Run tests under panic=abort #786

Job	Run time
stable (ubuntu-latest)	1m 44s
stable (macos-latest)	1m 4s
minrust	1m 5s
stable (windows-latest)	2m 51s
cross (i686-unknown-linux-gnu)	27s
loom	1m 8s
cross (armv7-unknown-linux-gnueabihf)	39s
cross (powerpc-unknown-linux-gnu)	25s
miri	12m 19s
nightly	1m 4s
cross (powerpc64-unknown-linux-gnu)	26s
panic=abort tests	16s
cross (wasm32-unknown-unknown)	13s
rustfmt	13s
tsan	1m 18s
Publish Documentation	13s
	25m 25s

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