exclude pool_test from race detector testing
exclude pool_test from race detector testing

suzuken/s3gof3r,cce/s3gof3r,tempbottle/s3gof3r,reem/s3gof3r,JamesClonk/s3gof3r,mhoglan/s3gof3r,rlmcpherson/s3gof3r,eyethereal/s3gof3r