Fix CI #1006

Job	Run time
Examples	2m 4s
Build docs	20s
Test (macOS)	1m 32s
Check minimal versions	27s
MSRV	0s
Test (nightly)	1m 14s
Test (stable)	2m 24s
Test (beta)	2m 14s
Test (Windows)	4m 23s
Test (native-tls)	2m 10s
Test (no default features)	37s
Test (no cache)	2m 16s
Test (no gateway)	1m 44s
Test (unstable Discord API features)	2m 24s
Test (chrono, chrono)	49s
Test (unstable API + typesize, default unstable typesize, true)	48s
Test (builder without model, builder, true)	24s
Test (unstable Discord API (no default features), unstable, true)	28s
	26m 18s

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