Describe the issue:

I am running Echidna on a relatively small codebase, but it is taking too long to exit (around 45 seconds)

Initially, I thought it was due to the time spent saving the corpus, but after some measurements (watch du echidna, to check for the corpusDir size), I believe that's not the case:

Seems like it's another cleanup process taking too long.
Also, if I Ctrl+C, even after saving the corpus, the HTML will be empty.

Code example to reproduce the issue:

N/A

Version:

Echidna 2.2.1
slither 0.9.3 PR crytic/slither#2064

Relevant log output:

N/A