diff --git a/cli/diff.rs b/cli/diff.rs
index f5596bef53..9aa0b5a441 100644
--- a/cli/diff.rs
+++ b/cli/diff.rs
@@ -2,6 +2,7 @@
 
 use crate::colors;
 use dissimilar::{diff as difference, Chunk};
+use std::fmt::Write as _;
 
 /// Print diff of the same file_path, before and after formatting.
 ///
@@ -113,12 +114,14 @@ impl DiffBuilder {
   fn write_line_diff(&mut self) {
     let split = self.orig.split('\n').enumerate();
     for (i, s) in split {
-      self.output.push_str(&format!(
+      write!(
+        self.output,
         "{:width$}{} ",
         self.orig_line + i,
         colors::gray(" |"),
         width = self.line_number_width
-      ));
+      )
+      .unwrap();
       self.output.push_str(&fmt_rem());
       self.output.push_str(s);
       self.output.push('\n');
@@ -126,12 +129,14 @@ impl DiffBuilder {
 
     let split = self.edit.split('\n').enumerate();
     for (i, s) in split {
-      self.output.push_str(&format!(
+      write!(
+        self.output,
         "{:width$}{} ",
         self.edit_line + i,
         colors::gray(" |"),
         width = self.line_number_width
-      ));
+      )
+      .unwrap();
       self.output.push_str(&fmt_add());
       self.output.push_str(s);
       self.output.push('\n');
diff --git a/cli/fmt_errors.rs b/cli/fmt_errors.rs
index 37a58364af..759850cecc 100644
--- a/cli/fmt_errors.rs
+++ b/cli/fmt_errors.rs
@@ -7,6 +7,7 @@ use crate::colors::yellow;
 use deno_core::error::format_file_name;
 use deno_core::error::JsError;
 use deno_core::error::JsStackFrame;
+use std::fmt::Write as _;
 
 // Keep in sync with `/core/error.js`.
 pub fn format_location(frame: &JsStackFrame) -> String {
@@ -29,9 +30,9 @@ pub fn format_location(frame: &JsStackFrame) -> String {
     result += &cyan("<anonymous>").to_string();
   }
   if let Some(line_number) = frame.line_number {
-    result += &format!("{}{}", ":", yellow(&line_number.to_string()));
+    write!(result, ":{}", yellow(&line_number.to_string())).unwrap();
     if let Some(column_number) = frame.column_number {
-      result += &format!("{}{}", ":", yellow(&column_number.to_string()));
+      write!(result, ":{}", yellow(&column_number.to_string())).unwrap();
     }
   }
   result
@@ -61,18 +62,18 @@ fn format_frame(frame: &JsStackFrame) -> String {
     if let Some(function_name) = &frame.function_name {
       if let Some(type_name) = &frame.type_name {
         if !function_name.starts_with(type_name) {
-          formatted_method += &format!("{}.", type_name);
+          write!(formatted_method, "{}.", type_name).unwrap();
         }
       }
       formatted_method += function_name;
       if let Some(method_name) = &frame.method_name {
         if !function_name.ends_with(method_name) {
-          formatted_method += &format!(" [as {}]", method_name);
+          write!(formatted_method, " [as {}]", method_name).unwrap();
         }
       }
     } else {
       if let Some(type_name) = &frame.type_name {
-        formatted_method += &format!("{}.", type_name);
+        write!(formatted_method, "{}.", type_name).unwrap();
       }
       if let Some(method_name) = &frame.method_name {
         formatted_method += method_name
@@ -84,7 +85,7 @@ fn format_frame(frame: &JsStackFrame) -> String {
   } else if frame.is_constructor {
     result += "new ";
     if let Some(function_name) = &frame.function_name {
-      result += &italic_bold(&function_name).to_string();
+      write!(result, "{}", italic_bold(&function_name)).unwrap();
     } else {
       result += &cyan("<anonymous>").to_string();
     }
@@ -94,7 +95,7 @@ fn format_frame(frame: &JsStackFrame) -> String {
     result += &format_location(frame);
     return result;
   }
-  result += &format!(" ({})", format_location(frame));
+  write!(result, " ({})", format_location(frame)).unwrap();
   result
 }
 
