Mimimum Reproducible Example

• Install the Diesel CLI with cargo install diesel_cli
• Initialize the database with diesel setup
• Run the server with cargo run
• Run the tests with cargo test

Tests fail with

191 |     pub fn new<A>(app: A) -> Result<Self>
    |            --- required by a bound in this associated function
192 |     where
193 |         A: IntoTransportLayer,
    |            ^^^^^^^^^^^^^^^^^^ required by this bound in `TestServer::new`

The failing test can be found here