warning: method `is_sign_negative` is never used
       --> src/lexical/num.rs:251:8
        |
    175 | pub trait Float: Number {
        |           ----- method in this trait
    ...
    251 |     fn is_sign_negative(self) -> bool;
        |        ^^^^^^^^^^^^^^^^
        |
        = note: `#[warn(dead_code)]` on by default

rust-lang/rust-clippy#12257

    warning: current MSRV (Minimum Supported Rust Version) is `1.56.0` but this item is stable since `1.71.0`
        --> tests/test.rs:2500:25
         |
    2500 |         assert_ne!(rand.hash_one(k1), rand.hash_one(k2));
         |                         ^^^^^^^^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#incompatible_msrv
         = note: `-W clippy::incompatible-msrv` implied by `-W clippy::all`
         = help: to override `-W clippy::all` add `#[allow(clippy::incompatible_msrv)]`

    warning: current MSRV (Minimum Supported Rust Version) is `1.56.0` but this item is stable since `1.71.0`
        --> tests/test.rs:2500:44
         |
    2500 |         assert_ne!(rand.hash_one(k1), rand.hash_one(k2));
         |                                            ^^^^^^^^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#incompatible_msrv

    warning: current MSRV (Minimum Supported Rust Version) is `1.56.0` but this item is stable since `1.71.0`
        --> tests/test.rs:2503:25
         |
    2503 |         assert_eq!(rand.hash_one(k1), rand.hash_one(k2));
         |                         ^^^^^^^^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#incompatible_msrv

    warning: current MSRV (Minimum Supported Rust Version) is `1.56.0` but this item is stable since `1.71.0`
        --> tests/test.rs:2503:44
         |
    2503 |         assert_eq!(rand.hash_one(k1), rand.hash_one(k2));
         |                                            ^^^^^^^^^^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#incompatible_msrv

rust-lang/rust#117772

    warning: the item `String` is imported redundantly
       --> src/de.rs:8:5
        |
    8   | use alloc::string::String;
        |     ^^^^^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here
        |
        = note: `#[warn(unused_imports)]` on by default

    warning: the item `Vec` is imported redundantly
       --> src/de.rs:9:5
        |
    9   | use alloc::vec::Vec;
        |     ^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `Vec` is already defined here

    warning: the item `Box` is imported redundantly
       --> src/error.rs:4:5
        |
    4   | use alloc::boxed::Box;
        |     ^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `Box` is already defined here

    warning: the item `String` is imported redundantly
       --> src/error.rs:5:21
        |
    5   | use alloc::string::{String, ToString};
        |                     ^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here

    warning: the item `ToString` is imported redundantly
       --> src/error.rs:5:29
        |
    5   | use alloc::string::{String, ToString};
        |                             ^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `ToString` is already defined here

    warning: the item `String` is imported redundantly
       --> src/map.rs:10:5
        |
    10  | use alloc::string::String;
        |     ^^^^^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here

    warning: the item `indexmap` is imported redundantly
      --> src/map.rs:23:16
       |
    23 | use indexmap::{self, IndexMap};
       |                ^^^^ the item `indexmap` is already defined here
       |
       = note: `#[warn(unused_imports)]` on by default

    warning: the item `String` is imported redundantly
       --> src/ser.rs:5:21
        |
    5   | use alloc::string::{String, ToString};
        |                     ^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here

    warning: the item `ToString` is imported redundantly
       --> src/ser.rs:5:29
        |
    5   | use alloc::string::{String, ToString};
        |                             ^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `ToString` is already defined here

    warning: the item `Vec` is imported redundantly
       --> src/ser.rs:6:5
        |
    6   | use alloc::vec::Vec;
        |     ^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `Vec` is already defined here

    warning: the item `String` is imported redundantly
       --> src/value/mod.rs:95:5
        |
    95  | use alloc::string::String;
        |     ^^^^^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here

    warning: the item `Vec` is imported redundantly
       --> src/value/mod.rs:96:5
        |
    96  | use alloc::vec::Vec;
        |     ^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `Vec` is already defined here

    warning: the item `ToOwned` is imported redundantly
       --> src/value/de.rs:5:26
        |
    5   | use alloc::borrow::{Cow, ToOwned};
        |                          ^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `ToOwned` is already defined here

    warning: the item `String` is imported redundantly
       --> src/value/de.rs:6:5
        |
    6   | use alloc::string::String;
        |     ^^^^^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here

    warning: the item `Vec` is imported redundantly
       --> src/value/de.rs:9:24
        |
    9   | use alloc::vec::{self, Vec};
        |                        ^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `Vec` is already defined here

    warning: the item `String` is imported redundantly
       --> src/value/from.rs:5:21
        |
    5   | use alloc::string::{String, ToString};
        |                     ^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here

    warning: the item `ToString` is imported redundantly
       --> src/value/from.rs:5:29
        |
    5   | use alloc::string::{String, ToString};
        |                             ^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `ToString` is already defined here

    warning: the item `Vec` is imported redundantly
       --> src/value/from.rs:6:5
        |
    6   | use alloc::vec::Vec;
        |     ^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `Vec` is already defined here

    warning: the item `ToOwned` is imported redundantly
       --> src/value/index.rs:3:5
        |
    3   | use alloc::borrow::ToOwned;
        |     ^^^^^^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `ToOwned` is already defined here

    warning: the item `String` is imported redundantly
       --> src/value/index.rs:4:5
        |
    4   | use alloc::string::String;
        |     ^^^^^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here

    warning: the item `String` is imported redundantly
       --> src/value/partial_eq.rs:2:5
        |
    2   | use alloc::string::String;
        |     ^^^^^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here

    warning: the item `ToOwned` is imported redundantly
       --> src/value/ser.rs:4:5
        |
    4   | use alloc::borrow::ToOwned;
        |     ^^^^^^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `ToOwned` is already defined here

    warning: the item `String` is imported redundantly
       --> src/value/ser.rs:5:21
        |
    5   | use alloc::string::{String, ToString};
        |                     ^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `String` is already defined here

    warning: the item `ToString` is imported redundantly
       --> src/value/ser.rs:5:29
        |
    5   | use alloc::string::{String, ToString};
        |                             ^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `ToString` is already defined here

    warning: the item `Vec` is imported redundantly
       --> src/value/ser.rs:6:5
        |
    6   | use alloc::vec::Vec;
        |     ^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `Vec` is already defined here

    warning: the item `Vec` is imported redundantly
       --> src/read.rs:2:5
        |
    2   | use alloc::vec::Vec;
        |     ^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `Vec` is already defined here

    warning: the item `ToString` is imported redundantly
       --> tests/test.rs:46:5
        |
    46  | use std::string::ToString;
        |     ^^^^^^^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `ToString` is already defined here
        |
        = note: `#[warn(unused_imports)]` on by default

    warning: the item `Vec` is imported redundantly
       --> tests/../src/lexical/bignum.rs:6:5
        |
    6   | use alloc::vec::Vec;
        |     ^^^^^^^^^^^^^^^
        |
       ::: nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/prelude/mod.rs:125:13
        |
    125 |     pub use super::v1::*;
        |             --------- the item `Vec` is already defined here
        |
        = note: `#[warn(unused_imports)]` on by default