warning: methods `purge_from_state`, `decrement`, and `delete` are never used
   --> src/util/aggregators/counter.rs:87:8
    |
59  | impl Counter {
    | ------------ methods in this implementation
...
87  |     fn purge_from_state(&mut self, item: &str) {
    |        ^^^^^^^^^^^^^^^^
...
115 |     fn decrement(&mut self, item: &str) {
    |        ^^^^^^^^^
...
134 |     fn delete(&mut self, item: &str) {
    |        ^^^^^^

warning: associated function `new` is never used
   --> src/extensions/parser.rs:122:12
    |
120 | impl Parser {
    | ----------- associated function in this implementation
121 |     /// Create an instance of a parser
122 |     pub fn new(
    |            ^^^
    |
    = note: `#[warn(dead_code)]` on by default