fix: logger warning
fix: logger warning

shahankhatch/pyethereum,shahankhatch/pyethereum,ethereum/pyethereum,inzem77/pyethereum,holiman/pyethereum,ddworken/pyethereum,ethermarket/pyethereum,vaporry/pyethereum,karlfloersch/pyethereum,pipermerriam/pyethereum,pipermerriam/pyethereum,jnnk/pyethereum,ethereum/pyethereum,karlfloersch/pyethereum,ckeenan/pyethereum,harlantwood/pyethereum