fomat-macros is used at run time in 3 crates (of which 1 optionally). It's used only as a dev dependency in 3 crates (of which 1 directly).

Depender (with downloads and own rev deps) fomat-macros version
2.8K 3 gstuff optional ^0.3
120 odoo-lsp ^0.3.2
fsm_gen ^0.3.1
pg_async dev ^0.3