firstmergecache: ignore permission and OS errors when writing This cache is related to the obshashrange one and we update it lazily by default. This can be an issue when pulling locally from a read only repository that was not configured for a more aggressive cache warming. The raised permission error was uncaught and could crash the whole process. Errors during cache update should not block Mercurial operations.

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#!/bin/sh

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sleep 5

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echo "new desc" >> $1