[INFO] fetching crate wk 0.5.0...
[INFO] checking wk-0.5.0 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate wk 0.5.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate wk 0.5.0 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wk 0.5.0
[INFO] finished tweaking crates.io crate wk 0.5.0
[INFO] tweaked toml for crates.io crate wk 0.5.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate wk 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shared_child v0.3.4
[INFO] [stderr]   Downloaded os_pipe v0.8.2
[INFO] [stderr]   Downloaded whoami v0.5.3
[INFO] [stderr]   Downloaded duct v0.12.0
[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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5422bffbe091dd65d893e9c00ebf96dbabd0656e9516542bb075823a2f17d7c1
[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" "5422bffbe091dd65d893e9c00ebf96dbabd0656e9516542bb075823a2f17d7c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5422bffbe091dd65d893e9c00ebf96dbabd0656e9516542bb075823a2f17d7c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5422bffbe091dd65d893e9c00ebf96dbabd0656e9516542bb075823a2f17d7c1", kill_on_drop: false }`
[INFO] [stdout] 5422bffbe091dd65d893e9c00ebf96dbabd0656e9516542bb075823a2f17d7c1
[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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b3a0b3ebe17917fbd03f7ec3ce98720c14067c0a821c943b0f0174dd07bd725
[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" "5b3a0b3ebe17917fbd03f7ec3ce98720c14067c0a821c943b0f0174dd07bd725", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking whoami v0.5.3
[INFO] [stderr]     Checking pathdiff v0.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking app_dirs v1.2.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking shared_child v0.3.4
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking os_pipe v0.8.2
[INFO] [stderr]     Checking duct v0.12.0
[INFO] [stderr]     Checking wk v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.83s
[INFO] running `Command { std: "docker" "inspect" "5b3a0b3ebe17917fbd03f7ec3ce98720c14067c0a821c943b0f0174dd07bd725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b3a0b3ebe17917fbd03f7ec3ce98720c14067c0a821c943b0f0174dd07bd725", kill_on_drop: false }`
[INFO] [stdout] 5b3a0b3ebe17917fbd03f7ec3ce98720c14067c0a821c943b0f0174dd07bd725