It was more of the same for the Sabres, who lost for the 17th time in 19 games with just 27 goals during that slump.
"A good clean bill of health in the summertime (and) we'll go forward to next year," Nolan said. "Whether we missed the playoffs by one point or we missed it by 30, 60 points, it doesn't matter."
The Bruins scored twice in a span of 1:29 late in the first period.
Campbell tipped in a pass by Jordan Caron from the left boards at 16:54. Krejci made it 2-0 at 18:23 after Zdeno Chara's shot off the backboards ricocheted to him at the left corner of the net. Krejci easily backhanded the puck into the open side.
Bergeron made it 3-0 at 11:43 of the third period, taking a pass from the right corner from Brad Marchand and putting a shot from the top of the right circle through Hackett's legs.
Tuukka Rask, who leads the NHL with seven shutouts, missed out on another when Hodgson converted a rebound of Marcus Foligno's shot at 13:58 of the third period.
"My focus has been a little bit (on the playoffs) already," Rask said, "but I'll rest a couple of days and crank it up."
Krejci was credited with his 19th goal when his shot off the backboards hit the back of Knapp's left skate and went into the net.
NOTES: Bruins fourth-line right wing Daniel Paille was helped from the ice after falling hard when he collided with Jake McCabe, who received a major penalty for interference and was ejected with 12:43 left. Paille didn't return, and the Bruins had no update on his condition. ... Besides Hackett, four other Sabres left the game with injuries — Christian Ehrhoff (concussion), Chris Stewart (leg), Matt D'Agostini (lower body), and Brian Flynn (lower body). ... Boston is 14-2-1 in afternoon games with one remaining. ... Hackett is 1-6-1 since being recalled from the AHL on March 17. ... The Bruins were eliminated on home ice in the playoffs the past two seasons, by Chicago last year and by Washington in Game 7 of the opening round in 2012.