@@ -156,7 +157,7 @@ fn format_js_error_inner(js_error: &JsError, is_child: bool) -> String {
     for aggregated_error in aggregated {
       let error_string = format_js_error_inner(aggregated_error, true);
       for line in error_string.trim_start_matches("Uncaught ").lines() {
-        s.push_str(&format!("\n    {}", line));
+        write!(s, "\n    {}", line).unwrap();
       }
     }
   }
@@ -174,14 +175,16 @@ fn format_js_error_inner(js_error: &JsError, is_child: bool) -> String {
     0,
   ));
   for frame in &js_error.frames {
-    s.push_str(&format!("\n    at {}", format_frame(frame)));
+    write!(s, "\n    at {}", format_frame(frame)).unwrap();
   }
   if let Some(cause) = &js_error.cause {
     let error_string = format_js_error_inner(cause, true);
-    s.push_str(&format!(
+    write!(
+      s,
       "\nCaused by: {}",
       error_string.trim_start_matches("Uncaught ")
-    ));
+    )
+    .unwrap();
   }
   s
 }
diff --git a/cli/lsp/language_server.rs b/cli/lsp/language_server.rs
index 909d17bfe3..1e9da54d6d 100644
--- a/cli/lsp/language_server.rs
+++ b/cli/lsp/language_server.rs
@@ -13,6 +13,7 @@ use log::error;
 use log::warn;
 use serde_json::from_value;
 use std::env;
+use std::fmt::Write as _;
 use std::path::PathBuf;
 use std::sync::Arc;
 use tokio::fs;
@@ -2878,7 +2879,8 @@ impl Inner {
       let measures = self.performance.to_vec();
       let workspace_settings = self.config.get_workspace_settings();
 
-      contents.push_str(&format!(
+      write!(
+        contents,
         r#"# Deno Language Server Status
 
 ## Workspace Settings
@@ -2914,16 +2916,19 @@ impl Inner {
           .map(|m| m.to_string())
           .collect::<Vec<String>>()
           .join("\n    - ")
-      ));
+      )
+      .unwrap();
       contents
         .push_str("\n## Performance\n\n|Name|Duration|Count|\n|---|---|---|\n");
       let mut averages = self.performance.averages();
       averages.sort();
       for average in averages {
-        contents.push_str(&format!(
+        writeln!(
+          contents,
           "|{}|{}ms|{}|\n",
           average.name, average.average_duration, average.count
-        ));
+        )
+        .unwrap();
       }
       Some(contents)
     } else {
diff --git a/cli/lsp/path_to_regex.rs b/cli/lsp/path_to_regex.rs
index b1929c9b93..937136ce31 100644
--- a/cli/lsp/path_to_regex.rs
+++ b/cli/lsp/path_to_regex.rs
@@ -33,6 +33,7 @@ use once_cell::sync::Lazy;
 use regex::Regex;
 use std::collections::HashMap;
 use std::fmt;
+use std::fmt::Write as _;
 use std::iter::Peekable;
 
 static ESCAPE_STRING_RE: Lazy<Regex> =
@@ -268,9 +269,9 @@ impl StringOrVec {
         let mut s = String::new();
         for (i, segment) in v.iter().enumerate() {
           if omit_initial_prefix && i == 0 {
-            s.push_str(&format!("{}{}", segment, suffix));
+            write!(s, "{}{}", segment, suffix).unwrap();
           } else {
-            s.push_str(&format!("{}{}{}", prefix, segment, suffix));
+            write!(s, "{}{}{}", prefix, segment, suffix).unwrap();
           }
         }
         s
@@ -618,10 +619,10 @@ pub fn tokens_to_regex(
 
   if end {
     if !strict {
-      route.push_str(&format!(r"{}?", delimiter));
+      write!(route, r"{}?", delimiter).unwrap();
     }
     if has_ends_with {
-      route.push_str(&format!(r"(?={})", ends_with));
+      write!(route, r"(?={})", ends_with).unwrap();
     } else {
       route.push('$');
     }
@@ -639,11 +640,11 @@ pub fn tokens_to_regex(
     };
 
     if !strict {
-      route.push_str(&format!(r"(?:{}(?={}))?", delimiter, ends_with));
+      write!(route, r"(?:{}(?={}))?", delimiter, ends_with).unwrap();
     }
 
     if !is_end_deliminated {
-      route.push_str(&format!(r"(?={}|{})", delimiter, ends_with));
+      write!(route, r"(?={}|{})", delimiter, ends_with).unwrap();
     }
   }
 
