Advice to add a static bound

The compiler is gradually getting better about this, but when it suggests to use a &'static or that a lifetime needs to outlive 'static, it usually actually means either

• You're in a context where non-'static references and other non-static types aren't allowed
• You should add a lifetime parameter somewhere

Rather than try to cook up my own example, I'll just link to this issue. Although it's closed, there's still room for improvement in some of the examples within.