diff --git a/ofborg-simple-build/src/main.rs b/ofborg-simple-build/src/main.rs
index 6583c77..3b22d49 100644
--- a/ofborg-simple-build/src/main.rs
+++ b/ofborg-simple-build/src/main.rs
@@ -18,7 +18,7 @@ fn main() {
 
     log::info!("Running build...");
     match nix.safely_build_attrs(
-        &Path::new("./"),
+        Path::new("./"),
         nix::File::DefaultNixpkgs,
         vec![String::from("hello")],
     ) {
diff --git a/ofborg/build.rs b/ofborg/build.rs
index 7a95722..2d96cd1 100644
--- a/ofborg/build.rs
+++ b/ofborg/build.rs
@@ -55,16 +55,10 @@ impl MetricType {
     }
 
     fn enum_index_types(&self) -> Vec<String> {
-        let event: &Metric;
-
-        match self {
-            MetricType::Ticker(ref i_event) => {
-                event = i_event;
-            }
-            MetricType::Counter(ref i_event) => {
-                event = i_event;
-            }
-        }
+        let event: &Metric = match self {
+            MetricType::Ticker(ref i_event) => i_event,
+            MetricType::Counter(ref i_event) => i_event,
+        };
 
         let fields: Vec<String> = event
             .fields
@@ -92,16 +86,10 @@ impl MetricType {
     }
 
     fn enum_index_names(&self) -> Vec<String> {
-        let event: &Metric;
-
-        match self {
-            MetricType::Ticker(ref i_event) => {
-                event = i_event;
-            }
-            MetricType::Counter(ref i_event) => {
-                event = i_event;
-            }
-        }
+        let event: &Metric = match self {
+            MetricType::Ticker(ref i_event) => i_event,
+            MetricType::Counter(ref i_event) => i_event,
+        };
 
         let fields: Vec<String> = event
             .fields
diff --git a/ofborg/src/ghevent/pullrequestevent.rs b/ofborg/src/ghevent/pullrequestevent.rs
index 179f2d4..54f7c68 100644
--- a/ofborg/src/ghevent/pullrequestevent.rs
+++ b/ofborg/src/ghevent/pullrequestevent.rs
@@ -68,7 +68,7 @@ mod tests {
         let data = include_str!("../../test-srcs/events/pr-changed-base.json");
 
         let pr: PullRequestEvent =
-            serde_json::from_str(&data.to_string()).expect("Should properly deserialize");
+            serde_json::from_str(data).expect("Should properly deserialize");
         assert_eq!(pr.action, PullRequestAction::Edited);
     }
 
@@ -77,7 +77,7 @@ mod tests {
         let data = include_str!("../../test-srcs/events/pr-converted-to-draft.json");
 
         let pr: PullRequestEvent =
-            serde_json::from_str(&data.to_string()).expect("Should properly deserialize");
+            serde_json::from_str(data).expect("Should properly deserialize");
         assert_eq!(pr.action, PullRequestAction::Unknown);
     }
 }
diff --git a/ofborg/src/maintainers.rs b/ofborg/src/maintainers.rs
index 4eac602..686ebfb 100644
--- a/ofborg/src/maintainers.rs
+++ b/ofborg/src/maintainers.rs
@@ -67,7 +67,7 @@ impl ImpactedMaintainers {
         argstrs.insert("changedpathsjson", path_file.path().to_str().unwrap());
 
         let mut cmd = nix.safely_evaluate_expr_cmd(
-            &checkout,
+            checkout,
             include_str!("./maintainers.nix"),
             argstrs,
             &[path_file.path(), attr_file.path()],
@@ -181,12 +181,12 @@ mod tests {
             .expect("clone should work");
 
         working_co
-            .checkout_origin_ref(&OsStr::new("master"))
+            .checkout_origin_ref(OsStr::new("master"))
             .unwrap();
 
         let paths = working_co.files_changed_from_head(&hash).unwrap();
 
