cargo fmt with stable defaults (#876)

testing/integration-tests/src/utils/node_proc.rs

@@ -4,21 +4,11 @@
 
 use sp_keyring::AccountKeyring;
 use std::{
-    ffi::{
-        OsStr,
-        OsString,
-    },
-    io::{
-        BufRead,
-        BufReader,
-        Read,
-    },
+    ffi::{OsStr, OsString},
+    io::{BufRead, BufReader, Read},
     process,
 };
-use subxt::{
-    Config,
-    OnlineClient,
-};
+use subxt::{Config, OnlineClient};
 
 /// Spawn a local substrate node for testing subxt.
 pub struct TestNodeProcess<R: Config> {
@@ -53,7 +43,7 @@ where
         if let Err(err) = self.proc.kill() {
             let err = format!("Error killing node process {}: {}", self.proc.id(), err);
             tracing::error!("{}", err);
-            return Err(err)
+            return Err(err);
         }
         Ok(())
     }
@@ -143,24 +133,21 @@ fn find_substrate_port_from_output(r: impl Read + Send + 'static) -> u16 {
     BufReader::new(r)
         .lines()
         .find_map(|line| {
-            let line =
-                line.expect("failed to obtain next line from stdout for port discovery");
+            let line = line.expect("failed to obtain next line from stdout for port discovery");
 
             // does the line contain our port (we expect this specific output from substrate).
             let line_end = line
                 .rsplit_once("Listening for new connections on 127.0.0.1:")
-                .or_else(|| {
-                    line.rsplit_once("Running JSON-RPC WS server: addr=127.0.0.1:")
-                })
+                .or_else(|| line.rsplit_once("Running JSON-RPC WS server: addr=127.0.0.1:"))
                 .map(|(_, port_str)| port_str)?;
 
             // trim non-numeric chars from the end of the port part of the line.
             let port_str = line_end.trim_end_matches(|b: char| !b.is_ascii_digit());
 
             // expect to have a number here (the chars after '127.0.0.1:') and parse them into a u16.
-            let port_num = port_str.parse().unwrap_or_else(|_| {
-                panic!("valid port expected for log line, got '{port_str}'")
-            });
+            let port_num = port_str
+                .parse()
+                .unwrap_or_else(|_| panic!("valid port expected for log line, got '{port_str}'"));
 
             Some(port_num)
         })