It makes no sense, when there is phpcs checking and the result is non-voting. Nobody is looking at that output. You can disable it and save the resources.
Some already fixed sniffs are reintroduced into core, due to nobody looking at the sniff output.
Please spilt the phpcs in a voting step and a non-voting step. When a sniff pass all files in core, than moving it from non-voting to voting to avoid that it came back.
It is a hard job and will take some time to fix all sniffs or to configurate it that all will pass, so do it step by step and make the already fixed things voting to avoid merging of that.
Thanks.
Version: wmf-deployment
Severity: enhancement