[INFO] fetching crate nq 0.0.6...
[INFO] checking nq-0.0.6 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate nq 0.0.6 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nq 0.0.6 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 nq 0.0.6
[INFO] finished tweaking crates.io crate nq 0.0.6
[INFO] tweaked toml for crates.io crate nq 0.0.6 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate nq 0.0.6 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-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: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] 7c4f83509e5ca34f18300883b4c96aea105d363369c0ff900d28fbc792f2b53a
[INFO] running `Command { std: "docker" "start" "-a" "7c4f83509e5ca34f18300883b4c96aea105d363369c0ff900d28fbc792f2b53a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c4f83509e5ca34f18300883b4c96aea105d363369c0ff900d28fbc792f2b53a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c4f83509e5ca34f18300883b4c96aea105d363369c0ff900d28fbc792f2b53a", kill_on_drop: false }`
[INFO] [stdout] 7c4f83509e5ca34f18300883b4c96aea105d363369c0ff900d28fbc792f2b53a
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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] 0be11943d82e70918ad2ca963c2e48644d948f0a4df6e6b30267c03fd5eefb41
[INFO] running `Command { std: "docker" "start" "-a" "0be11943d82e70918ad2ca963c2e48644d948f0a4df6e6b30267c03fd5eefb41", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking nq v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "0be11943d82e70918ad2ca963c2e48644d948f0a4df6e6b30267c03fd5eefb41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0be11943d82e70918ad2ca963c2e48644d948f0a4df6e6b30267c03fd5eefb41", kill_on_drop: false }`
[INFO] [stdout] 0be11943d82e70918ad2ca963c2e48644d948f0a4df6e6b30267c03fd5eefb41