libmount is used at run time in 4 crates (of which 2 optionally). It's used only as a dev dependency in 3 crates.

Depender (with downloads and own rev deps) libmount version
13K sccache optional ^0.1.15
lithos ^0.1.10
700 stratisd optional ^0.1.9
libstratis ^0.1.9
11K 2 devicemapper dev ^0.1.11
1 btrfsutil-fake dev ^0.1.11
btrfsutil dev ^0.1.11