Bug:Filter not work when only configure "flymake-google-cpplint-filter" and "flymake-google-cpplint-command"

[llmplusplus]

(custom-set-variables                                                                                
 '(flymake-google-cpplint-command "/usr/local/bin/cpplint")                                                 
 '(flymake-google-cpplint-filter "--filter=-build/include") 

not work,but when i add "flymake-google-cpplint-verbose" its work well.

(custom-set-variables                                                                                
 '(flymake-google-cpplint-command "/usr/local/bin/cpplint")                                          
 '(flymake-google-cpplint-verbose "--verbose=0")                                                     
 '(flymake-google-cpplint-filter "--filter=-build/include")