rust-lang/rust — 5,360,747 lines, Rust 71.1%

01Overview

rust · 4,173,547 lines of actual code

42,857

Files

4,173,547

Code lines

712,449

Comments

45

Languages

297,639

Complexity

4

Secrets

Line Composition 5,360,747 total lines

Code4,173,54777.9%

Blank474,7518.9%

Comments712,44913.3%

~99%

tokens saved

Reading rust-lang/rust via an LLM

~29.2M 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

38,285

2,968,807

71.1%

JSON

64

361,830

8.7%

HTML

139

317,350

7.6%

XML

7

158,416

3.8%

Markdown

1,488

118,510

2.8%

Patch

998

65,874

1.6%

YAML

84

42,178

1.0%

JavaScript

168

19,580

0.5%

Plain Text

210

17,599

0.4%

+ 36 more

—

90,010

·

Tech Stack (68 detected)

Rust Standard Library 375210 modules Tracing Crate 558 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 Tokio (Async Runtime) 7 Uuid Crate 7 RustCrypto Crates 6 Lazy_static / Once_cell 5 Node.js OS 5 Node.js Child Process 4 Mio (Low-level IO) 3 Url Crate 3 C Standard Library (in C++) 2 Hyper (HTTP Implementation) 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	4,182	1,362
compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs	6,347	1,319
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_resolve/src/late/diagnostics.rs	4,412	979
compiler/rustc_middle/src/ty/print/pretty.rs	2,883	941
compiler/rustc_parse/src/parser/expr.rs	3,434	853
compiler/rustc_hir_typeck/src/method/suggest.rs	4,506	850

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	25,587	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

26820

Info

18391

Error

4

Total

45,215

By Category

accessibility 473 concurrency 3 correctness 22949 maintainability 5375 modernization 4 performance 3315 safety 12887 security 209

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

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:75

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:76

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

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