Add ballpark benchmarking #2

Job	Run time
get-tag	4s
benchmark (pr, c0eddc89a670843e2570a24fbdbcd3b51e9e6806)	7s
benchmark (main, main)	11s
benchmark	19s
report	0s
get-tag	4s
benchmark (pr, c0eddc89a670843e2570a24fbdbcd3b51e9e6806)	1s
benchmark	19s
benchmark (main, main)	11s
report	0s
	1m 16s

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