safe: add race test to ensure that Reader is safe
safe: add race test to ensure that Reader is safe

tsuru/tsuru,guilhermebr/tsuru,ArxdSilva/tsuru,gwmoura/tsuru,firebitsbr/tsuru,hugoantunes/tsuru,tuxmonteiro/tsuru,gciotta/tsuru,tuxmonteiro/tsuru,gciotta/tsuru,hcxiong/tsuru,firebitsbr/tsuru,cezarsa/tsuru,kgrvamsi/tsuru,4eek/tsuru,hugoantunes/tsuru,tsuru/tsuru,tuxmonteiro/tsuru,kgrvamsi/tsuru,gciotta/tsuru,guilhermebr/tsuru,cgvarela/tsuru,Endika/tsuru,mderaldo/tsuru,ggarnier/tsuru,RichardKnop/tsuru,jblancett/tsuru,ggarnier/tsuru,jblancett/tsuru,hcxiong/tsuru,guilhermebr/tsuru,gwmoura/tsuru,mderaldo/tsuru,tsuru/tsuru,ggarnier/tsuru,guilhermebr/tsuru,ArxdSilva/tsuru,hcxiong/tsuru,RichardKnop/tsuru,jblancett/tsuru,ArxdSilva/tsuru,gwmoura/tsuru,Endika/tsuru,cezarsa/tsuru,ArxdSilva/tsuru,4eek/tsuru,mderaldo/tsuru,cezarsa/tsuru,cgvarela/tsuru,cezarsa/tsuru,RichardKnop/tsuru,tsuru/tsuru,cgvarela/tsuru,firebitsbr/tsuru,Endika/tsuru,kgrvamsi/tsuru,4eek/tsuru,ggarnier/tsuru