[INFO] cloning repository https://github.com/modeverv/Rust2019asyncawait
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/modeverv/Rust2019asyncawait" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodeverv%2FRust2019asyncawait", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodeverv%2FRust2019asyncawait'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4362f61cc306f9e0c2e04f268e5d67802f30c76
[INFO] checking modeverv/Rust2019asyncawait against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmodeverv%2FRust2019asyncawait" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/modeverv/Rust2019asyncawait on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/modeverv/Rust2019asyncawait
[INFO] finished tweaking git repo https://github.com/modeverv/Rust2019asyncawait
[INFO] tweaked toml for git repo https://github.com/modeverv/Rust2019asyncawait written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/modeverv/Rust2019asyncawait already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mio-uds v0.6.7
[INFO] [stderr]   Downloaded socket2 v0.3.11
[INFO] [stderr]   Downloaded arc-swap v0.4.4
[INFO] [stderr]   Downloaded bytes v0.5.3
[INFO] [stderr]   Downloaded num_cpus v1.11.1
[INFO] [stderr]   Downloaded futures-core v0.3.1
[INFO] [stderr]   Downloaded miow v0.3.3
[INFO] [stderr]   Downloaded mio-named-pipes v0.1.6
[INFO] [stderr]   Downloaded hermit-abi v0.1.5
[INFO] [stderr]   Downloaded pin-project-lite v0.1.1
[INFO] [stderr]   Downloaded tokio v0.2.6
[INFO] [stderr]   Downloaded tokio-macros v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 881d90ff745e7255b7b40930615216850a229da386a8934173e52e1000229b2c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "881d90ff745e7255b7b40930615216850a229da386a8934173e52e1000229b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "881d90ff745e7255b7b40930615216850a229da386a8934173e52e1000229b2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "881d90ff745e7255b7b40930615216850a229da386a8934173e52e1000229b2c", kill_on_drop: false }`
[INFO] [stdout] 881d90ff745e7255b7b40930615216850a229da386a8934173e52e1000229b2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92d199e05f7dcbf750c6c253f5fd3f42760b92c9c1a684e673088af28688f71f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "92d199e05f7dcbf750c6c253f5fd3f42760b92c9c1a684e673088af28688f71f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.1.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling tokio-macros v0.2.1
[INFO] [stderr]     Checking tokio v0.2.6
[INFO] [stderr]     Checking await-async v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.19s
[INFO] running `Command { std: "docker" "inspect" "92d199e05f7dcbf750c6c253f5fd3f42760b92c9c1a684e673088af28688f71f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92d199e05f7dcbf750c6c253f5fd3f42760b92c9c1a684e673088af28688f71f", kill_on_drop: false }`
[INFO] [stdout] 92d199e05f7dcbf750c6c253f5fd3f42760b92c9c1a684e673088af28688f71f