
warning: bound is defined in more than one place --> serde/src/ser/fmt.rs:77:33 | 77 | fn serialize_newtype_struct<T: ?Sized>(self, _name: &'static str, value: &T) -> fmt::Result | ^ 78 | where 79 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations = note: `-W clippy::multiple-bound-locations` implied by `-W clippy::all` = help: to override `-W clippy::all` add `#[allow(clippy::multiple_bound_locations)]` warning: bound is defined in more than one place --> serde/src/ser/fmt.rs:92:23 | 92 | fn serialize_some<T: ?Sized>(self, _value: &T) -> fmt::Result | ^ 93 | where 94 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/fmt.rs:103:34 | 103 | fn serialize_newtype_variant<T: ?Sized>( | ^ ... 111 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/fmt.rs:164:20 | 164 | fn collect_str<T: ?Sized>(self, value: &T) -> fmt::Result | ^ 165 | where 166 | T: Display, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/impossible.rs:75:26 | 75 | fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error> | ^ 76 | where 77 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/impossible.rs:95:26 | 95 | fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error> | ^ 96 | where 97 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/impossible.rs:115:24 | 115 | fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error> | ^ 116 | where 117 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/impossible.rs:135:24 | 135 | fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error> | ^ 136 | where 137 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/impossible.rs:155:22 | 155 | fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), Error> | ^ 156 | where 157 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/impossible.rs:163:24 | 163 | fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Error> | ^ 164 | where 165 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/impossible.rs:183:24 | 183 | fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), Error> | ^ 184 | where 185 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/impossible.rs:204:24 | 204 | fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), Error> | ^ 205 | where 206 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:799:23 | 799 | fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error> | ^ 800 | where 801 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:894:33 | 894 | fn serialize_newtype_struct<T: ?Sized>( | ^ ... 900 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:928:34 | 928 | fn serialize_newtype_variant<T: ?Sized>( | ^ ... 936 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1349:20 | 1349 | fn collect_str<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error> | ^ 1350 | where 1351 | T: Display, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1496:26 | 1496 | fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> | ^ 1497 | where 1498 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1596:26 | 1596 | fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> | ^ 1597 | where 1598 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1641:24 | 1641 | fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> | ^ 1642 | where 1643 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1699:24 | 1699 | fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> | ^ 1700 | where 1701 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1770:22 | 1770 | fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), Self::Error> | ^ 1771 | where 1772 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1780:24 | 1780 | fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> | ^ 1781 | where 1782 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1801:24 | 1801 | fn serialize_entry<K: ?Sized, V: ?Sized>( | ^ ... 1807 | K: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1801:35 | 1801 | fn serialize_entry<K: ?Sized, V: ?Sized>( | ^ ... 1808 | V: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1859:24 | 1859 | fn serialize_field<T: ?Sized>( | ^ ... 1865 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/ser/mod.rs:1925:24 | 1925 | fn serialize_field<T: ?Sized>( | ^ ... 1931 | T: Serialize; | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:177:23 | 177 | fn serialize_some<T: ?Sized>(self, _: &T) -> Result<Self::Ok, Self::Error> | ^ 178 | where 179 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:208:33 | 208 | fn serialize_newtype_struct<T: ?Sized>( | ^ ... 214 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:219:34 | 219 | fn serialize_newtype_variant<T: ?Sized>( | ^ ... 227 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:367:28 | 367 | fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), M::Error> | ^ 368 | where 369 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:407:28 | 407 | fn serialize_field<T: ?Sized>( | ^ ... 413 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:638:27 | 638 | fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Content, E> | ^ 639 | where 640 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:662:37 | 662 | fn serialize_newtype_struct<T: ?Sized>( | ^ ... 668 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:676:38 | 676 | fn serialize_newtype_variant<T: ?Sized>( | ^ ... 