@@ -753,7 +754,7 @@ impl Compiler {
                       }
                     }
                   }
-                  path.push_str(&format!("{}{}{}", prefix, segment, suffix));
+                  write!(path, "{}{}{}", prefix, segment, suffix).unwrap();
                 }
               }
             }
@@ -772,7 +773,7 @@ impl Compiler {
               }
               let prefix = k.prefix.clone().unwrap_or_default();
               let suffix = k.suffix.clone().unwrap_or_default();
-              path.push_str(&format!("{}{}{}", prefix, s, suffix));
+              write!(path, "{}{}{}", prefix, s, suffix).unwrap();
             }
             None => {
               if !optional {
diff --git a/cli/tests/integration/vendor_tests.rs b/cli/tests/integration/vendor_tests.rs
index 9b8211cd16..54809dacf6 100644
--- a/cli/tests/integration/vendor_tests.rs
+++ b/cli/tests/integration/vendor_tests.rs
@@ -3,6 +3,7 @@
 use deno_core::serde_json;
 use deno_core::serde_json::json;
 use pretty_assertions::assert_eq;
+use std::fmt::Write as _;
 use std::path::PathBuf;
 use std::process::Stdio;
 use test_util as util;
@@ -530,20 +531,19 @@ fn update_existing_config_test() {
 fn success_text(module_count: &str, dir: &str, has_import_map: bool) -> String {
   let mut text = format!("Vendored {} into {} directory.", module_count, dir);
   if has_import_map {
-    text.push_str(&
-      format!(
-        concat!(
-          "\n\nTo use vendored modules, specify the `--import-map {}import_map.json` flag when ",
-          r#"invoking Deno subcommands or add an `"importMap": "<path_to_vendored_import_map>"` "#,
-          "entry to a deno.json file.",
-        ),
-        if dir != "vendor/" {
-          format!("{}{}", dir.trim_end_matches('/'), if cfg!(windows) { '\\' } else {'/'})
-        } else {
-          dir.to_string()
-        }
-      )
+    let f = format!(
+      concat!(
+        "\n\nTo use vendored modules, specify the `--import-map {}import_map.json` flag when ",
+        r#"invoking Deno subcommands or add an `"importMap": "<path_to_vendored_import_map>"` "#,
+        "entry to a deno.json file.",
+      ),
+      if dir != "vendor/" {
+        format!("{}{}", dir.trim_end_matches('/'), if cfg!(windows) { '\\' } else {'/'})
+      } else {
+        dir.to_string()
+      }
     );
+    write!(text, "{}", f).unwrap();
   }
   text
 }
diff --git a/cli/tools/test.rs b/cli/tools/test.rs
index ab6ded1b0a..4bebe6feea 100644
--- a/cli/tools/test.rs
+++ b/cli/tools/test.rs
@@ -53,6 +53,7 @@ use serde::Deserialize;
 use std::collections::BTreeMap;
 use std::collections::HashMap;
 use std::collections::HashSet;
+use std::fmt::Write as _;
 use std::io::Read;
 use std::io::Write;
 use std::num::NonZeroUsize;
@@ -618,27 +619,33 @@ impl TestReporter for PrettyTestReporter {
 
     let mut summary_result = String::new();
 
