failing cargo shuttle deploy returns successful exit code

[alsuren]

if I forget to do the lib.crate-type = ["cdylib"] dance, cargo shuttle deploy gives me:

   Compiling reqwest v0.11.9
   Compiling dancelist v0.1.0 (/opt/unveil/crates/dancelist)
    Finished dev [unoptimized + debuginfo] target(s) in 1m 37s

        Project:            dancelist
        Deployment Id:      d3a0e264-f785-42d5-bf85-0d39aba5fb36
        Deployment Status:  ERROR: "a cdylib was not created"
        Host:               dancelist.shuttleapp.rs
        Created At:         2022-04-15 06:38:17.692974962 UTC

but cargo-shuttle's exit code is still "success" ($? == 0) in this case :-( . This means that bash's && and || chains do the wrong thing. This also means you can't build useful CI pipelines, etc.

Originally posted by @alsuren in qwandor/dancelist#2 (comment)