tidy, rustfmt: skip src/tools/semverver.

Author: eddyb

rustfmt.toml

@@ -30,6 +30,7 @@ ignore = [
     "src/tools/rust-analyzer",
     "src/tools/rust-installer",
     "src/tools/rustfmt",
+    "src/tools/semverver",
 
     # We do not format this file as it is externally sourced and auto-generated.
     "src/libstd/sys/cloudabi/abi/cloudabi.rs",

src/tools/tidy/src/lib.rs

@@ -59,6 +59,7 @@ fn filter_dirs(path: &Path) -> bool {
         "src/tools/rust-analyzer",
         "src/tools/rust-installer",
         "src/tools/rustfmt",
+        "src/tools/semverver",
         "src/doc/book",
         // Filter RLS output directories
         "target/rls",