[INFO] fetching crate rwog 0.2.3...
[INFO] checking rwog-0.2.3 against master#c919f490bbcd2b29b74016101f7ec71aaa24bdbb for pr-79073
[INFO] extracting crate rwog 0.2.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rwog 0.2.3 on toolchain c919f490bbcd2b29b74016101f7ec71aaa24bdbb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rwog 0.2.3
[INFO] finished tweaking crates.io crate rwog 0.2.3
[INFO] tweaked toml for crates.io crate rwog 0.2.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "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] 02a10e817de421b87f337536fc0862c4323871c1f15bf46e4203ca8414ab8faa
[INFO] running `Command { std: "docker" "start" "-a" "02a10e817de421b87f337536fc0862c4323871c1f15bf46e4203ca8414ab8faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02a10e817de421b87f337536fc0862c4323871c1f15bf46e4203ca8414ab8faa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02a10e817de421b87f337536fc0862c4323871c1f15bf46e4203ca8414ab8faa", kill_on_drop: false }`
[INFO] [stdout] 02a10e817de421b87f337536fc0862c4323871c1f15bf46e4203ca8414ab8faa
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+c919f490bbcd2b29b74016101f7ec71aaa24bdbb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 87d6e621b9e2c73b8e7f2f72b3d7f1252fd1d0c02cc27c2ee452ecfe0322b41f
[INFO] running `Command { std: "docker" "start" "-a" "87d6e621b9e2c73b8e7f2f72b3d7f1252fd1d0c02cc27c2ee452ecfe0322b41f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking users v0.6.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking caps v0.2.0
[INFO] [stderr]     Checking rwog v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.73s
[INFO] running `Command { std: "docker" "inspect" "87d6e621b9e2c73b8e7f2f72b3d7f1252fd1d0c02cc27c2ee452ecfe0322b41f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87d6e621b9e2c73b8e7f2f72b3d7f1252fd1d0c02cc27c2ee452ecfe0322b41f", kill_on_drop: false }`
[INFO] [stdout] 87d6e621b9e2c73b8e7f2f72b3d7f1252fd1d0c02cc27c2ee452ecfe0322b41f