Running nixpkgs-update (https://github.com/NixOS/infra/blob/main/non-critical-infra/modules/nixpkgs-update/README.md) with UPDATE_INFO: fontc 0 -> 1
attrpath: fontc
Checking auto update branch...
[version] 
[version] generic version rewriter does not support multiple hashes
[rustCrateVersion] 
[rustCrateVersion] skipping because derivation has updateScript
[golangModuleVersion] 
[golangModuleVersion] Not a buildGoModule package with vendorHash
[npmDepsVersion] 
[npmDepsVersion] No npmDepsHash
[updateScript] 
[updateScript] Success
[updateScript] this derivation will be built:
  /nix/store/gvsvz5qc01xl5sh643w3x0g2cwlbv59s-packages.json.drv
building '/nix/store/gvsvz5qc01xl5sh643w3x0g2cwlbv59s-packages.json.drv'...
structuredAttrs is enabled

Going to be running update for following packages:
 - fontc-0.6.0

Press Enter key to continue...
Running update for:
Enqueuing group of 1 packages
 - fontc-0.6.0: UPDATING ...
 - fontc-0.6.0: DONE.

Packages updated!

Diff after rewrites:
diff --git a/pkgs/by-name/fo/fontc/package.nix b/pkgs/by-name/fo/fontc/package.nix
index 0ce9a14fa52d..b628d57bdb73 100644
--- a/pkgs/by-name/fo/fontc/package.nix
+++ b/pkgs/by-name/fo/fontc/package.nix
@@ -7,14 +7,14 @@
 
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "fontc";
-  version = "0.6.0";
+  version = "1.0.0";
 
   src = fetchCrate {
     inherit (finalAttrs) pname version;
-    hash = "sha256-TjbhVkhoIoyp6A33v/QVaNLoHxB5whT/gOlehQTUKxM=";
+    hash = "sha256-lM6PgEcO+4pOhU+KNDmw8lilhTrT2di7FcRkMwkvCfo=";
   };
 
-  cargoHash = "sha256-FLvEgIFgLE++59j5LeCRC4ptgRhAiDF7hani4Yh8kn0=";
+  cargoHash = "sha256-do9oFs55bwwEA+cJyNlELJE8/k+xamE5xMtli+xy3/k=";
 
   # skip `cargo test` because source code from crates.io doesn't include necessary resources for testing
   doCheck = false;

No auto update branch exists
There might already be an open PR for this update:
- fontc: 0.6.0 -> 1.0.0, switch to fetchFromGitHub, enable tests
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/561525"