Server Log (tried to pick up entity)

[blueberry]

What exactly does this mean in server logs? I noticed a hacker caused this to spam in a log I was looking at but also I noticed that it happens to some well-known players that I doubt are hacking. It also sometimes says tried to touch flag instead of tried to pick up entity. Sometimes the distance was very large.

[SELECT ALL] Code:

[<I.P.>] <player> tried to pick up entity #221 (armour), distance 73.33 (1)
[<I.P.>] <player> tried to pick up entity #226 (ammobox), distance 124.50 (2)
[<I.P.>] <player> tried to pick up entity #216 (ammobox), distance 131.82 (3)
[<I.P.>] <player> tried to pick up entity #269 (helmet), distance 146.75 (4)
[<I.P.>] <player> tried to pick up entity #269 (helmet), distance 146.75 (5)
[<I.P.>] <player> tried to pick up entity #269 (helmet), distance 146.75 (6)
[<I.P.>] <player> tried to pick up entity #221 (armour), distance 102.09 (7)