AI Slop Code Risk Monitor

rust-lang/rfcs

SlopCodeMonitor badge for rust-lang/rfcs Adjusted legacy signal; badge bands: 25 / 50 / 75 (different from dashboard bands).

RFCs for changes to Rust

0.7 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for rust-lang/rfcs, a Markdown project with 6,626 GitHub stars. SynthScan examined 204,287 lines of code across 662 source files, recording 136 pattern matches distributed across 2 syntactic categories. The legacy adjusted pattern signal is 0.7 (Low pattern signal); it is not an authorship estimate.

Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.

0.7
Adjusted Signal
0.7
Raw Pattern Score
100%
Time Factor
2026-11-01
Last Push
6.6K
Stars
Markdown
Language
204.3K
Lines of Code
662
Files
136
Pattern Hits
2026-10-31
Scan Date
0.00
HC Hit Rate

Risk Review · Payload v1

Use each vector to guide manual verification of the underlying findings.

Payload schema: 1.0.0 · Engine: 2.0.0 · Scoring: heuristic-density-v1 · Scan date: 2026-10-31.

Cognitive Ownership Risk 3.2/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 135 finding(s).

Hallucinated Dependency & Supply Chain Risk 0.0/100 · LOW

Are imports declared and package/API names verified? 0 finding(s).

Agent Over-Engineering Ratio 0.1/100 · LOW

Are wrappers, guards, and repeated structures necessary? 1 finding(s).

PR Review Velocity Impact 3.3/100 · LOW

Which changes need focused human review? 136 finding(s).

What These Metrics Mean

Adjusted Signal
Legacy pattern score normalized per 1,000 scanned lines and multiplied by the repository-level time factor. It is not an estimate of AI authorship.
Raw Pattern Score
Sum of severity- and context-weighted pattern findings before applying the time factor.
Time Factor
A coarse multiplier based on repository last-push metadata. It does not identify when individual code was written.
Pattern Hits
Count of configured pattern findings. Review each location and surrounding code before acting.
HC Hit Rate
High- and critical-severity findings per scanned file. Severity is a configured detector weight, not proof of a vulnerability or authorship.
Lines / Files
Scan coverage denominators used by the legacy normalized score.

Pattern-Signal History

This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.

Severity Breakdown

Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.

CRITICAL 0HIGH 0MEDIUM 1LOW 135

Directory Score Breakdown

This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.

Pattern Findings

The scanner identified 136 distinct pattern matches across 2 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.

