Support task tracer (#2851) #1612

Job	Run time
gcc-compile-with-bazel	16m 57s
gcc-compile-with-bazel	16m 57s
gcc-compile-with-boringssl	18m 25s
gcc-compile-with-boringssl	18m 25s
gcc-compile-with-cmake	3m 49s
gcc-compile-with-cmake	3m 49s
gcc-compile-with-make	2m 43s
gcc-compile-with-make	2m 43s
clang-compile-with-bazel	16m 0s
clang-compile-with-bazel	16m 0s
clang-compile-with-bazel-all-options	16m 36s
clang-compile-with-bazel-all-options	16m 36s
clang-compile-with-boringssl	17m 53s
clang-compile-with-boringssl	17m 53s
clang-compile-with-cmake	2m 50s
clang-compile-with-cmake	2m 50s
clang-compile-with-cmake-all-options	2m 45s
clang-compile-with-cmake-all-options	4m 52s
clang-compile-with-make	3m 9s
clang-compile-with-make	3m 9s
clang-compile-with-make-all-options	5m 35s
clang-compile-with-make-all-options	5m 35s
clang-unittest	16m 29s
clang-unittest	16m 29s
gcc-compile-with-bazel-all-options	18m 3s
gcc-compile-with-bazel-all-options	18m 3s
gcc-compile-with-cmake-all-options	5m 31s
gcc-compile-with-cmake-all-options	5m 31s
gcc-compile-with-make-all-options	6m 0s
gcc-compile-with-make-all-options	6m 0s
	5h 7m 37s

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