Apache License 2.0

Permissions

• Commercial use
• Modification
• Distribution
• Patent use
• Private use

Limitations

• Trademark use
• Liability
• Warranty

Conditions

• License and copyright notice
• State changes

Short version for non-lawyers:

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


Longer version:

Copyrights in the Rust project 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), Rust is
licensed under the Apache License, Version 2.0 <LICENSE-APACHE> or
<http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
<LICENSE-MIT> or <http://opensource.org/licenses/MIT>, at your option.


The Rust Project includes packages written by third parties.
The following third party packages are included, and carry
their own copyright notices and license terms:

* LLVM, located in src/llvm-project, is licensed under the following
 terms.

 ==============================================================================
 The LLVM Project is under the Apache License v2.0 with LLVM Exceptions:
 ==============================================================================

 Apache License
 Version 2.0, January 2004
 http://www.apache.org/licenses/

 TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

 1. Definitions.

 "License" shall mean the terms and conditions for use, reproduction,
 and distribution as defined by Sections 1 through 9 of this document.

 "Licensor" shall mean the copyright owner or entity authorized by
 the copyright owner that is granting the License.

 "Legal Entity" shall mean the union of the acting entity and all
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 "control" means (i) the power, direct or indirect, to cause the
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 otherwise, or (ii) ownership of fifty percent (50%) or more of the
 outstanding shares, or (iii) beneficial ownership of such entity.

 "You" (or "Your") shall mean an individual or Legal Entity
 exercising permissions granted by this License.

 "Source" form shall mean the preferred form for making modifications,
 including but not limited to software source code, documentation
 source, and configuration files.

 "Object" form shall mean any form resulting from mechanical
 transformation or translation of a Source form, including but
 not limited to compiled object code, generated documentation,
 and conversions to other media types.

 "Work" shall mean the work of authorship, whether in Source or
 Object form, made available under the License, as indicated by a
 copyright notice that is included in or attached to the work
 (an example is provided in the Appendix below).

 "Derivative Works" shall mean any work, whether in Source or Object
 form, that is based on (or derived from) the Work and for which the
 editorial revisions, annotations, elaborations, or other modifications
 represent, as a whole, an original work of authorship. For the purposes
 of this License, Derivative Works shall not include works that remain
 separable from, or merely link (or bind by name) to the interfaces of,
 the Work and Derivative Works thereof.

 "Contribution" shall mean any work of authorship, including
 the original version of the Work and any modifications or additions
 to that Work or Derivative Works thereof, that is intentionally
 submitted to Licensor for inclusion in the Work by the copyright owner
 or by an individual or Legal Entity authorized to submit on behalf of
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 to the Licensor or its representatives, including but not limited to
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 Licensor for the purpose of discussing and improving the Work, but
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 designated in writing by the copyright owner as "Not a Contribution."

 "Contributor" shall mean Licensor and any individual or Legal Entity
 on behalf of whom a Contribution has been received by Licensor and
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 2. Grant of Copyright License. Subject to the terms and conditions of
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 copyright license to reproduce, prepare Derivative Works of,
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 3. Grant of Patent License. Subject to the terms and conditions of
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 worldwide, non-exclusive, no-charge, royalty-free, irrevocable
 (except as stated in this section) patent license to make, have made,
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 where such license applies only to those patent claims licensable
 by such Contributor that are necessarily infringed by their
 Contribution(s) alone or by combination of their Contribution(s)
 with the Work to which such Contribution(s) was submitted. If You
 institute patent litigation against any entity (including a
 cross-claim or counterclaim in a lawsuit) alleging that the Work
 or a Contribution incorporated within the Work constitutes direct
 or contributory patent infringement, then any patent licenses
 granted to You under this License for that Work shall terminate
 as of the date such litigation is filed.

