this derivation will be built:
  /nix/store/62xzkkqf7wyr468l7d848fncby2lkr7m-treefmt-check.drv
treefmt-check> treefmt v2.5.0traversed 21 files
treefmt-check> emitted 15 files for processing
treefmt-check> formatted 15 files (1 changed) in 352ms
treefmt-check>  M README.md
treefmt-check> diff --git a/README.md b/README.md
treefmt-check> index 40bfc5d..da878a1 100644
treefmt-check> --- a/README.md
treefmt-check> +++ b/README.md
treefmt-check> @@ -61,7 +61,7 @@ safely.
treefmt-check>  
treefmt-check>  ## Using it
treefmt-check>  
treefmt-check> -`gcan` has four subcommands: 
treefmt-check> +`gcan` has four subcommands:
treefmt-check>  
treefmt-check>  - **`list`**: show roots
treefmt-check>  - **`delete`**: remove them
error: Cannot build '/nix/store/62xzkkqf7wyr468l7d848fncby2lkr7m-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/mm06fy74qc790ws5p19z7nyv0wc58fdz-treefmt-check
       Last 17 log lines:
       > treefmt v2.5.0traversed 21 files
       > emitted 15 files for processing
       > formatted 15 files (1 changed) in 352ms
       >  M README.md
       > diff --git a/README.md b/README.md
       > index 40bfc5d..da878a1 100644
       > --- a/README.md
       > +++ b/README.md
       > @@ -61,7 +61,7 @@ safely.
       >  
       >  ## Using it
       >  
       > -`gcan` has four subcommands: 
       > +`gcan` has four subcommands:
       >  
       >  - **`list`**: show roots
       >  - **`delete`**: remove them
       For full logs, run:
         nix-store -l /nix/store/62xzkkqf7wyr468l7d848fncby2lkr7m-treefmt-check.drv