You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: scope_stress.rs
    path of file: ./repos/turbo/crates/turbo-tasks-memory/benches
    
    the code of the file until where you have to start completion: use anyhow::Result;
use criterion::{BenchmarkId, Criterion};
use turbo_tasks::{Completion, TryJoinIterExt, TurboTasks, Vc};
use turbo_tasks_memory::MemoryBackend;

use super::register;

pub fn scope_stress(c: &mut Criterion) {
    if matches!(
        std::env::var("TURBOPACK_BENCH_STRESS").ok().as_deref(),
        None | Some("") | Some("no") | Some("false")
    ) {
        return;
    }

    register();

    let mut group = c.benchmark_group("turbo_tasks_memory_scope_stress");
    group.sample_size(20);

    for size in [5, 10, 15, 20, 25, 30, 100, 200, 300] {
        group.throughput(criterion::Throughput::Elements(
            /* tasks for fib from 0 to size - 1 = */
            (size as u64) * (size as u64) +
            /* r
    
pub fn scope_stress(c: &mut Criterion) {
    if matches!(
        std::env::var("TURBOPACK_BENCH_STRESS").ok().as_deref(),
        None | Some("") | Some("no") | Some("false")
    ) {
        return;
    }

    register();

    let mut group = c.benchmark_group("turbo_tasks_memory_scope_stress");
    group.sample_size(20);

    for size in [5, 10, 15, 20, 25, 30, 100, 200, 300] {
        group.throughput(criterion::Throughput::Elements(
            /* tasks for fib from 0 to size - 1 = */
            (size as u64) * (size as u64) +
            /* root tasks = */
            (2 * size as u64)
                - 1,
        ));
        group.bench_with_input(
            BenchmarkId::new("rectangle", format_args!("{size} x {size}")),
            &size,
            |b, size| {
                let rt = tokio::runtime::Builder::new_multi_thread()
                    .enable_all()
                    .build()
                    .unwrap();
                let size = *size;

                b.to_async(rt).iter_with_large_drop(move || {
                    let tt = TurboTasks::new(MemoryBackend::default());
                    async move {
                        (0..size)
                            .map(|a| (a, size - 1))
                            .chain((0..size - 1).map(|b| (size - 1, b)))
                            .map(|(a, b)| {
                                let tt = &tt;
                                async move {
                                    let task = tt.spawn_once_task(async move {
                                        rectangle(a, b).strongly_consistent().await?;
                                        Ok::<Vc<()>, _>(Default::default())
                                    });
                                    tt.wait_task_completion(task, false).await
                                }
                            })
                            .try_join()
                            .await
                            .unwrap();

                        tt
                    }
                })
            },
        );
    }
}