diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs
index fa5073e3304d7..2a7ec544f9e2e 100644
--- a/library/core/src/fmt/mod.rs
+++ b/library/core/src/fmt/mod.rs
@@ -1355,11 +1355,11 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{}", Foo::new(2)), "2");
-    /// assert_eq!(&format!("{}", Foo::new(-1)), "-1");
-    /// assert_eq!(&format!("{}", Foo::new(0)), "0");
-    /// assert_eq!(&format!("{:#}", Foo::new(-1)), "-Foo 1");
-    /// assert_eq!(&format!("{:0>#8}", Foo::new(-1)), "00-Foo 1");
+    /// assert_eq!(format!("{}", Foo::new(2)), "2");
+    /// assert_eq!(format!("{}", Foo::new(-1)), "-1");
+    /// assert_eq!(format!("{}", Foo::new(0)), "0");
+    /// assert_eq!(format!("{:#}", Foo::new(-1)), "-Foo 1");
+    /// assert_eq!(format!("{:0>#8}", Foo::new(-1)), "00-Foo 1");
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn pad_integral(&mut self, is_nonnegative: bool, prefix: &str, buf: &str) -> Result {
@@ -1452,8 +1452,8 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{Foo:<4}"), "Foo ");
-    /// assert_eq!(&format!("{Foo:0>4}"), "0Foo");
+    /// assert_eq!(format!("{Foo:<4}"), "Foo ");
+    /// assert_eq!(format!("{Foo:0>4}"), "0Foo");
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn pad(&mut self, s: &str) -> Result {
@@ -1636,8 +1636,8 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{Foo}"), "Foo");
-    /// assert_eq!(&format!("{Foo:0>8}"), "Foo");
+    /// assert_eq!(format!("{Foo}"), "Foo");
+    /// assert_eq!(format!("{Foo:0>8}"), "Foo");
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn write_str(&mut self, data: &str) -> Result {
@@ -1659,8 +1659,8 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{}", Foo(-1)), "Foo -1");
-    /// assert_eq!(&format!("{:0>8}", Foo(2)), "Foo 2");
+    /// assert_eq!(format!("{}", Foo(-1)), "Foo -1");
+    /// assert_eq!(format!("{:0>8}", Foo(2)), "Foo 2");
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result {
@@ -1703,8 +1703,8 @@ impl<'a> Formatter<'a> {
     /// }
     ///
     /// // We set alignment to the right with ">".
-    /// assert_eq!(&format!("{Foo:G>3}"), "GGG");
-    /// assert_eq!(&format!("{Foo:t>6}"), "tttttt");
+    /// assert_eq!(format!("{Foo:G>3}"), "GGG");
+    /// assert_eq!(format!("{Foo:t>6}"), "tttttt");
     /// ```
     #[must_use]
     #[stable(feature = "fmt_flags", since = "1.5.0")]
@@ -1738,10 +1738,10 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{Foo:<}"), "left");
-    /// assert_eq!(&format!("{Foo:>}"), "right");
-    /// assert_eq!(&format!("{Foo:^}"), "center");
-    /// assert_eq!(&format!("{Foo}"), "into the void");
+    /// assert_eq!(format!("{Foo:<}"), "left");
+    /// assert_eq!(format!("{Foo:>}"), "right");
+    /// assert_eq!(format!("{Foo:^}"), "center");
+    /// assert_eq!(format!("{Foo}"), "into the void");
     /// ```
     #[must_use]
     #[stable(feature = "fmt_flags_align", since = "1.28.0")]
@@ -1767,7 +1767,7 @@ impl<'a> Formatter<'a> {
     ///     fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
     ///         if let Some(width) = formatter.width() {
     ///             // If we received a width, we use it
-    ///             write!(formatter, "{:width$}", &format!("Foo({})", self.0), width = width)
+    ///             write!(formatter, "{:width$}", format!("Foo({})", self.0), width = width)
     ///         } else {
     ///             // Otherwise we do nothing special
