あれ、 --jobs 1でも、実は途中でビルドコケてる気がしてきた。↓最後の部分
******************** Testing Time: 1232.07s ******************** Failing Tests (4): Swift(linux-x86_64) :: ParseableInterface/ModuleCache/force-module-loading-mode-archs.swift Swift(linux-x86_64) :: Index/Store/output-failure.swift Swift(linux-x86_64) :: ParseableInterface/ModuleCache/force-module-loading-mode-framework.swift Swift(linux-x86_64) :: ParseableInterface/ModuleCache/force-module-loading-mode.swift Expected Passes : 4104 Expected Failures : 22 Unsupported Tests : 1124 Unexpected Failures: 4 2 warning(s) in tests. FAILED: test/CMakeFiles/check-swift-linux-x86_64 cd /root/swift-source/build/Ninja-ReleaseAssert/swift-linux-x86_64/test && /usr/bin/cmake -E remove_directory /root/swift-source/build/Ninja-ReleaseAssert/swift-linux-x86_64/./swift-test-results/x86_64-unknown-linux-gnu && /usr/bin/cmake -E make_directory /root/swift-source/build/Ninja-ReleaseAssert/swift-linux-x86_64/./swift-test-results/x86_64-unknown-linux-gnu && /usr/bin/python /root/swift-source/llvm/utils/lit/lit.py --incremental -sv --xunit-xml-output=/root/swift-source/build/Ninja-ReleaseAssert/swift-linux-x86_64/./swift-test-results/x86_64-unknown-linux-gnu/lit-tests.xml --param swift_test_subset=primary --param swift_test_mode=optimize_none /root/swift-source/build/Ninja-ReleaseAssert/swift-linux-x86_64/test-linux-x86_64 ninja: build stopped: subcommand failed. utils/build-script: fatal error: command terminated with a non-zero exit status 1, aborting