[INFO] fetching crate syncpool 0.1.5...
[INFO] checking syncpool-0.1.5 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate syncpool 0.1.5 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate syncpool 0.1.5 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syncpool 0.1.5
[INFO] finished tweaking crates.io crate syncpool 0.1.5
[INFO] tweaked toml for crates.io crate syncpool 0.1.5 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate syncpool 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] 69560029519ac7a255a899824f5237d71454a9a05766aff7f5b8d4ec75c52d54
[INFO] running `Command { std: "docker" "start" "-a" "69560029519ac7a255a899824f5237d71454a9a05766aff7f5b8d4ec75c52d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69560029519ac7a255a899824f5237d71454a9a05766aff7f5b8d4ec75c52d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69560029519ac7a255a899824f5237d71454a9a05766aff7f5b8d4ec75c52d54", kill_on_drop: false }`
[INFO] [stdout] 69560029519ac7a255a899824f5237d71454a9a05766aff7f5b8d4ec75c52d54
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] dbc45db805a681d0e43a7478161af96de12c6d723c456741e6f713bf20abffaa
[INFO] running `Command { std: "docker" "start" "-a" "dbc45db805a681d0e43a7478161af96de12c6d723c456741e6f713bf20abffaa", kill_on_drop: false }`
[INFO] [stderr]     Checking syncpool v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `Command { std: "docker" "inspect" "dbc45db805a681d0e43a7478161af96de12c6d723c456741e6f713bf20abffaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbc45db805a681d0e43a7478161af96de12c6d723c456741e6f713bf20abffaa", kill_on_drop: false }`
[INFO] [stdout] dbc45db805a681d0e43a7478161af96de12c6d723c456741e6f713bf20abffaa