     ///             write!(formatter, "Foo({})", self.0)
@@ -1775,8 +1775,8 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{:10}", Foo(23)), "Foo(23)   ");
-    /// assert_eq!(&format!("{}", Foo(23)), "Foo(23)");
+    /// assert_eq!(format!("{:10}", Foo(23)), "Foo(23)   ");
+    /// assert_eq!(format!("{}", Foo(23)), "Foo(23)");
     /// ```
     #[must_use]
     #[stable(feature = "fmt_flags", since = "1.5.0")]
@@ -1806,8 +1806,8 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{:.4}", Foo(23.2)), "Foo(23.2000)");
-    /// assert_eq!(&format!("{}", Foo(23.2)), "Foo(23.20)");
+    /// assert_eq!(format!("{:.4}", Foo(23.2)), "Foo(23.2000)");
+    /// assert_eq!(format!("{}", Foo(23.2)), "Foo(23.20)");
     /// ```
     #[must_use]
     #[stable(feature = "fmt_flags", since = "1.5.0")]
@@ -1837,9 +1837,9 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{:+}", Foo(23)), "Foo(+23)");
-    /// assert_eq!(&format!("{:+}", Foo(-23)), "Foo(-23)");
-    /// assert_eq!(&format!("{}", Foo(23)), "Foo(23)");
+    /// assert_eq!(format!("{:+}", Foo(23)), "Foo(+23)");
+    /// assert_eq!(format!("{:+}", Foo(-23)), "Foo(-23)");
+    /// assert_eq!(format!("{}", Foo(23)), "Foo(23)");
     /// ```
     #[must_use]
     #[stable(feature = "fmt_flags", since = "1.5.0")]
@@ -1867,8 +1867,8 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{:-}", Foo(23)), "-Foo(23)");
-    /// assert_eq!(&format!("{}", Foo(23)), "Foo(23)");
+    /// assert_eq!(format!("{:-}", Foo(23)), "-Foo(23)");
+    /// assert_eq!(format!("{}", Foo(23)), "Foo(23)");
     /// ```
     #[must_use]
     #[stable(feature = "fmt_flags", since = "1.5.0")]
@@ -1895,8 +1895,8 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{:#}", Foo(23)), "Foo(23)");
-    /// assert_eq!(&format!("{}", Foo(23)), "23");
+    /// assert_eq!(format!("{:#}", Foo(23)), "Foo(23)");
+    /// assert_eq!(format!("{}", Foo(23)), "23");
     /// ```
     #[must_use]
     #[stable(feature = "fmt_flags", since = "1.5.0")]
@@ -1922,7 +1922,7 @@ impl<'a> Formatter<'a> {
     ///     }
     /// }
     ///
-    /// assert_eq!(&format!("{:04}", Foo(23)), "23");
+    /// assert_eq!(format!("{:04}", Foo(23)), "23");
     /// ```
     #[must_use]
     #[stable(feature = "fmt_flags", since = "1.5.0")]
diff --git a/library/core/tests/num/dec2flt/mod.rs b/library/core/tests/num/dec2flt/mod.rs
index c4e105cba600d..a2b9bb551e677 100644
--- a/library/core/tests/num/dec2flt/mod.rs
+++ b/library/core/tests/num/dec2flt/mod.rs
@@ -15,7 +15,7 @@ macro_rules! test_literal {
         for input in inputs {
             assert_eq!(input.parse(), Ok(x64));
             assert_eq!(input.parse(), Ok(x32));
-            let neg_input = &format!("-{input}");
+            let neg_input = format!("-{input}");
             assert_eq!(neg_input.parse(), Ok(-x64));
             assert_eq!(neg_input.parse(), Ok(-x32));
         }
diff --git a/library/portable-simd/crates/core_simd/examples/spectral_norm.rs b/library/portable-simd/crates/core_simd/examples/spectral_norm.rs
index 012182e090b9f..d576bd0ccee03 100644
--- a/library/portable-simd/crates/core_simd/examples/spectral_norm.rs
+++ b/library/portable-simd/crates/core_simd/examples/spectral_norm.rs
@@ -69,7 +69,7 @@ fn dot(x: &[f64], y: &[f64]) -> f64 {
 #[cfg(test)]
 #[test]
 fn test() {
-    assert_eq!(&format!("{:.9}", spectral_norm(100)), "1.274219991");
+    assert_eq!(format!("{:.9}", spectral_norm(100)), "1.274219991");
 }
 
