It's surprising how many bugs can be caught by lints like this, which check for code which is obviously flawed in some way (other examples are unused variables,

It's surprising how many bugs can be caught by lints like this, which check for code which is obviously flawed in some way (other examples are unused variables, dead code, statements which will always crash, statements which will always throw an exception that aren't `throw` or something else where that would be intended)