Illegal Instruction on Pi Zero with Racket 9.1

Has anyone had success running the "Linux (Arm32/ARMv6)" version of 9.1 on a Raspberry Pi Zero W?

I am seeing "illegal instruction", which implies that the binary isn't really compiled for ARMv6.

Follow up: both 'file' and 'readelf' indicate it is "ARM", so I'm not sure why it won't run.