-        working_co.checkout_ref(&OsStr::new(&hash)).unwrap();
+        working_co.checkout_ref(OsStr::new(&hash)).unwrap();
 
         let remote = env::var("NIX_REMOTE").unwrap_or("".to_owned());
         let nix = Nix::new(SYSTEM.to_owned(), remote, 1800, None);
diff --git a/ofborg/src/message/buildjob.rs b/ofborg/src/message/buildjob.rs
index f68bc79..6ec9329 100644
--- a/ofborg/src/message/buildjob.rs
+++ b/ofborg/src/message/buildjob.rs
@@ -47,7 +47,7 @@ impl BuildJob {
 }
 
 pub fn from(data: &[u8]) -> Result<BuildJob, serde_json::error::Error> {
-    serde_json::from_slice(&data)
+    serde_json::from_slice(data)
 }
 
 pub struct Actions {
diff --git a/ofborg/src/message/buildresult.rs b/ofborg/src/message/buildresult.rs
index 69768b4..5fbf18f 100644
--- a/ofborg/src/message/buildresult.rs
+++ b/ofborg/src/message/buildresult.rs
@@ -149,7 +149,7 @@ impl BuildResult {
                 ref status,
                 ref success,
                 ..
-            } => status.to_owned().unwrap_or_else(|| {
+            } => status.to_owned().unwrap_or({
                 // Fallback for old format.
                 match *success {
                     None => BuildStatus::Skipped,
diff --git a/ofborg/src/message/evaluationjob.rs b/ofborg/src/message/evaluationjob.rs
index 0f9818e..6e6130d 100644
--- a/ofborg/src/message/evaluationjob.rs
+++ b/ofborg/src/message/evaluationjob.rs
@@ -2,7 +2,7 @@ use crate::message::{Pr, Repo};
 use crate::worker;
 
 pub fn from(data: &[u8]) -> Result<EvaluationJob, serde_json::error::Error> {
-    serde_json::from_slice(&data)
+    serde_json::from_slice(data)
 }
 
 #[derive(Serialize, Deserialize, Debug)]
diff --git a/ofborg/src/nix.rs b/ofborg/src/nix.rs
index 1437835..2756a28 100644
--- a/ofborg/src/nix.rs
+++ b/ofborg/src/nix.rs
@@ -184,7 +184,7 @@ impl Nix {
             attrargs.push(argstr.to_owned());
         }
 
-        self.safe_command(&Operation::Evaluate, nixpkgs, &attrargs, &extra_paths)
+        self.safe_command(&Operation::Evaluate, nixpkgs, &attrargs, extra_paths)
     }
 
     pub fn safely_build_attrs(
@@ -233,7 +233,7 @@ impl Nix {
         args: Vec<String>,
         keep_stdout: bool,
     ) -> Result<fs::File, fs::File> {
-        self.run(self.safe_command(&op, nixpkgs, &args, &[]), keep_stdout)
+        self.run(self.safe_command(op, nixpkgs, &args, &[]), keep_stdout)
     }
 
     pub fn run(&self, mut cmd: Command, keep_stdout: bool) -> Result<fs::File, fs::File> {
@@ -431,8 +431,8 @@ mod tests {
 
     fn strip_ansi(string: &str) -> String {
         string
-            .replace("‘", "'")
-            .replace("’", "'")
+            .replace('‘', "'")
+            .replace('’', "'")
             .replace("\u{1b}[31;1m", "") // red
             .replace("\u{1b}[0m", "") // reset
     }
@@ -759,7 +759,7 @@ mod tests {
 
         eprintln!("{:?}", ret.1[1].1);
         assert_eq!(ret.1[1].0, "missing-attr");
-        let s = strip_ansi(&ret.1[1].1.last().unwrap());
+        let s = strip_ansi(ret.1[1].1.last().unwrap());
         assert_eq!(
             s.trim_start_matches("error: "),
             "attribute 'missing-attr' in selection path 'missing-attr' not found"
@@ -824,7 +824,7 @@ mod tests {
         assert_run(
             ret,
             Expect::Fail,
-            vec!["access to path", "is forbidden in restricted mode"],
+            vec!["access to absolute path", "is forbidden in restricted mode"],
         );
     }
 
