test

Removed duplicate server thread #142

Job	Run time
ruby-versions / Generate Ruby versions	2s
build (2.5 / ubuntu-latest)	27s
build (2.5 / windows-latest)	2m 35s
build (2.6 / ubuntu-latest)	24s
build (2.6 / macos-latest)	32s
build (2.6 / windows-latest)	3m 14s
build (2.7 / ubuntu-latest)	26s
build (2.7 / macos-latest)	43s
build (2.7 / windows-latest)	2m 41s
build (3.0 / ubuntu-latest)	12s
build (3.0 / macos-latest)	15s
build (3.0 / windows-latest)	1m 51s
build (3.1 / ubuntu-latest)	13s
build (3.1 / macos-latest)	19s
build (3.1 / windows-latest)	2m 15s
build (3.2 / ubuntu-latest)	12s
build (3.2 / macos-latest)	14s
build (3.2 / windows-latest)	2m 1s
build (3.3 / ubuntu-latest)	9s
build (3.3 / macos-latest)	9s
build (3.3 / windows-latest)	1m 47s
build (head / ubuntu-latest)	11s
build (head / macos-latest)	21s
build (head / windows-latest)	1m 3s
	22m 16s

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