A local club organises a swimming gala. Swimmers are ranked in ascending order of their race completion times.

The rankings are updated after each heat.

The pseudocode for part of the program used to sort and update the swimming rankings is shown below.

1 PROCEDURE sortTimes()
2 BEGIN PROCEDURE
3     SET temp TO []
4     FOR i FROM 0 TO LENGTH(swimTimes) - 1 DO
5         FOR j FROM 0 TO LENGTH(swimTimes) - 1 DO
6             IF swimTimes[j][2] > swimTimes[j + 1][2] THEN
7                 SET temp TO swimTimes[j]
8                 SET swimTimes[j] TO swimTimes[j + 1]
9                 SET swimTimes[j + 1] TO temp
10            END IF
11        END FOR
12    END FOR
13 END PROCEDURE

The algorithm compiles successfully, but includes an error on line 6 when it runs.