[INFO] fetching crate yambler 0.2.0...
[INFO] checking yambler-0.2.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate yambler 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate yambler 0.2.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yambler 0.2.0
[INFO] finished tweaking crates.io crate yambler 0.2.0
[INFO] tweaked toml for crates.io crate yambler 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate yambler 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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] dfd12eb3a40d4b5f25a8cb3a001c39f4dc74bc2599434f3627166e2cfba1edc2
[INFO] running `Command { std: "docker" "start" "-a" "dfd12eb3a40d4b5f25a8cb3a001c39f4dc74bc2599434f3627166e2cfba1edc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfd12eb3a40d4b5f25a8cb3a001c39f4dc74bc2599434f3627166e2cfba1edc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfd12eb3a40d4b5f25a8cb3a001c39f4dc74bc2599434f3627166e2cfba1edc2", kill_on_drop: false }`
[INFO] [stdout] dfd12eb3a40d4b5f25a8cb3a001c39f4dc74bc2599434f3627166e2cfba1edc2
[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" "+90442458ac46b1d5eed752c316da25450f67285b" "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] 46aba8ba44b0f904b75fea26af52e4cdd0d9a575676bd7a77a2ef9e23a09e16a
[INFO] running `Command { std: "docker" "start" "-a" "46aba8ba44b0f904b75fea26af52e4cdd0d9a575676bd7a77a2ef9e23a09e16a", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking yambler v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.54s
[INFO] running `Command { std: "docker" "inspect" "46aba8ba44b0f904b75fea26af52e4cdd0d9a575676bd7a77a2ef9e23a09e16a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46aba8ba44b0f904b75fea26af52e4cdd0d9a575676bd7a77a2ef9e23a09e16a", kill_on_drop: false }`
[INFO] [stdout] 46aba8ba44b0f904b75fea26af52e4cdd0d9a575676bd7a77a2ef9e23a09e16a