fx: exclude fields typo #424

Job	Run time
test (3.8, 1.4.9)	55s
test (3.8, 1.5.0)	53s
test (3.8, 1.6.0)	1m 2s
test (3.9, 1.4.9)	59s
test (3.9, 1.5.0)	1m 5s
test (3.9, 1.6.0)	58s
test (3.10, 1.4.9)	51s
test (3.10, 1.5.0)	53s
test (3.10, 1.6.0)	54s
test (3.11, 1.4.9)	55s
test (3.11, 1.5.0)	50s
test (3.11, 1.6.0)	56s
test (3.12, 1.4.9)	1m 0s
test (3.12, 1.5.0)	55s
test (3.12, 1.6.0)	1m 0s
Indicate completion to coveralls.io	13s
	14m 19s

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