use thread local queues.
use thread local queues.

Log listener is a singleton shared across threads, so make sure the
event queues are local to each thread.

sealocal/rails,tgxworld/rails,jeremy/rails,utilum/rails,Vasfed/rails,jeremy/rails,tijwelch/rails,arunagw/rails,bradleypriest/rails,prathamesh-sonpatki/rails,samphilipd/rails,mtsmfm/railstest,notapatch/rails,untidy-hair/rails,travisofthenorth/rails,gavingmiller/rails,baerjam/rails,riseshia/railsguides.kr,riseshia/railsguides.kr,vipulnsward/rails,Erol/rails,shioyama/rails,yalab/rails,kirs/rails-1,starknx/rails,kmayer/rails,rbhitchcock/rails,stefanmb/rails,printercu/rails,gcourtemanche/rails,esparta/rails,Stellenticket/rails,eileencodes/rails,brchristian/rails,gcourtemanche/rails,sergey-alekseev/rails,mechanicles/rails,ttanimichi/rails,sealocal/rails,MichaelSp/rails,Stellenticket/rails,vassilevsky/rails,mohitnatoo/rails,mathieujobin/reduced-rails-for-travis,iainbeeston/rails,yahonda/rails,illacceptanything/illacceptanything,tjschuck/rails,mechanicles/rails,Envek/rails,amoody2108/TechForJustice,fabianoleittes/rails,felipecvo/rails,deraru/rails,arunagw/rails,hanystudy/rails,joonyou/rails,deraru/rails,betesh/rails,jeremy/rails,lucasmazza/rails,palkan/rails,georgeclaghorn/rails,illacceptanything/illacceptanything,kirs/rails-1,kachick/rails,gavingmiller/rails,88rabbit/newRails,illacceptanything/illacceptanything,MSP-Greg/rails,fabianoleittes/rails,kddeisz/rails,aditya-kapoor/rails,yasslab/railsguides.jp,yasslab/railsguides.jp,rafaelfranca/omg-rails,shioyama/rails,Edouard-chin/rails,Sen-Zhang/rails,vipulnsward/rails,gfvcastro/rails,deraru/rails,coreyward/rails,voray/rails,mechanicles/rails,coreyward/rails,brchristian/rails,bogdanvlviv/rails,pschambacher/rails,utilum/rails,yawboakye/rails,alecspopa/rails,baerjam/rails,odedniv/rails,iainbeeston/rails,georgeclaghorn/rails,xlymian/rails,schuetzm/rails,travisofthenorth/rails,bolek/rails,ledestin/rails,BlakeWilliams/rails,iainbeeston/rails,sergey-alekseev/rails,gauravtiwari/rails,Spin42/rails,MSP-Greg/rails,repinel/rails,rafaelfranca/omg-rails,elfassy/rails,printercu/rails,matrinox/rails,kamipo/rails,elfassy/rails,georgeclaghorn/rails,illacceptanything/illacceptanything,rafaelfranca/omg-rails,utilum/rails,notapatch/rails,mtsmfm/rails,richseviora/rails,elfassy/rails,joonyou/rails,notapatch/rails,yhirano55/rails,aditya-kapoor/rails,koic/rails,joonyou/rails,baerjam/rails,deraru/rails,gavingmiller/rails,illacceptanything/illacceptanything,tjschuck/rails,ledestin/rails,yasslab/railsguides.jp,yawboakye/rails,ttanimichi/rails,notapatch/rails,gfvcastro/rails,mtsmfm/railstest,rails/rails,georgeclaghorn/rails,rails/rails,repinel/rails,yahonda/rails,bradleypriest/rails,yhirano55/rails,Vasfed/rails,88rabbit/newRails,EmmaB/rails-1,marklocklear/rails,Envek/rails,kmcphillips/rails,arjes/rails,sergey-alekseev/rails,marklocklear/rails,yawboakye/rails,Edouard-chin/rails,assain/rails,fabianoleittes/rails,bogdanvlviv/rails,koic/rails,arjes/rails,jeremy/rails,rbhitchcock/rails,betesh/rails,iainbeeston/rails,gauravtiwari/rails,riseshia/railsguides.kr,Stellenticket/rails,pschambacher/rails,kmcphillips/rails,lcreid/rails,kenta-s/rails,pvalena/rails,esparta/