-    summary_result.push_str(&format!(
+    write!(
+      summary_result,
       "{} passed{} | {} failed{}",
       summary.passed,
       get_steps_text(summary.passed_steps),
       summary.failed,
       get_steps_text(summary.failed_steps + summary.pending_steps),
-    ));
+    )
+    .unwrap();
 
     let ignored_steps = get_steps_text(summary.ignored_steps);
     if summary.ignored > 0 || !ignored_steps.is_empty() {
-      summary_result
-        .push_str(&format!(" | {} ignored{}", summary.ignored, ignored_steps))
-    };
+      write!(
+        summary_result,
+        " | {} ignored{}",
+        summary.ignored, ignored_steps
+      )
+      .unwrap()
+    }
 
     if summary.measured > 0 {
-      summary_result.push_str(&format!(" | {} measured", summary.measured,))
-    };
+      write!(summary_result, " | {} measured", summary.measured,).unwrap();
+    }
 
     if summary.filtered_out > 0 {
-      summary_result
-        .push_str(&format!(" | {} filtered out", summary.filtered_out,))
+      write!(summary_result, " | {} filtered out", summary.filtered_out)
+        .unwrap()
     };
 
     println!(
@@ -891,7 +898,7 @@ fn extract_files_from_regex_blocks(
       let mut file_source = String::new();
       for line in lines_regex.captures_iter(text) {
         let text = line.get(1).unwrap();
-        file_source.push_str(&format!("{}\n", text.as_str()));
+        writeln!(file_source, "{}", text.as_str()).unwrap();
       }
 
       let file_specifier = deno_core::resolve_url_or_path(&format!(
diff --git a/cli/tools/vendor/analyze.rs b/cli/tools/vendor/analyze.rs
index 6a1f53aae0..0aa7010c73 100644
--- a/cli/tools/vendor/analyze.rs
+++ b/cli/tools/vendor/analyze.rs
@@ -25,7 +25,7 @@ struct DefaultExportFinder {
   has_default_export: bool,
 }
 
-impl<'a> Visit for DefaultExportFinder {
+impl Visit for DefaultExportFinder {
   noop_visit_type!();
 
   fn visit_export_default_decl(&mut self, _: &ExportDefaultDecl) {
diff --git a/cli/tools/vendor/build.rs b/cli/tools/vendor/build.rs
index ecb7db717c..341ef86841 100644
--- a/cli/tools/vendor/build.rs
+++ b/cli/tools/vendor/build.rs
@@ -1,5 +1,6 @@
 // Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
 
+use std::fmt::Write as _;
 use std::path::Path;
 use std::path::PathBuf;
 
@@ -164,10 +165,14 @@ fn build_proxy_module_source(
   module: &Module,
   proxied_module: &ProxiedModule,
 ) -> String {
-  let mut text = format!(
-    "// @deno-types=\"{}\"\n",
+  let mut text = String::new();
+  writeln!(
+    text,
+    "// @deno-types=\"{}\"",
     proxied_module.declaration_specifier
-  );
+  )
+  .unwrap();
+
   let relative_specifier = format!(
     "./{}",
     proxied_module
@@ -179,15 +184,17 @@ fn build_proxy_module_source(
 
   // for simplicity, always include the `export *` statement as it won't error
   // even when the module does not contain a named export
-  text.push_str(&format!("export * from \"{}\";\n", relative_specifier));
+  writeln!(text, "export * from \"{}\";", relative_specifier).unwrap();
 
   // add a default export if one exists in the module
   if let Some(parsed_source) = module.maybe_parsed_source.as_ref() {
     if has_default_export(parsed_source) {
-      text.push_str(&format!(
-        "export {{ default }} from \"{}\";\n",
+      writeln!(
+        text,
+        "export {{ default }} from \"{}\";",
         relative_specifier
-      ));
+      )
+      .unwrap();
     }
   }
 
diff --git a/core/runtime.rs b/core/runtime.rs
index 98c95b39ff..4a2f59f488 100644
--- a/core/runtime.rs
+++ b/core/runtime.rs
@@ -1012,7 +1012,8 @@ Pending dynamic modules:\n".to_string();
           let module_info = module_map
             .get_info_by_id(&pending_evaluate.module_id)
             .unwrap();
-          msg.push_str(&format!("- {}", module_info.name.as_str()));
+          msg.push_str("- ");
+          msg.push_str(module_info.name.as_str());
         }
         return Poll::Ready(Err(generic_error(msg)));
       } else {
diff --git a/ext/ffi/lib.rs b/ext/ffi/lib.rs
index ca02aca5bb..17ebf772b8 100644
--- a/ext/ffi/lib.rs
+++ b/ext/ffi/lib.rs
@@ -573,9 +573,8 @@ where
         // By default, Err returned by this function does not tell
         // which symbol wasn't exported. So we'll modify the error
         // message to include the name of symbol.
-        //
-        // SAFETY: The obtained T symbol is the size of a pointer.
         let fn_ptr =
+          // SAFETY: The obtained T symbol is the size of a pointer.
           match unsafe { resource.lib.symbol::<*const c_void>(symbol) } {
             Ok(value) => Ok(value),
             Err(err) => Err(generic_error(format!(
diff --git a/ext/net/ops.rs b/ext/net/ops.rs
index 3522a919ce..87bfc32722 100644
--- a/ext/net/ops.rs
+++ b/ext/net/ops.rs
@@ -754,13 +754,14 @@ fn rdata_to_return_record(
             let mut s = String::new();
 