@@ -860,7 +860,10 @@ mod tests {
         assert_run(
             ret,
             Expect::Fail,
-            vec!["access to path '/fake'", "is forbidden in restricted mode"],
+            vec![
+                "access to absolute path '/fake'",
+                "is forbidden in restricted mode",
+            ],
         );
     }
 }
diff --git a/ofborg/src/nixstats.rs b/ofborg/src/nixstats.rs
index 955ca16..ba3fc15 100644
--- a/ofborg/src/nixstats.rs
+++ b/ofborg/src/nixstats.rs
@@ -349,7 +349,7 @@ mod tests {
     use super::EvaluationStatsDiff;
     use serde_json;
 
-    const EXAMPLE: &'static str = r#"
+    const EXAMPLE: &str = r#"
 {
   "cpuTime": 135.2,
   "envs": {
@@ -395,7 +395,7 @@ mod tests {
 }
 "#;
 
-    const EXAMPLE2: &'static str = r#"
+    const EXAMPLE2: &str = r#"
 {
   "cpuTime": 132.897,
   "envs": {
@@ -485,7 +485,7 @@ mod tests {
         println!("left:\n{}", left);
         println!("right:\n{}", right);
 
-        let lines = left.split("\n").zip(right.split("\n"));
+        let lines = left.split('\n').zip(right.split('\n'));
 
         for (idx, (linea, lineb)) in lines.enumerate() {
             assert_eq!(linea, lineb, "Line {}", idx);
diff --git a/ofborg/src/outpathdiff.rs b/ofborg/src/outpathdiff.rs
index e482b5d..8d88894 100644
--- a/ofborg/src/outpathdiff.rs
+++ b/ofborg/src/outpathdiff.rs
@@ -58,11 +58,11 @@ impl OutPathDiff {
 
                 let removed: Vec<PackageArch> = orig_set
                     .difference(&cur_set)
-                    .map(|ref p| (**p).clone())
+                    .map(|p| (*p).clone())
                     .collect();
                 let added: Vec<PackageArch> = cur_set
                     .difference(&orig_set)
-                    .map(|ref p| (**p).clone())
+                    .map(|p| (*p).clone())
                     .collect();
                 Some((removed, added))
             } else {
@@ -149,7 +149,7 @@ mod tests {
     use super::*;
     use std::io::Cursor;
 
-    const TEST_LINES: &'static str = "
+    const TEST_LINES: &str = "
 kindlegen.x86_64-darwin                                                    /nix/store/sgabv7byhan6b0rjspd3p1bd7yw91f30-kindlegen-2.9
 python27Packages.pyinotify.i686-linux                                      /nix/store/rba0hbq6i4camvhpj9723dvs4b511ryn-python2.7-pyinotify-0.9.6
 pan.i686-linux                                                             /nix/store/6djnw9s2z5iy0c741qa8yk0k2v6bxrra-pan-0.139
diff --git a/ofborg/src/stats.rs b/ofborg/src/stats.rs
index e907ec4..75c9717 100644
--- a/ofborg/src/stats.rs
+++ b/ofborg/src/stats.rs
@@ -41,7 +41,7 @@ impl SysEvents for RabbitMq<lapin::Channel> {
                 .channel
                 .basic_publish(
                     &String::from("stats"),
-                    &"".to_owned(),
+                    "",
                     BasicPublishOptions::default(),
                     serde_json::to_string(&EventMessage {
                         sender: self.identity.clone(),
diff --git a/ofborg/src/systems.rs b/ofborg/src/systems.rs
index 0454455..b646051 100644
--- a/ofborg/src/systems.rs
+++ b/ofborg/src/systems.rs
@@ -19,7 +19,7 @@ impl std::fmt::Display for System {
 
 impl System {
     pub fn as_build_destination(&self) -> (Option<String>, Option<String>) {
-        (None, Some(format!("build-inputs-{}", self.to_string())))
+        (None, Some(format!("build-inputs-{}", self)))
     }
 
     pub fn can_run_nixos_tests(&self) -> bool {
diff --git a/ofborg/src/tagger.rs b/ofborg/src/tagger.rs
index 8b14b71..2a9e2f5 100644
--- a/ofborg/src/tagger.rs
+++ b/ofborg/src/tagger.rs
@@ -42,7 +42,7 @@ impl StdenvTagger {
         }
 
         for tag in &self.selected {
-            if !self.possible.contains(&tag) {
+            if !self.possible.contains(tag) {
                 panic!(
                     "Tried to add label {} but it isn't in the possible list!",
                     tag
@@ -58,7 +58,7 @@ impl StdenvTagger {
     pub fn tags_to_remove(&self) -> Vec<String> {
         let mut remove = self.possible.clone();
         for tag in &self.selected {
-            let pos = remove.binary_search(&tag).unwrap();
+            let pos = remove.binary_search(tag).unwrap();
             remove.remove(pos);
         }
 
