[INFO] cloning repository https://github.com/Frederik-Baetens/sled_async_flush_freeze
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Frederik-Baetens/sled_async_flush_freeze" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrederik-Baetens%2Fsled_async_flush_freeze", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrederik-Baetens%2Fsled_async_flush_freeze'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7300fc57864669c25c5e9e34400c5b24edb1b1cc
[INFO] testing Frederik-Baetens/sled_async_flush_freeze against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrederik-Baetens%2Fsled_async_flush_freeze" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Frederik-Baetens/sled_async_flush_freeze on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-11/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Frederik-Baetens/sled_async_flush_freeze
[INFO] finished tweaking git repo https://github.com/Frederik-Baetens/sled_async_flush_freeze
[INFO] tweaked toml for git repo https://github.com/Frederik-Baetens/sled_async_flush_freeze written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/Frederik-Baetens/sled_async_flush_freeze already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6f71d59326b41e2a54251a126d3434ea59b72a32289b3124a9fa9b329bfb0d13
[INFO] running `Command { std: "docker" "start" "-a" "6f71d59326b41e2a54251a126d3434ea59b72a32289b3124a9fa9b329bfb0d13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f71d59326b41e2a54251a126d3434ea59b72a32289b3124a9fa9b329bfb0d13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f71d59326b41e2a54251a126d3434ea59b72a32289b3124a9fa9b329bfb0d13", kill_on_drop: false }`
[INFO] [stdout] 6f71d59326b41e2a54251a126d3434ea59b72a32289b3124a9fa9b329bfb0d13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0869978598e66c5bfdaaa8113cbf72e38662d9d7dfae2be7e8f356eb70edd647
[INFO] running `Command { std: "docker" "start" "-a" "0869978598e66c5bfdaaa8113cbf72e38662d9d7dfae2be7e8f356eb70edd647", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling mio v0.8.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling sled v0.34.7
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling sledtest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `tokio::task::JoinSet`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::task::JoinSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^ no `JoinSet` in `task`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sledtest` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "0869978598e66c5bfdaaa8113cbf72e38662d9d7dfae2be7e8f356eb70edd647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0869978598e66c5bfdaaa8113cbf72e38662d9d7dfae2be7e8f356eb70edd647", kill_on_drop: false }`
[INFO] [stdout] 0869978598e66c5bfdaaa8113cbf72e38662d9d7dfae2be7e8f356eb70edd647