Using Halt does not work well with compose

[thec0keman]

If service A calls service B with compose, and service B uses halt!, the errors from B are not passed to A.

I think this may be because the catch for the strict error exception doesn't handle anything. Perhaps it would work to use the ActiveInteraction Interrupt exception instead, since this is properly handled?

[antulik]

Good find. We potentially could use Interrupt, there are two parts that concern me:

• exceptions shouldn't be used for control flow, as they are slower
• my understanding getting backtrace is also heavy operation, which we don't need in halt behaviour.

if your PR AaronLasseigne/active_interaction#486 won't be accepted, I think exception is the only way to do it.