Short version for non-lawyers:
This project is dual-licensed under Apache 2.0 and MIT
terms.
Longer version:
This library contains code derived from the Rust Project.
The modifications are copyright 2014, Mikhail Zabaluev
<mikhail.zabaluev@gmail.com>.
The Rust Project is copyright 2014, The Rust Project
Developers (given in the file AUTHORS.txt).
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. All files in the project carrying such
notice may not be copied, modified, or distributed except
according to those terms.
Additional copyright may be retained by contributors other
than Mozilla, the Rust Project Developers, or the parties
enumerated in this file. Such copyright can be determined
on a case-by-case basis by examining the author of each
portion of a file in the revision-control commit records
of the project, or by consulting representative comments
claiming copyright ownership for a file.
In all such cases, the absence of explicit licensing text
indicates that the contributor chose to license their work
for distribution under identical terms to those Mozilla
has chosen for the collective work, enumerated at the top
of this file. The only difference is the retention of
copyright itself, held by the contributor.