[INFO] fetching crate vmcircbuf 0.2.8...
[INFO] checking vmcircbuf-0.2.8 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate vmcircbuf 0.2.8 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate vmcircbuf 0.2.8 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 vmcircbuf 0.2.8
[INFO] finished tweaking crates.io crate vmcircbuf 0.2.8
[INFO] tweaked toml for crates.io crate vmcircbuf 0.2.8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef4d4afe75df2dea31fcb75f0e0d513160b97244134133caa5b833fd2e2f38a6
[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" "ef4d4afe75df2dea31fcb75f0e0d513160b97244134133caa5b833fd2e2f38a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef4d4afe75df2dea31fcb75f0e0d513160b97244134133caa5b833fd2e2f38a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef4d4afe75df2dea31fcb75f0e0d513160b97244134133caa5b833fd2e2f38a6", kill_on_drop: false }`
[INFO] [stdout] ef4d4afe75df2dea31fcb75f0e0d513160b97244134133caa5b833fd2e2f38a6
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b109ebbf75976793e41cb535e25db49fab7fa9de203034ad2815b1a8ea1f4386
[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" "b109ebbf75976793e41cb535e25db49fab7fa9de203034ad2815b1a8ea1f4386", kill_on_drop: false }`
[INFO] [stderr]     Checking vmcircbuf v0.2.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "b109ebbf75976793e41cb535e25db49fab7fa9de203034ad2815b1a8ea1f4386", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b109ebbf75976793e41cb535e25db49fab7fa9de203034ad2815b1a8ea1f4386", kill_on_drop: false }`
[INFO] [stdout] b109ebbf75976793e41cb535e25db49fab7fa9de203034ad2815b1a8ea1f4386