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Rust is a systems programming language developed by Mozilla and designed to provide memory safety without a garbage collector, concurrent programming, and high performance. Since its stable release in 2015, Rust has gained widespread popularity for its strong focus on safety, concurrency, and performance. Below is a detailed version history of Rust, highlighting key features and changes introduced in each major version, from the stable release onward.

1. Rust 1.73 (2023)

Rust 1.73 introduced various improvements to the standard library and performance optimizations, with a particular focus on better developer experience.

Key features:

• Performance improvements in the `HashMap` and `BTreeMap` collections, reducing overhead and memory usage.
• Stabilized APIs for easier manipulation of strings and slices, providing more ergonomic and efficient ways to work with text and data in Rust.
• Enhanced compile-time checks and diagnostics, making it easier for developers to track down errors and issues.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1730

1. Rust 1.72 (2023)

Rust 1.72 focused on memory safety improvements, as well as optimizing build times and runtime performance.

Key features:

• Stabilization of new traits and methods in the standard library.
• Improvements in the `const` functions, allowing more complex computations to be evaluated at compile time, which reduces runtime overhead.
• Enhancements in error reporting, making error messages more user-friendly, especially for new Rust developers.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1720

1. Rust 1.71 (2023)

Rust 1.71 introduced the first steps towards stabilizing generics and async features.

Key features:

• Stabilized APIs for handling asynchronous operations with the standard `async` and `await` syntax, improving support for async programming.
• Stabilized traits for collection types, making it easier to write generic code.
• Performance improvements in common collection types, such as `Vec` and `HashMap`.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1710

1. Rust 1.70 (2023)

Rust 1.70 continued focusing on improving async programming and bringing more ergonomic features to developers.

Key features:

• Stabilized `async_fn_in_trait` and `impl_trait_in_fn` for async functions and traits, making async programming more powerful and less error-prone.
• Stabilized more `const` functions to allow more compile-time evaluations.
• Optimizations in the borrow checker and lifetime inference, improving compile times.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1700

1. Rust 1.69 (2023)

Rust 1.69 focused on further improvements to compile-time optimizations and developer experience.

Key features:

• Stabilization of the `impl_trait_in_fn` syntax, making it easier to work with generic types and traits.
• Stabilization of more `const` features, allowing for more efficient compile-time computation.
• Improvements to cargo, Rust’s build system and package manager, for better dependency resolution.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1690

1. Rust 1.68 (2023)

Rust 1.68 brought notable improvements to error handling and compile-time diagnostics.

Key features:

• Stabilized more `Result` and `Option` combinators, making error handling in Rust more ergonomic.
• Further optimizations to compilation times for large projects.
• Improved documentation generation with `rustdoc`, providing more detailed explanations and better layout for API docs.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1680

1. Rust 1.67 (2022)

Rust 1.67 focused on refining language features and improving async programming support.

Key features:

• Stabilized more async-related features, such as `async-std` and `tokio` support.
• Improved error diagnostics and warnings, making Rust’s borrow checker more user-friendly.
• Added new standard library features for error handling and traits, increasing code flexibility.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1670

1. Rust 1.66 (2022)

Rust 1.66 brought key updates to the `const` system, making compile-time evaluation more powerful and useful in production code.

Key features:

• Stabilized more `const` functions and traits, allowing for greater compile-time optimizations and reducing runtime costs.
• Improved support for WebAssembly (Wasm), making Rust a more attractive option for browser-based and embedded applications.
• Continued performance improvements in core data structures and error reporting.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1660

1. Rust 1.65 (2022)

Rust 1.65 introduced important language enhancements, focusing on increasing code ergonomics and reducing boilerplate.

Key features:

• `let-else` statements, which provide a more concise way of handling pattern-matching failures.
• Expanded support for `const` generics, further increasing the flexibility of Rust’s type system.
• Optimized compile times and runtime performance for commonly used collections and data structures.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1650

1. Rust 1.64 (2022)

Rust 1.64 introduced various incremental improvements to performance and ergonomics, with a focus on stabilizing async programming features.

Key features:

• Improved support for async/await patterns in both the compiler and the runtime, reducing complexity for developers working on concurrent systems.
• Enhanced diagnostics and error messages to improve the developer experience, especially for new Rust users.
• Performance enhancements for core library functions and data structures.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1640

1. Rust 1.63 (2022)

Rust 1.63 brought several optimizations to the Rust compiler and improvements to standard library APIs.

