fix for #286 #247

Job	Run time
3.7 CH=23.8.4.69	31s
3.7 CH=22.5.1.2079	29s
3.7 CH=19.3.5	31s
3.7 CH=18.14.9	31s
3.8 CH=23.8.4.69	17s
3.8 CH=22.5.1.2079	17s
3.8 CH=19.3.5	14s
3.8 CH=18.14.9	15s
3.9 CH=23.8.4.69	1s
3.9 CH=22.5.1.2079	1s
3.9 CH=19.3.5	1s
3.9 CH=18.14.9	1s
3.10 CH=23.8.4.69	14s
3.10 CH=22.5.1.2079	17s
3.10 CH=19.3.5	16s
3.10 CH=18.14.9	16s
3.11 CH=23.8.4.69	15s
3.11 CH=22.5.1.2079	15s
3.11 CH=19.3.5	16s
3.11 CH=18.14.9	16s
3.12 CH=23.8.4.69	31s
3.12 CH=22.5.1.2079	29s
3.12 CH=19.3.5	30s
3.12 CH=18.14.9	32s
Indicate completion to coveralls.io	0s
	7m 16s

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