As the fuzzer started to work, I've noticed that its output is totally messed up due to the excessive logging:

#9443	NEW    cov: 3063 ft: 4064 corp: 56/275b lim: 6 exec/s: 1573 rss: 179Mb L: 6/6 MS: 4 CrossOver-ChangeBinInt-CrossOver-ChangeByte-
UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.UTF-8 buffer is not interchange-valid.#9597	NEW    cov: 3063 ft: 4065 corp: 57/281b lim: 6 exec/s: 1599 rss: 180Mb L: 6/6 MS: 4 ShuffleBytes-ChangeByte-ChangeBit-ShuffleBytes-



This makes the fuzzer slightly inefficient + may cause some unexpected problems on CF side as we parse the logs for certain information.

This should be a simple fix, something like https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/getting_started.md#disable-noisy-error-message-logging I suppose.