Clean up tests to use Ok/Err format (#703) #1076

Job	Run time
Standard Tests (stable)	2m 24s
Check minimum rust version	40s
Standard Tests (beta)	2m 28s
Check file formatting and style	1m 12s
Dependency Tests (stable)	3m 11s
Dependency Tests (beta)	2m 53s
Check documentation	1m 1s
Database Tests - MySQL (stable)	1m 25s
Fuzz Tests	1m 20s
Database Tests - PostgreSQL (stable)	3m 0s
Database Tests - MySQL (beta)	1m 18s
Database Tests - PostgreSQL (beta)	3m 0s
Database Tests	1s
Test	1s
Pass	1s
	23m 55s

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