[INFO] fetching crate multihash-derive 0.7.0...
[INFO] checking multihash-derive-0.7.0 against beta for pr-78714
[INFO] extracting crate multihash-derive 0.7.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate multihash-derive 0.7.0 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 multihash-derive 0.7.0
[INFO] finished tweaking crates.io crate multihash-derive 0.7.0
[INFO] tweaked toml for crates.io crate multihash-derive 0.7.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 5c119a375189faa88e39392af324e121f2338f72b2f691bd913dbc2678b27b56
[INFO] running `Command { std: "docker" "start" "-a" "5c119a375189faa88e39392af324e121f2338f72b2f691bd913dbc2678b27b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c119a375189faa88e39392af324e121f2338f72b2f691bd913dbc2678b27b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c119a375189faa88e39392af324e121f2338f72b2f691bd913dbc2678b27b56", kill_on_drop: false }`
[INFO] [stdout] 5c119a375189faa88e39392af324e121f2338f72b2f691bd913dbc2678b27b56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] fae9b6334578e70f84976c4f8bf633d93af1641ce0e8ecb872eaf92012b46b70
[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" "fae9b6334578e70f84976c4f8bf633d93af1641ce0e8ecb872eaf92012b46b70", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v1.0.48
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking proc-macro-error v1.0.4
[INFO] [stderr]     Checking synstructure v0.12.4
[INFO] [stderr]     Checking multihash-derive v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.51s
[INFO] running `Command { std: "docker" "inspect" "fae9b6334578e70f84976c4f8bf633d93af1641ce0e8ecb872eaf92012b46b70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fae9b6334578e70f84976c4f8bf633d93af1641ce0e8ecb872eaf92012b46b70", kill_on_drop: false }`
[INFO] [stdout] fae9b6334578e70f84976c4f8bf633d93af1641ce0e8ecb872eaf92012b46b70