 fn main() {
diff --git a/library/std/src/io/error/tests.rs b/library/std/src/io/error/tests.rs
index 16c634e9afd50..9aea62a5b940c 100644
--- a/library/std/src/io/error/tests.rs
+++ b/library/std/src/io/error/tests.rs
@@ -190,5 +190,5 @@ fn test_std_io_error_downcast() {
     let io_error = io_error.downcast::<E>().unwrap_err();
 
     assert_eq!(SIMPLE_MESSAGE.kind, io_error.kind());
-    assert_eq!(SIMPLE_MESSAGE.message, &*format!("{io_error}"));
+    assert_eq!(SIMPLE_MESSAGE.message, format!("{io_error}"));
 }
diff --git a/library/std/src/net/ip_addr/tests.rs b/library/std/src/net/ip_addr/tests.rs
index 7c3430b2b217c..0eb59d45de727 100644
--- a/library/std/src/net/ip_addr/tests.rs
+++ b/library/std/src/net/ip_addr/tests.rs
@@ -125,8 +125,8 @@ fn ipv4_addr_to_string() {
     assert_eq!(Ipv4Addr::new(127, 127, 127, 127).to_string(), "127.127.127.127");
 
     // Test padding
-    assert_eq!(&format!("{:16}", Ipv4Addr::new(1, 1, 1, 1)), "1.1.1.1         ");
-    assert_eq!(&format!("{:>16}", Ipv4Addr::new(1, 1, 1, 1)), "         1.1.1.1");
+    assert_eq!(format!("{:16}", Ipv4Addr::new(1, 1, 1, 1)), "1.1.1.1         ");
+    assert_eq!(format!("{:>16}", Ipv4Addr::new(1, 1, 1, 1)), "         1.1.1.1");
 }
 
 #[test]
@@ -148,8 +148,8 @@ fn ipv6_addr_to_string() {
         "1111:2222:3333:4444:5555:6666:7777:8888"
     );
     // padding
-    assert_eq!(&format!("{:20}", Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8)), "1:2:3:4:5:6:7:8     ");
-    assert_eq!(&format!("{:>20}", Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8)), "     1:2:3:4:5:6:7:8");
+    assert_eq!(format!("{:20}", Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8)), "1:2:3:4:5:6:7:8     ");
+    assert_eq!(format!("{:>20}", Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8)), "     1:2:3:4:5:6:7:8");
 
     // reduce a single run of zeros
     assert_eq!(
diff --git a/library/std/src/net/socket_addr/tests.rs b/library/std/src/net/socket_addr/tests.rs
index 15211f81981ba..dfc6dabbed1ed 100644
--- a/library/std/src/net/socket_addr/tests.rs
+++ b/library/std/src/net/socket_addr/tests.rs
@@ -64,11 +64,11 @@ fn ipv4_socket_addr_to_string() {
 
     // Test padding.
     assert_eq!(
-        &format!("{:16}", SocketAddrV4::new(Ipv4Addr::new(1, 1, 1, 1), 53)),
+        format!("{:16}", SocketAddrV4::new(Ipv4Addr::new(1, 1, 1, 1), 53)),
         "1.1.1.1:53      "
     );
     assert_eq!(
-        &format!("{:>16}", SocketAddrV4::new(Ipv4Addr::new(1, 1, 1, 1), 53)),
+        format!("{:>16}", SocketAddrV4::new(Ipv4Addr::new(1, 1, 1, 1), 53)),
         "      1.1.1.1:53"
     );
 }
@@ -111,11 +111,11 @@ fn ipv6_socket_addr_to_string() {
 
     // Test padding.
     assert_eq!(
-        &format!("{:22}", SocketAddrV6::new(Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8), 9, 0, 0)),
+        format!("{:22}", SocketAddrV6::new(Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8), 9, 0, 0)),
         "[1:2:3:4:5:6:7:8]:9   "
     );
     assert_eq!(
-        &format!("{:>22}", SocketAddrV6::new(Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8), 9, 0, 0)),
+        format!("{:>22}", SocketAddrV6::new(Ipv6Addr::new(1, 2, 3, 4, 5, 6, 7, 8), 9, 0, 0)),
         "   [1:2:3:4:5:6:7:8]:9"
     );
 }