go get fails with asm: "".bitlen: invalid instruction: 00006

when doing `go get github.com/zentures/encoding`, it fails with:

`
asm: "".bitlen: invalid instruction: 00006 (/home/.../go/pkg/mod/github.com/zentures/encoding@v0.0.0-20171223221521-b90e310a0325/bitlen_amd64.s:6)	JEQ	Z1
asm: assembly failed
`
Ubuntu 21.10 machine