[INFO] fetching crate microkelvin 0.4.0...
[INFO] checking microkelvin-0.4.0 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate microkelvin 0.4.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate microkelvin 0.4.0 on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate microkelvin 0.4.0
[INFO] finished tweaking crates.io crate microkelvin 0.4.0
[INFO] tweaked toml for crates.io crate microkelvin 0.4.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "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-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fd3b323a811add49f0dcf819eba2756094d106d0014bd72744537da9507f71a
[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" "4fd3b323a811add49f0dcf819eba2756094d106d0014bd72744537da9507f71a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fd3b323a811add49f0dcf819eba2756094d106d0014bd72744537da9507f71a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fd3b323a811add49f0dcf819eba2756094d106d0014bd72744537da9507f71a", kill_on_drop: false }`
[INFO] [stdout] 4fd3b323a811add49f0dcf819eba2756094d106d0014bd72744537da9507f71a
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "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] 2f1a23bd5f8f95cd6f59ef2c6d592c2790e7d5d01e67f93950934ed8c67233c3
[INFO] running `Command { std: "docker" "start" "-a" "2f1a23bd5f8f95cd6f59ef2c6d592c2790e7d5d01e67f93950934ed8c67233c3", kill_on_drop: false }`
[INFO] [stderr] error: failed to download `const-arrayvec v0.2.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   unable to get packages from source
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack package `const-arrayvec v0.2.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to open `/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/const-arrayvec-0.2.1/.cargo-ok`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `Command { std: "docker" "inspect" "2f1a23bd5f8f95cd6f59ef2c6d592c2790e7d5d01e67f93950934ed8c67233c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f1a23bd5f8f95cd6f59ef2c6d592c2790e7d5d01e67f93950934ed8c67233c3", kill_on_drop: false }`
[INFO] [stdout] 2f1a23bd5f8f95cd6f59ef2c6d592c2790e7d5d01e67f93950934ed8c67233c3