rails,bolek/rails,schuetzm/rails,ledestin/rails,BlakeWilliams/rails,schuetzm/rails,betesh/rails,riseshia/railsguides.kr,illacceptanything/illacceptanything,Sen-Zhang/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,mohitnatoo/rails,bradleypriest/rails,ngpestelos/rails,xlymian/rails,Erol/rails,pvalena/rails,printercu/rails,amoody2108/TechForJustice,kirs/rails-1,illacceptanything/illacceptanything,mijoharas/rails,esparta/rails,tijwelch/rails,yhirano55/rails,kenta-s/rails,kmcphillips/rails,Spin42/rails,maicher/rails,arunagw/rails,esparta/rails,rails/rails,eileencodes/rails,MSP-Greg/rails,repinel/rails,assain/rails,kddeisz/rails,yawboakye/rails,mathieujobin/reduced-rails-for-travis,tgxworld/rails,maicher/rails,kmcphillips/rails,yahonda/rails,ngpestelos/rails,mijoharas/rails,Vasfed/rails,lcreid/rails,mtsmfm/railstest,88rabbit/newRails,rossta/rails,matrinox/rails,kenta-s/rails,palkan/rails,shioyama/rails,yalab/rails,fabianoleittes/rails,utilum/rails,alecspopa/rails,palkan/rails,Envek/rails,rossta/rails,Stellenticket/rails,vipulnsward/rails,untidy-hair/rails,odedniv/rails,rails/rails,betesh/rails,printercu/rails,assain/rails,joonyou/rails,brchristian/rails,bogdanvlviv/rails,vipulnsward/rails,rbhitchcock/rails,kaspth/rails,richseviora/rails,coreyward/rails,kddeisz/rails,illacceptanything/illacceptanything,stefanmb/rails,mijoharas/rails,starknx/rails,kamipo/rails,tijwelch/rails,lcreid/rails,stefanmb/rails,amoody2108/TechForJustice,tgxworld/rails,maicher/rails,Spin42/rails,mtsmfm/rails,schuetzm/rails,gauravtiwari/rails,mechanicles/rails,felipecvo/rails,yahonda/rails,kamipo/rails,BlakeWilliams/rails,illacceptanything/illacceptanything,flanger001/rails,xlymian/rails,lucasmazza/rails,starknx/rails,voray/rails,sealocal/rails,richseviora/rails,Erol/rails,gcourtemanche/rails,marklocklear/rails,ngpestelos/rails,BlakeWilliams/rails,bogdanvlviv/rails,aditya-kapoor/rails,arunagw/rails,flanger001/rails,untidy-hair/rails,mathieujobin/reduced-rails-for-travis,gfvcastro/rails,Sen-Zhang/rails,kddeisz/rails,eileencodes/rails,matrinox/rails,illacceptanything/illacceptanything,tgxworld/rails,baerjam/rails,prathamesh-sonpatki/rails,ttanimichi/rails,kmayer/rails,illacceptanything/illacceptanything,Vasfed/rails,pvalena/rails,pschambacher/rails,kachick/rails,samphilipd/rails,alecspopa/rails,flanger001/rails,prathamesh-sonpatki/rails,vassilevsky/rails,illacceptanything/illacceptanything,hanystudy/rails,tjschuck/rails,MSP-Greg/rails,yalab/rails,assain/rails,shioyama/rails,mohitnatoo/rails,Erol/rails,travisofthenorth/rails,bolek/rails,arjes/rails,palkan/rails,hanystudy/rails,mohitnatoo/rails,eileencodes/rails,Envek/rails,flanger001/rails,travisofthenorth/rails,samphilipd/rails,koic/rails,Edouard-chin/rails,repinel/rails,kaspth/rails,rossta/rails,mtsmfm/rails,untidy-hair/rails,vassilevsky/rails,yalab/rails,MichaelSp/rails,EmmaB/rails-1,gfvcastro/rails,yhirano55/rails,aditya-kapoor/rails,Edouard-chin/rails,odedniv/rails,lcreid/rails,illacceptanything/illacceptanything,kachick/rails,lucasmazza/rails,MichaelSp/rails,felipecvo/rails,kaspth/rails,pvalena/rails,EmmaB/rails-1,voray/rails,prathamesh-sonpatki/rails,kmayer/rails,yasslab/railsguides.jp,tjschuck/rails