[INFO] cloning repository https://github.com/efugier/netchat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/efugier/netchat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fefugier%2Fnetchat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fefugier%2Fnetchat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79456fea4dd42560055fa1f8bef470884a0aca24
[INFO] checking efugier/netchat against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fefugier%2Fnetchat" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/efugier/netchat on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/efugier/netchat
[INFO] finished tweaking git repo https://github.com/efugier/netchat
[INFO] tweaked toml for git repo https://github.com/efugier/netchat written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/efugier/netchat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a10d4317f6264c68a8e720a2ab667c6839c608439ee09891c368894bcd15b557
[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" "a10d4317f6264c68a8e720a2ab667c6839c608439ee09891c368894bcd15b557", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a10d4317f6264c68a8e720a2ab667c6839c608439ee09891c368894bcd15b557", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a10d4317f6264c68a8e720a2ab667c6839c608439ee09891c368894bcd15b557", kill_on_drop: false }`
[INFO] [stdout] a10d4317f6264c68a8e720a2ab667c6839c608439ee09891c368894bcd15b557
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39fe875404f128eaa5e58c363d672f63d5de87376000a83dc69cf9ca1cca09da
[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" "39fe875404f128eaa5e58c363d672f63d5de87376000a83dc69cf9ca1cca09da", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling cc v1.0.35
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking tempfile v3.0.7
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]     Checking gag v0.1.10
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]     Checking tui v0.5.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking backtrace v0.3.15
[INFO] [stderr]     Checking color-backtrace v0.1.3
[INFO] [stderr]    Compiling shrinkwraprs v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking netchat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.52s
[INFO] running `Command { std: "docker" "inspect" "39fe875404f128eaa5e58c363d672f63d5de87376000a83dc69cf9ca1cca09da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39fe875404f128eaa5e58c363d672f63d5de87376000a83dc69cf9ca1cca09da", kill_on_drop: false }`
[INFO] [stdout] 39fe875404f128eaa5e58c363d672f63d5de87376000a83dc69cf9ca1cca09da