CRC: use contains instead of find.is_some() and remove unnecessary import

Signed-off-by: Jacinta Ferrant <[email protected]>

Author: jferrant

stackslib/src/net/dns.rs

@@ -500,7 +500,7 @@ mod test {
         client.try_recv().unwrap();
         let resolved_err = client.poll_lookup("www.google.com", 80).unwrap().unwrap();
         assert!(
-            format!("{resolved_err:?}").find("timed out").is_some(),
+            format!("{resolved_err:?}").contains("timed out"),
             "{resolved_err:?}"
         );
         dns_thread_shutdown(client, thread_handle);

testnet/stacks-node/src/tests/neon_integrations.rs

@@ -3,7 +3,7 @@ use std::path::{Path, PathBuf};
 use std::sync::atomic::{AtomicU64, Ordering};
 use std::sync::{mpsc, Arc};
 use std::time::{Duration, Instant};
-use std::{cmp, env, fs, io, panic, thread};
+use std::{cmp, env, fs, io, thread};
 
 use clarity::vm::ast::stack_depth_checker::AST_CALL_STACK_DEPTH_BUFFER;
 use clarity::vm::ast::ASTRules;