[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 18.04 - Long Test (master) #3874

# [FAILURE] oss-swift-incremental-RA-linux-ubuntu-18_04-long-test [#3874]

Build URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-18_04-long-test/3874/
Project: oss-swift-incremental-RA-linux-ubuntu-18_04-long-test
Date of build: Fri, 05 Jun 2020 02:12:49 -0500
Build duration: 2 hr 46 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 f5258ed9c9f344e2f974b769e9a20ae7bc079525 by spestov:

ASTDemangler: Add support for member types of opaque result types