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Allan Odgaard ffba605cc1 Do not call abort for posix_spawn related failures
Based on crash reports, some of these functions do fail in practice, mainly due to “too many open file descriptors”, in which case we should let the io::spawn function fail, rather than crash the program.

The io::spawn function is used (amongst others) to update SCM status, so a failure is not always worth notifying the user about (beyond logging an error).
2018-11-17 11:35:40 +07:00
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