[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 16.04 - Long Test (master) #2447

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[FAILURE] oss-swift-incremental-RA-linux-ubuntu-16_04-long-test [#2447]

Build URL:
https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16_04-long-test/2447/
Project:
oss-swift-incremental-RA-linux-ubuntu-16_04-long-test
Date of build:
Thu, 20 Sep 2018 02:22:20 -0500
Build duration:
32 min

Identified problems:

• Compile Error: This build failed because of a compile error. Below is a list of all errors in the build log:
  • Indication 1

Changes

• Commit cc32f50691d4e42fb1465788a6abb2c566d13a80 by dgregor:
  [Runtime] Remove duplicate witness checking for now.

  • edit: stdlib/public/runtime/Metadata.cpp

• Commit 7cee5d18ba836626254da456f976574a7c314d7c by ben_cohen:
  Give StringProtocol.SubSequence a default of Substring to supress

  • edit: stdlib/public/core/StringProtocol.swift