The package highlight is amongst the ones failing often in the staging process.
Retriggering (sometimes 5 times) usually gets the package built again (luckily,
it is a rather short build time, so retriggering is a feasible workaround)

It would be great though if this package would build reliably

See for example the jobhist in the devel project:

> osc jobhist devel:tools/highlight openSUSE_Tumbleweed x86_64

or even more often rebuilding in Ring1:

> osc jobhist openSUSE:Factory:Rings:1-MinimalX/highlight standard x86_64