serde_path_to_error 0.1.11

Path to the element that failed to deserialize
# Serde path to error

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Find out the path at which a deserialization error occurred. This crate provides
a wrapper that works with any existing Serde `Deserializer` and exposes the
chain of field names leading to the error.

serde = "1.0"
serde_path_to_error = "0.1"

use serde::Deserialize;
use std::collections::BTreeMap as Map;

struct Package {
    name: String,
    dependencies: Map<String, Dependency>,

struct Dependency {
    version: String,

fn main() {
    let j = r#"{
        "name": "demo",
        "dependencies": {
            "serde": {
                "version": 1

    // Some Deserializer.
    let jd = &mut serde_json::Deserializer::from_str(j);

    let result: Result<Package, _> = serde_path_to_error::deserialize(jd);
    match result {
        Ok(_) => panic!("expected a type error"),
        Err(err) => {
            let path = err.path().to_string();
            assert_eq!(path, "dependencies.serde.version");


#### License

Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.


Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.