this derivation will be built:
  /nix/store/pl85m0w3c2l097wilgwaynjxix0ca46j-treefmt-check.drv
error: Cannot build '/nix/store/pl85m0w3c2l097wilgwaynjxix0ca46j-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/9d37ngsvkg28fl9qqvps94dhgb02zmcg-treefmt-check
       Last 25 log lines:
       >
       >  ## Running only on changed inputs (`when.changed`)
       >
       > -`when.changed` names the inputs an effect depends on. The effect is not run again
       > -while they are the same as in its last successful run:
       > +`when.changed` names the inputs an effect depends on. The effect is not run
       > +again while they are the same as in its last successful run:
       >
       >  ```nix
       >  hil = mkEffect {
       > @@ -114,10 +114,10 @@ hil = mkEffect {
       >  ```
       >
       >  Values must be strings, typically store paths: up to 32 inputs of at most 1024
       > -bytes each. When the effect's turn comes (after
       > -its `lock`) and the last successful run of this effect in the repository had the
       > -same inputs, it is marked succeeded as "unchanged since build #N" without
       > -running. Effects `after` it run as usual.
       > +bytes each. When the effect's turn comes (after its `lock`) and the last
       > +successful run of this effect in the repository had the same inputs, it is
       > +marked succeeded as "unchanged since build #N" without running. Effects `after`
       > +it run as usual.
       >
       >  Failed runs and runs for pull requests do not count. A restart always runs the
       >  effect. Only `onPush` effects support `when.changed`, and no other `when` key.
       For full logs, run:
         nix log /nix/store/pl85m0w3c2l097wilgwaynjxix0ca46j-treefmt-check.drv