ToME: the Tales of Maj'Eyal

I didn't mean to uses Giant Leap.
I didn't mean to performs a melee critical strike against Runed bone giant!
Runed bone giant slows down.
I didn't mean to performs a melee critical strike against Runed bone giant!
Runed bone giant is maimed.
I didn't mean to hits Runed bone giant for 2366 physical, 2 arcane, 3 physical, 3 physical, 4183 physical, 2 arcane, 3 physical (6566 total damage).
[quote]
I didn't mean to uses Execution.
I didn't mean to performs a melee critical strike against Runed bone giant!
Runed bone giant rises from the dead!
Runed bone giant has recovered from the maiming.
Runed bone giant deactivates Inner Power.
Runed bone giant speeds up.
Runed bone giant deactivates Arcane Power.
Runed bone giant slows down.
Runed bone giant is maimed.
I didn't mean to performs a melee critical strike against Runed bone giant!
I didn't mean to hits Runed bone giant for 1752 physical, 8 arcane, 3 physical, 3 physical, 2506 physical, 8 arcane, 3 physical (4286 total damage).
Runed bone giant misses I didn't mean to.
I didn't mean to counters the attack!
I didn't mean to performs a melee critical strike against Runed bone giant!
I didn't mean to performs a melee critical strike against Runed bone giant!
You collect a new ingredient: pouch of bone giant dust.
I didn't mean to hits Runed bone giant for 4890 physical, 8 arcane, 3 physical, 3 physical, 18044 physical (22950 total damage).

I didn't mean to killed Runed bone giant!
[/qoute]

So how can that Bone Giant recover from maiming and then get maimed again without any action from me? Self-mutilation?

PS if the numbers look high: I'm a Barbarian @ lvl 88 of the Infinite Dungeon...

I'd imagine that's just the log being out of order. The next line is you getting a critical hit - can you cause maiming on criticals?

Yes I can! Technique/Executioner, 6/6 in Sever.

So the log's out of order - I take it the log doesn't use timestamps (or 'turn-stamps') to sort it's messages before displaying?

No, it's the execution order. The critical hit message isn't displayed until after the critical hit finishes happening - but since the attack triggered a maiming, the maiming resolves before it finishes the critical hit.
And then I think all the damage is specifically delayed so it all appears on one line at the end, instead of piecemeal after every action.