[INFO] cloning repository https://github.com/ajh/future_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajh/future_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajh%2Ffuture_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajh%2Ffuture_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6dd157375a41e586f071ff630bc6f566e422a76a
[INFO] checking ajh/future_playground against try#e0f03aec47b100bc29555561bd62a99d1bc6aca5 for pr-86231
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajh%2Ffuture_playground" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ajh/future_playground on toolchain e0f03aec47b100bc29555561bd62a99d1bc6aca5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ajh/future_playground
[INFO] finished tweaking git repo https://github.com/ajh/future_playground
[INFO] tweaked toml for git repo https://github.com/ajh/future_playground written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ajh/future_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.18
[INFO] [stderr]   Downloaded futures-cpupool v0.1.2
[INFO] [stderr]   Downloaded tokio-core v0.1.1
[INFO] [stderr]   Downloaded futures v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8806eedcfe4fedefde67d72990b3e1a514d775a97120595286b37c2b5f8fed83
[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" "8806eedcfe4fedefde67d72990b3e1a514d775a97120595286b37c2b5f8fed83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8806eedcfe4fedefde67d72990b3e1a514d775a97120595286b37c2b5f8fed83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8806eedcfe4fedefde67d72990b3e1a514d775a97120595286b37c2b5f8fed83", kill_on_drop: false }`
[INFO] [stdout] 8806eedcfe4fedefde67d72990b3e1a514d775a97120595286b37c2b5f8fed83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50ed748b9efa9d9ef6de02da5f0883bc30ed4eb846eb1ab683a00d39fe3c19ab
[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" "50ed748b9efa9d9ef6de02da5f0883bc30ed4eb846eb1ab683a00d39fe3c19ab", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking num_cpus v1.2.0
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking futures v0.1.6
[INFO] [stderr]     Checking futures-cpupool v0.1.2
[INFO] [stderr]     Checking mio v0.6.1
[INFO] [stderr]     Checking tokio-core v0.1.1
[INFO] [stderr]     Checking tokiproto v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.40s
[INFO] running `Command { std: "docker" "inspect" "50ed748b9efa9d9ef6de02da5f0883bc30ed4eb846eb1ab683a00d39fe3c19ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50ed748b9efa9d9ef6de02da5f0883bc30ed4eb846eb1ab683a00d39fe3c19ab", kill_on_drop: false }`
[INFO] [stdout] 50ed748b9efa9d9ef6de02da5f0883bc30ed4eb846eb1ab683a00d39fe3c19ab