style: format core with rustfmt

core/src/error.rs

@@ -27,7 +27,10 @@ pub enum Error {
     /// The host has no pinned server key, so the session cannot be
     /// authenticated (sec 4). A GUI routes this to pinning; an auth failure
     /// is terminal. The port scopes the pin (address::trust_label).
-    NotPinned { host: String, port: u16 },
+    NotPinned {
+        host: String,
+        port: u16,
+    },
     /// A pinned server presented a different key (sec 4): a hard abort, the
     /// pin is the entire trust model. The port scopes the pin
     /// (address::trust_label).
@@ -47,10 +50,15 @@ pub enum Error {
     /// The store has no account yet; registering or restoring creates one.
     NotRegistered,
     /// The rotation index would exceed the chain limit (sec 2).
-    ChainLimit { index: u32 },
+    ChainLimit {
+        index: u32,
+    },
     /// The store was written by a schema this build cannot read; a host
     /// decides when to migrate, not the library.
-    SchemaVersion { found: i32, expected: i32 },
+    SchemaVersion {
+        found: i32,
+        expected: i32,
+    },
     /// The server could not be reached at all.
     Unreachable {
         host: String,