No. "Quashed" means invalidated. If a warrant is invalidated it cannot be used in an arrest.
Caution (noun): They were advised to use caution when hiking through bear country. A word of caution was included in the instructions. Caution (verb): Medical professionals caution against taking too much notice of email health warnings. There's a sign urging caution be used when boarding the escalator.
To use caution is to be careful. to get a cation is to be warned against doing what you are doing.
YES
He was a dictator that attempted to run the economy into the ground to his best ability, quashed protests with unrecorded executions, and was generally a nutter.
Eating butter
Under caution means that during an interview, you'll be told upfront what your rights are. An example is the reading of your Miranda Rights which starts out, 'You have the right to remain silent. Anything you say can and will be used against you in a court of law.'
A subpoena can be withdrawn or quashed.
degenerating into a mere recording of facts
to warn personnel against potential hazards or to caution against unsafe practices, and to prescribe the precaution that will be taken to protect personnel and property from mishap probability
Bribe the judge.
Caution.