[INFO] fetching crate yaml-rust 0.4.4...
[INFO] checking yaml-rust-0.4.4 against beta for pr-78714
[INFO] extracting crate yaml-rust 0.4.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate yaml-rust 0.4.4 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yaml-rust 0.4.4
[INFO] finished tweaking crates.io crate yaml-rust 0.4.4
[INFO] tweaked toml for crates.io crate yaml-rust 0.4.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate yaml-rust 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e4873a7d3758a71fe14262b82795aa0e7fffbaa816c1a3aa9db3fad848daba3
[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" "1e4873a7d3758a71fe14262b82795aa0e7fffbaa816c1a3aa9db3fad848daba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e4873a7d3758a71fe14262b82795aa0e7fffbaa816c1a3aa9db3fad848daba3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4873a7d3758a71fe14262b82795aa0e7fffbaa816c1a3aa9db3fad848daba3", kill_on_drop: false }`
[INFO] [stdout] 1e4873a7d3758a71fe14262b82795aa0e7fffbaa816c1a3aa9db3fad848daba3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05815ff328c0d350526301d564cbbff4ef84593e6eac30f447e92c66eff84f54
[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" "05815ff328c0d350526301d564cbbff4ef84593e6eac30f447e92c66eff84f54", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking linked-hash-map v0.5.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking yaml-rust v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.62s
[INFO] running `Command { std: "docker" "inspect" "05815ff328c0d350526301d564cbbff4ef84593e6eac30f447e92c66eff84f54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05815ff328c0d350526301d564cbbff4ef84593e6eac30f447e92c66eff84f54", kill_on_drop: false }`
[INFO] [stdout] 05815ff328c0d350526301d564cbbff4ef84593e6eac30f447e92c66eff84f54