@@ -188,7 +188,7 @@ impl RebuildTagger {
         );
 
         for tag in &self.selected {
-            if !self.possible.contains(&tag) {
+            if !self.possible.contains(tag) {
                 panic!(
                     "Tried to add label {} but it isn't in the possible list!",
                     tag
diff --git a/ofborg/src/tasks/build.rs b/ofborg/src/tasks/build.rs
index 597d9cc..e24d51d 100644
--- a/ofborg/src/tasks/build.rs
+++ b/ofborg/src/tasks/build.rs
@@ -281,7 +281,7 @@ impl notifyworker::SimpleNotifyWorker for BuildWorker {
         let span = debug_span!("job", pr = ?job.pr.number);
         let _enter = span.enter();
 
-        let mut actions = self.actions(&job, notifier);
+        let mut actions = self.actions(job, notifier);
 
         if job.attrs.is_empty() {
             debug!("No attrs to build");
@@ -408,14 +408,14 @@ mod tests {
     fn make_worker(path: &Path) -> BuildWorker {
         let cloner = checkout::cached_cloner(path);
         let nix = nix();
-        let worker = BuildWorker::new(
+        
+
+        BuildWorker::new(
             cloner,
             nix,
             SYSTEM.to_owned(),
             "cargo-test-build".to_owned(),
-        );
-
-        worker
+        )
     }
 
     fn make_pr_repo(bare: &Path, co: &Path) -> String {
@@ -435,8 +435,8 @@ mod tests {
 
     fn strip_escaped_ansi(string: &str) -> String {
         string
-            .replace("‘", "'")
-            .replace("’", "'")
+            .replace('‘', "'")
+            .replace('’', "'")
             .replace("\\u001b[31;1m", "") // red
             .replace("\\u001b[0m", "") // reset
     }
@@ -451,21 +451,19 @@ mod tests {
                     eprintln!("{}", text);
                     if text.contains(text_to_match) {
                         println!(" ok");
-                        return true;
+                        true
                     } else {
                         println!(" notContains: {}", text);
-                        return false;
+                        false
                     }
                 }
                 e => {
                     println!(" notPublish: {:?}", e);
-                    return false;
+                    false
                 }
             })
-            .expect(&format!(
-                "Actions should contain a job matching {}, after the previous check",
-                text_to_match,
-            ));
+            .unwrap_or_else(|| panic!("Actions should contain a job matching {}, after the previous check",
+                text_to_match));
     }
 
     #[test]
diff --git a/ofborg/src/tasks/eval/nixpkgs.rs b/ofborg/src/tasks/eval/nixpkgs.rs
index 5ca83bf..a3c4c4d 100644
--- a/ofborg/src/tasks/eval/nixpkgs.rs
+++ b/ofborg/src/tasks/eval/nixpkgs.rs
@@ -38,7 +38,7 @@ fn label_from_title(title: &str) -> Vec<String> {
         .iter()
         .filter(|(word, _label)| {
             let re = Regex::new(&format!("\\b{}\\b", word)).unwrap();
-            re.is_match(&title)
+            re.is_match(title)
         })
         .map(|(_word, label)| (*label).into())
         .collect();
@@ -98,7 +98,7 @@ impl<'a> NixpkgsStrategy<'a> {
             return;
         }
 
