warning: unnecessary parentheses around closure body
   --> homotopy-core/src/collapse.rs:135:22
    |
135 |         .filter(|&e| (e.target() != keep))
    |                      ^                  ^
    |
    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
help: remove these parentheses
    |
135 -         .filter(|&e| (e.target() != keep))
135 +         .filter(|&e| e.target() != keep)
    |

warning: unnecessary parentheses around closure body
   --> homotopy-core/src/collapse.rs:158:22
    |
158 |         .filter(|&e| (e.source() != keep))
    |                      ^                  ^
    |
help: remove these parentheses
    |
158 -         .filter(|&e| (e.source() != keep))
158 +         .filter(|&e| e.source() != keep)
    |

warning: `homotopy-core` (lib) generated 2 warnings (run `cargo fix --lib -p homotopy-core` to apply 2 suggestions)
   Compiling homotopy-core v0.1.0 (/home/maximus/.env/extern/diagrammatic-semiotics/homotopy-rs/homotopy-core)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
     Running `target/debug/examples/export_essential`
=== Building essential identity scenario ===

two_scalars: dim=2, size=2
two_scalars_3d: dim=3, size=0

Attempting contraction...
Contraction failed: OutOfBounds

Fallback: using half_braid
half_braid: dim=3, size=1
padded_3d: dim=3, size=2
wrapped_4d: dim=4, size=1