Make cfgJsBin use captureStdout so it prints out stderr output in case there is a stderr output.
Make cfgJsBin use captureStdout so it prints out stderr output in case there is a stderr output.

MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,nth10sd/funfuzz,nth10sd/funfuzz,nth10sd/funfuzz,MozillaSecurity/funfuzz