Periodically report memory usage #5616

Job	Run time
Measure coverage	28m 22s
Additional Builds and Concurrency Tests	14m 53s
Basic Checks	6m 51s
miri	3m 0s
Release builds and tests	10m 24s
sanitize (address)	17m 44s
Slow tests	19m 1s
sanitize (address, multi-threading)	19m 32s
sanitize (leak)	7m 57s
sanitize (leak, multi-threading)	8m 30s
	2h 16m 14s

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