-        update_labels(&self.issue_ref, &labels, &[]);
+        update_labels(self.issue_ref, &labels, &[]);
     }
 
     fn check_stdenvs_before(&mut self, dir: &Path) {
@@ -120,7 +120,7 @@ impl<'a> NixpkgsStrategy<'a> {
                 stdenvtagger.changed(stdenvs.changed());
             }
             update_labels(
-                &self.issue_ref,
+                self.issue_ref,
                 &stdenvtagger.tags_to_add(),
                 &stdenvtagger.tags_to_remove(),
             );
@@ -199,7 +199,7 @@ impl<'a> NixpkgsStrategy<'a> {
                 let mut addremovetagger = PkgsAddedRemovedTagger::new();
                 addremovetagger.changed(&removed, &added);
                 update_labels(
-                    &self.issue_ref,
+                    self.issue_ref,
                     &addremovetagger.tags_to_add(),
                     &addremovetagger.tags_to_remove(),
                 );
@@ -218,14 +218,14 @@ impl<'a> NixpkgsStrategy<'a> {
             if let Some(attrs) = rebuildsniff.calculate_rebuild() {
                 if !attrs.is_empty() {
                     overall_status.set_url(self.gist_changed_paths(&attrs));
-                    self.record_impacted_maintainers(&dir, &attrs)?;
+                    self.record_impacted_maintainers(dir, &attrs)?;
                 }
 
                 rebuild_tags.parse_attrs(attrs);
             }
 
             update_labels(
-                &self.issue_ref,
+                self.issue_ref,
                 &rebuild_tags.tags_to_add(),
                 &rebuild_tags.tags_to_remove(),
             );
@@ -235,7 +235,7 @@ impl<'a> NixpkgsStrategy<'a> {
 
     fn gist_changed_paths(&self, attrs: &[PackageArch]) -> Option<String> {
         make_gist(
-            &self.gists,
+            self.gists,
             "Changed Paths",
             Some("".to_owned()),
             attrs
@@ -255,13 +255,13 @@ impl<'a> NixpkgsStrategy<'a> {
         if let Some(ref changed_paths) = self.changed_paths {
             let m = ImpactedMaintainers::calculate(
                 &self.nix,
-                &dir.to_path_buf(),
-                &changed_paths,
+                dir,
+                changed_paths,
                 &changed_attributes,
             );
 
             let gist_url = make_gist(
-                &self.gists,
+                self.gists,
                 "Potential Maintainers",
                 Some("".to_owned()),
                 match m {
@@ -298,12 +298,12 @@ impl<'a> NixpkgsStrategy<'a> {
             status.set(hubcaps::statuses::State::Success)?;
 
             if let Ok(ref maint) = m {
-                request_reviews(&maint, &self.pull);
+                request_reviews(maint, self.pull);
                 let mut maint_tagger = MaintainerPrTagger::new();
                 maint_tagger
                     .record_maintainer(&self.issue.user.login, &maint.maintainers_by_package());
                 update_labels(
-                    &self.issue_ref,
+                    self.issue_ref,
                     &maint_tagger.tags_to_add(),
                     &maint_tagger.tags_to_remove(),
                 );
@@ -332,7 +332,7 @@ impl<'a> NixpkgsStrategy<'a> {
                     let mut try_build: Vec<String> = pkgs
                         .keys()
                         .map(|pkgarch| pkgarch.package.clone())
-                        .filter(|pkg| possibly_touched_packages.contains(&pkg))
+                        .filter(|pkg| possibly_touched_packages.contains(pkg))
                         .flat_map(|pkg| vec![pkg.clone(), pkg + ".passthru.tests"].into_iter())
                         .collect();
                     try_build.sort();
@@ -360,7 +360,7 @@ impl<'a> NixpkgsStrategy<'a> {
                     }
                 }
                 Err(out) => {
-                    status.set_url(make_gist(&self.gists, "Meta Check", None, out.display()));
+                    status.set_url(make_gist(self.gists, "Meta Check", None, out.display()));
                     status.set(hubcaps::statuses::State::Failure)?;
                     Err(Error::Fail(String::from(
                         "Failed to validate package metadata.",
@@ -411,7 +411,7 @@ impl<'a> EvaluationStrategy for NixpkgsStrategy<'a> {
 
     fn merge_conflict(&mut self) {
         update_labels(
-            &self.issue_ref,
+            self.issue_ref,
             &["2.status: merge conflict".to_owned()],
             &[],
         );
@@ -419,7 +419,7 @@ impl<'a> EvaluationStrategy for NixpkgsStrategy<'a> {
 
     fn after_merge(&mut self, status: &mut CommitStatus) -> StepResult<()> {
         update_labels(
-            &self.issue_ref,
+            self.issue_ref,
             &[],
             &["2.status: merge conflict".to_owned()],
         );
@@ -577,10 +577,10 @@ impl<'a> EvaluationStrategy for NixpkgsStrategy<'a> {
         )?;
 
         self.update_new_package_labels();
-        self.update_rebuild_labels(&dir, status)?;
+        self.update_rebuild_labels(dir, status)?;
         let checks = self.performance_stats();
 
