Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: app2unit 0 -> 1
attrpath: app2unit
Checking auto update branch...
[version] 
[version] skipping because derivation has updateScript
[rustCrateVersion] 
[rustCrateVersion] No cargoHash found
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/yw4hr2xhnl1ky3f00vgvxf8b57wkjml7-packages.json.drv
building '/nix/store/yw4hr2xhnl1ky3f00vgvxf8b57wkjml7-packages.json.drv'...

Going to be running update for following packages:
 - app2unit-1.4.2

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - app2unit-1.4.2: UPDATING ...
 - app2unit-1.4.2: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/ap/app2unit/package.nix b/pkgs/by-name/ap/app2unit/package.nix
index 97fea036f6a9..287e5d7c43e4 100644
--- a/pkgs/by-name/ap/app2unit/package.nix
+++ b/pkgs/by-name/ap/app2unit/package.nix
@@ -11,13 +11,13 @@
 }:
 stdenvNoCC.mkDerivation (finalAttrs: {
   pname = "app2unit";
-  version = "1.4.2";
+  version = "1.4.3";
 
   src = fetchFromGitHub {
     owner = "Vladimir-csp";
     repo = "app2unit";
     tag = "v${finalAttrs.version}";
-    sha256 = "sha256-jUAjcpR4IszvmqWAIjZo0rWZt9yydCe3xH4X+mJ5O8k=";
+    sha256 = "sha256-OShQ1ToG6ZH7rXNMmmHEltFedH0whG3hCoCY+ZyP018=";
   };
 
   passthru.updateScript = nix-update-script { };

No auto update branch exists
Received ExitFailure 1 when running
Raw command: nix-build --option sandbox true --arg config "{ allowUnfree = true; allowAliases = false; }" --arg overlays "[ ]" -A app2unit
nix build failed.
got build log for 'app2unit' from 'daemon'
Running phase: unpackPhase
@nix { "action": "setPhase", "phase": "unpackPhase" }
unpacking source archive /nix/store/xgzwdf1kkg04lm4rimsbjrkh42mi9pyf-source
source root is source
Running phase: patchPhase
@nix { "action": "setPhase", "phase": "patchPhase" }
Running phase: updateAutotoolsGnuConfigScriptsPhase
@nix { "action": "setPhase", "phase": "updateAutotoolsGnuConfigScriptsPhase" }
Running phase: configurePhase
@nix { "action": "setPhase", "phase": "configurePhase" }
no configure script, doing nothing
Running phase: buildPhase
@nix { "action": "setPhase", "phase": "buildPhase" }
Error at 70:17: Cannot nest inline formatting (began with _ at 69:43)