Failed build of Go package for Debian

$ ./debian/rules build
dh build --buildsystem=golang --with=golang --builddirectory=.
   dh_update_autotools_config -O--buildsystem=golang -O--builddirectory=.
   dh_autoreconf -O--buildsystem=golang -O--builddirectory=.
   dh_auto_configure -O--buildsystem=golang -O--builddirectory=.
dh_auto_configure: warning: "github.com/cilium/ebpf" is already installed. Please check for circular dependencies.

   debian/rules execute_before_dh_auto_build
make[1]: Entering directory '/srv/build/pwru/clean/golang-github-cilium-ebpf'
env > /tmp/before-my-build.env
make[1]: Leaving directory '/srv/build/pwru/clean/golang-github-cilium-ebpf'
   dh_auto_build -O--buildsystem=golang -O--builddirectory=.
        cd obj-x86_64-linux-gnu && go install -trimpath -v -p 1 github.com/cilium/ebpf github.com/cilium/ebpf/asm github.com/cilium/ebpf/btf github.com/cilium/ebpf/cmd/bpf2go github.com/cilium/ebpf/features github.com/cilium/ebpf/internal github.com/cilium/ebpf/internal/cmd/gentypes github.com/cilium/ebpf/internal/epoll github.com/cilium/ebpf/internal/kconfig github.com/cilium/ebpf/internal/sys github.com/cilium/ebpf/internal/testutils github.com/cilium/ebpf/internal/testutils/fdtrace github.com/cilium/ebpf/internal/tracefs github.com/cilium/ebpf/internal/unix github.com/cilium/ebpf/link github.com/cilium/ebpf/perf github.com/cilium/ebpf/ringbuf github.com/cilium/ebpf/rlimit
src/github.com/cilium/ebpf/cmd/bpf2go/output.go:19:12: pattern output.tpl: no matching files found