684 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:785:30 | 785 | fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), E> | ^ 786 | where 787 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:811:30 | 811 | fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), E> | ^ 812 | where 813 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:838:28 | 838 | fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), E> | ^ 839 | where 840 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:867:28 | 867 | fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), E> | ^ 868 | where 869 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:899:26 | 899 | fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), E> | ^ 900 | where 901 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:908:28 | 908 | fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), E> | ^ 909 | where 910 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:925:28 | 925 | fn serialize_entry<K: ?Sized, V: ?Sized>(&mut self, key: &K, value: &V) -> Result<(), E> | ^ 926 | where 927 | K: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:925:39 | 925 | fn serialize_entry<K: ?Sized, V: ?Sized>(&mut self, key: &K, value: &V) -> Result<(), E> | ^ ... 928 | V: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:950:28 | 950 | fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), E> | ^ 951 | where 952 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:979:28 | 979 | fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), E> | ^ 980 | where 981 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1091:23 | 1091 | fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error> | ^ 1092 | where 1093 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1115:33 | 1115 | fn serialize_newtype_struct<T: ?Sized>( | ^ ... 1121 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1126:34 | 1126 | fn serialize_newtype_variant<T: ?Sized>( | ^ ... 1134 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1205:22 | 1205 | fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), Self::Error> | ^ 1206 | where 1207 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1212:24 | 1212 | fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> | ^ 1213 | where 1214 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1219:24 | 1219 | fn serialize_entry<K: ?Sized, V: ?Sized>( | ^ ... 1225 | K: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1219:35 | 1219 | fn serialize_entry<K: ?Sized, V: ?Sized>( | ^ ... 1226 | V: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1247:24 | 1247 | fn serialize_field<T: ?Sized>( | ^ ... 1253 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1292:24 | 1292 | fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error> | ^ 1293 | where 1294 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations warning: bound is defined in more than one place --> serde/src/private/ser.rs:1338:24 | 1338 | fn serialize_field<T: ?Sized>( | ^ ... 1344 | T: Serialize, | ^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#multiple_bound_locations
Serde

Serde is a framework for serializing and deserializing Rust data structures efficiently and generically.
You may be looking for:
- An overview of Serde
- Data formats supported by Serde
- Setting up
#[derive(Serialize, Deserialize)]
- Examples
- API documentation
- Release notes
Serde in action
Click to show Cargo.toml. Run this code in the playground.
[dependencies]
# The core APIs, including the Serialize and Deserialize traits. Always
# required when using Serde. The "derive" feature is only required when
# using #[derive(Serialize, Deserialize)] to make Serde work with structs
# and enums defined in your crate.
serde = { version = "1.0", features = ["derive"] }
# Each data format lives in its own crate; the sample code below uses JSON
# but you may be using a different one.
serde_json = "1.0"
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize, Debug)]
struct Point {
x: i32,
y: i32,
}
fn main() {
let point = Point { x: 1, y: 2 };
// Convert the Point to a JSON string.
let serialized = serde_json::to_string(&point).unwrap();
// Prints serialized = {"x":1,"y":2}
println!("serialized = {}", serialized);
// Convert the JSON string back to a Point.
let deserialized: Point = serde_json::from_str(&serialized).unwrap();
// Prints deserialized = Point { x: 1, y: 2 }
println!("deserialized = {:?}", deserialized);
}
Getting help
Serde is one of the most widely used Rust libraries so any place that Rustaceans congregate will be able to help you out. For chat, consider trying the #rust-questions or #rust-beginners channels of the unofficial community Discord (invite: https://discord.gg/rust-lang-community), the #rust-usage or #beginners channels of the official Rust Project Discord (invite: https://discord.gg/rust-lang), or the #general stream in Zulip. For asynchronous, consider the [rust] tag on StackOverflow, the /r/rust subreddit which has a pinned weekly easy questions post, or the Rust Discourse forum. It's acceptable to file a support issue in this repo but they tend not to get as many eyes as any of the above and may get closed without a response after some time.
License
Licensed under either of Apache License, Version 2.0 or MIT license at your option.Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Serde by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.