rust-lang/rust — 5,308,824 lines, Rust 71.1%

01Overview

rust · 4,137,604 lines of actual code

42,425

Files

4,137,604

Code lines

703,430

Comments

44

Languages

292,274

Complexity

4

Secrets

Line Composition 5,308,824 total lines

Code4,137,60477.9%

Blank467,7908.8%

Comments703,43013.3%

~99%

tokens saved

Reading rust-lang/rust via an LLM

~29.0M tokens → ~1.4k tokens via code_analyze

The entire repo summarised by code_analyze — structured JSON in <2k tokens. The dossier above is built from one call. Drill into specifics with code_search.

02Languages & Tech Stack

what it’s written in, what it depends on

Language Breakdown

Language

Files

Code

Share

Rust

37,908

2,943,375

71.1%

JSON

59

355,083

8.6%

HTML

139

317,349

7.7%

XML

7

158,416

3.8%

Markdown

1,484

117,926

2.9%

Patch

965

63,498

1.5%

YAML

83

41,964

1.0%

JavaScript

166

19,429

0.5%

Plain Text

210

17,611

0.4%

+ 35 more

—

89,560

·

Tech Stack (68 detected)

Rust Standard Library 370510 modules Tracing Crate 556 Config (config-rs) 211 Serde 124 Anyhow 67 Regex Crate 60 Rand Crate 45 Clap 24 Rayon (Parallelism) 14 Chrono (Date/Time) 12 Log Crate (Facade) 12 Node.js Path 11 Futures Crate 10 Thiserror 8 Node.js File System 7 RustCrypto Crates 7 Tokio (Async Runtime) 7 Uuid Crate 7 Lazy_static / Once_cell 5 Node.js OS 5 Node.js Child Process 4 Url Crate 3 C Standard Library (in C++) 2 Hyper (HTTP Implementation) 2 Mio (Low-level IO) 2 Nix (Unix API) 2 StructOpt 2 Beautiful Soup 1 Electron 1 Lodash 1 Notify (File watcher) 1 Ring 1 unittest.mock / mock 1 Standard Library 19019 modules C++ Standard Library 85 modules POSIX 22 modules

03Notable Files

where complexity and size live

Most Complex

File	Lines	Cx
tests/ui/expr/if/expr-stack-overflow.rs	10,416	15,615
src/tools/rust-analyzer/crates/syntax/src/ast/generated/nodes.rs	11,027	2,451
src/librustdoc/html/static/js/search.js	4,160	1,326
compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs	6,342	1,323
library/stdarch/crates/core_arch/src/aarch64/sve/ld_st_tests_aarch64.rs	12,786	1,200
tests/ui/try-trait/deep-try-chain-issue-153583.rs	4	1,152
compiler/rustc_middle/src/ty/print/pretty.rs	2,877	935
compiler/rustc_resolve/src/late/diagnostics.rs	4,187	900
compiler/rustc_parse/src/parser/expr.rs	3,489	855
compiler/rustc_hir_typeck/src/method/suggest.rs	4,495	848

Largest

File	Lines	Cx
library/stdarch/intrinsics_data/arm_intrinsics.json	319,341	0
src/doc/rustc-dev-guide/src/queries/example-0.html	313,328	0
library/stdarch/intrinsics_data/x86-intel.xml	158,323	0
library/stdarch/crates/core_arch/src/arm_shared/neon/generated.rs	71,298	241
library/stdarch/crates/core_arch/src/x86/avx512f.rs	48,200	247
library/stdarch/crates/core_arch/src/aarch64/sve/generated.rs	44,972	27
library/stdarch/crates/core_arch/src/aarch64/neon/generated.rs	31,516	242
src/tools/rust-analyzer/crates/ide-db/src/generated/lints.rs	24,317	0
library/stdarch/crates/core_arch/src/aarch64/sve2/generated.rs	23,871	190
library/stdarch/crates/core_arch/src/x86/avx512fp16.rs	19,214	68

04Code Quality

style, correctness, and maintainability findings

By Severity & Category

Warning

26828

Info

18238

Error

4

Total

45,070

By Category

accessibility 460 concurrency 3 correctness 22893 maintainability 5355 modernization 4 performance 3291 safety 12858 security 206

Top Findings

Warning: '.unwrap()' will panic on None/Err variants. Prefer using pattern matching (match, if let), combinators (map, and_then), or the '?' operator for robust error handling. ×2

compiler/rustc/build.rs:32 + 1 more

Warning: Direct indexing (e.g., `vec[i]`, `slice[i]`) panics on out-of-bounds access. Prefer using `.get(index)` or `.get_mut(index)` which return Option<&T>/Option<&mut T>. ×2

compiler/rustc_abi/src/extern_abi.rs:153 + 1 more

Warning: '.expect()' will panic with a custom message on None/Err. While better than unwrap() for debugging, prefer non-panicking error handling in production code (match, if let, ?).

compiler/rustc_abi/src/layout.rs:307

05Secrets & Credentials

pattern-based scan for hardcoded secrets

generic-credential-uri — Detected a password embedded in a service connection URI, which may expose direct access to the referenced service.

src/ci/publish_toolstate.sh:16

aws-access-key-id — Identified a standalone AWS access key ID, with no AWS secret access key beside it. Graded low because a key ID is the public half of the credential and authenticates nothing on its own: the secret access key is what signs a request. It is still worth acting on. It names the AWS account and the IAM identity it was issued under, it shows this code reaches AWS with a long-lived key rather than a role, and it completes an attack if the matching secret leaked anywhere else. Check whether the key is still active and rotate it if it is.

src/ci/github-actions/jobs.yml:73

aws-access-key-id — Identified a standalone AWS access key ID, with no AWS secret access key beside it. Graded low because a key ID is the public half of the credential and authenticates nothing on its own: the secret access key is what signs a request. It is still worth acting on. It names the AWS account and the IAM identity it was issued under, it shows this code reaches AWS with a long-lived key rather than a role, and it completes an attack if the matching secret leaked anywhere else. Check whether the key is still active and rotate it if it is.

src/ci/github-actions/jobs.yml:74

generic-credential-uri — Detected a password embedded in a service connection URI, which may expose direct access to the referenced service.

src/bootstrap/src/core/build_steps/toolstate.rs:334

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