Comment 2 for bug 1913852

yes, zlib.a is bad:

root@26d441ac192e:/usr/lib/go-1.13/src/cmd/link# go tool nm /usr/lib/go-1.13/pkg/linux_amd64/compress/zlib.a | head
open /usr/lib/go-1.13/pkg/linux_amd64/compress/zlib.a: unrecognized object file

on the surface it does look like go archive but obviously something is not quite right.
gzip.a in the same directory is fine:

root@26d441ac192e:/usr/lib/go-1.13/src/cmd/link# go tool nm /usr/lib/go-1.13/pkg/linux_amd64/compress/gzip.a | head
         U
         U bufio.(*Reader).Read
         U bufio.(*Reader).ReadByte
         U bufio..inittask
         U compress/flate.(*Writer).Reset
         U compress/flate.(*compressor).close
         U compress/flate.(*compressor).syncFlush
         U compress/flate.(*compressor).write
         U compress/flate..inittask
         U compress/flate.NewReader