No, none failed the hydro but ... a few failed the subsequent VIP because of hairline cracks. My shop always did a VIP after the tanks were returned from the hydro test.
Tanks with hairline cracks passed hydro? That's very hard to believe. How can a tank with a crack maintain 5/3 pressure?
At the shop where I work, prior to my time, we had a tank that passed a VE test and failed catastrophically (SLC) during hydro.