Key features:

• Enhanced trait system and compiler diagnostics for better error reporting.
• Stabilization of more async and WebAssembly (Wasm) features, making Rust a more viable language for web and embedded programming.
• Continued improvements to cargo, Rust’s build and package management tool, for faster builds.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1630

1. Rust 1.62 (2022)

Rust 1.62 introduced improvements in memory management, as well as expanded support for async programming.

Key features:

• Optimizations in the memory allocation system, improving performance for large applications.
• Stabilized new APIs in the standard library, particularly around async I/O and error handling.
• Continued enhancements to error reporting and diagnostics.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1620

1. Rust 1.61 (2022)

Rust 1.61 focused on stability improvements and language refinement.

Key features:

• More stable features for working with traits and lifetimes, making it easier to write generic and safe code.
• Performance improvements in the borrow checker and memory allocation, improving compilation times.
• Enhanced error diagnostics and improved developer experience through more actionable compiler messages.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1610

1. Rust 1.60 (2022)

Rust 1.60 introduced language refinements and optimizations focused on code clarity and efficiency.

Key features:

• Expanded `const` support for compile-time evaluations, making Rust even more powerful for systems programming.
• New APIs for handling errors and I/O operations in a more ergonomic way.
• Improved performance for core library components, such as collections and I/O.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1600

1. Rust 1.59 (2022)

Rust 1.59 focused on incremental updates and new language features for better performance and maintainability.

Key features:

• Stabilized more features related to async/await, particularly for concurrency-heavy applications.
• Expanded support for const generics and traits, allowing for more flexible and efficient abstractions in the type system.
• Continued performance optimizations in the runtime and compiler.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1590

1. Rust 1.58 (2022)

Rust 1.58 introduced enhancements in error reporting, diagnostics, and performance optimizations.

Key features:

• Stabilized more APIs for string and data manipulation.
• Performance improvements in the memory model and data structures, resulting in faster runtime execution.
• Improved diagnostics and error messages for complex code patterns, reducing the learning curve for new developers.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1580

1. Rust 1.57 (2021)

Rust 1.57 focused on improving concurrency and memory management in the Rust runtime.

Key features:

• Improved handling of concurrency with better support for multi-threaded applications.
• Expanded APIs for working with strings and byte buffers.
• Enhanced performance in key areas of memory management and runtime efficiency.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1570

1. Rust 1.56 (2021)

Rust 1.56 was a notable release that introduced the 2021 edition of the Rust language.

Key features:

• **Rust 2021 Edition**: This edition brought numerous improvements to the language, focusing on ergonomics, tooling, and stability.
• Stabilization of more language features, including `async/await` improvements and better trait handling.
• Enhancements in performance and error diagnostics, improving the developer experience.

Official documentation:

https://doc.rust-lang.org/stable/releases.html#version-1560

1. Rust 1.55 (2021)

Rust 1.55 continued improving the language with better memory handling and error diagnostics.

Key features:

• Enhanced diagnostics for error reporting, making it easier to identify and fix issues during development.
• Improved support for the `async` ecosystem, especially with regard to handling concurrency.
• Optimizations in the standard library and memory allocation system.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1550

1. Rust 1.54 (2021)

Rust 1.54 focused on performance improvements and async programming enhancements.

Key features:

• Stabilized more APIs for working with `async` and `await`.
• Expanded support for const generics, allowing more powerful type system abstractions.
• Optimizations in runtime memory handling and error diagnostics.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1540

1. Rust 1.53 (2021)

Rust 1.53 introduced key updates for async programming and compile-time optimizations.

Key features:

• Improved support for `async` and better handling of async runtimes.
• Performance improvements in the borrow checker and compile-time analysis.
• Optimized memory management in common collections and I/O operations.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1530

1. Rust 1.52 (2021)

Rust 1.52 focused on performance optimizations and improving concurrency features.

Key features:

• Optimizations in the runtime and memory allocator, resulting in faster performance in large-scale applications.
• Stabilized more APIs for `async` programming and concurrency control.
• Enhanced developer experience through better error messages and compile-time checks.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1520

1. Rust 1.51 (2021)

Rust 1.51 was a major release, introducing powerful features for compile-time performance and flexibility.