             if let Some(name) = name {
-              s.push_str(&format!("{}", name));
+              s.push_str(&name.to_string());
             } else if name.is_none() && key_values.is_empty() {
               s.push(';');
             }
 
             for key_value in key_values {
-              s.push_str(&format!("; {}", key_value));
+              s.push_str("; ");
+              s.push_str(&key_value.to_string());
             }
 
             s
diff --git a/ext/webgpu/src/bundle.rs b/ext/webgpu/src/bundle.rs
index 0c1f822025..1f5e4da7b8 100644
--- a/ext/webgpu/src/bundle.rs
+++ b/ext/webgpu/src/bundle.rs
@@ -152,9 +152,9 @@ pub fn op_webgpu_render_bundle_encoder_set_bind_group(
 
   // Align the data
   assert!(args.dynamic_offsets_data.len() % std::mem::size_of::<u32>() == 0);
-  // SAFETY: A u8 to u32 cast is safe because we asserted that the length is a
-  // multiple of 4.
   let (prefix, dynamic_offsets_data, suffix) =
+    // SAFETY: A u8 to u32 cast is safe because we asserted that the length is a
+    // multiple of 4.
     unsafe { args.dynamic_offsets_data.align_to::<u32>() };
   assert!(prefix.is_empty());
   assert!(suffix.is_empty());
diff --git a/ext/webgpu/src/compute_pass.rs b/ext/webgpu/src/compute_pass.rs
index 9f6394f7ba..5e27583f4b 100644
--- a/ext/webgpu/src/compute_pass.rs
+++ b/ext/webgpu/src/compute_pass.rs
@@ -241,9 +241,9 @@ pub fn op_webgpu_compute_pass_set_bind_group(
 
   // Align the data
   assert!(args.dynamic_offsets_data_start % std::mem::size_of::<u32>() == 0);
-  // SAFETY: A u8 to u32 cast is safe because we asserted that the length is a
-  // multiple of 4.
   let (prefix, dynamic_offsets_data, suffix) =
+    // SAFETY: A u8 to u32 cast is safe because we asserted that the length is a
+    // multiple of 4.
     unsafe { args.dynamic_offsets_data.align_to::<u32>() };
   assert!(prefix.is_empty());
   assert!(suffix.is_empty());
diff --git a/ext/webgpu/src/render_pass.rs b/ext/webgpu/src/render_pass.rs
index 16398359fc..5d2cd6e5a1 100644
--- a/ext/webgpu/src/render_pass.rs
+++ b/ext/webgpu/src/render_pass.rs
@@ -305,9 +305,9 @@ pub fn op_webgpu_render_pass_set_bind_group(
 
   // Align the data
   assert!(args.dynamic_offsets_data_start % std::mem::size_of::<u32>() == 0);
-  // SAFETY: A u8 to u32 cast is safe because we asserted that the length is a
-  // multiple of 4.
   let (prefix, dynamic_offsets_data, suffix) =
+    // SAFETY: A u8 to u32 cast is safe because we asserted that the length is a
+    // multiple of 4.
     unsafe { args.dynamic_offsets_data.align_to::<u32>() };
   assert!(prefix.is_empty());
   assert!(suffix.is_empty());
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index e2609326f7..7255222461 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.61.0"
+channel = "1.62.0"
 components = ["rustfmt", "clippy"]
diff --git a/serde_v8/de.rs b/serde_v8/de.rs
index 7b825f990c..08b28c0f5c 100644
--- a/serde_v8/de.rs
+++ b/serde_v8/de.rs
@@ -580,7 +580,7 @@ struct EnumAccess<'a, 'b, 's> {
   // p1: std::marker::PhantomData<&'x ()>,
 }
 
