[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 18.04 - Long Test (master) #4251

# [FAILURE] oss-swift-incremental-RA-linux-ubuntu-18_04-long-test [#4251]

Build URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-18_04-long-test/4251/
Project: oss-swift-incremental-RA-linux-ubuntu-18_04-long-test
Date of build: Fri, 04 Sep 2020 03:41:24 -0500
Build duration: 2 hr 29 min

Identified problems:- Compile Error: This build failed because of a compile error. Below is a list of all errors in the build log:

Changes- Commit 29f2f7719a6a499c0fa6b17e05b9bd9777ef2897 by github:

[docs] Update branching documentation to use new release branch naming scheme. (#33766)

  • edit: docs/Branches.md

  • Commit 425475ee96eb6aa3dd2d89f0116b0b6490037a37 by owen:

    Add a -driver-warn-unused-options flag for debugging

    • edit: Sources/SwiftOptions/ParsedOptions.swift
    • edit: Sources/SwiftOptions/ExtraOptions.swift
    • edit: Sources/SwiftDriver/Driver/Driver.swift