In trace README, redirect stderr to stdout
In trace README, redirect stderr to stdout

pparkkin/eta,rahulmutt/ghcvm,rahulmutt/ghcvm,pparkkin/eta,pparkkin/eta,pparkkin/eta,AlexeyRaga/eta,rahulmutt/ghcvm,AlexeyRaga/eta,AlexeyRaga/eta,rahulmutt/ghcvm,pparkkin/eta,AlexeyRaga/eta,rahulmutt/ghcvm,AlexeyRaga/eta