Hmmm... looks like rust isn't quite ready for prime-time -- there is no 'cargo' gentoo ebuild. (Apparently cargo can't be built hermetically?) So I can't repro.
I'm a little worried about how that buffer object came to be. It suggests we're missing some PIPE_BIND_* flags somewhere, or something is creating a buffer without any bind flags set. Can you look at the resource's "bind" property and see what it is?
Hmmm... looks like rust isn't quite ready for prime-time -- there is no 'cargo' gentoo ebuild. (Apparently cargo can't be built hermetically?) So I can't repro.
I'm a little worried about how that buffer object came to be. It suggests we're missing some PIPE_BIND_* flags somewhere, or something is creating a buffer without any bind flags set. Can you look at the resource's "bind" property and see what it is?