[FS#1543] Many packages in snapshot failing on one build, ok on next but no code changes.

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Rob White (bluewavenet) 

Attached to Project - OpenWrt/LEDE Project
Summary - Many packages in snapshot failing on one build, ok on next but no code changes.
Task Type - Build Failure
Category - Packages
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Critical
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Snapshot/Packages
Occurs on all architectures apparently at random with faillogs.
After next build some that failed will be ok and some that previously built will fail.
eg submit a PR on https://github.com/openwrt/packages
Travis shows fail on dependencies. After next automated build, Travis errors will be different, or if lucky will pass, only to fail again after the next build.
It seems the build system is chasing its tail somehow.

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=1543