-        let builds = self.check_meta_queue_builds(&dir)?;
+        let builds = self.check_meta_queue_builds(dir)?;
         Ok(EvaluationComplete { builds, checks })
     }
 }
diff --git a/ofborg/src/tasks/eval/stdenvs.rs b/ofborg/src/tasks/eval/stdenvs.rs
index fc9327a..dbd23b1 100644
--- a/ofborg/src/tasks/eval/stdenvs.rs
+++ b/ofborg/src/tasks/eval/stdenvs.rs
@@ -132,7 +132,7 @@ mod tests {
 
         let remote = env::var("NIX_REMOTE").unwrap_or("".to_owned());
         let nix = nix::Nix::new(String::from("x86_64-linux"), remote, 1200, None);
-        let mut stdenv = Stdenvs::new(nix.clone(), PathBuf::from(nixpkgs.trim_end()));
+        let mut stdenv = Stdenvs::new(nix, PathBuf::from(nixpkgs.trim_end()));
         stdenv.identify(System::X8664Linux, StdenvFrom::Before);
         stdenv.identify(System::X8664Darwin, StdenvFrom::Before);
 
diff --git a/ofborg/src/tasks/evaluate.rs b/ofborg/src/tasks/evaluate.rs
index 083a609..d9b1da0 100644
--- a/ofborg/src/tasks/evaluate.rs
+++ b/ofborg/src/tasks/evaluate.rs
@@ -236,18 +236,18 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
                 // There was an error during eval, but we successfully
                 // updated the PR.
 
-                self.actions().skip(&self.job)
+                self.actions().skip(self.job)
             }
             Err(Err(CommitStatusError::ExpiredCreds(e))) => {
                 error!("Failed writing commit status: creds expired: {:?}", e);
-                self.actions().retry_later(&self.job)
+                self.actions().retry_later(self.job)
             }
             Err(Err(CommitStatusError::MissingSha(e))) => {
                 error!(
                     "Failed writing commit status: commit sha was force-pushed away: {:?}",
                     e
                 );
-                self.actions().skip(&self.job)
+                self.actions().skip(self.job)
             }
 
             Err(Err(CommitStatusError::Error(cswerr))) => {
@@ -258,7 +258,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
                 let issue_ref = self.repo.issue(self.job.pr.number);
                 update_labels(&issue_ref, &[String::from("ofborg-internal-error")], &[]);
 
-                self.actions().skip(&self.job)
+                self.actions().skip(self.job)
             }
         }
     }
@@ -281,7 +281,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
                 if iss.state == "closed" {
                     self.events.notify(Event::IssueAlreadyClosed);
                     info!("Skipping {} because it is closed", job.pr.number);
-                    return Ok(self.actions().skip(&job));
+                    return Ok(self.actions().skip(job));
                 }
 
                 if issue_is_wip(&iss) {
@@ -300,13 +300,13 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
                 self.events.notify(Event::IssueFetchFailed);
                 error!("Error fetching {}!", job.pr.number);
                 error!("E: {:?}", e);
-                return Ok(self.actions().skip(&job));
+                return Ok(self.actions().skip(job));
             }
         };
 
         let mut evaluation_strategy: Box<dyn eval::EvaluationStrategy> = if job.is_nixpkgs() {
             Box::new(eval::NixpkgsStrategy::new(
-                &job,
+                job,
                 &pull,
                 &issue,
                 &issue_ref,
@@ -359,7 +359,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
             )?;
 
             info!("PR targets a nixos-* or nixpkgs-* branch");
-            return Ok(self.actions().skip(&job));
+            return Ok(self.actions().skip(job));
         };
 
         overall_status.set_with_description(
@@ -369,7 +369,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
         info!("Checking out target branch {}", &target_branch);
         let refpath = co.checkout_origin_ref(target_branch.as_ref()).unwrap();
 
