docs(rust): document panic autocapture

[cat-ph]

Problem

Panic autocapture shipped in the Rust SDK in v0.15.0 (PostHog/posthog-rs#157), but the Rust error tracking docs only cover manual exception capture. The merged API differs from the earlier proposal — it is opt-in through ErrorTrackingOptions::capture_panics and global-only (no standalone install_panic_hook), so this documents the API as it actually shipped.

Changes

• New "Capture panics" step in the Rust error tracking installation guide: enable capture_panics on ErrorTrackingOptionsBuilder and initialize the global client with init_global, which installs the process-wide std::panic hook
• Notes the captured properties ($exception_panic_file / _line / _column), that panics are personless, that the previous hook is chained, and the best-effort delivery bound (2s flush, no async runtime needed)
• One-line pointer to the panic step from the Rust library page

Tests

• node-free MDX: YAML frontmatter parsed, <Steps>/<Step> tags balanced (6/6)
• Every API reference verified against the merged SDK source (posthog-rs 4294c51, v0.15.0): capture_panics in the public API, init_global is async under the default feature, exact panic property names

[github-actions]

Deploy preview

Status	Details	Updated (UTC)
🟢 Ready	View preview	Jun 30, 2026 12:25PM

[github-actions]

Vale prose linter → found 3 errors, 19 warnings, 0 suggestions in your markdown

Full report → Copy the linter results into an LLM to batch-fix issues.

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contents/docs/error-tracking/installation/rust.mdx — 3 errors, 9 warnings, 0 suggestions

Line	Severity	Message	Rule
2:13	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'error tracking' for the general industry concept.	PostHogBase.ProductNames
20:1	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'Error tracking' for the general industry concept.	PostHogBase.ProductNames
29:212	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'error tracking' for the general industry concept.	PostHogBase.ProductNames
44:30	warning	'Tokio' is a possible misspelling.	PostHogBase.Spelling
44:115	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
50:72	warning	'personlessly' is a possible misspelling.	PostHogBase.Spelling
50:85	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
110:29	warning	'personless' is a possible misspelling.	PostHogBase.Spelling
112:88	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
112:366	warning	'backpressure' is a possible misspelling.	PostHogBase.Spelling
141:218	warning	'vendored' is a possible misspelling.	PostHogBase.Spelling
147:104	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'error tracking' for the general industry concept.	PostHogBase.ProductNames

contents/docs/libraries/rust/index.mdx — 0 errors, 10 warnings, 0 suggestions

Line	Severity	Message	Rule
3:18	warning	Use 'GitHub' instead of 'github'.	Vale.Terms
3:37	warning	Use 'PostHog' instead of 'posthog'.	Vale.Terms
43:4	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'Feature flags' for the general industry concept.	PostHogBase.ProductNames
43:4	warning	'Feature flags' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
55:44	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames
77:4	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'Error tracking' for the general industry concept.	PostHogBase.ProductNames
77:4	warning	'Error tracking' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
98:161	warning	Capitalize 'Error Tracking' for PostHog's product. Use 'error tracking' for the general industry concept.	PostHogBase.ProductNames
102:136	warning	Capitalize 'Logs' for PostHog's product. Use 'logs' for the general industry concept.	PostHogBase.ProductNames
118:115	warning	Capitalize 'Logs' for PostHog's product. Use 'logs' for the general industry concept.	PostHogBase.ProductNames

[github-actions]

Bundle report

Total JS (gzip)

6.24 MiB (+11.1 KiB / +0.2%)

Largest changed named chunks

Chunk	Gzip	Δ vs master
component---src-pages-self-driving-index-tsx.js	9.3 KiB	new
app.js	1977.3 KiB	+1.5 KiB / +0.1%

Eager graph (static-import closure per entrypoint)

Entrypoint	Eager size	Budget	Modules
✅ app	24.19 MiB (+6.0 KiB / +0.0%)	report-only	5516

Largest modules in the app closure

Module	Size
css ./node_modules/.pnpm/css-loader@5.2.7_webpack@5.101.3/node_modules/css-loader/dist/cjs.js??ruleSet[1].rules[8].oneOf[1].use[1]!./node_modules/.pnpm/postcss-loader@4.3.0_postcss@8.5.6_webpack@5.101.3/node_modules/postcss-loader/dist/cjs.js??ruleSet[1].rules[8].oneOf[1].use[2]!./src/styles/global.css	713.6 KiB
./src/components/Stickers/Stickers.tsx	696.4 KiB
./.cache/caches/gatsby-plugin-mdx/mdx-scopes-dir/31a094f140f119e73085d847ae81b99b.js + 2 modules	556.3 KiB
./node_modules/.pnpm/@radix-ui+react-icons@1.3.2_react@18.3.1/node_modules/@radix-ui/react-icons/dist/react-icons.esm.js	481.4 KiB
./node_modules/.pnpm/@codemirror+view@6.38.2/node_modules/@codemirror/view/dist/index.js	458.1 KiB
./node_modules/.pnpm/rehype-raw@7.0.0/node_modules/rehype-raw/lib/index.js + 29 modules	395.1 KiB
./node_modules/.pnpm/@posthog+icons@0.36.6_react-dom@18.3.1_react@18.3.1__react@18.3.1/node_modules/@posthog/icons/dist/posthog-icons.cjs.js	364.8 KiB
./node_modules/.pnpm/@posthog+icons@0.36.6_react-dom@18.3.1_react@18.3.1__react@18.3.1/node_modules/@posthog/icons/dist/posthog-icons.es.js	354.8 KiB
./src/hooks/useCustomers.tsx + 54 modules	353.9 KiB
./node_modules/.pnpm/react-markdown@8.0.7_@types+react@16.14.66_react@18.3.1/node_modules/react-markdown/lib/react-markdown.js + 88 modules	351.4 KiB
./node_modules/.pnpm/cloudinary-core@2.14.0_lodash@4.17.21/node_modules/cloudinary-core/cloudinary-core.js	281.9 KiB
./src/components/ProductComparisonTable/index.tsx + 116 modules	267.6 KiB
./node_modules/.pnpm/@codesandbox+sandpack-react@2.20.0_react-dom@18.3.1_react@18.3.1__react@18.3.1/node_modules/@codesandbox/sandpack-react/dist/index.mjs	266.6 KiB
./node_modules/.pnpm/d3@7.9.0/node_modules/d3/src/index.js + 208 modules	247.4 KiB
./src/components/Pricing/PricingSlider/Slider.tsx + 87 modules	239.9 KiB

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Eager-graph budgets are report-only until a baseline is established. Sizes are gzip of public/**/*.js; eager size is webpack module source bytes.