[INFO] fetching crate slog-env-cfg 0.6.0...
[INFO] checking slog-env-cfg-0.6.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate slog-env-cfg 0.6.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate slog-env-cfg 0.6.0 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slog-env-cfg 0.6.0
[INFO] finished tweaking crates.io crate slog-env-cfg 0.6.0
[INFO] tweaked toml for crates.io crate slog-env-cfg 0.6.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate slog-env-cfg 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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] 172048f583d239ff867498d0e104d478b44dd59924762d0c0d69309e8a00984f
[INFO] running `Command { std: "docker" "start" "-a" "172048f583d239ff867498d0e104d478b44dd59924762d0c0d69309e8a00984f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "172048f583d239ff867498d0e104d478b44dd59924762d0c0d69309e8a00984f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "172048f583d239ff867498d0e104d478b44dd59924762d0c0d69309e8a00984f", kill_on_drop: false }`
[INFO] [stdout] 172048f583d239ff867498d0e104d478b44dd59924762d0c0d69309e8a00984f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ebdad10d3d04e78329c6e4e418487a910c025b4978ebf5c54a33a80d9dbfdc9
[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" "9ebdad10d3d04e78329c6e4e418487a910c025b4978ebf5c54a33a80d9dbfdc9", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking slog-scope v4.1.2
[INFO] [stderr]     Checking serial_test v0.2.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam v0.7.2
[INFO] [stderr]     Checking slog-stdlog v4.0.0
[INFO] [stderr]     Checking slog-term v2.4.1
[INFO] [stderr]     Checking slog-envlogger v2.2.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking slog-json v2.3.0
[INFO] [stderr]     Checking slog-env-cfg v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serial_test_derive v0.2.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.79s
[INFO] running `Command { std: "docker" "inspect" "9ebdad10d3d04e78329c6e4e418487a910c025b4978ebf5c54a33a80d9dbfdc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ebdad10d3d04e78329c6e4e418487a910c025b4978ebf5c54a33a80d9dbfdc9", kill_on_drop: false }`
[INFO] [stdout] 9ebdad10d3d04e78329c6e4e418487a910c025b4978ebf5c54a33a80d9dbfdc9