mes-0.8.33 is not a library.
mes — the mesofact dev toolchain.
This is the entry point and nothing else. The CLI itself is
[mesofact_dev::cli], which is where it lives so that the definition sits
next to the dev-tier affordances it drives rather than in a bin target that
nothing can call into. See ../Cargo.toml for why the command and the
library carry different names.