Answers

1. Directly connecting to a database with Rust reduces the amount of code we must write as we do not have to inspect the Python objects that are returned from the Python database call. We also do not have to package data into Python objects before inserting them into the database. This essentially removes a whole layer of code that we must write when interacting with the database.
2. If someone gets hold of our image, they can access the layers of the build. As a result, they can access the arguments that have been passed into the build. This will mean that they can see the credentials we use to log in.
3. We used the diesel crate to connect to the database and automatically print the schemas and models based on the database it connects to. We can do this repeatedly to keep up to date with new database migrations.  
4. We must remember that our Rust database package is an appendage to our Python web application. Our Python web application has already loaded...