 4. Redistribution. You may reproduce and distribute copies of the
 Work or Derivative Works thereof in any medium, with or without
 modifications, and in Source or Object form, provided that You
 meet the following conditions:

 (a) You must give any other recipients of the Work or
 Derivative Works a copy of this License; and

 (b) You must cause any modified files to carry prominent notices
 stating that You changed the files; and

 (c) You must retain, in the Source form of any Derivative Works
 that You distribute, all copyright, patent, trademark, and
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 excluding those notices that do not pertain to any part of
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 (d) If the Work includes a "NOTICE" text file as part of its
 distribution, then any Derivative Works that You distribute must
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 within such NOTICE file, excluding those notices that do not
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 of the following places: within a NOTICE text file distributed
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 documentation, if provided along with the Derivative Works; or,
 within a display generated by the Derivative Works, if and
 wherever such third-party notices normally appear. The contents
 of the NOTICE file are for informational purposes only and
 do not modify the License. You may add Your own attribution
 notices within Derivative Works that You distribute, alongside
 or as an addendum to the NOTICE text from the Work, provided
 that such additional attribution notices cannot be construed
 as modifying the License.

 You may add Your own copyright statement to Your modifications and
 may provide additional or different license terms and conditions
 for use, reproduction, or distribution of Your modifications, or
 for any such Derivative Works as a whole, provided Your use,
 reproduction, and distribution of the Work otherwise complies with
 the conditions stated in this License.

 5. Submission of Contributions. Unless You explicitly state otherwise,
 any Contribution intentionally submitted for inclusion in the Work
 by You to the Licensor shall be under the terms and conditions of
 this License, without any additional terms or conditions.
 Notwithstanding the above, nothing herein shall supersede or modify
 the terms of any separate license agreement you may have executed
 with Licensor regarding such Contributions.

 6. Trademarks. This License does not grant permission to use the trade
 names, trademarks, service marks, or product names of the Licensor,
 except as required for reasonable and customary use in describing the
 origin of the Work and reproducing the content of the NOTICE file.

 7. Disclaimer of Warranty. Unless required by applicable law or
 agreed to in writing, Licensor provides the Work (and each
 Contributor provides its Contributions) on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 implied, including, without limitation, any warranties or conditions
 of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
 PARTICULAR PURPOSE. You are solely responsible for determining the
 appropriateness of using or redistributing the Work and assume any
 risks associated with Your exercise of permissions under this License.

 8. Limitation of Liability. In no event and under no legal theory,
 whether in tort (including negligence), contract, or otherwise,
 unless required by applicable law (such as deliberate and grossly
 negligent acts) or agreed to in writing, shall any Contributor be
 liable to You for damages, including any direct, indirect, special,
 incidental, or consequential damages of any character arising as a
 result of this License or out of the use or inability to use the
 Work (including but not limited to damages for loss of goodwill,
 work stoppage, computer failure or malfunction, or any and all
 other commercial damages or losses), even if such Contributor
 has been advised of the possibility of such damages.

 9. Accepting Warranty or Additional Liability. While redistributing
 the Work or Derivative Works thereof, You may choose to offer,
 and charge a fee for, acceptance of support, warranty, indemnity,
 or other liability obligations and/or rights consistent with this
 License. However, in accepting such obligations, You may act only
 on Your own behalf and on Your sole responsibility, not on behalf
 of any other Contributor, and only if You agree to indemnify,
 defend, and hold each Contributor harmless for any liability
 incurred by, or claims asserted against, such Contributor by reason
 of your accepting any such warranty or additional liability.

 END OF TERMS AND CONDITIONS

 APPENDIX: How to apply the Apache License to your work.

 To apply the Apache License to your work, attach the following
 boilerplate notice, with the fields enclosed by brackets "[]"
 replaced with your own identifying information. (Don't include
 the brackets!) The text should be enclosed in the appropriate
 comment syntax for the file format. We also recommend that a
 file or class name and description of purpose be included on the
 same "printed page" as the copyright notice for easier
 identification within third-party archives.

 Copyright [yyyy] [name of copyright owner]

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.


 ---- LLVM Exceptions to the Apache 2.0 License ----

 As an exception, if, as a result of your compiling your source code, portions
 of this Software are embedded into an Object form of such source code, you
 may redistribute such embedded portions in such Object form without complying
 with the conditions of Sections 4(a), 4(b) and 4(d) of the License.

