[INFO] cloning repository https://github.com/leodasvacas/futures-benchmark
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leodasvacas/futures-benchmark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleodasvacas%2Ffutures-benchmark", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleodasvacas%2Ffutures-benchmark'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a8283a443817a9854b4cace21eaf5a774070a40
[INFO] testing leodasvacas/futures-benchmark against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleodasvacas%2Ffutures-benchmark" "/workspace/builds/worker-81/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-81/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leodasvacas/futures-benchmark on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leodasvacas/futures-benchmark
[INFO] finished tweaking git repo https://github.com/leodasvacas/futures-benchmark
[INFO] tweaked toml for git repo https://github.com/leodasvacas/futures-benchmark written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate git repo https://github.com/leodasvacas/futures-benchmark already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/leodasvacas/futures-rs`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef5dc5a3ccc6752d311716cd54918e25bf3b078d91e237d9cd5b32a15d79626a
[INFO] running `Command { std: "docker" "start" "-a" "ef5dc5a3ccc6752d311716cd54918e25bf3b078d91e237d9cd5b32a15d79626a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef5dc5a3ccc6752d311716cd54918e25bf3b078d91e237d9cd5b32a15d79626a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef5dc5a3ccc6752d311716cd54918e25bf3b078d91e237d9cd5b32a15d79626a", kill_on_drop: false }`
[INFO] [stdout] ef5dc5a3ccc6752d311716cd54918e25bf3b078d91e237d9cd5b32a15d79626a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90bfd07a86bcbe6daa23b5af6e4b511a9f8fd74c973310d12cac3ba963bdc2cb
[INFO] running `Command { std: "docker" "start" "-a" "90bfd07a86bcbe6daa23b5af6e4b511a9f8fd74c973310d12cac3ba963bdc2cb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling futures v0.1.13 (https://github.com/leodasvacas/futures-rs?branch=task-rewrite-benchmark#7eeee658)
[INFO] [stderr]    Compiling future-seg-fault v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `futures::executor`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use futures::executor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `test::Bencher`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use test::Bencher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `future_seg_fault`
[INFO] [stdout]   --> src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / #![feature(test)]
[INFO] [stdout] 2  | |
[INFO] [stdout] 3  | | extern crate futures;
[INFO] [stdout] 4  | | extern crate test;
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |     b.iter(|| { task.wait_future_old() });
[INFO] [stdout] 31 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `future-seg-fault` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "90bfd07a86bcbe6daa23b5af6e4b511a9f8fd74c973310d12cac3ba963bdc2cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90bfd07a86bcbe6daa23b5af6e4b511a9f8fd74c973310d12cac3ba963bdc2cb", kill_on_drop: false }`
[INFO] [stdout] 90bfd07a86bcbe6daa23b5af6e4b511a9f8fd74c973310d12cac3ba963bdc2cb