Preventing leaks is explicitly not a goal of rust and making lifetimes correct often involves giving up and making unnecessary static lifetimes. I see this all the time in async rpc stream stuff.
That is, they aren't impossible and you'll eventually have to fight against one nasty one in your job, but it's far better than without a GC or borrowck.
> As a reference lifetime 'static indicates that the data pointed to by the reference lives for the remaining lifetime of the running program.
I don't know if `unbounded` would immediately be understood by someone new to Rust, but it captures that `T: 'static` is a negating assertion. I.e. it largely says what it can't be.