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.