this derivation will be built:
  /nix/store/rxah5jm1czw3zm32rgvpsl7qj11kysid-treefmt-check.drv
error: Cannot build '/nix/store/rxah5jm1czw3zm32rgvpsl7qj11kysid-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/3yx27css7y2i1ds14rpxxjpxz38ygpnk-treefmt-check
       Last 25 log lines:
       >      fn unit_opens_exactly_the_needed_write_paths() {
       >          let unit = render_unit(&spec(None));
       > -        assert!(
       > -            unit.contains(
       > -                "ReadWritePaths=/home/alice/.pi/agent/sessions /home/alice/.local/share/ssync"
       > -            )
       > -        );
       > +        assert!(unit.contains(
       > +            "ReadWritePaths=/home/alice/.pi/agent/sessions /home/alice/.local/share/ssync"
       > +        ));
       >      }
       >  
       >      #[test]
       > @@ -426,7 +427,10 @@ mod tests {
       >      fn missing_components_lists_only_what_create_would_add() {
       >          let base = scratch("missing");
       >          let leaf = base.join("a/b");
       > -        assert_eq!(missing_components(&leaf), vec![leaf.clone(), base.join("a")]);
       > +        assert_eq!(
       > +            missing_components(&leaf),
       > +            vec![leaf.clone(), base.join("a")]
       > +        );
       >          assert!(missing_components(&base).is_empty());
       >          std::fs::remove_dir_all(&base).unwrap();
       >      }
       For full logs, run:
         nix log /nix/store/rxah5jm1czw3zm32rgvpsl7qj11kysid-treefmt-check.drv