For a slightly different take on this problem, check out Wire (https://github.com/google/wire).
If I miss something, I'd much rather know when I try to compile instead of waiting 'til a specific code path that uses a missing dependency fails.
The documentation for Fx, along with nearly all the applications I saw internally, use the dependency injection container only in main - once the application starts successfully, there's no more interaction with the container. For Uber at the time, this struck a useful balance between safety and the difficulty of distributing yet another versioned code gen tool to thousands of repositories.