-        evaluation_strategy.on_target_branch(&Path::new(&refpath), &mut overall_status)?;
+        evaluation_strategy.on_target_branch(Path::new(&refpath), &mut overall_status)?;
 
         let target_branch_rebuild_sniff_start = Instant::now();
 
@@ -389,7 +389,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
                 .set_with_description("Commit not found", hubcaps::statuses::State::Error)?;
 
             info!("Commit {} doesn't exist", job.pr.head_sha);
-            return Ok(self.actions().skip(&job));
+            return Ok(self.actions().skip(job));
         }
 
         evaluation_strategy.after_fetch(&co)?;
@@ -404,7 +404,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
 
             evaluation_strategy.merge_conflict();
 
-            return Ok(self.actions().skip(&job));
+            return Ok(self.actions().skip(job));
         }
 
         evaluation_strategy.after_merge(&mut overall_status)?;
@@ -464,7 +464,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
 
         if eval_results {
             let complete = evaluation_strategy
-                .all_evaluations_passed(&Path::new(&refpath), &mut overall_status)?;
+                .all_evaluations_passed(Path::new(&refpath), &mut overall_status)?;
 
             send_check_statuses(complete.checks, &repo);
             response.extend(schedule_builds(complete.builds, auto_schedule_build_archs));
@@ -478,7 +478,7 @@ impl<'a, E: stats::SysEvents + 'static> OneEval<'a, E> {
         self.events.notify(Event::TaskEvaluationCheckComplete);
 
         info!("Evaluations done!");
-        Ok(self.actions().done(&job, response))
+        Ok(self.actions().done(job, response))
     }
 }
 
@@ -628,7 +628,7 @@ pub fn get_prefix<'a>(
     sha: &'a str,
 ) -> Result<&'a str, CommitStatusError> {
     if statuses
-        .list(&sha)?
+        .list(sha)?
         .iter()
         .any(|s| s.context.starts_with("grahamcofborg-"))
     {
diff --git a/ofborg/src/tasks/evaluationfilter.rs b/ofborg/src/tasks/evaluationfilter.rs
index 2995101..6e34e7d 100644
--- a/ofborg/src/tasks/evaluationfilter.rs
+++ b/ofborg/src/tasks/evaluationfilter.rs
@@ -108,7 +108,7 @@ mod tests {
         let data = include_str!("../../test-srcs/events/pr-changed-base.json");
 
         let job: ghevent::PullRequestEvent =
-            serde_json::from_str(&data.to_string()).expect("Should properly deserialize");
+            serde_json::from_str(data).expect("Should properly deserialize");
 
         let mut worker = EvaluationFilterWorker::new(acl::Acl::new(
             vec!["nixos/nixpkgs".to_owned()],
diff --git a/ofborg/src/tasks/githubcommentposter.rs b/ofborg/src/tasks/githubcommentposter.rs
index 0cdad0d..84d23e7 100644
--- a/ofborg/src/tasks/githubcommentposter.rs
+++ b/ofborg/src/tasks/githubcommentposter.rs
@@ -31,7 +31,7 @@ impl PostableEvent {
                 Ok(e) => Ok(PostableEvent::BuildFinished(e)),
                 Err(e) => Err(format!(
                     "Failed to deserialize PostableEvent: {:?}, err: {:}",
-                    String::from_utf8_lossy(&bytes.to_vec()),
+                    String::from_utf8_lossy(bytes),
                     e
                 )),
             },
@@ -54,7 +54,7 @@ impl worker::SimpleWorker for GitHubCommentPoster {
             PostableEvent::BuildQueued(queued_job) => {
                 repo = queued_job.job.repo.clone();
                 for architecture in queued_job.architectures.iter() {
-                    checks.push(job_to_check(&queued_job.job, &architecture, Utc::now()));
+                    checks.push(job_to_check(&queued_job.job, architecture, Utc::now()));
                 }
                 queued_job.job.pr.to_owned()
             }
@@ -140,7 +140,7 @@ fn result_to_check(result: &LegacyBuildResult, timestamp: DateTime<Utc>) -> Chec
 
