When -i (install) flag is passed to `go build`, it attempts
to install dependencies of the target.
This will usually fail during cross-compilation due to GOROOT being
not writeable to non-root users:
runtime/internal/sys
go build runtime/internal/sys: mkdir /usr/lib/go/pkg/linux_arm: permission denied
Installing dependencies makes no sense in recent Go versions,
because compilation is cached anyway (see `go help cache`).
