`try_reserve` and `try_reserve_exact` docs refer to calling `reserve` and `reserve_exact`. `try_reserve_exact` example uses `try_reserve` method instead of `try_reserve_exact`.
`try_reserve` and `try_reserve_exact` docs refer to calling `reserve` and `reserve_exact`. `try_reserve_exact` example uses `try_reserve` method instead of `try_reserve_exact`.