CI #1876

Job	Run time
RuboCop	31s
specs (ubuntu, 3.0.6)	1m 30s
specs (ubuntu, 3.1.4)	1m 34s
specs (ubuntu, 3.2.2)	1m 25s
specs (ubuntu, 3.3.0)	1m 27s
specs (ubuntu, 3.4.1)	1m 33s
specs (macos, 3.0.6)	1m 27s
specs (macos, 3.1.4)	1m 40s
specs (macos, 3.2.2)	1m 15s
specs (macos, 3.3.0)	56s
specs (macos, 3.4.1)	1m 24s
specs (windows, 3.0.6)	4m 7s
specs (windows, 3.1.4)	4m 36s
specs (windows, 3.2.2)	4m 40s
specs (windows, 3.3.0)	4m 52s
specs (windows, 3.4.1)	4m 18s
specs (ubuntu, 3.3.0, --enable-frozen-string-literal)	1m 26s
	38m 41s

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