[INFO] fetching crate requirements 0.3.0...
[INFO] checking requirements-0.3.0 against beta for pr-78714
[INFO] extracting crate requirements 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate requirements 0.3.0 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 requirements 0.3.0
[INFO] finished tweaking crates.io crate requirements 0.3.0
[INFO] tweaked toml for crates.io crate requirements 0.3.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate requirements 0.3.0 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 4a9e5cb6a20a462571d52d506d34a27f2e53712eeb3616f0fa5faf197a23c602
[INFO] running `Command { std: "docker" "start" "-a" "4a9e5cb6a20a462571d52d506d34a27f2e53712eeb3616f0fa5faf197a23c602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a9e5cb6a20a462571d52d506d34a27f2e53712eeb3616f0fa5faf197a23c602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a9e5cb6a20a462571d52d506d34a27f2e53712eeb3616f0fa5faf197a23c602", kill_on_drop: false }`
[INFO] [stdout] 4a9e5cb6a20a462571d52d506d34a27f2e53712eeb3616f0fa5faf197a23c602
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 51fb1d60fc6166e0550955db29a20ed7064afaf9898343e42c6d8d2a7c28734e
[INFO] running `Command { std: "docker" "start" "-a" "51fb1d60fc6166e0550955db29a20ed7064afaf9898343e42c6d8d2a7c28734e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking ignore v0.4.14
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking globwalk v0.7.3
[INFO] [stderr]     Checking requirements v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.80s
[INFO] running `Command { std: "docker" "inspect" "51fb1d60fc6166e0550955db29a20ed7064afaf9898343e42c6d8d2a7c28734e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51fb1d60fc6166e0550955db29a20ed7064afaf9898343e42c6d8d2a7c28734e", kill_on_drop: false }`
[INFO] [stdout] 51fb1d60fc6166e0550955db29a20ed7064afaf9898343e42c6d8d2a7c28734e