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tracing/tracing-subscriber
Jonas Platte 44d355800f subscriber: Stop using prelude imports in doctests (#1422)
## Motivation

I dislike using `*` imports in my code, so I'm not using prelude modules
provided by libraries. With the way the examples in the
`tracing-subscriber` docs are currently set up, there is no hint on
where some methods are coming from. Just removing the prelude import
unfortunately doesn't lead to a solution. The compiler prefers the
prelude re-export:

```
    = help: items from traits can only be used if the trait is in scope
help: the following trait is implemented but not in scope; perhaps add a `use` for it:
    |
3   | use crate::tracing_subscriber::prelude::__tracing_subscriber_SubscriberExt;
    |
```

## Solution

Use the traits directly in the documentation examples.

Since the compiler hints around this are currently very bad, it's good
to have a hint where methods in doc examples could come from in there,
for users who prefer not using the prelude.
2021-06-07 10:15:01 -07:00
..

Tracing — Structured, application-level diagnostics

tracing-subscriber

Utilities for implementing and composing tracing subscribers.

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Compiler support: requires rustc 1.42+

Supported Rust Versions

Tracing is built against the latest stable release. The minimum supported version is 1.42. The current Tracing version is not guaranteed to build on Rust versions earlier than the minimum supported version.

Tracing follows the same compiler support policies as the rest of the Tokio project. The current stable Rust compiler and the three most recent minor versions before it will always be supported. For example, if the current stable compiler version is 1.45, the minimum supported version will not be increased past 1.42, three minor versions prior. Increasing the minimum supported compiler version is not considered a semver breaking change as long as doing so complies with this policy.

License

This project is licensed under the MIT license.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Tracing by you, shall be licensed as MIT, without any additional terms or conditions.