this derivation will be built:
  /nix/store/z2y5286qvybygdmhivbj4jxrdvv20nfs-treefmt-check.drv
building '/nix/store/z2y5286qvybygdmhivbj4jxrdvv20nfs-treefmt-check.drv'
treefmt-check> tribuchet: building on jamie
treefmt-check> treefmt v2.5.0traversed 102 files
treefmt-check> emitted 84 files for processing
treefmt-check> formatted 84 files (1 changed) in 177ms
treefmt-check>  M crates/tribuchet/src/worker/sandbox/linux.rs
treefmt-check> diff --git a/crates/tribuchet/src/worker/sandbox/linux.rs b/crates/tribuchet/src/worker/sandbox/linux.rs
treefmt-check> index 5b50848..5eb14f6 100644
treefmt-check> --- a/crates/tribuchet/src/worker/sandbox/linux.rs
treefmt-check> +++ b/crates/tribuchet/src/worker/sandbox/linux.rs
treefmt-check> @@ -695,7 +695,8 @@ fn tmpfs_root(p: &SetupParams) -> io::Result<()> {
treefmt-check>      .map_err(ioerr("detaching scratch store"))?;
treefmt-check>      mount("tmpfs", root, "tmpfs", MountFlags::empty(), None)
treefmt-check>          .map_err(ioerr("mounting tmpfs root"))?;
treefmt-check> -    write_skeleton(p.spec).map_err(|e| io::Error::other(format!("populating tmpfs root: {e:#}")))?;
treefmt-check> +    write_skeleton(p.spec)
treefmt-check> +        .map_err(|e| io::Error::other(format!("populating tmpfs root: {e:#}")))?;
treefmt-check>      move_mount(
treefmt-check>          store.as_fd(),
treefmt-check>          "",
error: Cannot build '/nix/store/z2y5286qvybygdmhivbj4jxrdvv20nfs-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/7xr4fgyi1jzp5q6pbzambaq510bpby13-treefmt-check
       Last 19 log lines:
       > tribuchet: building on jamie
       > treefmt v2.5.0traversed 102 files
       > emitted 84 files for processing
       > formatted 84 files (1 changed) in 177ms
       >  M crates/tribuchet/src/worker/sandbox/linux.rs
       > diff --git a/crates/tribuchet/src/worker/sandbox/linux.rs b/crates/tribuchet/src/worker/sandbox/linux.rs
       > index 5b50848..5eb14f6 100644
       > --- a/crates/tribuchet/src/worker/sandbox/linux.rs
       > +++ b/crates/tribuchet/src/worker/sandbox/linux.rs
       > @@ -695,7 +695,8 @@ fn tmpfs_root(p: &SetupParams) -> io::Result<()> {
       >      .map_err(ioerr("detaching scratch store"))?;
       >      mount("tmpfs", root, "tmpfs", MountFlags::empty(), None)
       >          .map_err(ioerr("mounting tmpfs root"))?;
       > -    write_skeleton(p.spec).map_err(|e| io::Error::other(format!("populating tmpfs root: {e:#}")))?;
       > +    write_skeleton(p.spec)
       > +        .map_err(|e| io::Error::other(format!("populating tmpfs root: {e:#}")))?;
       >      move_mount(
       >          store.as_fd(),
       >          "",
       For full logs, run:
         nix log /nix/store/z2y5286qvybygdmhivbj4jxrdvv20nfs-treefmt-check.drv