[INFO] fetching crate scout 2.4.1...
[INFO] checking scout-2.4.1 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate scout 2.4.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate scout 2.4.1 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scout 2.4.1
[INFO] finished tweaking crates.io crate scout 2.4.1
[INFO] tweaked toml for crates.io crate scout 2.4.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate scout 2.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "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] b141d8fa5488a18975f232298bccf9465932b70bb069353a4acae0e8d09124e9
[INFO] running `Command { std: "docker" "start" "-a" "b141d8fa5488a18975f232298bccf9465932b70bb069353a4acae0e8d09124e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b141d8fa5488a18975f232298bccf9465932b70bb069353a4acae0e8d09124e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b141d8fa5488a18975f232298bccf9465932b70bb069353a4acae0e8d09124e9", kill_on_drop: false }`
[INFO] [stdout] b141d8fa5488a18975f232298bccf9465932b70bb069353a4acae0e8d09124e9
[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" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf7d1cabf58cc4f42f5cc1bdf51eea232f9809bc0035718ffd9887e6842fb33f
[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" "bf7d1cabf58cc4f42f5cc1bdf51eea232f9809bc0035718ffd9887e6842fb33f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking futures-core v0.3.13
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.6
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking pico-args v0.4.0
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking signal-hook v0.3.7
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking nb-connect v1.0.3
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling ctor v0.1.19
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking async-process v1.0.2
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Checking futures-executor v0.3.13
[INFO] [stderr]     Checking futures v0.3.13
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking scout v2.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.84s
[INFO] running `Command { std: "docker" "inspect" "bf7d1cabf58cc4f42f5cc1bdf51eea232f9809bc0035718ffd9887e6842fb33f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf7d1cabf58cc4f42f5cc1bdf51eea232f9809bc0035718ffd9887e6842fb33f", kill_on_drop: false }`
[INFO] [stdout] bf7d1cabf58cc4f42f5cc1bdf51eea232f9809bc0035718ffd9887e6842fb33f