[INFO] fetching crate polar 0.0.0...
[INFO] testing polar-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate polar 0.0.0 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate polar 0.0.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polar 0.0.0
[INFO] finished tweaking crates.io crate polar 0.0.0
[INFO] tweaked toml for crates.io crate polar 0.0.0 written to /workspace/builds/worker-74/source/Cargo.toml
[INFO] crate crates.io crate polar 0.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 153f5713684baf1ffcbcc5a4f7077218b221eb835dfd33c9e5a03d8cfc00fbdb
[INFO] running `Command { std: "docker" "start" "-a" "153f5713684baf1ffcbcc5a4f7077218b221eb835dfd33c9e5a03d8cfc00fbdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "153f5713684baf1ffcbcc5a4f7077218b221eb835dfd33c9e5a03d8cfc00fbdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "153f5713684baf1ffcbcc5a4f7077218b221eb835dfd33c9e5a03d8cfc00fbdb", kill_on_drop: false }`
[INFO] [stdout] 153f5713684baf1ffcbcc5a4f7077218b221eb835dfd33c9e5a03d8cfc00fbdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91517cc62421fa31ebef409340ea665083a0a9a6736395cf230650a8e9d6eea7
[INFO] running `Command { std: "docker" "start" "-a" "91517cc62421fa31ebef409340ea665083a0a9a6736395cf230650a8e9d6eea7", kill_on_drop: false }`
[INFO] [stderr]    Compiling polar v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "91517cc62421fa31ebef409340ea665083a0a9a6736395cf230650a8e9d6eea7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91517cc62421fa31ebef409340ea665083a0a9a6736395cf230650a8e9d6eea7", kill_on_drop: false }`
[INFO] [stdout] 91517cc62421fa31ebef409340ea665083a0a9a6736395cf230650a8e9d6eea7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87d01245ce01b042e1603322872fb42d266a18c4f0c92a0582af29249e65a655
[INFO] running `Command { std: "docker" "start" "-a" "87d01245ce01b042e1603322872fb42d266a18c4f0c92a0582af29249e65a655", kill_on_drop: false }`
[INFO] [stderr]    Compiling polar v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "87d01245ce01b042e1603322872fb42d266a18c4f0c92a0582af29249e65a655", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87d01245ce01b042e1603322872fb42d266a18c4f0c92a0582af29249e65a655", kill_on_drop: false }`
[INFO] [stdout] 87d01245ce01b042e1603322872fb42d266a18c4f0c92a0582af29249e65a655
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b556233caafd6737e099e38040e051ee5945314e1084b9f4deb7df467ff06ff0
[INFO] running `Command { std: "docker" "start" "-a" "b556233caafd6737e099e38040e051ee5945314e1084b9f4deb7df467ff06ff0", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/polar-fea5667d6209b86b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b556233caafd6737e099e38040e051ee5945314e1084b9f4deb7df467ff06ff0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b556233caafd6737e099e38040e051ee5945314e1084b9f4deb7df467ff06ff0", kill_on_drop: false }`
[INFO] [stdout] b556233caafd6737e099e38040e051ee5945314e1084b9f4deb7df467ff06ff0