Key features:

• **Const Generics**: Stabilization of const generics, which allows for better compile-time evaluation of types and data.
• Improved memory safety through more stringent checks on references and data structures.
• Optimized build times and reduced compilation overhead for large codebases.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1510

1. Rust 1.50 (2021)

Rust 1.50 introduced incremental improvements to the type system and memory model.

Key features:

• Performance improvements for collections and I/O.
• Stabilized new APIs for error handling and concurrency.
• Expanded support for `const fn`, allowing for more computations at compile time.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-1500

1. Rust 1.0 (2015)

Rust 1.0 was the first stable release of the Rust programming language, focusing on safety, concurrency, and performance.

Key features:

• **Ownership model**: Rust’s memory safety features are built around the ownership system, which ensures that memory issues like data races and null pointer dereferences are avoided at compile time.
• **Concurrency**: Rust introduced a concurrency model that allows for safe multi-threading without the need for garbage collection.
• **Zero-cost abstractions**: Rust’s type system and abstractions are designed to have minimal overhead, making it suitable for systems-level programming.

Official documentation: https://doc.rust-lang.org/stable/releases.html#version-100

Rust has evolved significantly since its stable release in 2015, focusing on providing memory safety, concurrency, and performance without sacrificing developer productivity. With each version, Rust has introduced new language features, better tooling, and performance optimizations. The inclusion of generics, async/await, and incremental compilation improvements has made Rust a popular choice for systems programming, web development, and beyond. Through the constant improvement of its ecosystem and toolchain, Rust remains a leading language for modern software development.

Rust version history

GPT o1 Pro mode:

