Check your internet connection curl -v https://index.crates.io/config.json
Cargo stumbled upon a network issue while trying to reach the crates.io index. failed to download from https index.crates.io config.json
, the Rust package manager, cannot establish a network connection to the central crates registry. This is common in restricted environments, such as corporate networks or cloud-based IDEs like OpenAI Codex Common Causes & Fixes Proxy Configuration Check your internet connection curl -v https://index