Let os.remove failures slide during cleanup
Let os.remove failures slide during cleanup

Summary:
When concurrent `buck query` runs are made, this cleanup occasionally
fails with OSErrors on os.remove() or os.path.getmtime. Ignoring those failures
is safe.

Test Plan: concurrent `buck query` runs no longer fail

Reviewed By: marcinkosiba

fbshipit-source-id: cf79266

kageiit/buck,dsyang/buck,shs96c/buck,SeleniumHQ/buck,clonetwin26/buck,Addepar/buck,shybovycha/buck,Addepar/buck,marcinkwiatkowski/buck,JoelMarcey/buck,JoelMarcey/buck,k21/buck,robbertvanginkel/buck,Addepar/buck,illicitonion/buck,grumpyjames/buck,rmaz/buck,illicitonion/buck,k21/buck,grumpyjames/buck,Addepar/buck,rmaz/buck,davido/buck,OkBuilds/buck,JoelMarcey/buck,raviagarwal7/buck,vschs007/buck,justinmuller/buck,daedric/buck,Addepar/buck,sdwilsh/buck,shybovycha/buck,sdwilsh/buck,clonetwin26/buck,OkBuilds/buck,nguyentruongtho/buck,romanoid/buck,LegNeato/buck,dsyang/buck,vschs007/buck,robbertvanginkel/buck,nguyentruongtho/buck,daedric/buck,grumpyjames/buck,janicduplessis/buck,shybovycha/buck,ilya-klyuchnikov/buck,romanoid/buck,ilya-klyuchnikov/buck,rmaz/buck,darkforestzero/buck,romanoid/buck,marcinkwiatkowski/buck,justinmuller/buck,romanoid/buck,davido/buck,raviagarwal7/buck,davido/buck,sdwilsh/buck,LegNeato/buck,sdwilsh/buck,shs96c/buck,vschs007/buck,clonetwin26/buck,daedric/buck,Addepar/buck,justinmuller/buck,davido/buck,OkBuilds/buck,zpao/buck,brettwooldridge/buck,davido/buck,shybovycha/buck,darkforestzero/buck,marcinkwiatkowski/buck,vschs007/buck,zhan-xiong/buck,dsyang/buck,brettwooldridge/buck,grumpyjames/buck,LegNeato/buck,sdwilsh/buck,brettwooldridge/buck,janicduplessis/buck,rmaz/buck,brettwooldridge/buck,sdwilsh/buck,ilya-klyuchnikov/buck,raviagarwal7/buck,dsyang/buck,davido/buck,nguyentruongtho/buck,marcinkwiatkowski/buck,kageiit/buck,darkforestzero/buck,SeleniumHQ/buck,clonetwin26/buck,OkBuilds/buck,shybovycha/buck,janicduplessis/buck,marcinkwiatkowski/buck,vschs007/buck,marcinkwiatkowski/buck,vschs007/buck,ilya-klyuchnikov/buck,k21/buck,dsyang/buck,romanoid/buck,OkBuilds/buck,robbertvanginkel/buck,illicitonion/buck,grumpyjames/buck,LegNeato/buck,zhan-xiong/buck,k21/buck,kageiit/buck,kageiit/buck,facebook/buck,robbertvanginkel/buck,vschs007/buck,Addepar/buck,darkforestzero/buck,marcinkwiatkowski/buck,sdwilsh/buck,OkBuilds/buck,zhan-xiong/buck,k21/buck,justinmuller/buck,zhan-xiong/buck,daedric/buck,rmaz/buck,vschs007/buck,clonetwin26/buck,brettwooldridge/buck,illicitonion/buck,shs96c/buck,brettwooldridge/buck,ilya-klyuchnikov/buck,sdwilsh/buck,Addepar/buck,grumpyjames/buck,grumpyjames/buck,rmaz/buck,raviagarwal7/buck,shs96c/buck,daedric/buck,robbertvanginkel/buck,illicitonion/buck,LegNeato/buck,dsyang/buck,rmaz/buck,JoelMarcey/buck,romanoid/buck,shs96c/buck,vschs007/buck,marcinkwiatkowski/buck,davido/buck,robbertvanginkel/buck,darkforestzero/buck,robbertvanginkel/buck,zpao/buck,davido/buck,LegNeato/buck,rmaz/buck,robbertvanginkel/buck,nguyentruongtho/buck,romanoid/buck,shs96c/buck,romanoid/buck,darkforestzero/buck,darkforestzero/buck,JoelMarcey/buck,sdwilsh/buck,daedric/buck,daedric/buck,shybovycha/buck,raviagarwal7/buck,OkBuilds/buck,shs