log rejected sendjoin, remove unnecessary clone

Signed-off-by: strawberry <strawberry@puppygock.gay>

Cargo.lock

@@ -414,6 +414,7 @@ dependencies = [
  "js_option",
  "jsonwebtoken",
  "lazy_static",
+ "loole",
  "lru-cache",
  "nix",
  "num_cpus",
@@ -1421,6 +1422,12 @@ version = "0.4.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
 
+[[package]]
+name = "loole"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a7039a651ba2fccd770a7534059b9744b3641390d696e2f91de6655457e9327"
+
 [[package]]
 name = "lru-cache"
 version = "0.1.2"