Nexus cancellation sample #1088

Job	Run time
build-lint-test (3.10, macos-intel)	9m 11s
build-lint-test (3.14, ubuntu-latest)	15m 38s
build-lint-test (3.10, macos-arm)	8m 15s
build-lint-test (3.10, ubuntu-latest)	5m 55s
build-lint-test (3.14, macos-intel)	15m 14s
build-lint-test (3.14, macos-arm)	9m 34s
build-lint-test (3.14, windows-latest)	19m 17s
build-lint-test (3.10, windows-latest)	6m 34s
	1h 29m 38s

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