[INFO] fetching crate diskus 0.6.0...
[INFO] checking diskus-0.6.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate diskus 0.6.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate diskus 0.6.0 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate diskus 0.6.0
[INFO] finished tweaking crates.io crate diskus 0.6.0
[INFO] tweaked toml for crates.io crate diskus 0.6.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate diskus 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0928743bb9701ade369d8e36b9d6039bfb950a237e083ee9cbb0f6d38cef013c
[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" "0928743bb9701ade369d8e36b9d6039bfb950a237e083ee9cbb0f6d38cef013c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0928743bb9701ade369d8e36b9d6039bfb950a237e083ee9cbb0f6d38cef013c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0928743bb9701ade369d8e36b9d6039bfb950a237e083ee9cbb0f6d38cef013c", kill_on_drop: false }`
[INFO] [stdout] 0928743bb9701ade369d8e36b9d6039bfb950a237e083ee9cbb0f6d38cef013c
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef3e7343eb956215766dd689c23581f92f4afe9cf3ab3cf5dfbbc8e55b1b4b7b
[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" "ef3e7343eb956215766dd689c23581f92f4afe9cf3ab3cf5dfbbc8e55b1b4b7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking humansize v1.1.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking num-format v0.4.0
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking diskus v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.28s
[INFO] running `Command { std: "docker" "inspect" "ef3e7343eb956215766dd689c23581f92f4afe9cf3ab3cf5dfbbc8e55b1b4b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef3e7343eb956215766dd689c23581f92f4afe9cf3ab3cf5dfbbc8e55b1b4b7b", kill_on_drop: false }`
[INFO] [stdout] ef3e7343eb956215766dd689c23581f92f4afe9cf3ab3cf5dfbbc8e55b1b4b7b