Rust Programming Language, Rust Compiler, Rust Cargo Build Tool, Rust Ownership System, Rust Borrow Checker, Rust Lifetime, Rust Crate, Rust Module, Rust Package, Rust Trait, Rust Struct, Rust Enum, Rust Function, Rust Macro, Rust Pattern Matching, Rust Closure, Rust Iterator, Rust Result Type, Rust Option Type, Rust Error Handling, Rust Vec Type, Rust String Type, Rust Slice Type, Rust Reference, Rust Mutable Reference, Rust Immutable Reference, Rust Smart Pointer, Rust Box Type, Rust Rc Type, Rust Arc Type, Rust Cell Type, Rust RefCell Type, Rust Mutex Type, Rust RwLock Type, Rust Atomic Types, Rust PhantomData, Rust Drop Trait, Rust From Trait, Rust Into Trait, Rust AsRef Trait, Rust AsMut Trait, Rust PartialEq Trait, Rust Eq Trait, Rust PartialOrd Trait, Rust Ord Trait, Rust Hash Trait, Rust Clone Trait, Rust Copy Trait, Rust Default Trait, Rust Debug Trait, Rust Display Trait, Rust ToString Trait, Rust Iterator Trait, Rust DoubleEndedIterator Trait, Rust ExactSizeIterator Trait, Rust FusedIterator Trait, Rust Extend Trait, Rust FromIterator Trait, Rust IntoIterator Trait, Rust Borrow Trait, Rust BorrowMut Trait, Rust Deref Trait, Rust DerefMut Trait, Rust Fn Trait, Rust FnMut Trait, Rust FnOnce Trait, Rust Send Marker Trait, Rust Sync Marker Trait, Rust Unpin Marker Trait, Rust Sized Marker Trait, Rust Unsized Trait, Rust Marker Traits, Rust dyn Trait, Rust Generic Type Parameter, Rust Generic Lifetime Parameter, Rust Generic Associated Type, Rust Generic Constraints, Rust Associated Type, Rust Associated Function, Rust Inherent Implementation, Rust Trait Implementation, Rust Trait Bounds, Rust Trait Object, Rust Impl Keyword, Rust Self Keyword, Rust Super Keyword, Rust Use Keyword, Rust mod Keyword, Rust pub Keyword, Rust crate Keyword, Rust extern Keyword, Rust const Keyword, Rust static Keyword, Rust async Keyword, Rust await Keyword, Rust match Keyword, Rust if let Expression, Rust while let Expression, Rust loop Keyword, Rust for Keyword, Rust break Keyword, Rust continue Keyword, Rust return Keyword, Rust move Keyword, Rust ref Keyword, Rust in Keyword, Rust Box Smart Pointer, Rust Rc Smart Pointer, Rust Arc Smart Pointer, Rust RefCell Interior Mutability, Rust Cell Interior Mutability, Rust Mutex Synchronization, Rust RwLock Synchronization, Rust AtomicBool, Rust AtomicIsize, Rust AtomicUsize, Rust AtomicPtr, Rust NonNull Pointer, Rust ManuallyDrop, Rust MaybeUninit, Rust Pin Type, Rust PhantomPinned, Rust std Library, Rust core Library, Rust alloc Library, io Module, fs Module, net Module, sync Module, thread Module, time Module, mem Module, ptr Module, slice Module, string Module, vec Module, env Module, process Module, collections Module, hash Module, fmt Module, error Module, option Module, result Module, mpsc Channel, atomic Operations, path Module, ffi Module, os Module, task Module, future Module, pin Module, marker Module, any Module, cmp Module, iter Module, ops Module, str Module, num Module, rc Module, Duration, sleep, spawn, args, var, set_var, swap, replace, take, null, null_mut, from_raw_parts, from_raw_parts_mut, from_utf8, Option, Result, Error Trait, Formatter, Display, Debug, Write Trait, Hasher, Hash, HashMap, HashSet, BTreeMap, BTreeSet, VecDeque, BinaryHeap, Iterator, IntoIterator, FromIterator, Add, Sub, Mul, Div, Rem, BitAnd, BitOr, BitXor, Not, Shl, Shr, Deref, DerefMut, Drop, Index, IndexMut, Range, RangeInclusive, RangeFrom, RangeTo, RangeFull, ControlFlow, Wrapping, NonZeroUsize, NonZeroIsize, NonZeroU8, NonZeroU16, NonZeroU32, NonZeroU64, NonZeroU128, NonZeroI8, NonZeroI16, NonZeroI32, NonZeroI64, NonZeroI128, Rust Memory Safety, Rust Zero-Cost Abstractions, Rust Ownership Rules, Rust Move Semantics, Rust Clone Semantics, Rust Copy Semantics, Rust Partial Move, Rust Pattern Destructuring, Rust Type Inference, Rust Sized Type, Rust Unsized Type, Rust Coercion, Rust DST (Dynamically Sized Type), Rust FFI (Foreign Function Interface), Rust C ABI, Rust extern Function, Rust extern Block, [repr(C)], [derive(...)] Attribute, [cfg(...)] Attribute, [test] Attribute, [macro_use] Attribute, [no_mangle] Attribute, [inline] Attribute, [inline(always)] Attribute, [inline(never)] Attribute, [cold] Attribute, [must_use] Attribute, [deny(...)] Attribute, [allow(...)] Attribute, [warn(...)] Attribute, [forbid(...)] Attribute, [non_exhaustive] Attribute, [global_allocator] Attribute, [panic_handler] Attribute, [no_std] Attribute, [no_main] Attribute, [repr(transparent)] Attribute, [repr(packed)] Attribute, [repr(align(...))] Attribute, [export_name(...)] Attribute, [link(...)] Attribute, [used] Attribute, [no_coverage] Attribute, [track_caller] Attribute, Rust