[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 16.04 (main) #16068

[swift-ci]

# [FAILURE] oss-swift-incremental-RA-linux-ubuntu-16_04 [#16068]

Build URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16_04/16068/
Project: oss-swift-incremental-RA-linux-ubuntu-16_04
Date of build: Wed, 10 Mar 2021 06:19:23 -0600
Build duration: 48 min

Identified problems:- Swift Compile Error: Swift compiler error

• Indication 1
• 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 74fe92ffdb0c13c548773c97ee2dd6ba9b757b00 by eeckstein:

SILCombine: remove dead unconditional_checked_cast

• edit: test/SILOptimizer/sil_combine.sil
• edit: lib/SILOptimizer/Analysis/SimplifyInstruction.cpp
• edit: test/SILOptimizer/sil_combine_ossa.sil