[Swift CI] Build Failure: 0. OSS - Swift Incremental RA - Ubuntu 16.04 - Long Test (master) #6480

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# [FAILURE] oss-swift-incremental-RA-linux-ubuntu-16_04-long-test [#6480]

Build URL: https://ci.swift.org/job/oss-swift-incremental-RA-linux-ubuntu-16_04-long-test/6480/
Project: oss-swift-incremental-RA-linux-ubuntu-16_04-long-test
Date of build: Thu, 23 Jul 2020 16:19:00 -0500
Build duration: 1 hr 4 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 32d341e244d4a56185ed04c60542250b5b5047e9 by repo:

[build] extend support for building with a prebuilt toolchain to the

  • edit: utils/build-script-impl

  • Commit c8e9018c4d6c7936c3ce4ea9ce35bf8aa705574d by hborla:

    [CSGen] Don't merge type variables for literals in

    • edit: test/stdlib/UnicodeScalarDiagnostics.swift
    • edit: lib/Sema/CSGen.cpp

  • Commit 71b3ac4d811b16888d40d7c74d7a4b08a5b3d3b5 by hborla:

    [CSGen] Remove literal type variable tracking from LinkedTypeInfo.

    • edit: lib/Sema/CSGen.cpp

  • Commit deff87d4e83d3afe22f191b1b27ca4cbe114295d by compnerd:

    validation-test: make scale-test explicitly handle encoding

    • edit: utils/scale-test

  • Commit f2502b9f61eeecb898818658e437f5101d48d06a by rishizaki:

    [Test] Add indexing test cases for ExplicitCastExpr

    • edit: test/Index/expressions.swift

  • Commit 1a81573eedcb97923b51dad2aeedd433cbb71b63 by github:

    [AutoDiff] Start linear_function canonicalization skeleton (#33057)

    • edit: lib/SILOptimizer/Differentiation/ADContext.cpp
    • edit: lib/SILOptimizer/Differentiation/VJPCloner.cpp
    • edit: lib/SILOptimizer/Differentiation/DifferentiationInvoker.cpp
    • edit: lib/SILOptimizer/Mandatory/Differentiation.cpp
    • edit: include/swift/SILOptimizer/Differentiation/ADContext.h
    • add: test/AutoDiff/SILOptimizer/linear_function_canonicalization.sil
    • edit: lib/SILOptimizer/Differentiation/JVPCloner.cpp
    • edit: include/swift/SILOptimizer/Differentiation/DifferentiationInvoker.h

  • Commit d0d4840c42985ccb77bcd3ca1c0cd85defecea9c by kevinb:

    Add STAR to README as an example

    • edit: README.md