[INFO] fetching crate tween 0.0.0...
[INFO] building tween-0.0.0 against master#461e8078010433ff7de2db2aaae8a3cfb0847215 for pr-94962
[INFO] extracting crate tween 0.0.0 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate tween 0.0.0 on toolchain 461e8078010433ff7de2db2aaae8a3cfb0847215
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tween 0.0.0
[INFO] finished tweaking crates.io crate tween 0.0.0
[INFO] tweaked toml for crates.io crate tween 0.0.0 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "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-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d64ca1353dcadff73b74df67cf3347619eb11d7f68ef52bed9d6d2dcb332bb8
[INFO] running `Command { std: "docker" "start" "-a" "5d64ca1353dcadff73b74df67cf3347619eb11d7f68ef52bed9d6d2dcb332bb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d64ca1353dcadff73b74df67cf3347619eb11d7f68ef52bed9d6d2dcb332bb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d64ca1353dcadff73b74df67cf3347619eb11d7f68ef52bed9d6d2dcb332bb8", kill_on_drop: false }`
[INFO] [stdout] 5d64ca1353dcadff73b74df67cf3347619eb11d7f68ef52bed9d6d2dcb332bb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78d461f6722a9b1281f92593feccb828ebae9b18e83cd3251fbaf7a81ba32c4a
[INFO] running `Command { std: "docker" "start" "-a" "78d461f6722a9b1281f92593feccb828ebae9b18e83cd3251fbaf7a81ba32c4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling tween v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "78d461f6722a9b1281f92593feccb828ebae9b18e83cd3251fbaf7a81ba32c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78d461f6722a9b1281f92593feccb828ebae9b18e83cd3251fbaf7a81ba32c4a", kill_on_drop: false }`
[INFO] [stdout] 78d461f6722a9b1281f92593feccb828ebae9b18e83cd3251fbaf7a81ba32c4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27e94c75672969112b5044934e755f1d77a5326adb619e5c964d7f19e2a3d568
[INFO] running `Command { std: "docker" "start" "-a" "27e94c75672969112b5044934e755f1d77a5326adb619e5c964d7f19e2a3d568", kill_on_drop: false }`
[INFO] [stderr]    Compiling tween v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/tween-193c5f3a1e84d813)
[INFO] running `Command { std: "docker" "inspect" "27e94c75672969112b5044934e755f1d77a5326adb619e5c964d7f19e2a3d568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27e94c75672969112b5044934e755f1d77a5326adb619e5c964d7f19e2a3d568", kill_on_drop: false }`
[INFO] [stdout] 27e94c75672969112b5044934e755f1d77a5326adb619e5c964d7f19e2a3d568