[INFO] fetching crate stakker 0.2.4...
[INFO] building stakker-0.2.4 against master#d5c88c22807925c189328ef9d923c5d2b11a95b8 for pr-87066-3
[INFO] extracting crate stakker 0.2.4 into /workspace/builds/worker-87/source
[INFO] validating manifest of crates.io crate stakker 0.2.4 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stakker 0.2.4
[INFO] finished tweaking crates.io crate stakker 0.2.4
[INFO] tweaked toml for crates.io crate stakker 0.2.4 written to /workspace/builds/worker-87/source/Cargo.toml
[INFO] crate crates.io crate stakker 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a08e665a1aec7deabfc274117ad08f156943ef7af2b88e6e97cbc30fdaf265cd
[INFO] running `Command { std: "docker" "start" "-a" "a08e665a1aec7deabfc274117ad08f156943ef7af2b88e6e97cbc30fdaf265cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a08e665a1aec7deabfc274117ad08f156943ef7af2b88e6e97cbc30fdaf265cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a08e665a1aec7deabfc274117ad08f156943ef7af2b88e6e97cbc30fdaf265cd", kill_on_drop: false }`
[INFO] [stdout] a08e665a1aec7deabfc274117ad08f156943ef7af2b88e6e97cbc30fdaf265cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09912603b918dd62f5b52c76eb1765a54b83027b5630d984f9c3d0db87b568c0
[INFO] running `Command { std: "docker" "start" "-a" "09912603b918dd62f5b52c76eb1765a54b83027b5630d984f9c3d0db87b568c0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling anymap v0.12.1
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling qcell v0.4.1
[INFO] [stderr]    Compiling stakker v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "09912603b918dd62f5b52c76eb1765a54b83027b5630d984f9c3d0db87b568c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09912603b918dd62f5b52c76eb1765a54b83027b5630d984f9c3d0db87b568c0", kill_on_drop: false }`
[INFO] [stdout] 09912603b918dd62f5b52c76eb1765a54b83027b5630d984f9c3d0db87b568c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e82f34e013099c3b9ee93b40c5517ce642287dde86179a5b43bd6942391d218e
[INFO] running `Command { std: "docker" "start" "-a" "e82f34e013099c3b9ee93b40c5517ce642287dde86179a5b43bd6942391d218e", kill_on_drop: false }`
[INFO] [stderr]    Compiling stakker v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.85s
[INFO] running `Command { std: "docker" "inspect" "e82f34e013099c3b9ee93b40c5517ce642287dde86179a5b43bd6942391d218e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e82f34e013099c3b9ee93b40c5517ce642287dde86179a5b43bd6942391d218e", kill_on_drop: false }`
[INFO] [stdout] e82f34e013099c3b9ee93b40c5517ce642287dde86179a5b43bd6942391d218e