warns on startup that it cannot remove bw_accounting
$ /usr/bin/tor --OrPort 19050 --Publish 0 --AccountingMax '200 GB' --SocksPort 0 --Log 'warn stdout'
[..]
Aug 23 20:24:26.000 [warn] Failed to unlink /home/weasel/.tor/bw_accounting: No such file or directory
It shouldn't warn when the file doesn't exist to begin with.