diff --git a/src/test/clitools.rs b/src/test/clitools.rs
index 5e9a98590e..276ef203e9 100644
--- a/src/test/clitools.rs
+++ b/src/test/clitools.rs
@@ -291,7 +291,7 @@ impl Config {
     /// specified by `args` under the default environment.
     #[must_use]
     pub async fn expect<S: AsRef<OsStr> + Clone + Debug>(&self, args: impl AsRef<[S]>) -> Assert {
-        self.expect_with_env(args, &[]).await
+        self.expect_with_env(args, []).await
     }
 
     /// Returns an [`Assert`] object to check the output of running the command
diff --git a/tests/suite/cli_rustup.rs b/tests/suite/cli_rustup.rs
index 3f2f557b6a..407585a1d1 100644
--- a/tests/suite/cli_rustup.rs
+++ b/tests/suite/cli_rustup.rs
@@ -1327,7 +1327,7 @@ async fn show_toolchain_env() {
         .await
         .is_ok();
     cx.config
-        .expect_with_env(["rustup", "show"], &[("RUSTUP_TOOLCHAIN", "nightly")])
+        .expect_with_env(["rustup", "show"], [("RUSTUP_TOOLCHAIN", "nightly")])
         .await
         .extend_redactions([("[RUSTUP_DIR]", &cx.config.rustupdir.to_string())])
         .is_ok()
@@ -1353,7 +1353,7 @@ installed targets:
 async fn show_toolchain_env_not_installed() {
     let cx = CliTestContext::new(Scenario::SimpleV2).await;
     cx.config
-        .expect_with_env(["rustup", "show"], &[("RUSTUP_TOOLCHAIN", "nightly")])
+        .expect_with_env(["rustup", "show"], [("RUSTUP_TOOLCHAIN", "nightly")])
         .await
         .extend_redactions([("[RUSTUP_DIR]", &cx.config.rustupdir.to_string())])
         .is_ok()
@@ -3027,7 +3027,7 @@ error: no active toolchain
                 "show",
                 "active-toolchain",
             ],
-            &[("RUSTUP_TOOLCHAIN", &**env_tc)],
+            [("RUSTUP_TOOLCHAIN", &**env_tc)],
         )
         .await
         .extend_redactions([("[COMMAND_TC]", command_tc)])
diff --git a/tests/suite/cli_v2.rs b/tests/suite/cli_v2.rs
index ee99048b6c..fb2ab7bdc2 100644
--- a/tests/suite/cli_v2.rs
+++ b/tests/suite/cli_v2.rs
@@ -543,7 +543,7 @@ async fn plus_override_toolchain_err_handling() {
     cx.config
         .expect_with_env(
             ["rustc", "+beta", "--version"],
-            &[("RUSTUP_AUTO_INSTALL", "0")],
+            [("RUSTUP_AUTO_INSTALL", "0")],
         )
         .await
         .with_stderr(snapbox::str![[r#"
@@ -1191,7 +1191,7 @@ async fn list_targets_no_toolchain() {
     cx.config
         .expect_with_env(
             ["rustup", "target", "list", "--toolchain=nightly"],
-            &[("RUSTUP_AUTO_INSTALL", "0")],
+            [("RUSTUP_AUTO_INSTALL", "0")],
         )
         .await
         .with_stderr(snapbox::str![[r#"
@@ -1221,7 +1221,7 @@ error: toolchain 'nightly-[HOST_TRIPLE]' is not installed
     cx.config
         .expect_with_env(
             ["rustup", "target", "list", "--toolchain=nightly"],
-            &[("RUSTUP_AUTO_INSTALL", "0")],
+            [("RUSTUP_AUTO_INSTALL", "0")],
         )
         .await
         .with_stderr(snapbox::str![[r#"
@@ -1234,7 +1234,7 @@ error: toolchain 'nightly-[HOST_TRIPLE]' is not installed
     cx.config
         .expect_with_env(
             ["rustup", "target", "list", "--toolchain=nightly"],
-            &[("RUSTUP_AUTO_INSTALL", "1")],
+            [("RUSTUP_AUTO_INSTALL", "1")],
         )
         .await
         .is_ok();
@@ -1502,7 +1502,7 @@ async fn add_target_no_toolchain() {
                 CROSS_ARCH1,
                 "--toolchain=nightly",
             ],
-            &[("RUSTUP_AUTO_INSTALL", "0")],
+            [("RUSTUP_AUTO_INSTALL", "0")],
         )
         .await
         .with_stderr(snapbox::str![[r#"
@@ -1725,7 +1725,7 @@ async fn remove_target_no_toolchain() {
                 CROSS_ARCH1,
                 "--toolchain=nightly",
             ],
-            &[("RUSTUP_AUTO_INSTALL", "0")],
+            [("RUSTUP_AUTO_INSTALL", "0")],
         )
         .await
         .with_stderr(snapbox::str![[r#"