Cargo, Rust cargo build, Rust cargo run, Rust cargo test, Rust cargo bench, Rust cargo doc, Rust cargo fmt, Rust cargo clippy, Rust cargo clean, Rust cargo update, Rust cargo publish, Rust cargo login, Rust cargo yank, Rust cargo install, Rust cargo uninstall, Rust cargo tree, Rust cargo metadata, Rust cargo package, Rust cargo fix, Rust cargo generate-lockfile, Rust cargo vendor, Rust cargo +nightly Command, Rust cargo workspace, Rust Cargo.toml, Rust Cargo.lock, Rust crate-type, Rust crate-name, Rust edition (2015), Rust edition (2018), Rust edition (2021), Rust edition (2024 Proposed), Rust rustc Compiler, Rust rustdoc Tool, Rust rustfmt Tool, Rust clippy Linter, Rust miri Interpreter, Rust RLS (Rust Language Server), Rust rust-analyzer, Rust cargo-make, Rust cargo-tarpaulin, Rust cargo-audit, Rust cargo-outdated, Rust cargo-expand, Rust crates.io Registry, Rust Rustup Tool, Rust rustup default, Rust rustup toolchain, Rust rustup component add, Rust rustup target add, Rust stable Channel, Rust beta Channel, Rust nightly Channel, Rust LTS (Hypothetical), Rust MSRV (Minimum Supported Rust Version), Rust RFC (Request For Comments), Rust Edition Guide, Rust The Rustonomicon, Rust The Book (The Rust Programming Language), Rust unsafe Code, Rust unsafe Block, Rust unsafe Fn, Rust unsafe Trait, Rust raw Pointer, Rust *const T, Rust *mut T, Rust Dereferencing Raw Pointer, read, write, replace, transmute, forget, align_of, size_of, zeroed, MaybeUninit, Rust Union Type, Rust extern Crate (Legacy), Rust Edition Imports (no extern keyword), Rust pub(crate) Visibility, Rust pub(super) Visibility, Rust pub(in path) Visibility, Rust pub use Re-export, Rust glob import (*), Rust underscore import (_), Rust name Mangling, Rust LTO (Link Time Optimization), Rust ThinLTO, Rust Profile-Guided Optimization (PGO), Rust Codegen Units, Rust Incremental Compilation, arch Intrinsics, Rust simd Feature, Rust specialization (nightly), Rust const fn, Rust const generics (nightly), Rust async/await, Rust Future Trait, Rust Pin<P> Type, Rust poll Function, Rust Waker, Rust Context (in async), Rust async fn, Rust async move, Rust .await Operator, Rust async Streams (nightly), Rust Generator State, Rust Generator Trait, Rust yield Keyword (nightly), Rust proc_macro Crate, Rust proc_macro_derive Macro, Rust custom_derive Macro, Rust custom_attribute Macro (deprecated), Rust attribute Macro, Rust function-like Macro, Rust declarative Macro, Rust macro_rules! Macro, Rust macro Expansion, Rust Hygiene in Macros, Rust edition macros changes, Rust procedural Macro expansion, Rust Testing Framework, [test] Function, [bench] (deprecated), [should_panic] Attribute, Rust cargo test -- --nocapture, Rust doc Tests, Rust integration Tests directory (tests), Rust benches Directory, Rust examples Directory, Rust microbenchmarking (Criterion crate), Rust fuzz Testing (cargo-fuzz), Rust Miri Testing, Rust code coverage (LLVM), Rust Crate Features (Cargo), Rust optional Dependencies, Rust dev-dependencies, Rust build-dependencies, Rust cargo features, Rust feature flags in Cargo.toml, Rust unstable features (nightly), Rust [patch] section in Cargo.toml, Rust Path dependencies, Rust Git dependencies, Rust HTTP dependencies, Rust local Registries, Rust workspaces in Cargo, Rust crates.io Publishing, Rust crates.io yank, Rust crates.io owners, Rust Documentation Comments ///, ![doc(...)], Rust Documenting Modules, Rust Documenting Struct Fields, Rust Documenting Enum Variants, Rust Documenting Functions, Rust Documenting Traits, Rust Documenting Implementations, Rust Documenting Macros, Rust Documenting Constants, Rust Doc hidden, Rust Doc no_inline, Rust Doc cfg Attributes, Rust Code Examples in Docs, Rust doctest in Documentation, Rust Cross-Compilation, Rust Targets (e.g. wasm32-unknown-unknown), Rust wasm-bindgen Integration, Rust wasm-pack Tool, Rust wasm32-wasi Target, Rust Embedded Development, Rust no_std Environments, Rust alloc Crate in no_std, Rust Core Crate in no_std, [panic_handler], [alloc_error_handler], Rust Naked functions (nightly), Rust inline Assembly (asm! Macro), Rust Linker Arguments in Cargo, Rust build scripts (build.rs), Rust env! Macro, Rust option_env! Macro, Rust include! Macro, Rust include_str! Macro, Rust include_bytes! Macro, Rust concat! Macro, Rust line! Macro, Rust column! Macro, Rust file! Macro, Rust cfg! Macro, Rust stringify! Macro, Rust format! Macro, Rust println! Macro, Rust print! Macro, Rust eprintln! Macro, Rust eprint! Macro, Rust