Fixed in chrpath-0.12-alt1. 

but why it should break if the patient doesn't need curing?

if it's a shell script (not ELF 32-bit LSB, okay) -- you'd just ignore it and
not bail out.

otherwise you require unneeded effort of choosing only ELF in a typical
binary/script mix being processed.

okay, what about /dev/null?

So I asked what about /dev/null.
Anyway, use shell smile.  It lets you take things easy.
chrpath -d %buildroot%_bindir/* ||:

Closed so far (see my previous comments here).

so be it