diff --git a/src/bin/set-version/errors.rs b/src/bin/set-version/errors.rs
index b29537742c..15bca470e3 100644
--- a/src/bin/set-version/errors.rs
+++ b/src/bin/set-version/errors.rs
@@ -1,8 +1,7 @@
 use std::fmt::Display;
 
 pub use cargo_edit::CargoResult;
-pub use cargo_edit::CliResult;
-pub use cargo_edit::Context;
+
 pub use cargo_edit::Error;
 
 /// User requested to downgrade a crate
diff --git a/src/manifest.rs b/src/manifest.rs
index 664db511b1..0dab347cfe 100644
--- a/src/manifest.rs
+++ b/src/manifest.rs
@@ -141,7 +141,7 @@ impl Manifest {
             path: &[String],
             insert_if_not_exists: bool,
         ) -> CargoResult<&'a mut toml_edit::Item> {
-            if let Some(segment) = path.get(0) {
+            if let Some(segment) = path.first() {
                 let value = if insert_if_not_exists {
                     input[&segment].or_insert(toml_edit::table())
                 } else {
diff --git a/src/version.rs b/src/version.rs
index b42f6952bb..5466672544 100644
--- a/src/version.rs
+++ b/src/version.rs
@@ -162,7 +162,7 @@ pub fn upgrade_requirement(req: &str, version: &semver::Version) -> CargoResult<
             new_req_text.remove(0);
         }
         // Validate contract
-        #[cfg(debug_assert)]
+        #[cfg(debug_assertions)]
         {
             assert!(
                 new_req.matches(version),
diff --git a/tests/cargo-upgrade/invalid_manifest/stderr.log b/tests/cargo-upgrade/invalid_manifest/stderr.log
index 2520158a9c..66720d2658 100644
--- a/tests/cargo-upgrade/invalid_manifest/stderr.log
+++ b/tests/cargo-upgrade/invalid_manifest/stderr.log
@@ -1,9 +1,6 @@
     Updating '[ROOTURL]/registry' index
 Error: `cargo metadata` exited with an error: error: failed to parse manifest at `[ROOT]/case/Cargo.toml`
 
-Caused by:
-  could not parse input as TOML
-
 Caused by:
   TOML parse error at line 1, column 6
     |
diff --git a/tests/cargo-upgrade/invalid_workspace_root_manifest/stderr.log b/tests/cargo-upgrade/invalid_workspace_root_manifest/stderr.log
index ff297b6e2b..db8df135ad 100644
--- a/tests/cargo-upgrade/invalid_workspace_root_manifest/stderr.log
+++ b/tests/cargo-upgrade/invalid_workspace_root_manifest/stderr.log
@@ -2,5 +2,5 @@
 Error: `cargo metadata` exited with an error: error: failed to parse manifest at `[ROOT]/case/Cargo.toml`
 
 Caused by:
-  could not parse input as TOML
+  TOML parse error at line 1, column 6
 ...