Address clippy issues (#409)

src/agent/Cargo.lock

@@ -2104,6 +2104,7 @@ dependencies = [
  "backoff",
  "log",
  "reqwest",
+ "tokio",
 ]
 
 [[package]]

src/agent/coverage/src/block/linux.rs

@@ -261,8 +261,8 @@ pub struct ModuleImage {
 impl ModuleImage {
     pub fn new(map: MemoryMap) -> Result<Self> {
         if let MMapPath::Path(..) = &map.pathname {
-            if map.perms.contains("x") {
-                return Ok(ModuleImage { map });
+            if map.perms.contains('x') {
+                Ok(ModuleImage { map })
             } else {
                 anyhow::bail!("memory mapping is not executable");
             }

src/agent/onefuzz-agent/build.rs

@@ -53,8 +53,8 @@ fn main() -> Result<(), Box<dyn Error>> {
     let sha = run_cmd(&["git", "rev-parse", "HEAD"])?;
 
     let hardcode_version = env::var("ONEFUZZ_SET_VERSION");
-    if hardcode_version.is_ok() {
-        print_values(hardcode_version.unwrap().as_ref(), &sha);
+    if let Ok(hardcode_version) = &hardcode_version {
+        print_values(hardcode_version, &sha);
         return Ok(());
     }
 

src/agent/onefuzz-agent/src/debug/libfuzzer_merge.rs

@@ -57,7 +57,7 @@ pub fn run(args: &clap::ArgMatches) -> Result<()> {
     let mut rt = Runtime::new()?;
     rt.block_on(merge_inputs(
         config.clone(),
-        vec![config.clone().inputs[0].path.clone()],
+        vec![config.inputs[0].path.clone()],
     ))?;
 
     Ok(())

src/agent/onefuzz-agent/src/tasks/fuzz/generator.rs

@@ -129,7 +129,7 @@ async fn generate_input(
 async fn start_fuzzing<'a>(
     config: &GeneratorConfig,
     corpus_dirs: Vec<impl AsRef<Path>>,
-    tester: Tester<'a>,
+    tester: Tester<'_>,
     heartbeat_client: Option<TaskHeartbeatClient>,
 ) -> Result<()> {
     let generator_tmp = "generator_tmp";

src/agent/onefuzz-agent/src/tasks/fuzz/supervisor.rs

@@ -270,7 +270,7 @@ mod tests {
             runtime_dir,
             PathBuf::from(afl_fuzz_exe),
             PathBuf::from(afl_test_binary),
-            fault_dir.clone(),
+            fault_dir,
             corpus_dir,
             &target_options,
             &supervisor_options,

src/agent/onefuzz-agent/src/tasks/generic/input_poller/tests.rs

@@ -122,8 +122,10 @@ async fn test_ready_poll() {
 
     let msg: Msg = 0;
 
-    let mut queue = TestQueue::default();
-    queue.pending = vec![msg];
+    let mut queue = TestQueue {
+        pending: vec![msg],
+        ..Default::default()
+    };
 
     task.trigger(Event::Poll(&mut queue)).await.unwrap();
 
@@ -140,8 +142,9 @@ async fn test_polled_some_parse() {
 
     task.set_state(State::Polled(Some(msg)));
 
-    let mut parser = TestParser::default();
-    parser.urls = vec![url.clone()]; // at index `msg`
+    let mut parser = TestParser {
+        urls: vec![url.clone()], // at index `msg`
+    };
 
     task.trigger(Event::Parse(&mut parser)).await.unwrap();
 
@@ -155,7 +158,6 @@ async fn test_polled_none_parse() {
     task.set_state(State::Polled(None));
 
     let mut parser = TestParser::default();
-    parser.urls = vec![];
 
     task.trigger(Event::Parse(&mut parser)).await.unwrap();
 

src/agent/onefuzz-agent/src/tasks/merge/generic.rs

@@ -124,7 +124,7 @@ async fn try_delete_blob(input_url: Url) -> Result<()> {
         .await
     {
         Ok(_) => Ok(()),
-        Err(err) => Err(err.into()),
+        Err(err) => Err(err),
     }
 }
 

src/agent/onefuzz-agent/src/tasks/merge/libfuzzer_merge.rs

@@ -176,6 +176,6 @@ async fn try_delete_blob(input_url: Url) -> Result<()> {
         .await
     {
         Ok(_) => Ok(()),
-        Err(err) => Err(err.into()),
+        Err(err) => Err(err),
     }
 }

