upgrade_checks fails on stable/10 in parallel builds?

[Dmitry Morozovsky]

Colleagues,

after upgrading my builder to stable/10 I'm getting consistent errors like

--- upgrade_checks ---
A failure has been detected in another branch of the parallel make

make[1]: stopped in /FreeBSD/pristine/src.9.2
*** [upgrade_checks] Error code 2

make: stopped in /FreeBSD/pristine/src.9.2
1 error

make: stopped in /FreeBSD/pristine/src.9.2

in case of using -j when invoking buildworld

make -DNO_CLEAN upgrade_checks (without -j) rebuilds (f)make fine, and then 
parallel buildworld seems to work fine.

Any thoughts?  I'd tried to look at Makefiles, but lost in the middle ;)

Thanks!

-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck at FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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