Avoid block_on inside async functions

#Metadata

Rule ID

rust.correctness.block-on-in-async

Severity

high

Confidence

0.85

Languages

rust

Presets

strict

Stability

stable

Applies to

block

Tags

concurrency, correctness, rules-catalog, rust

#Why it matters

`Handle::current().block_on`, `Runtime::block_on`, and `futures::executor::block_on` block the async executor thread and can deadlock when invoked from `async fn`.

#Remediation

Await the future directly or run blocking work on a dedicated runtime thread.

#Repository path

The generated metadata points to critiq-rules/libs/rules/catalog/rules/rust/rust.correctness.block-on-in-async.rule.yaml.