src/agent/onefuzz-agent/src/tasks/report/crash_report.rs

@@ -153,7 +153,7 @@ impl CrashReport {
             call_stack: asan_log.call_stack().to_vec(),
             call_stack_sha256: asan_log.call_stack_sha256(),
             asan_log: Some(asan_log.text().to_string()),
-            scariness_score: asan_log.scariness_score().into(),
+            scariness_score: asan_log.scariness_score(),
             scariness_description: asan_log.scariness_description().to_owned(),
             task_id,
             job_id,

src/agent/onefuzz-supervisor/build.rs

@@ -53,8 +53,8 @@ fn main() -> Result<(), Box<dyn Error>> {
     let sha = run_cmd(&["git", "rev-parse", "HEAD"])?;
 
     let hardcode_version = env::var("ONEFUZZ_SET_VERSION");
-    if hardcode_version.is_ok() {
-        print_values(hardcode_version.unwrap().as_ref(), &sha);
+    if let Ok(hardcode_version) = &hardcode_version {
+        print_values(hardcode_version, &sha);
         return Ok(());
     }
 

src/agent/onefuzz-supervisor/src/config.rs

@@ -88,7 +88,7 @@ impl StaticConfig {
     pub fn from_env() -> Result<Self> {
         let instance_id = Uuid::parse_str(&std::env::var("ONEFUZZ_INSTANCE_ID")?)?;
         let client_id = Uuid::parse_str(&std::env::var("ONEFUZZ_CLIENT_ID")?)?;
-        let client_secret = std::env::var("ONEFUZZ_CLIENT_SECRET")?.into();
+        let client_secret = std::env::var("ONEFUZZ_CLIENT_SECRET")?;
         let tenant = std::env::var("ONEFUZZ_TENANT")?;
         let onefuzz_url = Url::parse(&std::env::var("ONEFUZZ_URL")?)?;
         let pool_name = std::env::var("ONEFUZZ_POOL")?;
@@ -111,13 +111,9 @@ impl StaticConfig {
             None
         };
 
-        let credentials = ClientCredentials::new(
-            client_id,
-            client_secret,
-            onefuzz_url.clone().to_string(),
-            tenant,
-        )
-        .into();
+        let credentials =
+            ClientCredentials::new(client_id, client_secret, onefuzz_url.to_string(), tenant)
+                .into();
 
         Ok(Self {
             instance_id,
@@ -240,7 +236,7 @@ impl Registration {
                     );
                     delay_with_jitter(REGISTRATION_RETRY_PERIOD).await;
                 }
-                Err(err) => return Err(err.into()),
+                Err(err) => return Err(err),
             }
         }
 

src/agent/onefuzz-supervisor/src/coordinator.rs

@@ -254,7 +254,7 @@ impl Coordinator {
         Ok(response)
     }
 
-    fn build_request<'a>(&self, request_type: RequestType<'a>) -> Result<Request> {
+    fn build_request(&self, request_type: RequestType<'_>) -> Result<Request> {
         match request_type {
             RequestType::PollCommands => self.poll_commands_request(),
             RequestType::ClaimCommand(message_id) => self.claim_command_request(message_id),

src/agent/onefuzz-supervisor/src/main.rs

@@ -62,20 +62,19 @@ fn main() -> Result<()> {
         Opt::Run(opt) => run(opt)?,
         Opt::Debug(opt) => debug::debug(opt)?,
         Opt::Licenses => licenses()?,
-        Opt::Version => version()?,
+        Opt::Version => version(),
     };
 
     Ok(())
 }
 
-fn version() -> Result<()> {
+fn version() {
     println!(
         "{} onefuzz:{} git:{}",
         crate_version!(),
         env!("ONEFUZZ_VERSION"),
         env!("GIT_VERSION")
     );
-    Ok(())
 }
 
 fn licenses() -> Result<()> {

src/agent/onefuzz-supervisor/src/worker.rs

@@ -38,11 +38,7 @@ impl Worker {
     }
 
     pub fn is_done(&self) -> bool {
-        if let Worker::Done(..) = self {
-            true
-        } else {
-            false
-        }
+        matches!(self, Worker::Done(..))
     }
 
     pub async fn update(

src/agent/onefuzz-supervisor/src/worker/tests.rs

@@ -22,11 +22,12 @@ impl Fixture {
     }
 
     fn child_running(&self) -> ChildDouble {
-        let mut child = ChildDouble::default();
-        child.id = 123; // Not default
-        child.stderr = "stderr".into();
-        child.stdout = "stdout".into();
-        child
+        ChildDouble {
+            id: 123,
+            stderr: "stderr".into(),
+            stdout: "stdout".into(),
+            ..Default::default()
+        }
     }
 