-impl<'de, 'a, 'b, 's, 'x> de::EnumAccess<'de> for EnumAccess<'a, 'b, 's> {
+impl<'de, 'a, 'b, 's> de::EnumAccess<'de> for EnumAccess<'a, 'b, 's> {
   type Error = Error;
   type Variant = VariantDeserializer<'a, 'b, 's>;
 
diff --git a/serde_v8/magic/bytestring.rs b/serde_v8/magic/bytestring.rs
index 3efb56f6aa..c7c1b9de83 100644
--- a/serde_v8/magic/bytestring.rs
+++ b/serde_v8/magic/bytestring.rs
@@ -51,9 +51,9 @@ impl FromV8 for ByteString {
     }
     let len = v8str.length();
     let mut buffer = SmallVec::with_capacity(len);
+    #[allow(clippy::uninit_vec)]
     // SAFETY: we set length == capacity (see previous line),
     // before immediately writing into that buffer and sanity check with an assert
-    #[allow(clippy::uninit_vec)]
     unsafe {
       buffer.set_len(len);
       let written = v8str.write_one_byte(
diff --git a/serde_v8/magic/rawbytes.rs b/serde_v8/magic/rawbytes.rs
index 2189ebfc33..4e41d313a5 100644
--- a/serde_v8/magic/rawbytes.rs
+++ b/serde_v8/magic/rawbytes.rs
@@ -87,11 +87,11 @@ mod tests {
 
   #[test]
   fn bytes_layout() {
-    // SAFETY: ensuring layout is the same
     let u1: [usize; 4] =
+      // SAFETY: ensuring layout is the same
       unsafe { mem::transmute(from_static(HELLO.as_bytes())) };
-    // SAFETY: ensuring layout is the same
     let u2: [usize; 4] =
+      // SAFETY: ensuring layout is the same
       unsafe { mem::transmute(bytes::Bytes::from_static(HELLO.as_bytes())) };
     assert_eq!(u1[..3], u2[..3]); // Struct bytes are equal besides Vtables
   }
diff --git a/serde_v8/magic/u16string.rs b/serde_v8/magic/u16string.rs
index e304ea1879..1e36879a4c 100644
--- a/serde_v8/magic/u16string.rs
+++ b/serde_v8/magic/u16string.rs
@@ -34,9 +34,9 @@ impl FromV8 for U16String {
       .map_err(|_| Error::ExpectedString)?;
     let len = v8str.length();
     let mut buffer = Vec::with_capacity(len);
+    #[allow(clippy::uninit_vec)]
     // SAFETY: we set length == capacity (see previous line),
     // before immediately writing into that buffer and sanity check with an assert
-    #[allow(clippy::uninit_vec)]
     unsafe {
       buffer.set_len(len);
       let written = v8str.write(
diff --git a/serde_v8/magic/v8slice.rs b/serde_v8/magic/v8slice.rs
index 452c857a33..67255fc537 100644
--- a/serde_v8/magic/v8slice.rs
+++ b/serde_v8/magic/v8slice.rs
@@ -50,6 +50,7 @@ impl V8Slice {
   }
 
   fn as_slice_mut(&mut self) -> &mut [u8] {
+    #[allow(clippy::cast_ref_to_mut)]
     // SAFETY: v8::SharedRef<v8::BackingStore> is similar to Arc<[u8]>,
     // it points to a fixed continuous slice of bytes on the heap.
     // It's safe-ish to mutate concurrently because it can not be
@@ -59,7 +60,6 @@ impl V8Slice {
     // concurrent mutation is simply an accepted fact of life.
     // And in practice V8Slices also do not have overallping read/write phases.
     // TLDR: permissive interior mutability on slices of bytes is "fine"
-    #[allow(clippy::cast_ref_to_mut)]
     unsafe {
       &mut *(&self.store[self.range.clone()] as *const _ as *mut [u8])
     }