dbg! Macro, Rust panic! Macro, Rust unreachable! Macro, Rust unimplemented! Macro, Rust todo! Macro, Rust assert! Macro, Rust assert_eq! Macro, Rust assert_ne! Macro, Rust compile_error! Macro, Rust concat_idents! Macro (nightly), Rust global_asm! Macro (nightly), Rust log crates Integration, Rust serde Crate Integration, Rust serde_derive Macro, Rust anyhow Crate for Error Handling, Rust thiserror Crate for Error Derives, Rust clap Crate for CLI Arguments, Rust structopt Crate (deprecated in favor of clap), Rust tokio Crate (Async Runtime), Rust async-std Crate, Rust futures Crate, executor, channel, stream, sink, select! Macro, Rust pin_utils Crate, Rust lazy_static Crate (deprecated in favor of once_cell), Rust once_cell Crate, Rust crossbeam Crate, Rust rayon Crate (Data Parallelism), Rust nom Crate (Parsing), Rust regex Crate, Rust hyper Crate (HTTP), Rust reqwest Crate (HTTP Client), Rust warp Crate (Web Framework), Rust rocket Crate (Web Framework), Rust actix-web Crate, Rust axum Crate, Rust tonic Crate (gRPC), Rust prost Crate (Protocol Buffers), Rust capnproto-rust Crate, Rust diesel Crate (ORM), Rust sqlx Crate (Async SQL), Rust rusqlite Crate, Rust mongodb Crate, Rust redis Crate, Rust log Crate, Rust env_logger Crate, Rust tracing Crate, Rust tracing_subscriber Crate, Rust slog Crate, Rust sloggers Crate, Rust structopt Crate, Rust clap_derive Crate, Result, Error, Error Derive, Serialize, Deserialize, Rust serde_json Crate, Rust toml Crate, Rust yaml-rust Crate, Rust bincode Crate, Rust byteorder Crate, Rust rand Crate, Rng Trait, thread_rng, StdRng, SliceRandom, Rust chrono Crate, Utc, DateTime, NaiveDate, App Builder, Arg Builder, StructOpt Derive, main Macro, spawn, select! Macro, mpsc, oneshot, Mutex, RwLock, fs, net, time, Future Trait, Stream Trait, Sink Trait, join! Macro, try_join! Macro, select_biased! Macro, Rust pin_project Crate, pin_project Macro, Rust cfg_if Crate, Rust lazy_static! Macro, Lazy, Lazy, spawn, join, scope, parallel_iterator, prelude, IResult, complete, sequence, branch, combinator, multi, character, Regex, Captures, Server, Request, Response, Body, make_service_fn, service_fn, Client, Response, Error, Filter, Reply, path, query, body, header, Rocket, ignite (Deprecated), build, routes Macro, get Macro, post Macro, State, App, HttpServer, HttpRequest, HttpResponse, Router, routing, extract, Server, Request, Response, Status, Message Trait, EncodeError, DecodeError, prelude, Connection, Queryable Derive, Insertable Derive, Pool, query, query_as, Executor, Connection, params! Macro, Client, Collection, bson, Client, Commands Trait, Rust memory Safety Guarantee, Rust fearless Concurrency, Rust RAII (Resource Acquisition Is Initialization), Rust Zero-cost Interruptions, Rust Minimal Runtime Overhead, Rust Pattern Exhaustiveness, Rust match Guards, Rust let Binding Patterns, Rust destructuring assignment (nightly), Rust never Type (!), Rust Infallible Type, TryFrom, TryInto, FromStr, parse Method, Rust borrowing &T, Rust mutable borrowing &mut T, Rust Deref coercion, Rust Slice Patterns, Rust associated consts, Rust array Types, Rust tuple Types, Rust unit Type (), Rust underscore Lifetimes, Rust underscore Import `_`, Rust underscore Variable `_var`, Rust pub(crate), Rust pub(super), Rust inline Modules mod keyword, Rust nested Modules, item, Rust crate root, Rust crate level attributes, Rust doc tests, Rust doc hidden Items, Rust doc(cfg) attribute, Rust doc include attributes, Rust doc alias attributes, Rust doc comment triple slash ///, Rust doc inline code block, Rust doc code fencing ```, Rust doctest ignore, Rust doctest no_run, Rust doctest compile_fail, Rust doctest should_panic, Rust Benchmarking (nightly), [bench] attribute (deprecated), Rust Criterion Benchmarking, Rust cross compilation with cargo, Rust rustup target list, Rust rustup target add wasm32-unknown-unknown, Rust wasm32-unknown-emscripten Target, Rust cdylib Crate Type, Rust staticlib Crate Type, Rust bin Crate Type, Rust proc-macro Crate Type, [no_main], Rust link Sections, Rust extern crate (deprecated in 2018), identifier, Rust macro 2.0 (procedural macros), Rust macro hygiene improvements, Rust macro pattern matching, Rust macro pattern repetitions, Rust macro capture variables, Rust macro scoping rules, Rust macro modularization, Rust edition idioms, Rust edition linting, Rust Rustfix Tool, Rust cargo fix --edition, Rust lint warnings, Rust deny warnings policy, Rust forbid unsafe code policy, Rust cargo deny Crate, Rust cargo crev Crate (Code Review), Rust cargo geiger (count unsafe)

