For example:
2014-03-19T22:06:08.000Z
antispoof
enwiki
mw1065
ILLEGAL new account '**' Contains unassigned character "☀" (U+2600)
2014-03-19T22:05:58.000Z
antispoof
eswiki
mw1211
ILLEGAL new account '**' Contiene caracteres obsoletos o no asignados
Source code: https://github.com/wikimedia/mediawiki-extensions-AntiSpoof/blob/4cadf2af2cd49/AntiSpoofHooks.php#L64-L68
Version: unspecified
Severity: minor