Move INFO level traces to DEBUG

[azdle]

INFO level traces/logs are usually reserved for the application.

All of the existing INFO level traces were changed, except for those in examples.

resolves #536

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[azdle]

The clippy error seem to be caused by 73dcdaa, which itself says is fixing clippy errors.

I'm not sure why the io::Error::other changes were made, but if I revert those three changes clippy is happy. I've tacked that commit on here, if you want it.

[tikue]

Thanks for the PR! Let me address the clippy error — it's due to another commit I didn't upstream yet.

[tikue]

I think things should be good once 8655a73 is removed

[azdle]

Removed, though it looks like main is still failing.