[INFO] fetching crate serde_prometheus 0.1.5...
[INFO] checking serde_prometheus-0.1.5 against beta for pr-78714
[INFO] extracting crate serde_prometheus 0.1.5 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate serde_prometheus 0.1.5 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 serde_prometheus 0.1.5
[INFO] finished tweaking crates.io crate serde_prometheus 0.1.5
[INFO] tweaked toml for crates.io crate serde_prometheus 0.1.5 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate serde_prometheus 0.1.5 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] ccfc66a0e2e6ba176a9879b1501f8143dbaf1dda4310b805201cd7dcdf94e0b0
[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" "ccfc66a0e2e6ba176a9879b1501f8143dbaf1dda4310b805201cd7dcdf94e0b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccfc66a0e2e6ba176a9879b1501f8143dbaf1dda4310b805201cd7dcdf94e0b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccfc66a0e2e6ba176a9879b1501f8143dbaf1dda4310b805201cd7dcdf94e0b0", kill_on_drop: false }`
[INFO] [stdout] ccfc66a0e2e6ba176a9879b1501f8143dbaf1dda4310b805201cd7dcdf94e0b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] f69a2a6cff1a6478e7414c37f173fa6371e1a9e8e54e9fada6a86fa5c028b5c2
[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" "f69a2a6cff1a6478e7414c37f173fa6371e1a9e8e54e9fada6a86fa5c028b5c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling syn v1.0.20
[INFO] [stderr]    Compiling auto_enums_derive v0.5.10
[INFO] [stderr]     Checking ftoa v0.1.1
[INFO] [stderr]     Checking atomic v0.4.5
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking hdrhistogram v7.1.0
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling derive_utils v0.9.1
[INFO] [stderr]    Compiling auto_enums_core v0.5.10
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling snafu-derive v0.6.8
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.20
[INFO] [stderr]     Checking snafu v0.6.8
[INFO] [stderr]     Checking auto_enums v0.5.10
[INFO] [stderr]    Compiling synattra v0.2.0
[INFO] [stderr]    Compiling aspect-weave v0.2.0
[INFO] [stderr]    Compiling metered-macro v0.4.0
[INFO] [stderr]     Checking aspect v0.2.0
[INFO] [stderr]     Checking serde v1.0.110
[INFO] [stderr]     Checking metered v0.4.0
[INFO] [stderr]     Checking serde_prometheus v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.26s
[INFO] running `Command { std: "docker" "inspect" "f69a2a6cff1a6478e7414c37f173fa6371e1a9e8e54e9fada6a86fa5c028b5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f69a2a6cff1a6478e7414c37f173fa6371e1a9e8e54e9fada6a86fa5c028b5c2", kill_on_drop: false }`
[INFO] [stdout] f69a2a6cff1a6478e7414c37f173fa6371e1a9e8e54e9fada6a86fa5c028b5c2