Coventry City are now fourteen points adrift at the foot of the League One table after matches on Tuesday night.
City's 2-1 defeat at Bury means that with twelve games left, the Sky Blues are fourteen points behind 20th placed Oldham who won 2-1 at Northampton Town.
Neither Chesterfield or Port Vale who are in the bottom four played with their matches at Walsall and Rochdale respectively called off.
Swindon did play and beat Gillingham 3-1 to go 21st.
Second placed Scunthorpe lost 2-1 at home to AFC Wimbledon whilst fourth placed Bolton drew 1-1 at home to Bristol Rovers.
Fifth placed Bradford City drew 2-2 with MK Dons and sixth place Millwall beat Peterborough 1-0.
Elsewhere, Shrewsbury Town beat Charlton 4-3 and Fleetwood's game at Oxford was postponed.