Installation and upgrades throw Unused lexical variable warnings

[cloudchin]

As far as I can remember, installing and updating request.el from MELPA has always thrown these warnings when compiling. I can't say if the exact list has remained the same, but nonetheless, it's consistently thrown compiler warnings. Can this be avoided, and if not, why? Most importantly, what do these warnings mean in the context of using request.el?

I'm not familiar with the elisp compiler internals or it's relation to lexical binding but I found this as potentially related: https://stackoverflow.com/questions/31870656/what-does-the-underscore-mean-in-elisp

These are the warnings I received updating request.el today:

request.el:393:1:Warning: Unused lexical variable ‘unix-socket’
request.el:393:1:Warning: Unused lexical variable ‘status-code’
request.el:393:1:Warning: Unused lexical variable ‘timeout’
request.el:393:1:Warning: Unused lexical variable ‘complete’
request.el:393:1:Warning: Unused lexical variable ‘success’
request.el:393:1:Warning: Unused lexical variable ‘parser’
request.el:393:1:Warning: Unused lexical variable ‘files’
request.el:393:1:Warning: Unused lexical variable ‘type’
request.el:644:1:Warning: Unused lexical variable ‘timeout’
request.el:844:1:Warning: Unused lexical variable ‘version’
request.el:926:1:Warning: Unused lexical variable ‘timeout’
request.el:1047:1:Warning: Unused lexical variable ‘headers’
request.el:1047:1:Warning: Unused lexical variable ‘data’
request.el:1047:1:Warning: Unused lexical variable ‘type’
request.el:1173:1:Warning: Unused lexical variable ‘num-redirects’
request.el:1173:1:Warning: Unused lexical variable ‘version’
request.el:1260:1:Warning: Unused lexical variable ‘expiration’
request.el:1260:1:Warning: Unused lexical variable ‘http-only’
request.el:1260:1:Warning: Unused lexical variable ‘flag’

FWIW, I'm using emacs 26.2 as distributed by Fedora 30 repositories.