swift-build-failure.txt

[519/1021] Building HTML documentation
FAILED: docs/CMakeFiles/docs_html 
cd /Users/bjhomer/Projects/swift-source/swift/docs && /usr/local/bin/sphinx-build -W -D latex_paper_size=letter -d /Users/bjhomer/Projects/swift-source/build/Ninja-DebugAssert/swift-macosx-x86_64/doctrees -b html . /Users/bjhomer/Projects/swift-source/build/Ninja-DebugAssert/swift-macosx-x86_64/docs/html
Running Sphinx v1.6b3
/usr/local/Cellar/python/2.7.7_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/Sphinx-1.6b3-py2.7.egg/sphinx/util/requests.py:64: UserWarning: Some links may return broken results due to being unable to check the Server Name Indication (SNI) in the returned SSL cert against the hostname in the url requested. Recommended to install "requests[security]" as a dependency or upgrade to a python version with SNI support (Python 3 and Python 2.7.9+).
  'Some links may return broken results due to being unable to '

Warning, treated as error:
unknown config value 'latex_paper_size' in override, ignoring
[523/1021] Generating /Users/bjhomer/Projects/swift-source/build/Ninja-DebugAssert/swift-macosx-x86_64/./lib/swift/macosx/x86_64/Swift.swiftmodule
/Users/bjhomer/Projects/swift-source/swift/stdlib/public/core/SetAlgebra.swift:59:18: warning: redeclaration of associated type 'Element' from protocol 'ExpressibleByArrayLiteral' is better expressed as a 'where' clause on the protocol
  associatedtype Element
  ~~~~~~~~~~~~~~~^~~~~~~
  
/Users/bjhomer/Projects/swift-source/swift/stdlib/public/core/CompilerProtocols.swift:583:18: note: 'Element' declared here
  associatedtype Element
                 ^
[524/1021] Compiling /Users/bjhomer/Projects/swift-source/build/Ninja-DebugAssert/swift-macosx-x86_64/stdlib/public/core/macosx/x86_64/Swift.o
/Users/bjhomer/Projects/swift-source/swift/stdlib/public/core/SetAlgebra.swift:59:18: warning: redeclaration of associated type 'Element' from protocol 'ExpressibleByArrayLiteral' is better expressed as a 'where' clause on the protocol
  associatedtype Element
  ~~~~~~~~~~~~~~~^~~~~~~
  
/Users/bjhomer/Projects/swift-source/swift/stdlib/public/core/CompilerProtocols.swift:583:18: note: 'Element' declared here
  associatedtype Element
                 ^
ninja: build stopped: subcommand failed.
utils/build-script: fatal error: command terminated with a non-zero exit status 1, aborting