[INFO] fetching crate cargo-lock 6.0.0...
[INFO] checking cargo-lock-6.0.0 against beta for pr-78714
[INFO] extracting crate cargo-lock 6.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate cargo-lock 6.0.0 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 cargo-lock 6.0.0
[INFO] finished tweaking crates.io crate cargo-lock 6.0.0
[INFO] tweaked toml for crates.io crate cargo-lock 6.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate cargo-lock 6.0.0 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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta" "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] bcdd8879d47f818de87c69e6a336ea80c84d688de9bbcfe5e4a99a2099019e0f
[INFO] running `Command { std: "docker" "start" "-a" "bcdd8879d47f818de87c69e6a336ea80c84d688de9bbcfe5e4a99a2099019e0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcdd8879d47f818de87c69e6a336ea80c84d688de9bbcfe5e4a99a2099019e0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcdd8879d47f818de87c69e6a336ea80c84d688de9bbcfe5e4a99a2099019e0f", kill_on_drop: false }`
[INFO] [stdout] bcdd8879d47f818de87c69e6a336ea80c84d688de9bbcfe5e4a99a2099019e0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c4268cf1318592f51fac10c0b7ec0a4ad08ab295702d7c7cfd99a5d4f88e4d7
[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" "4c4268cf1318592f51fac10c0b7ec0a4ad08ab295702d7c7cfd99a5d4f88e4d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking semver-parser v0.10.0
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]     Checking cargo-lock v6.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.60s
[INFO] running `Command { std: "docker" "inspect" "4c4268cf1318592f51fac10c0b7ec0a4ad08ab295702d7c7cfd99a5d4f88e4d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c4268cf1318592f51fac10c0b7ec0a4ad08ab295702d7c7cfd99a5d4f88e4d7", kill_on_drop: false }`
[INFO] [stdout] 4c4268cf1318592f51fac10c0b7ec0a4ad08ab295702d7c7cfd99a5d4f88e4d7