines-builtin-id: redefinition of the built-in function close (revive)
  Warning: unused-parameter: parameter 'format' seems to be unused, consider removing or renaming it as _ (revive)
  Warning: unused-parameter: parameter 'i' seems to be unused, consider removing or renaming it as _ (revive)
  Warning: unused-parameter: parameter 'log' seems to be unused, consider removing or renaming it as _ (revive)
  Warning: unused-parameter: parameter 'log' seems to be unused, consider removing or renaming it as _ (revive)