Test failing on CRAN #487

Job	Run time
R-CMD-check / macOS-latest (release)	6m 42s
R-CMD-check / windows-latest (devel)	13m 27s
R-CMD-check / windows-latest (release)	13m 5s
R-CMD-check / windows-latest (oldrel)	18m 27s
R-CMD-check / windows-latest (4.1)	4m 31s
R-CMD-check / ubuntu-latest (devel)	10m 9s
R-CMD-check / ubuntu-latest (release)	9m 37s
R-CMD-check / ubuntu-latest (4.3)	9m 29s
R-CMD-check / ubuntu-latest (4.2)	1m 35s
R-CMD-check / ubuntu-latest (4.1)	1m 9s
R-CMD-check / ubuntu-latest (4.0)	1m 5s
	1h 29m 16s

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