[INFO] cloning repository https://github.com/marcmo/enforcer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcmo/enforcer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcmo%2Fenforcer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcmo%2Fenforcer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2643a913d7d8ee9f147ec05ae4667fefd41df63b
[INFO] checking marcmo/enforcer against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcmo%2Fenforcer" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/marcmo/enforcer on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/marcmo/enforcer
[INFO] finished tweaking git repo https://github.com/marcmo/enforcer
[INFO] tweaked toml for git repo https://github.com/marcmo/enforcer written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/marcmo/enforcer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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] 3fcc20ac57ce371b53a79506fd9314b5def99bc1532db4154dbbad6539228842
[INFO] running `Command { std: "docker" "start" "-a" "3fcc20ac57ce371b53a79506fd9314b5def99bc1532db4154dbbad6539228842", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fcc20ac57ce371b53a79506fd9314b5def99bc1532db4154dbbad6539228842", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fcc20ac57ce371b53a79506fd9314b5def99bc1532db4154dbbad6539228842", kill_on_drop: false }`
[INFO] [stdout] 3fcc20ac57ce371b53a79506fd9314b5def99bc1532db4154dbbad6539228842
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e88efd1578a45c1d1abb8537dd25767c6107789ee3457a2cce17013bd08e6ba
[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" "6e88efd1578a45c1d1abb8537dd25767c6107789ee3457a2cce17013bd08e6ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking scopeguard v0.1.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking variance v0.1.3
[INFO] [stderr]     Checking term v0.4.5
[INFO] [stderr]     Checking unic-char-range v0.9.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking scoped-pool v1.0.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking term-painter v0.2.4
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking pbr v1.0.2
[INFO] [stderr]     Checking chrono v0.4.5
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking enforcer v0.15.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.68s
[INFO] running `Command { std: "docker" "inspect" "6e88efd1578a45c1d1abb8537dd25767c6107789ee3457a2cce17013bd08e6ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e88efd1578a45c1d1abb8537dd25767c6107789ee3457a2cce17013bd08e6ba", kill_on_drop: false }`
[INFO] [stdout] 6e88efd1578a45c1d1abb8537dd25767c6107789ee3457a2cce17013bd08e6ba