Prestwich/dyn sol error #1614

Job	Run time
feature-checks	3m 27s
clippy	43s
fmt	15s
docs	27s
miri --no-default-features	2m 57s
wasm	32s
miri	3m 0s
test stable --no-default-features	1m 11s
miri --all-features	3m 50s
test stable	55s
test stable --all-features	1m 37s
test beta --no-default-features	51s
test beta	53s
test beta --all-features	1m 22s
test nightly --no-default-features	1m 4s
test nightly	1m 1s
test nightly --all-features	1m 30s
test 1.65 --no-default-features	48s
test 1.65	51s
test 1.65 --features json	52s
	28m 6s

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