urcu2-sys is used at run time in 6 crates.

Depender (with downloads and own rev deps) urcu2-sys version
700 1 urcu2-bp-sys ^0.1.8
650 1 urcu2-mb-sys ^0.1.8
650 urcu2 ^0.1.8
550 1 urcu2-memb-sys ^0.1.8
550 1 urcu2-qsbr-sys ^0.1.8
180 1 urcu2-cds-sys ^0.1.8