GPT 4o:

ABI Compatibility, Abstract Data Types, Abstract Syntax Tree, Access Modifiers, Accumulator Idiom, AddAssign Trait, Addition Operator Overloading, Address Sanitizer, Advanced Macros, Affine Types, Alias Types, Alignment, Allocator API, Allocators, Alphanumeric Identifiers, Anonymized Lifetimes, Arc Type, Array Initialization, Array Slices, As Keyword, Async/Await Syntax, Async Functions, Atomic Operations, Atomic Reference Counting, Attribute Macros, Attributes, Await Operator, Backtrace Support, Bare Metal Programming, Beginner Errors, Benchmarking, Binary Crates, Binary Operators, Binding Modes, Bit Manipulation, Bitfields, Bitflags Crate, Bitwise Operators, Block Expressions, Box Smart Pointer, Box Type, Boxed Closures, Boxed Trait Objects, Borrow Checker, Borrow Mutability, Borrowed Pointers, Borrowed Types, Borrowing, Bounds Checking, Break Expressions, Build Automation, Build Dependencies, Build Profiles, Build Scripts, Byte Order, Byte Strings, Bytecode, C ABI Compatibility, C FFI Integration, Cargo Bench Command, Cargo Binaries, Cargo Build Command, Cargo Build Scripts, Cargo Check Command, Cargo Clean Command, Cargo Clippy, Cargo Commands, Cargo Crates, Cargo Doc Command, Cargo Features, Cargo Install Command, Cargo Integration, Cargo Lock File, Cargo Metadata, Cargo New Command, Cargo Package Manager, Cargo Publish Command, Cargo Run Command, Cargo Scripts, Cargo Semver, Cargo Subcommands, Cargo Test Command, Cargo.toml File, Casting Between Types, Cell Type, Character Encoding, Character Literals, Closures as Arguments, Closures, Coercions, Collection Types, Combined Traits, Command Line Arguments, Command Line Parsing, Comment Syntax, Common Lifetime Errors, Common Traits, Compile Time Assertions, Compile Time Errors, Compile Time Function Evaluation, Compile-Time Functions, Compiler Hints, Compiler Internals, Compiler Options, Compiler Plugins, Compiler Warnings, Complex Number Types, Complex Types, Concurrency, Conditional Compilation, Conditional Expressions, Configuration Macros, Configuration Options, Const Context, Const Evaluator, Const Expressions, Const Functions, Const Generics, Const Trait Implementations, Constant Evaluation, Constant Generics, Constant Panic, Constant Promotion, Constructors, Container Types, Content Security Policies, Contextual Keywords, Continue Expressions, Copy Elision, Copy Trait, Covariance, Crate Attributes, Crate Dependencies, Crate Documentation, Crate Export, Crate Features, Crate Graph, Crate Import, Crate Level Attributes, Crate Manifest, Crate Metadata, Crate Registry, Crate Roots, Crate Types, Crate Visibility, Crates, Cross Compilation, Cross-Crate Inlining, Custom Allocators, Custom Attributes, Custom Derive Macros, Custom DSTs, Custom Lints, Custom Macros, Custom Smart Pointers, Custom Test Frameworks, Data Alignment, Data Ownership, Data Races, Data Structures, Data Types, Dead Code Elimination, Debug Trait, Debugging Rust Code, Debugging Symbols, Decimal Literal Suffixes, Default 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