Resolving clippy warning

[allaboutevemirolive]

I've cut the Clippy warnings in half, dropping from 57 to 28. The remaining warnings likely require changes to variable names.

@BurntSushi

[BurntSushi]

I don't really agree with most of these changes. I don't feel terribly strong about most of them, but generally prefer to not accept most of these. This is why I don't have Clippy setup to run. (I realize I could pick and choose which lints I want to enable, but this is a lot of work to do across the number of repos I maintain and just ultimately isn't worth it for me.)

I marked the changes that I agree with.

[allaboutevemirolive]

Is this okay with you? @BurntSushi

Regarding your opinion on Clippy, I will take note of that. Currently, I am studying string searching related to the unstable search function in the Rust compiler and came across your great works, specifically Aho-Corasik's :).

[BurntSushi]

Thanks!