The problem is definitely not the username.
Read through the entire log. There are at least three issues pointed out there. Two are easy to fix.
The other one, which is the one you’re asking about, I’m not sure, but it must have something to do with ESLint:
[eslint] eslint................................................................Failed
hookid: eslint
/builds/autonomicmind/training/code/codeabbey/029/jllemus5.js: line 1, col 1, Error - Filename 'jllemus5.js' does not match the naming convention. (filenames/match-regex)
1 problem
Run ESLint locally to see if it gives you more details.
Update: if you look closely at one of the easily fixed issues, you might find a line of your code which may have something to do with the ESLint failure.