Fix flaky test #3344

Job	Run time
macos/clang++/c++17	11m 0s
macos/clang++/c++17	11m 5s
macos/clang++/c++17	11m 35s
macos/clang++/c++17	11m 29s
macos/clang++/c++17	11m 24s
buster/g++/c++17/asan=off/ubsan=off	27m 16s
buster/g++/c++17/asan=off/ubsan=off	23m 8s
buster/g++/c++17/asan=off/ubsan=off	22m 59s
buster/g++/c++17/asan=off/ubsan=off	25m 20s
buster/g++/c++17/asan=off/ubsan=off	28m 45s
focal/clang++/c++17/asan=off/ubsan=on	27m 23s
focal/clang++/c++17/asan=off/ubsan=on	25m 14s
focal/clang++/c++17/asan=off/ubsan=on	24m 6s
focal/clang++/c++17/asan=off/ubsan=on	33m 52s
focal/clang++/c++17/asan=off/ubsan=on	26m 9s
focal/g++-10/c++20/asan=on/ubsan=off	41m 19s
focal/g++-10/c++20/asan=on/ubsan=off	31m 31s
focal/g++-10/c++20/asan=on/ubsan=off	27m 5s
focal/g++-10/c++20/asan=on/ubsan=off	26m 15s
focal/g++-10/c++20/asan=on/ubsan=off	35m 48s
jammy/g++/c++20/asan=on/ubsan=off	34m 15s
jammy/g++/c++20/asan=on/ubsan=off	33m 34s
jammy/g++/c++20/asan=on/ubsan=off	27m 24s
jammy/g++/c++20/asan=on/ubsan=off	29m 55s
jammy/g++/c++20/asan=on/ubsan=off	29m 43s
	10h 37m 34s

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