Print the node values of registers (#2056) #992

Job	Run time
install (dev, Windows, windows-latest, 4.13.1, -async-proofs-j 1, git+https://github.com/ocaml/oc...	1h 31m 41s
install (dev, Ubuntu, ubuntu-latest, 4.09.1)	39m 46s
install (8.19.0, Windows, windows-latest, 4.13.1, -async-proofs-j 1, git+https://github.com/ocaml...	1h 36m 4s
install (8.19.0, macOS, macos-latest, 4.14.2)	35m 56s
install (dev, macOS, macos-latest, 4.14.2)	51m 3s
install (8.20.0, Windows, windows-latest, 4.13.1, -async-proofs-j 1, git+https://github.com/ocaml...	1h 34m 38s
install (8.20.0, macOS, macos-latest, 4.14.2)	33m 9s
install (8.19.0, Ubuntu, ubuntu-latest, 4.09.1)	41m 1s
install (8.18.0, Windows, windows-latest, 4.13.1, -async-proofs-j 1, git+https://github.com/ocaml...	1h 39m 32s
install (8.18.0, Ubuntu, ubuntu-latest, 4.09.1)	42m 58s
install (8.20.0, Ubuntu, ubuntu-latest, 4.09.1)	40m 23s
install (8.18.0, macOS, macos-latest, 4.14.2)	41m 49s
	11h 48m 0s

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