Update to Rust 1.74 and use new clippy lints table (#8722)

Update to [Rust
1.74](https://blog.rust-lang.org/2023/11/16/Rust-1.74.0.html) and use
the new clippy lints table.

The update itself introduced a new clippy lint about superfluous hashes
in raw strings, which got removed.

I moved our lint config from `rustflags` to the newly stabilized
[workspace.lints](https://doc.rust-lang.org/stable/cargo/reference/workspaces.html#the-lints-table).
One consequence is that we have to `unsafe_code = "warn"` instead of
"forbid" because the latter now actually bans unsafe code:

```
error[E0453]: allow(unsafe_code) incompatible with previous forbid
  --> crates/ruff_source_file/src/newlines.rs:62:17
   |
62 |         #[allow(unsafe_code)]
   |                 ^^^^^^^^^^^ overruled by previous forbid
   |
   = note: `forbid` lint level was set on command line
```

---------

Co-authored-by: Charlie Marsh <[email protected]>

.cargo/config.toml

@@ -1,37 +1,3 @@
 [alias]
 dev = "run --package ruff_dev --bin ruff_dev"
 benchmark = "bench -p ruff_benchmark --bench linter --bench formatter --"
-
-[target.'cfg(all())']
-rustflags = [
-  # CLIPPY LINT SETTINGS
-  # This is a workaround to configure lints for the entire workspace, pending the ability to configure this via TOML.
-  # See: `https://github.com/rust-lang/cargo/issues/5034`
-  #      `https://github.com/EmbarkStudios/rust-ecosystem/issues/22#issuecomment-947011395`
-  "-Dunsafe_code",
-  "-Wclippy::pedantic",
-  # Allowed pedantic lints
-  "-Wclippy::char_lit_as_u8",
-  "-Aclippy::collapsible_else_if",
-  "-Aclippy::collapsible_if",
-  "-Aclippy::implicit_hasher",
-  "-Aclippy::match_same_arms",
-  "-Aclippy::missing_errors_doc",
-  "-Aclippy::missing_panics_doc",
-  "-Aclippy::module_name_repetitions",
-  "-Aclippy::must_use_candidate",
-  "-Aclippy::similar_names",
-  "-Aclippy::too_many_lines",
-  # Disallowed restriction lints
-  "-Wclippy::print_stdout",
-  "-Wclippy::print_stderr",
-  "-Wclippy::dbg_macro",
-  "-Wclippy::empty_drop",
-  "-Wclippy::empty_structs_with_brackets",
-  "-Wclippy::exit",
-  "-Wclippy::get_unwrap",
-  "-Wclippy::rc_buffer",
-  "-Wclippy::rc_mutex",
-  "-Wclippy::rest_pat_in_fully_bound_structs",
-  "-Wunreachable_pub"
-]

Cargo.toml

@@ -55,6 +55,38 @@ unicode-width = { version = "0.1.11" }
 uuid = { version = "1.5.0", features = ["v4", "fast-rng", "macro-diagnostics", "js"] }
 wsl = { version = "0.1.0" }
 
+[workspace.lints.rust]
+unsafe_code = "warn"
+unreachable_pub = "warn"
+
+[workspace.lints.clippy]
+pedantic = { level = "warn", priority = -2 }
+# Allowed pedantic lints
+char_lit_as_u8 = "allow"
+collapsible_else_if = "allow"
+collapsible_if = "allow"
+implicit_hasher = "allow"
+match_same_arms = "allow"
+missing_errors_doc = "allow"
+missing_panics_doc = "allow"
+module_name_repetitions = "allow"
+must_use_candidate = "allow"
+similar_names = "allow"
+too_many_lines = "allow"
+# To allow `#[allow(clippy::all)]` in `crates/ruff_python_parser/src/python.rs`.
+needless_raw_string_hashes = "allow"
+# Disallowed restriction lints
+print_stdout = "warn"
+print_stderr = "warn"
+dbg_macro = "warn"
+empty_drop = "warn"
+empty_structs_with_brackets = "warn"
+exit = "warn"
+get_unwrap = "warn"
+rc_buffer = "warn"
+rc_mutex = "warn"
+rest_pat_in_fully_bound_structs = "warn"
+
 [profile.release]
 lto = "fat"
 codegen-units = 1

crates/flake8_to_ruff/Cargo.toml

@@ -34,3 +34,6 @@ toml = { workspace = true }
 
 [dev-dependencies]
 pretty_assertions = "1.3.0"
+
+[lints]
+workspace = true

crates/ruff_benchmark/Cargo.toml

@@ -46,6 +46,9 @@ ruff_python_formatter = { path = "../ruff_python_formatter" }
 ruff_python_index = { path = "../ruff_python_index" }
 ruff_python_parser = { path = "../ruff_python_parser" }
 
+[lints]
+workspace = true
+
 [features]
 codspeed = ["codspeed-criterion-compat"]
 

crates/ruff_cache/Cargo.toml

@@ -20,3 +20,6 @@ seahash = "4.1.0"
 
 [dev-dependencies]
 ruff_macros = { path = "../ruff_macros" }
+
+[lints]
+workspace = true

crates/ruff_cli/Cargo.toml

@@ -76,3 +76,6 @@ mimalloc = "0.1.39"
 
 [target.'cfg(all(not(target_os = "windows"), not(target_os = "openbsd"), any(target_arch = "x86_64", target_arch = "aarch64", target_arch = "powerpc64")))'.dependencies]
 tikv-jemallocator = "0.5.0"
+
+[lints]
+workspace = true

crates/ruff_cli/src/commands/check.rs

@@ -202,12 +202,12 @@ fn lint_path(
     match result {
         Ok(inner) => inner,
         Err(error) => {
-            let message = r#"This indicates a bug in Ruff. If you could open an issue at:
+            let message = r"This indicates a bug in Ruff. If you could open an issue at:
 
     https://github.com/astral-sh/ruff/issues/new?title=%5BLinter%20panic%5D
 
 ...with the relevant file contents, the `pyproject.toml` settings, and the following stack trace, we'd be very appreciative!
-"#;
+";
 
             error!(
                 "{}{}{} {message}\n{error}",

crates/ruff_cli/src/commands/format.rs

@@ -660,12 +660,12 @@ impl Display for FormatCommandError {
                 }
             }
             Self::Panic(path, err) => {
-                let message = r#"This indicates a bug in Ruff. If you could open an issue at:
+                let message = r"This indicates a bug in Ruff. If you could open an issue at:
 
     https://github.com/astral-sh/ruff/issues/new?title=%5BFormatter%20panic%5D
 
 ...with the relevant file contents, the `pyproject.toml` settings, and the following stack trace, we'd be very appreciative!
-"#;
+";
                 if let Some(path) = path {
                     write!(
                         f,

crates/ruff_cli/src/commands/rule.rs

@@ -63,7 +63,7 @@ fn format_rule_text(rule: Rule) -> String {
 
     if rule.is_preview() || rule.is_nursery() {
         output.push_str(
-            r#"This rule is in preview and is not stable. The `--preview` flag is required for use."#,
+            r"This rule is in preview and is not stable. The `--preview` flag is required for use.",
         );
         output.push('\n');
         output.push('\n');

crates/ruff_cli/tests/format.rs

@@ -395,9 +395,9 @@ fn deprecated_options() -> Result<()> {
     let ruff_toml = tempdir.path().join("ruff.toml");
     fs::write(
         &ruff_toml,
-        r#"
+        r"
 tab-size = 2
-"#,
+",
     )?;
 
     insta::with_settings!({filters => vec![
@@ -407,10 +407,10 @@ tab-size = 2
             .args(["format", "--config"])
             .arg(&ruff_toml)
             .arg("-")
-            .pass_stdin(r#"
+            .pass_stdin(r"
 if True:
     pass
-    "#), @r###"
+    "), @r###"
         success: true
         exit_code: 0
         ----- stdout -----
@@ -443,9 +443,9 @@ format = "json"
             .args(["check", "--select", "F401", "--no-cache", "--config"])
             .arg(&ruff_toml)
             .arg("-")
-            .pass_stdin(r#"
+            .pass_stdin(r"
     import os
-    "#), @r###"
+    "), @r###"
         success: false
         exit_code: 2
         ----- stdout -----

crates/ruff_dev/Cargo.toml

@@ -48,9 +48,12 @@ tracing-indicatif = { workspace = true }
 tracing-subscriber = { workspace = true, features = ["env-filter"] }
 imara-diff = "0.1.5"
 
+[dev-dependencies]
+indoc = "2.0.4"
+
 [features]
 # Turn off rayon for profiling
 singlethreaded = []
 
-[dev-dependencies]
-indoc = "2.0.4"
+[lints]
+workspace = true

crates/ruff_dev/src/generate_docs.rs

@@ -49,7 +49,7 @@ pub(crate) fn main(args: &Args) -> Result<()> {
 
             if rule.is_preview() || rule.is_nursery() {
                 output.push_str(
-                    r#"This rule is unstable and in [preview](../preview.md). The `--preview` flag is required for use."#,
+                    r"This rule is unstable and in [preview](../preview.md). The `--preview` flag is required for use.",
                 );
                 output.push('\n');
                 output.push('\n');

crates/ruff_formatter/Cargo.toml

@@ -29,3 +29,6 @@ insta = { workspace = true }
 [features]
 serde = ["dep:serde", "ruff_text_size/serde"]
 schemars = ["dep:schemars", "ruff_text_size/schemars"]
+
+[lints]
+workspace = true

crates/ruff_formatter/src/printer/mod.rs

@@ -1711,14 +1711,14 @@ mod tests {
         ));
 
         assert_eq!(
-            r#"a
+            "a
   b
     c
       d
       d
     c
   b
-a"#,
+a",
             formatted.as_code()
         );
     }
@@ -2047,10 +2047,10 @@ two lines`,
 
         assert_eq!(
             printed.as_code(),
-            r#"Group with id-2
+            "Group with id-2
 Group with id-1 does not fit on the line because it exceeds the line width of 80 characters by
 Group 2 fits
-Group 1 breaks"#
+Group 1 breaks"
         );
     }
 

crates/ruff_index/Cargo.toml

@@ -17,3 +17,6 @@ ruff_macros = { path = "../ruff_macros" }
 
 [dev-dependencies]
 static_assertions = "1.1.0"
+
+[lints]
+workspace = true

crates/ruff_linter/Cargo.toml

@@ -86,3 +86,6 @@ default = []
 schemars = ["dep:schemars"]
 # Enables the UnreachableCode rule
 unreachable-code = []
+
+[lints]
+workspace = true

crates/ruff_linter/src/fix/mod.rs

@@ -171,7 +171,7 @@ mod tests {
 
     #[test]
     fn empty_file() {
-        let locator = Locator::new(r#""#);
+        let locator = Locator::new(r"");
         let diagnostics = create_diagnostics([]);
         let FixResult {
             code,
@@ -225,10 +225,10 @@ print("hello world")
     #[test]
     fn apply_one_replacement() {
         let locator = Locator::new(
-            r#"
+            r"
 class A(object):
     ...
-"#
+"
             .trim(),
         );
         let diagnostics = create_diagnostics([Edit::replacement(
@@ -243,10 +243,10 @@ class A(object):
         } = apply_fixes(diagnostics.iter(), &locator);
         assert_eq!(
             code,
-            r#"
+            r"
 class A(Bar):
     ...
-"#
+"
             .trim(),
         );
         assert_eq!(fixes.values().sum::<usize>(), 1);
@@ -262,10 +262,10 @@ class A(Bar):
     #[test]
     fn apply_one_removal() {
         let locator = Locator::new(
-            r#"
+            r"
 class A(object):
     ...
-"#
+"
             .trim(),
         );
         let diagnostics = create_diagnostics([Edit::deletion(TextSize::new(7), TextSize::new(15))]);
@@ -276,10 +276,10 @@ class A(object):
         } = apply_fixes(diagnostics.iter(), &locator);
         assert_eq!(
             code,
-            r#"
+            r"
 class A:
     ...
-"#
+"
             .trim()
         );
         assert_eq!(fixes.values().sum::<usize>(), 1);
@@ -295,10 +295,10 @@ class A:
     #[test]
     fn apply_two_removals() {
         let locator = Locator::new(
-            r#"
+            r"
 class A(object, object, object):
     ...
-"#
+"
             .trim(),
         );
         let diagnostics = create_diagnostics([
@@ -313,10 +313,10 @@ class A(object, object, object):
 
         assert_eq!(
             code,
-            r#"
+            r"
 class A(object):
     ...
-"#
+"
             .trim()
         );
         assert_eq!(fixes.values().sum::<usize>(), 2);
@@ -334,10 +334,10 @@ class A(object):
     #[test]
     fn ignore_overlapping_fixes() {
         let locator = Locator::new(
-            r#"
+            r"
 class A(object):
     ...
-"#
+"
             .trim(),
         );
         let diagnostics = create_diagnostics([
@@ -351,10 +351,10 @@ class A(object):
         } = apply_fixes(diagnostics.iter(), &locator);
         assert_eq!(
             code,
-            r#"
+            r"
 class A:
     ...
-"#
+"
             .trim(),
         );
         assert_eq!(fixes.values().sum::<usize>(), 1);