It's used only as a dev dependency in 5 crates.

Depender (with downloads and own rev deps) trim-margin version
5.1K 14 pact_models dev ^0.1.0
110 6 daml-lf dev ^0.1.0
1 moose-macros dev ~0.1
1 subgraph-matching dev ^0.1.0
assert-graph-iso dev ^0.1.0