[Swift-devel] walltime compulsion

[Ben Clifford]

Recent walltime violation commits seem to change the way in which 
applications with unspecified walltimes behave.

They now get this treatment:

> Warning: missing walltime specification for "echo". Assuming 10 minutes.

I don't think it is appropriate to assume that any arbitrary program in 
Swift has a 10 minute maxwalltime, if none is specified.

None should be assumed, and if that means some functionality based on 
having a walltime doesn't do anything for those tasks, then so be it.

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