[pkg-go] Bug#947996: (no subject)

[Daniel Swarbrick]

I'm fairly sure this error disappear if you attempt a rebuild now.

Earlier versions of dh-golang disabled GOCACHE, and Go 1.12 and later 
requires that the GOCACHE env var point to a writable directory. This is 
AFAIK now the case in the current dh-golang package.

If the error still occurs, can you post a bit more context of the 
failure? e.g., is it occurring in the build or test phase?