Ignore needless_pass_by_value pedantic clippy lint in test

    warning: this argument is passed by value, but not consumed in the function body
       --> tests/test.rs:101:24
        |
    101 |     fn assert(literal: Literal, expected: &str) {
        |                        ^^^^^^^ help: consider taking a reference instead: `&Literal`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_value
        = note: `-W clippy::needless-pass-by-value` implied by `-W clippy::pedantic`
        = help: to override `-W clippy::pedantic` add `#[allow(clippy::needless_pass_by_value)]`

    warning: this argument is passed by value, but not consumed in the function body
       --> tests/test.rs:149:24
        |
    149 |     fn assert(literal: Literal, expected: &str) {
        |                        ^^^^^^^ help: consider taking a reference instead: `&Literal`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_value

    warning: this argument is passed by value, but not consumed in the function body
       --> tests/test.rs:167:24
        |
    167 |     fn assert(literal: Literal, expected: &str) {
        |                        ^^^^^^^ help: consider taking a reference instead: `&Literal`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_value

    warning: this argument is passed by value, but not consumed in the function body
       --> tests/test.rs:194:24
        |
    194 |     fn assert(literal: Literal, expected: &str) {
        |                        ^^^^^^^ help: consider taking a reference instead: `&Literal`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_value

    warning: this argument is passed by value, but not consumed in the function body
       --> tests/test.rs:265:24
        |
    265 |     fn assert(literal: Literal, expected: &str) {
        |                        ^^^^^^^ help: consider taking a reference instead: `&Literal`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_value

    warning: this argument is passed by value, but not consumed in the function body
       --> tests/test.rs:281:24
        |
    281 |     fn assert(literal: Literal, expected: &str) {
        |                        ^^^^^^^ help: consider taking a reference instead: `&Literal`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_value

    warning: this argument is passed by value, but not consumed in the function body
       --> tests/test.rs:320:24
        |
    320 |     fn assert(literal: Literal, expected: &str) {
        |                        ^^^^^^^ help: consider taking a reference instead: `&Literal`
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_pass_by_value

Author: dtolnay

tests/test.rs

@@ -1,6 +1,7 @@
 #![allow(
     clippy::assertions_on_result_states,
     clippy::items_after_statements,
+    clippy::needless_pass_by_value,
     clippy::needless_raw_string_hashes,
     clippy::non_ascii_literal,
     clippy::octal_escapes