Compile error: std::error::Error is not implemented about serde-json-core HOT 7 CLOSED

I suspect this may be related to MSRV (minimum supported Rust version). What rustc version are you using? Currently, I believe we only support 1.51 and above.

Edit:

You need to enable the std feature for serde-json-core to implement std::error:Error for the type. Check your Cargo.toml file.

from serde-json-core.

Similar issue here for the latest version "0.2.0".

from serde-json-core.

I'm getting the same thing for version 0.4.0.

from serde-json-core.

Oh, OK, that would be it, I was trying to build without std. 👍

from serde-json-core.

Closing then. I adapted the title for better discoverability.
For future reference: per default this crate is no_std-compatible, which per definition excludes implementing std::error::Error.
If you need std::error::Error, activate the std feature for this crate in your Cargo.toml file.

from serde-json-core.

I dont want the std::error. im trying to use no-std. and i still get this error.

serde = { version = "1", default-features = false, features = ["derive"] }
serde-json-core = { version = "0.4", default-features = false, features = ["heapless"] }

is in my cargo.toml ... is there something missing?

from serde-json-core.

This can be a result of some of your other dependencies if you're using an older version of Cargo. Cargo's original feature resolver had a bug where dev-dependencies and such could enable features on other crates. Check out https://doc.rust-lang.org/edition-guide/rust-2021/default-cargo-resolver.html

Also, check out cargo tree -e features to look at what features are actually enabled.

from serde-json-core.