96c/buck,darkforestzero/buck,rmaz/buck,janicduplessis/buck,janicduplessis/buck,zhan-xiong/buck,zhan-xiong/buck,robbertvanginkel/buck,daedric/buck,davido/buck,justinmuller/buck,janicduplessis/buck,JoelMarcey/buck,daedric/buck,raviagarwal7/buck,zpao/buck,shybovycha/buck,illicitonion/buck,clonetwin26/buck,shs96c/buck,k21/buck,illicitonion/buck,kageiit/buck,illicitonion/buck,SeleniumHQ/buck,clonetwin26/buck,janicduplessis/buck,JoelMarcey/buck,OkBuilds/buck,grumpyjames/buck,dsyang/buck,brettwooldridge/buck,clonetwin26/buck,OkBuilds/buck,facebook/buck,JoelMarcey/buck,romanoid/buck,justinmuller/buck,romanoid/buck,rmaz/buck,nguyentruongtho/buck,JoelMarcey/buck,shybovycha/buck,LegNeato/buck,SeleniumHQ/buck,darkforestzero/buck,robbertvanginkel/buck,raviagarwal7/buck,dsyang/buck,SeleniumHQ/buck,janicduplessis/buck,raviagarwal7/buck,davido/buck,darkforestzero/buck,brettwooldridge/buck,raviagarwal7/buck,dsyang/buck,clonetwin26/buck,Addepar/buck,shs96c/buck,raviagarwal7/buck,facebook/buck,vschs007/buck,LegNeato/buck,dsyang/buck,vschs007/buck,Addepar/buck,justinmuller/buck,nguyentruongtho/buck,k21/buck,rmaz/buck,robbertvanginkel/buck,SeleniumHQ/buck,romanoid/buck,grumpyjames/buck,dsyang/buck,clonetwin26/buck,daedric/buck,zpao/buck,ilya-klyuchnikov/buck,JoelMarcey/buck,davido/buck,justinmuller/buck,janicduplessis/buck,rmaz/buck,raviagarwal7/buck,LegNeato/buck,davido/buck,LegNeato/buck,justinmuller/buck,SeleniumHQ/buck,illicitonion/buck,clonetwin26/buck,LegNeato/buck,brettwooldridge/buck,OkBuilds/buck,janicduplessis/buck,JoelMarcey/buck,darkforestzero/buck,sdwilsh/buck,illicitonion/buck,ilya-klyuchnikov/buck,robbertvanginkel/buck,justinmuller/buck,facebook/buck,robbertvanginkel/buck,ilya-klyuchnikov/buck,grumpyjames/buck,darkforestzero/buck,Addepar/buck,SeleniumHQ/buck,justinmuller/buck,daedric/buck,LegNeato/buck,brettwooldridge/buck,facebook/buck,sdwilsh/buck,sdwilsh/buck,justinmuller/buck,shybovycha/buck,k21/buck,ilya-klyuchnikov/buck,dsyang/buck,ilya-klyuchnikov/buck,SeleniumHQ/buck,vschs007/buck,brettwooldridge/buck,SeleniumHQ/buck,zhan-xiong/buck,marcinkwiatkowski/buck,zpao/buck,ilya-klyuchnikov/buck,k21/buck,nguyentruongtho/buck,ilya-klyuchnikov/buck,k21/buck,LegNeato/buck,zpao/buck,facebook/buck,zhan-xiong/buck,daedric/buck,darkforestzero/buck,k21/buck,shs96c/buck,brettwooldridge/buck,raviagarwal7/buck,justinmuller/buck,k21/buck,ilya-klyuchnikov/buck,marcinkwiatkowski/buck,SeleniumHQ/buck,zhan-xiong/buck,JoelMarcey/buck,grumpyjames/buck,kageiit/buck,illicitonion/buck,illicitonion/buck,marcinkwiatkowski/buck,JoelMarcey/buck,illicitonion/buck,facebook/buck,dsyang/buck,k21/buck,zhan-xiong/buck,zhan-xiong/buck,OkBuilds/buck,daedric/buck,janicduplessis/buck,zhan-xiong/buck,romanoid/buck,marcinkwiatkowski/buck,shybovycha/buck,shs96c/buck,marcinkwiatkowski/buck,sdwilsh/buck,shybovycha/buck,shs96c/buck,janicduplessis/buck,shybovycha/buck,SeleniumHQ/buck,Addepar/buck,vschs007/buck,raviagarwal7/buck,grumpyjames/buck,romanoid/buck,OkBuilds/buck,shs96c/buck,OkBuilds/buck,kageiit/buck,shybovycha/buck,brettwooldridge/buck,davido/buck,zhan-xiong/buck,zpao/buck,rmaz/buck,clonetwin26/buck,Addepar/buck,SeleniumHQ/buck,clonetwin26/buck