mod=example.com/patherrors
dir=x
base=none
success=false
-- want --
# diagnostics
example.com/y: module path must end with "x", since it is in subdirectory "x"

# summary
Suggested version: v0.1.0
-- .mod --
module example.com/patherrors
-- .git/HEAD --
-- x/go.mod --
module example.com/y

go 1.12