fix example pipeline #433

Job	Run time
aarch64	45s
arenastring-gcc-stdlibc++-default	39s
basic-gcc-c++20-stdlibc++-asan	45s
arenastring-gcc-stdlibc++-half	36s
basic-gcc-c++20-stdlibc++-tsan	58s
arenastring-gcc-stdlibc++-full	33s
basic-gcc-c++14-stdlibc++-asan	1m 6s
arenastring-clang-stdlibc++-default	44s
basic-clang-c++20-stdlibc++-asan	44s
cpp14-coroutine	27s
arenastring-clang-libc++-default	52s
basic-clang-c++20-stdlibc++-tsan	1m 1s
basic-clang-c++20-libc++-asan	37s
cmake	1m 30s
basic-clang-c++20-libc++-tsan	37s
basic-clang-c++14-stdlibc++-asan	48s
coverage	48s
basic-clang-c++14-libc++-asan	1m 17s
workspace	38s
	15m 25s

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