cmd/install: do not print similar error messages
cmd/install: do not print similar error messages

JCount/brew,MikeMcQuaid/brew,Homebrew/brew,EricFromCanada/brew,nandub/brew,EricFromCanada/brew,JCount/brew,JCount/brew,Homebrew/brew,nandub/brew,JCount/brew,claui/brew,MikeMcQuaid/brew,claui/brew,nandub/brew,claui/brew,MikeMcQuaid/brew,MikeMcQuaid/brew,Homebrew/brew,claui/brew,Homebrew/brew,EricFromCanada/brew,EricFromCanada/brew,nandub/brew