     let mut summary: Vec<String> = vec![];
     if let Some(ref attempted) = result.attempted_attrs {
-        summary.extend(list_segment("Attempted", &attempted));
+        summary.extend(list_segment("Attempted", attempted));
     }
 
     if result.status == BuildStatus::TimedOut {
@@ -153,7 +153,7 @@ fn result_to_check(result: &LegacyBuildResult, timestamp: DateTime<Utc>) -> Chec
                 "The following builds were skipped because they don't evaluate on {}",
                 result.system
             ),
-            &skipped,
+            skipped,
         ));
     }
 
diff --git a/ofborg/src/tasks/log_message_collector.rs b/ofborg/src/tasks/log_message_collector.rs
index c49963d..be4113a 100644
--- a/ofborg/src/tasks/log_message_collector.rs
+++ b/ofborg/src/tasks/log_message_collector.rs
@@ -63,12 +63,12 @@ impl LogMessageCollector {
     }
 
     pub fn write_metadata(&mut self, from: &LogFrom, data: &BuildLogStart) -> Result<(), String> {
-        let metapath = self.path_for_metadata(&from)?;
+        let metapath = self.path_for_metadata(from)?;
         let mut fp = self.open_file(&metapath)?;
 
         match serde_json::to_string(data) {
             Ok(data) => {
-                if let Err(e) = fp.write(&data.as_bytes()) {
+                if let Err(e) = fp.write(data.as_bytes()) {
                     Err(format!("Failed to write metadata: {:?}", e))
                 } else {
                     Ok(())
@@ -79,12 +79,12 @@ impl LogMessageCollector {
     }
 
     pub fn write_result(&mut self, from: &LogFrom, data: &BuildResult) -> Result<(), String> {
-        let path = self.path_for_result(&from)?;
+        let path = self.path_for_result(from)?;
         let mut fp = self.open_file(&path)?;
 
         match serde_json::to_string(data) {
             Ok(data) => {
-                if let Err(e) = fp.write(&data.as_bytes()) {
+                if let Err(e) = fp.write(data.as_bytes()) {
                     Err(format!("Failed to write result: {:?}", e))
                 } else {
                     Ok(())
@@ -95,17 +95,17 @@ impl LogMessageCollector {
     }
 
     pub fn handle_for(&mut self, from: &LogFrom) -> Result<&mut LineWriter, String> {
-        if self.handles.contains_key(&from) {
+        if self.handles.contains_key(from) {
             Ok(self
                 .handles
-                .get_mut(&from)
+                .get_mut(from)
                 .expect("handles just contained the key"))
         } else {
-            let logpath = self.path_for_log(&from)?;
+            let logpath = self.path_for_log(from)?;
             let fp = self.open_file(&logpath)?;
             let writer = LineWriter::new(fp);
             self.handles.insert(from.clone(), writer);
-            if let Some(handle) = self.handles.get_mut(&from) {
+            if let Some(handle) = self.handles.get_mut(from) {
                 Ok(handle)
             } else {
                 Err(String::from(
@@ -213,7 +213,7 @@ impl worker::SimpleWorker for LogMessageCollector {
     fn consumer(&mut self, job: &LogMessage) -> worker::Actions {
         match job.message {
             MsgType::Start(ref start) => {
-                self.write_metadata(&job.from, &start)
+                self.write_metadata(&job.from, start)
                     .expect("failed to write metadata");
             }
             MsgType::Msg(ref message) => {
@@ -222,7 +222,7 @@ impl worker::SimpleWorker for LogMessageCollector {
                 handle.write_to_line((message.line_number - 1) as usize, &message.output);
             }
             MsgType::Finish(ref finish) => {
-                self.write_result(&job.from, &finish)
+                self.write_result(&job.from, finish)
                     .expect("failed to write result");
             }
         }
@@ -409,7 +409,7 @@ mod tests {
             logmsg.attempt_id = String::from("my-other-attempt");
             logmsg.line_number = 3;
             logmsg.output = String::from("line-3");
-            job.message = MsgType::Msg(logmsg.clone());
+            job.message = MsgType::Msg(logmsg);
             assert_eq!(vec![worker::Action::Ack], worker.consumer(&job));
 
             assert_eq!(