# Copyright notices for The Rust Standard Library

## Table of Contents

- Short version for non-lawyers
- Longer version
- In-tree files
- Out-of-tree dependencies

## Short version for non-lawyers

The Rust Standard Library is dual-licensed under Apache 2.0 and MIT terms.

## Longer version

Copyrights in the Rust Standard Library are retained by their contributors. No copyright assignment is required to contribute to the Rust project.

Some files include explicit copyright notices and/or license notices. For full authorship information, see the version control history or https://thanks.rust-lang.org.

Except as otherwise noted (below and/or in individual files), the Rust Standard Library is licensed under the Apache License, Version 2.0 or the MIT license, at your option.

This file describes the copyright and licensing information for the source code within The Rust Project git tree related to the Rust Standard Library, and the third-party dependencies used when building the Rust Standard Library.

## In-tree files

The following licenses cover the in-tree source files that were used in this release:

File/Directory: `.`

License: Apache-2.0 OR MIT

Copyright: The Rust Project Developers (see https://thanks.rust-lang.org)

Exceptions:

File/Directory: `library/backtrace`

License: Apache-2.0 OR MIT

Copyright: 2014 Alex Crichton

Copyright: The Rust Project Developers (see https://thanks.rust-lang.org)

File/Directory: `library/core/src/unicode/unicode_data.rs`

License: Unicode-3.0

Copyright: 1991-2024 Unicode, Inc

File/Directory: `library/std/src/sync/mpmc`

License: Apache-2.0 OR MIT

Copyright: 2019 The Crossbeam Project Developers

Copyright: The Rust Project Developers (see https://thanks.rust-lang.org)

File/Directory: `library/std/src/sys/sync/mutex/fuchsia.rs`

License: BSD-2-Clause AND (Apache-2.0 OR MIT)

Copyright: 2016 The Fuchsia Authors

Copyright: The Rust Project Developers (see https://thanks.rust-lang.org)

## Out-of-tree dependencies

The following licenses cover the out-of-tree crates that were used in the Rust Standard Library in this release: