rust-lang · Kobzol · Aug 18, 2025
diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs
@@ -38,7 +38,7 @@ use crate::{
 };
 
 /// Build a standard library for the given `target` using the given `build_compiler`.
-#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct Std {
     pub target: TargetSelection,
     /// Compiler that builds the standard library.
@@ -939,7 +939,7 @@ fn cp_rustc_component_to_ci_sysroot(builder: &Builder<'_>, sysroot: &Path, conte
 ///   so that it can compile build scripts and proc macros when building this `rustc`.
 /// - Makes sure that `build_compiler` has a standard library prepared for `target`,
 ///   so that the built `rustc` can *link to it* and use it at runtime.
-#[derive(Debug, PartialOrd, Ord, Clone, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct Rustc {
     /// The target on which rustc will run (its host).
     pub target: TargetSelection,
@@ -1918,7 +1918,7 @@ impl Step for Sysroot {
 /// linker wrappers (LLD, LLVM bitcode linker, etc.).
 ///
 /// This will assemble a compiler in `build/$target/stage$stage`.
-#[derive(Debug, PartialOrd, Ord, Clone, PartialEq, Eq, Hash)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct Assemble {
     /// The compiler which we will produce in this step. Assemble itself will
     /// take care of ensuring that the necessary prerequisites to do so exist,

diff --git a/src/bootstrap/src/core/build_steps/dist.rs b/src/bootstrap/src/core/build_steps/dist.rs
@@ -54,7 +54,7 @@ fn should_build_extended_tool(builder: &Builder<'_>, tool: &str) -> bool {
     builder.config.tools.as_ref().is_none_or(|tools| tools.contains(tool))
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct Docs {
     pub host: TargetSelection,
 }
@@ -91,7 +91,7 @@ impl Step for Docs {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct JsonDocs {
     build_compiler: Compiler,
     target: TargetSelection,
@@ -354,7 +354,7 @@ fn get_cc_search_dirs(
     (bin_path, lib_path)
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct Mingw {
     pub host: TargetSelection,
 }
@@ -394,7 +394,7 @@ impl Step for Mingw {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct Rustc {
     pub compiler: Compiler,
 }
@@ -730,7 +730,7 @@ fn copy_target_libs(
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct Std {
     pub compiler: Compiler,
     pub target: TargetSelection,
@@ -785,7 +785,7 @@ impl Step for Std {
 /// `rust.download-rustc`.
 ///
 /// (Don't confuse this with [`RustDev`], without the `c`!)
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct RustcDev {
     pub compiler: Compiler,
     pub target: TargetSelection,
@@ -1023,7 +1023,7 @@ fn copy_src_dirs(
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct Src;
 
 impl Step for Src {
@@ -1084,7 +1084,7 @@ impl Step for Src {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct PlainSourceTarball;
 
 impl Step for PlainSourceTarball {
@@ -1230,7 +1230,7 @@ impl Step for PlainSourceTarball {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct Cargo {
     pub build_compiler: Compiler,
     pub target: TargetSelection,
@@ -1284,7 +1284,7 @@ impl Step for Cargo {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct RustAnalyzer {
     pub build_compiler: Compiler,
     pub target: TargetSelection,
@@ -1560,7 +1560,7 @@ impl Step for Rustfmt {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct Extended {
     stage: u32,
     host: TargetSelection,
@@ -2401,7 +2401,7 @@ impl Step for LlvmTools {
 
 /// Distributes the `llvm-bitcode-linker` tool so that it can be used by a compiler whose host
 /// is `target`.
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct LlvmBitcodeLinker {
     /// The linker will be compiled by this compiler.
     pub build_compiler: Compiler,

diff --git a/src/bootstrap/src/core/build_steps/doc.rs b/src/bootstrap/src/core/build_steps/doc.rs
@@ -580,7 +580,7 @@ impl Step for SharedAssets {
 }
 
 /// Document the standard library using `build_compiler`.
-#[derive(Debug, Clone, Hash, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct Std {
     build_compiler: Compiler,
     target: TargetSelection,
@@ -715,7 +715,7 @@ impl Step for Std {
 /// or remote link.
 const STD_PUBLIC_CRATES: [&str; 5] = ["core", "alloc", "std", "proc_macro", "test"];
 
-#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
 pub enum DocumentationFormat {
     Html,
     Json,
@@ -1230,7 +1230,7 @@ fn symlink_dir_force(config: &Config, original: &Path, link: &Path) {
 }
 
 /// Builds the Rust compiler book.
-#[derive(Ord, PartialOrd, Debug, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct RustcBook {
     build_compiler: Compiler,
     target: TargetSelection,
@@ -1334,7 +1334,7 @@ impl Step for RustcBook {
 /// Documents the reference.
 /// It has to always be done using a stage 1+ compiler, because it references in-tree
 /// compiler/stdlib concepts.
-#[derive(Ord, PartialOrd, Debug, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct Reference {
     build_compiler: Compiler,
     target: TargetSelection,

diff --git a/src/bootstrap/src/core/build_steps/run.rs b/src/bootstrap/src/core/build_steps/run.rs
@@ -17,7 +17,7 @@ use crate::core::config::flags::get_completion;
 use crate::utils::exec::command;
 use crate::{Mode, t};
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct BuildManifest;
 
 impl Step for BuildManifest {
@@ -56,7 +56,7 @@ impl Step for BuildManifest {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct BumpStage0;
 
 impl Step for BumpStage0 {
@@ -78,7 +78,7 @@ impl Step for BumpStage0 {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct ReplaceVersionPlaceholder;
 
 impl Step for ReplaceVersionPlaceholder {
@@ -169,7 +169,7 @@ impl Step for Miri {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct CollectLicenseMetadata;
 
 impl Step for CollectLicenseMetadata {
@@ -200,7 +200,7 @@ impl Step for CollectLicenseMetadata {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct GenerateCopyright;
 
 impl Step for GenerateCopyright {
@@ -264,7 +264,7 @@ impl Step for GenerateCopyright {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct GenerateWindowsSys;
 
 impl Step for GenerateWindowsSys {
@@ -326,7 +326,7 @@ impl Step for GenerateCompletions {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct UnicodeTableGenerator;
 
 impl Step for UnicodeTableGenerator {
@@ -348,7 +348,7 @@ impl Step for UnicodeTableGenerator {
     }
 }
 
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct FeaturesStatusDump;
 
 impl Step for FeaturesStatusDump {
@@ -408,7 +408,7 @@ impl Step for CyclicStep {
 ///
 /// The coverage-dump tool is an internal detail of coverage tests, so this run
 /// step is only needed when testing coverage-dump manually.
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct CoverageDump;
 
 impl Step for CoverageDump {

diff --git a/src/bootstrap/src/core/build_steps/test.rs b/src/bootstrap/src/core/build_steps/test.rs
@@ -2732,7 +2732,7 @@ fn prepare_cargo_test(
 /// FIXME(Zalathar): Try to split this into two separate steps: a user-visible
 /// step for testing standard library crates, and an internal step used for both
 /// library crates and compiler crates.
-#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct Crate {
     pub compiler: Compiler,
     pub target: TargetSelection,
@@ -3747,7 +3747,7 @@ impl Step for TestFloatParse {
 /// Runs the tool `src/tools/collect-license-metadata` in `ONLY_CHECK=1` mode,
 /// which verifies that `license-metadata.json` is up-to-date and therefore
 /// running the tool normally would not update anything.
-#[derive(Debug, PartialOrd, Ord, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 pub struct CollectLicenseMetadata;
 
 impl Step for CollectLicenseMetadata {

diff --git a/src/bootstrap/src/core/config/mod.rs b/src/bootstrap/src/core/config/mod.rs
@@ -324,7 +324,7 @@ impl FromStr for LlvmLibunwind {
     }
 }
 
-#[derive(Debug, Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[derive(Debug, Default, Copy, Clone, PartialEq, Eq, Hash)]
 pub enum SplitDebuginfo {
     Packed,
     Unpacked,

diff --git a/src/bootstrap/src/core/config/target_selection.rs b/src/bootstrap/src/core/config/target_selection.rs
@@ -14,7 +14,7 @@ pub struct TargetSelection {
 }
 
 /// Newtype over `Vec<TargetSelection>` so we can implement custom parsing logic
-#[derive(Clone, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
+#[derive(Clone, Default, PartialEq, Eq, Hash, Debug)]
 pub struct TargetSelectionList(pub Vec<TargetSelection>);
 
 pub fn target_selection_list(s: &str) -> Result<TargetSelectionList, String> {

diff --git a/src/bootstrap/src/lib.rs b/src/bootstrap/src/lib.rs
@@ -279,7 +279,7 @@ pub enum DependencyType {
 ///
 /// These entries currently correspond to the various output directories of the
 /// build system, with each mod generating output in a different directory.
-#[derive(Debug, Hash, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Debug, Hash, Clone, Copy, PartialEq, Eq)]
 pub enum Mode {
     /// Build the standard library, placing output in the "stageN-std" directory.
     Std,
@@ -357,7 +357,7 @@ pub enum RemapScheme {
     NonCompiler,
 }
 
-#[derive(Debug, Hash, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Debug, Hash, Clone, Copy, PartialEq, Eq)]
 pub enum CLang {
     C,
     Cxx,