zed-industries/zed · error

Not currently supported for docker_exec

Error message

Not currently supported for docker_exec

What it means

In DockerRemoteConnection::build_forward_ports_command: port forwarding is not implemented for docker-exec connections (docker exec provides no port-forward mechanism), so the call unconditionally returns this error.

Source

Thrown at crates/remote/src/transport/docker.rs:849

        match interactive {
            Interactive::Yes => docker_args.push("-it".to_string()),
            Interactive::No => docker_args.push("-i".to_string()),
        }
        docker_args.push(self.connection_options.container_id.to_string());

        docker_args.append(&mut inner_program);

        Ok(CommandTemplate {
            program: self.docker_cli().to_string(),
            args: docker_args,
            // Docker-exec pipes in environment via the "-e" argument
            env: Default::default(),
        })
    }

    fn build_forward_ports_command(
        &self,
        _forwards: Vec<(u16, String, u16)>,
    ) -> Result<CommandTemplate> {
        Err(anyhow::anyhow!("Not currently supported for docker_exec"))
    }

    fn connection_options(&self) -> RemoteConnectionOptions {
        RemoteConnectionOptions::Docker(self.connection_options.clone())
    }

    fn path_style(&self) -> PathStyle {
        self.path_style.unwrap_or(PathStyle::Unix)
    }

    fn remote_platform(&self) -> RemotePlatform {
        // Docker containers are always Linux; the platform is populated during
        // setup, so this fallback is only for the brief pre-detection window.
        self.remote_platform.unwrap_or(RemotePlatform {
            os: RemoteOs::Linux,
            arch: RemoteArch::X86_64,

View on GitHub (pinned to 5a9b9558db)

Solutions

1. Use a full dev container (docker) connection instead of docker exec
2. Forward ports manually via docker CLI

When it happens

Trigger: Thrown at crates/remote/src/transport/docker.rs:846 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of zed-industries/zed@5a9b9558db (2026-08-20). Data as JSON: /api/errors/fe37bb758ff804ff. Report an issue: GitHub.