[INFO] fetching crate damaru 0.0.0-dummy...
[INFO] checking damaru-0.0.0-dummy against beta for pr-78714
[INFO] extracting crate damaru 0.0.0-dummy into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate damaru 0.0.0-dummy on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate damaru 0.0.0-dummy
[INFO] finished tweaking crates.io crate damaru 0.0.0-dummy
[INFO] tweaked toml for crates.io crate damaru 0.0.0-dummy written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta" "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] dbb8a5e02c57f7bbf2d621c1dc9e147ea6bd7984f51a6e228b2b07e10d6c8cec
[INFO] running `Command { std: "docker" "start" "-a" "dbb8a5e02c57f7bbf2d621c1dc9e147ea6bd7984f51a6e228b2b07e10d6c8cec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbb8a5e02c57f7bbf2d621c1dc9e147ea6bd7984f51a6e228b2b07e10d6c8cec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbb8a5e02c57f7bbf2d621c1dc9e147ea6bd7984f51a6e228b2b07e10d6c8cec", kill_on_drop: false }`
[INFO] [stdout] dbb8a5e02c57f7bbf2d621c1dc9e147ea6bd7984f51a6e228b2b07e10d6c8cec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c10a54f6ce6f92dfc453c86c9950230a6696b813ff2ba148055c1362650f2e5
[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" "2c10a54f6ce6f92dfc453c86c9950230a6696b813ff2ba148055c1362650f2e5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking damaru v0.0.0-dummy (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "2c10a54f6ce6f92dfc453c86c9950230a6696b813ff2ba148055c1362650f2e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c10a54f6ce6f92dfc453c86c9950230a6696b813ff2ba148055c1362650f2e5", kill_on_drop: false }`
[INFO] [stdout] 2c10a54f6ce6f92dfc453c86c9950230a6696b813ff2ba148055c1362650f2e5