     fn child_exited(&self, exit_status: ExitStatus) -> ChildDouble {

src/agent/onefuzz/src/asan.rs

@@ -190,7 +190,8 @@ pub async fn check_asan_string(mut data: String) -> Result<Option<AsanLog>> {
 
 pub async fn check_asan_path(asan_dir: &Path) -> Result<Option<AsanLog>> {
     let mut entries = fs::read_dir(asan_dir).await?;
-    while let Some(file) = entries.next().await {
+    // there should be only up to one file in asan_dir
+    if let Some(file) = entries.next().await {
         let file = file?;
         let mut asan_text = fs::read_to_string(file.path()).await?;
         let asan = AsanLog::parse(asan_text.clone());

src/agent/onefuzz/src/fs.rs

@@ -163,7 +163,7 @@ mod tests {
         let mut len = 0;
         let mut entries = fs::read_dir(dir).await.unwrap();
 
-        while let Some(_) = entries.next().await {
+        while entries.next().await.is_some() {
             len += 1;
         }
 

src/agent/onefuzz/src/libfuzzer.rs

@@ -104,10 +104,11 @@ impl<'a> LibFuzzer<'a> {
         }
 
         // check if a max_time is already set
-        if let None = self
+        if self
             .options
             .iter()
             .find(|o| o.starts_with("-max_total_time"))
+            .is_none()
         {
             cmd.arg(format!("-max_total_time={}", DEFAULT_MAX_TOTAL_SECONDS));
         }
@@ -252,13 +253,13 @@ mod tests {
 
     #[test]
     fn test_libfuzzer_line_pulse() {
-        let line = r"#2097152        pulse  cov: 11 ft: 11 corp: 6/21b lim: 4096 exec/s: 699050 rss: 562Mb".into();
+        let line = r"#2097152        pulse  cov: 11 ft: 11 corp: 6/21b lim: 4096 exec/s: 699050 rss: 562Mb";
 
         let parsed = LibFuzzerLine::parse(line)
             .expect("parse error")
             .expect("no captures");
 
         assert_eq!(parsed.iters(), 2097152);
-        assert_eq!(parsed.execs_sec(), 699050.0);
+        assert_eq!(parsed.execs_sec(), 699050.0_f64);
     }
 }

src/agent/onefuzz/src/telemetry.rs

@@ -188,8 +188,8 @@ mod global {
         assert_eq!(last_state, UNSET, "unexpected telemetry client state");
 
         unsafe {
-            CLIENTS.instance = instance.map(|s| RwLock::new(s));
-            CLIENTS.shared = shared.map(|s| RwLock::new(s));
+            CLIENTS.instance = instance.map(RwLock::new);
+            CLIENTS.shared = shared.map(RwLock::new);
         }
 
         STATE.store(SET, SeqCst);

src/agent/onefuzz/src/triage.rs

@@ -167,7 +167,7 @@ impl Crash {
 
         let proc = stacktrace.trace(tid.as_raw() as u32)?;
 
-        let crashing_access = segv_access_addr(siginfo)?.map(|a| a.into());
+        let crashing_access = segv_access_addr(siginfo).map(|a| a.into());
 
         let maps = proc_maps::get_process_maps(tid.as_raw())?;
 
@@ -331,10 +331,10 @@ fn find_mapping(addr: u64, maps: &[MapRange]) -> Option<&MapRange> {
 // Only 4 signals populate the `si_addr` field of `siginfo_t`. See `sigaction(2)`.
 // On Linux, the most reliable one is SIGSEGV, which saves the address of the invalid
 // memory access.
-fn segv_access_addr(siginfo: Siginfo) -> Result<Option<u64>> {
+fn segv_access_addr(siginfo: Siginfo) -> Option<u64> {
     let is_segv = siginfo.si_signo == (SIGSEGV as i32);
 
-    let addr = if is_segv {
+    if is_segv {
         // Accessing a union, safe because we checked `si_signo`.
         let ptr = unsafe { siginfo.si_addr() };
 
@@ -343,9 +343,7 @@ fn segv_access_addr(siginfo: Siginfo) -> Result<Option<u64>> {
         Some(addr)
     } else {
         None
-    };
-
-    Ok(addr)
+    }
 }
 
 const CRASH_SIGNALS: &[Signal] = &[SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGTRAP, SIGABRT];

src/agent/reqwest-retry/Cargo.toml

@@ -10,4 +10,7 @@ anyhow = "1.0"
 async-trait = "0.1.36"
 reqwest = { version = "0.10", features = ["json", "stream"] }
 backoff = { version = "0.2.1", features = ["async-std"] }
-log = "0.4"
+log = "0.4"
+
+[dev-dependencies]
+tokio = { version = "0.2" }