[INFO] fetching crate cargo-feature 0.5.0...
[INFO] checking cargo-feature-0.5.0 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate cargo-feature 0.5.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cargo-feature 0.5.0 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-feature 0.5.0
[INFO] finished tweaking crates.io crate cargo-feature 0.5.0
[INFO] tweaked toml for crates.io crate cargo-feature 0.5.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cargo-feature 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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] d825ad1ba741f8fae845de50c22549339c0d9281468165cd708b87dacb3839eb
[INFO] running `Command { std: "docker" "start" "-a" "d825ad1ba741f8fae845de50c22549339c0d9281468165cd708b87dacb3839eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d825ad1ba741f8fae845de50c22549339c0d9281468165cd708b87dacb3839eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d825ad1ba741f8fae845de50c22549339c0d9281468165cd708b87dacb3839eb", kill_on_drop: false }`
[INFO] [stdout] d825ad1ba741f8fae845de50c22549339c0d9281468165cd708b87dacb3839eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5ca058eae320dce379f28c123710c352e0cc7219026456690ebec99d686bd85
[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" "b5ca058eae320dce379f28c123710c352e0cc7219026456690ebec99d686bd85", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ascii v0.9.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking pad v0.1.6
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking combine v3.8.1
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking assert_cmd v1.0.1
[INFO] [stderr]     Checking toml_edit v0.2.0
[INFO] [stderr]     Checking cargo-feature v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.58s
[INFO] running `Command { std: "docker" "inspect" "b5ca058eae320dce379f28c123710c352e0cc7219026456690ebec99d686bd85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5ca058eae320dce379f28c123710c352e0cc7219026456690ebec99d686bd85", kill_on_drop: false }`
[INFO] [stdout] b5ca058eae320dce379f28c123710c352e0cc7219026456690ebec99d686bd85