[INFO] fetching crate vampire_api 0.0.1...
[INFO] checking vampire_api-0.0.1 against beta for pr-78714
[INFO] extracting crate vampire_api 0.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate vampire_api 0.0.1 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 vampire_api 0.0.1
[INFO] finished tweaking crates.io crate vampire_api 0.0.1
[INFO] tweaked toml for crates.io crate vampire_api 0.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate vampire_api 0.0.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] 42a552ca74e543e7eb52c3745b0269c404a155c286af8079ae1c7df9c759575a
[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" "42a552ca74e543e7eb52c3745b0269c404a155c286af8079ae1c7df9c759575a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42a552ca74e543e7eb52c3745b0269c404a155c286af8079ae1c7df9c759575a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42a552ca74e543e7eb52c3745b0269c404a155c286af8079ae1c7df9c759575a", kill_on_drop: false }`
[INFO] [stdout] 42a552ca74e543e7eb52c3745b0269c404a155c286af8079ae1c7df9c759575a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 5531920b64efca7994506692157bfb8b3c7d62e7f3f0d1a8e5a1be9813ba6dc7
[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" "5531920b64efca7994506692157bfb8b3c7d62e7f3f0d1a8e5a1be9813ba6dc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]     Checking futures-core v0.3.6
[INFO] [stderr]     Checking futures-io v0.3.6
[INFO] [stderr]     Checking atomic-ref2 v0.2.1
[INFO] [stderr]     Checking java-rand v0.2.0
[INFO] [stderr]     Checking collections-more v0.1.4
[INFO] [stderr]     Checking java_random v0.1.3
[INFO] [stderr]     Checking java-utils v0.1.0
[INFO] [stderr]     Checking simple-string-builder v0.2.0
[INFO] [stderr]     Checking comparator v0.2.1
[INFO] [stderr]     Checking rust_runnables v0.2.0
[INFO] [stderr]     Checking timsort v0.1.2
[INFO] [stderr]     Checking plain_enum v0.9.9
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking futures-task v0.3.6
[INFO] [stderr]     Checking ordered-float v2.0.0
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]     Checking java-properties v1.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.4.3
[INFO] [stderr]     Checking futures-channel v0.3.6
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking atomic-array v0.3.1
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking futures-util v0.3.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking buf_redux v0.6.3
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]     Checking flurry v0.3.1
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking lockfreehashmap v0.1.2
[INFO] [stderr]    Compiling steel-cent v0.2.3
[INFO] [stderr]     Checking dotproperties v0.1.0
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking log4rs v1.0.0-alpha-2
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking file_scanner v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.6
[INFO] [stderr]     Checking futures v0.3.6
[INFO] [stderr]     Checking manual_future v0.1.1
[INFO] [stderr]     Checking vampire_api v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.74s
[INFO] running `Command { std: "docker" "inspect" "5531920b64efca7994506692157bfb8b3c7d62e7f3f0d1a8e5a1be9813ba6dc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5531920b64efca7994506692157bfb8b3c7d62e7f3f0d1a8e5a1be9813ba6dc7", kill_on_drop: false }`
[INFO] [stdout] 5531920b64efca7994506692157bfb8b3c7d62e7f3f0d1a8e5a1be9813ba6dc7