Crafting Linux User Error Strings

puzzle CLUES(input):

Secret code: CASEMastermind resultSecret code: output
Leave it after equinox ends LOGIC(candle)
Lead vermin keel over Essentially, demonstrative pronoun!
Rule every other alliance LIST(garter)
Secure time machine failed to start EMPTY(gnu)
Took off flower Breathe heavily during pop anthem
Touched, left sadly input
Understand outspoken rejection Console has leading Kickstarter site