Coach's Challenge: PIT @ TOR - 13:05 of First Period

At 13:05 of the first period in the Penguins/Maple Leafs game, Pittsburgh requested a Coach's Challenge to review whether James van Riemsdyk interfered with Pittsburgh goaltender Marc-Andre Fleury before the puck entered the net.
After reviewing all available replays and consulting with NHL Hockey Operations staff, the Referee confirmed no goaltender interference infractions occurred before the puck crossed the goal line.

Therefore the original call stands - good goal Toronto Maple Leafs.
Since the Coach's Challenge did not result in the original call being overturned, the Pittsburgh Penguins forfeit their time-out.