"Invalid char ':'" error when building with GO111MODULE=on #39
Description
Go v1.12.4 on macOS High Sierra.
When trying to build caddy v1.0.0-beta1 or master with GO111MODULE=on, go fails to extract this plugin due to colons in filenames:
go: extracting github.com/pyed/ipfilter v1.1.1
-> unzip /Users/username/pkg/mod/cache/download/github.com/pyed/ipfilter/@v/v1.1.1.zip: malformed file path "testdata/blacklist/1234/abcd/1234:abcd::1": invalid char ':'
build github.com/mholt/caddy/caddy: cannot load github.com/pyed/ipfilter: unzip /Users/username/pkg/mod/cache/download/github.com/pyed/ipfilter/@v/v1.1.1.zip: malformed file path "testdata/blacklist/1234/abcd/1234:abcd::1": invalid char ':'
2019/04/16 18:26:12 exit status 1
exit status 1
It seems the Go team do not plan to allow colons in filenames, as it's a reserved character on Windows.