Dub Error Message "Invalid variable: DUB"

[Russel Winder]

Hi,

Why on earth is Dub sending out this error message (Invalid variable: DUB) on
GitLab but not on Travis-CI or locally?

OK, that was slightly rhetorical, more reasonably, why is dub sending out this
message at all?

-- 
Russel.
===========================================
Dr Russel Winder      t: +44 20 7585 2200
41 Buckmaster Road    m: +44 7770 465 077
London SW11 1EN, UK   w: www.russel.org.uk

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