cleaner error handling in consume*arg functions
cleaner error handling in consume*arg functions

raintank/metrictank,raintank/metrictank,raintank/raintank-metric,replay/metrictank,raintank/metrictank,raintank/metrictank,raintank/raintank-metric,replay/metrictank,replay/metrictank,replay/metrictank,raintank/raintank-metric