[devin-ai-integration]

Summary

This raises the example's MSRV to 1.97.0, because the daily Build and run on main has been red since 2026-10-08.

• launchdarkly-server-sdk 3.3.0 (latest; >=3.1.1 already resolves to it) depends on eventsource-client ^0.18.0. eventsource-client 0.18.1, published 2026-10-07, declares rust-version = "1.97.0".
• On rustc 1.96.0, cargo fails with: eventsource-client@0.18.1 requires rustc 1.97.0.
• The SDK made the same MSRV change upstream (fix: Bump MSRV from 1.96 to 1.97 rust-server-sdk#204, "fix: Bump MSRV from 1.96 to 1.97"). That will ship in the pending 3.3.1 release.
• Cargo.toml changes rust-version from 1.96.0 to 1.97.0, and ci.yml changes rustup override set from 1.96.0 to 1.97.0. Nothing else changes; the SDK constraint stays as it is.

Verification

Local, on rustc 1.97.0:

• cargo clippy with RUSTFLAGS="-W deprecated" produced no warnings.
• LAUNCHDARKLY_SDK_KEY=… LAUNCHDARKLY_FLAG_KEY=hello-boolean CI=1 cargo run -q printed:

*** SDK successfully initialized.
*** The hello-boolean feature flag evaluates to true

and then the banner.

On rustc 1.96.0 the build fails with the same error as the scheduled CI runs (e.g. run 38127323604).

The inbox_rx is disconnected ERROR log at shutdown is not new: the last green run on 2026-10-07 shows it too.

Link to Devin session: https://app.devin.ai/sessions/738ced6178134242807e7d6c7f0c27e3
Open in Devin Desktop: https://app.devin.ai/desktop/session/738ced6178134242807e7d6c7f0c27e3?variant=devin

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Note

Overview
Raises the project minimum supported Rust version from 1.96.0 to 1.97.0 in Cargo.toml and aligns the Build and run workflow so rustup override set uses 1.97.0.

This unblocks CI and local builds where launchdarkly-server-sdk (via eventsource-client 0.18.1) now requires rustc 1.97.0. Dependency constraints are unchanged.

^{Reviewed by Cursor Bugbot for commit 6abb8ca. Bugbot is set up for automated code reviews on this repo. Configure here.}

[devin-ai-integration]

I'll fix CI failures and address comments from users with write access. I'll skip comments containing "(aside)".

• Disable automatic comment, CI, and merge conflict monitoring

[devin-ai-integration]

@cursor review

[cursor]

Risk: low. Approved. Cursor Bugbot and Cursor Security Agent both passed with no findings, and this is a two-line MSRV/CI toolchain bump with no behavior or security changes.

  

_{Sent by Cursor Approval Agent: SDK - Pull Request Router and Approver}