Over-Commented Block135 hits · 134 pts
SeverityFileLineSnippetContext
LOWtext/1194-set-recovery.md61 // At this point, the user enters commands and receives output like:COMMENT
LOWtext/2788-standard-lazy-types.md61COMMENT
LOWtext/3467-unsafe-pinned.md221/// However, even if you define your type like `pub struct Wrapper(UnsafePinned<...>)`,COMMENT
LOWtext/3467-unsafe-pinned.md281 pub fn get_mut_pinned(self: Pin<&mut Self>) -> *mut T {COMMENT
LOWtext/1696-discriminant.md41/// in the middle, or (in the case of a C-like enum) if explicitly set discriminants are changed.COMMENT
LOWtext/1845-shared-from-slice.md181 /// The allocated space of the `Vec<T>` is not reused,COMMENT
LOWtext/1845-shared-from-slice.md221 /// # ExamplesCOMMENT
LOWtext/1845-shared-from-slice.md241 ///COMMENT
LOWtext/1845-shared-from-slice.md261 }COMMENT
LOWtext/1845-shared-from-slice.md281 /// assert_eq!(rc.len(), arr.len()); // The length is the same.COMMENT
LOWtext/1845-shared-from-slice.md301 slice_to_rc(slice, |p| p, <[T]>::copy_from_slice)COMMENT
LOWtext/1845-shared-from-slice.md321 /// assert_eq!(rc.as_ref(), slice); // The elements match.COMMENT
LOWtext/1845-shared-from-slice.md341 /// #![feature(ptr_eq)]COMMENT
LOWtext/1845-shared-from-slice.md361 ///COMMENT
LOWtext/1845-shared-from-slice.md401 ///COMMENT
LOWtext/1328-global-panic-handler.md41 those values in the future.COMMENT
LOWtext/1892-uninitialized-uninhabited.md201 }COMMENT
LOWtext/1974-global-allocators.md101/// Windows, for example.COMMENT
LOWtext/3458-unsafe-fields.md421///COMMENT
LOWtext/3458-unsafe-fields.md481 type Target = T;COMMENT
LOWtext/3458-unsafe-fields.md501impl<T> DerefMut for UniqueArc<T> {COMMENT
LOWtext/1574-more-api-documentation-conventions.md81COMMENT
LOWtext/1574-more-api-documentation-conventions.md161//! slices, not ranges for sub-slices.COMMENT
LOWtext/1574-more-api-documentation-conventions.md181///COMMENT
LOWtext/1574-more-api-documentation-conventions.md201/// COMMENT
LOWtext/1574-more-api-documentation-conventions.md221 /// # SafetyCOMMENT
LOWtext/1574-more-api-documentation-conventions.md241}COMMENT
LOWtext/1574-more-api-documentation-conventions.md261///COMMENT
LOWtext/1574-more-api-documentation-conventions.md461COMMENT
LOWtext/1574-more-api-documentation-conventions.md521Below is a full crate, with documentation following these rules. I am loosely basingCOMMENT
LOWtext/1574-more-api-documentation-conventions.md541//!COMMENT
LOWtext/1574-more-api-documentation-conventions.md561/// let x = &5;COMMENT
LOWtext/1574-more-api-documentation-conventions.md581pub fn ref_slice<T>(s: &T) -> &[T] {COMMENT
LOWtext/1574-more-api-documentation-conventions.md601 /// ```COMMENT
LOWtext/1574-more-api-documentation-conventions.md621//!COMMENT
LOWtext/1574-more-api-documentation-conventions.md641/// let slice = option::ref_slice(x);COMMENT
LOWtext/0503-prelude-stabilization.md41// Boxes are a ubiquitous type in Rust used for representing an allocation withCOMMENT
LOWtext/0503-prelude-stabilization.md61// for the inclusion of these traits in the prelude.COMMENT
LOWtext/0503-prelude-stabilization.md81// are all included in the prelude by default. Note, however, that the exactCOMMENT
LOWtext/0503-prelude-stabilization.md101// The `Option` type is one of Rust's most common and ubiquitous types,COMMENT
LOWtext/0503-prelude-stabilization.md121COMMENT
LOWtext/0503-prelude-stabilization.md181pub use ascii::{Ascii, AsciiCast, OwnedAsciiCast, AsciiStr};COMMENT
LOWtext/0503-prelude-stabilization.md201// Actual usage of the `Ordering` enumeration and its variants is quite rare inCOMMENT
LOWtext/0503-prelude-stabilization.md221COMMENT
LOWtext/0503-prelude-stabilization.md241// This function is included in the prelude as a convenience function for theCOMMENT
LOWtext/2116-alloc-me-maybe.md241/// capacity is already sufficient.COMMENT
LOWtext/3498-lifetime-capture-rules-2024.md561 // `T`. Additionally, we have captured the lifetime `'x` usingCOMMENT
LOWtext/3128-io-safety.md101 // Construct a `File` from an arbitrary integer value. This type checks,COMMENT
LOWtext/3834-export-visibility.md821COMMENT
LOWtext/2592-futures.md201terms of global functions and state, on top of reference counted objects, orCOMMENT
LOWtext/2592-futures.md221 pub data: *const (),COMMENT
LOWtext/2592-futures.md241COMMENT
LOWtext/2592-futures.md341 /// - [`Poll::Ready(val)`] with the result `val` of this future if itCOMMENT
LOWtext/2592-futures.md361 /// Futures alone are *inert*; they must be *actively* `poll`ed to makeCOMMENT
LOWtext/1398-kinds-of-allocators.md1441///COMMENT
LOWtext/1398-kinds-of-allocators.md1481COMMENT
LOWtext/1398-kinds-of-allocators.md1541 Some(padded_size) => padded_size,COMMENT
LOWtext/1398-kinds-of-allocators.md1581 }COMMENT
LOWtext/1398-kinds-of-allocators.md1621 /// Creates a layout describing the record for `self` followed byCOMMENT
LOWtext/1398-kinds-of-allocators.md1641 pub unsafe fn repeat_unchecked(&self, n: usize) -> (Self, usize) {COMMENT
75 more matches not shown…
Decorative Section Separators1 hit · 2 pts
SeverityFileLineSnippetContext
MEDIUMtext/3935-Project-Goals-2026.md103 match map.get_mut(&key) { // ──────────────────┐ 'r only needs toCODE