 In addition, if you combine or link compiled forms of this Software with
 software that is licensed under the GPLv2 ("Combined Software") and if a
 court of competent jurisdiction determines that the patent provision (Section
 3), the indemnity provision (Section 9) or other Section of the License
 conflicts with the conditions of the GPLv2, you may retroactively and
 prospectively choose to deem waived or otherwise exclude such Section(s) of
 the License, but only in their entirety and only with respect to the Combined
 Software.

 ==============================================================================
 Software from third parties included in the LLVM Project:
 ==============================================================================
 The LLVM Project contains third party software which is under different license
 terms. All such code will be identified clearly using at least one of two
 mechanisms:
 1) It will be in a separate directory tree with its own `LICENSE.txt` or
 `LICENSE` file at the top containing the specific license and restrictions
 which apply to that software, or
 2) It will contain specific license and restriction terms at the top of every
 file.

 ==============================================================================
 Legacy LLVM License (https://llvm.org/docs/DeveloperPolicy.html#legacy):
 ==============================================================================
 University of Illinois/NCSA
 Open Source License

 Copyright (c) 2003-2019 University of Illinois at Urbana-Champaign.
 All rights reserved.

 Developed by:

 LLVM Team

 University of Illinois at Urbana-Champaign

 http://llvm.org

 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal with
 the Software without restriction, including without limitation the rights to
 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 of the Software, and to permit persons to whom the Software is furnished to do
 so, subject to the following conditions:

 * Redistributions of source code must retain the above copyright notice,
 this list of conditions and the following disclaimers.

 * Redistributions in binary form must reproduce the above copyright notice,
 this list of conditions and the following disclaimers in the
 documentation and/or other materials provided with the distribution.

 * Neither the names of the LLVM Team, University of Illinois at
 Urbana-Champaign, nor the names of its contributors may be used to
 endorse or promote products derived from this Software without specific
 prior written permission.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
 SOFTWARE.

* Portions of the FFI code for interacting with the native ABI
 is derived from the Clay programming language, which carries
 the following license.

 Copyright (C) 2008-2010 Tachyon Technologies.
 All rights reserved.

 Redistribution and use in source and binary forms, with
 or without modification, are permitted provided that the
 following conditions are met:

 1. Redistributions of source code must retain the above
 copyright notice, this list of conditions and the
 following disclaimer.

 2. Redistributions in binary form must reproduce the
 above copyright notice, this list of conditions and
 the following disclaimer in the documentation and/or
 other materials provided with the distribution.

 THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR
 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 OF SUCH DAMAGE.

* Portions of internationalization code use code or data from Unicode, which
 carry the following license:

 UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE

 See Terms of Use <https://www.unicode.org/copyright.html>
 for definitions of Unicode Inc.’s Data Files and Software.

 NOTICE TO USER: Carefully read the following legal agreement.
 BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S
 DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"),
 YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
 TERMS AND CONDITIONS OF THIS AGREEMENT.
 IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE
 THE DATA FILES OR SOFTWARE.

 COPYRIGHT AND PERMISSION NOTICE

 Copyright © 1991-2022 Unicode, Inc. All rights reserved.
 Distributed under the Terms of Use in https://www.unicode.org/copyright.html.

 Permission is hereby granted, free of charge, to any person obtaining
 a copy of the Unicode data files and any associated documentation
 (the "Data Files") or Unicode software and any associated documentation
 (the "Software") to deal in the Data Files or Software
 without restriction, including without limitation the rights to use,
 copy, modify, merge, publish, distribute, and/or sell copies of
 the Data Files or Software, and to permit persons to whom the Data Files
 or Software are furnished to do so, provided that either
 (a) this copyright and permission notice appear with all copies
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 (b) this copyright and permission notice appear in associated
 Documentation.

 THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF
 ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS
 NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL
 DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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 Except as contained in this notice, the name of a copyright holder
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