[INFO] fetching crate kani 0.0.0...
[INFO] testing kani-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate kani 0.0.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate kani 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 kani 0.0.0
[INFO] finished tweaking crates.io crate kani 0.0.0
[INFO] tweaked toml for crates.io crate kani 0.0.0 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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" "+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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] c3ee8a1edb8a641c035ae59e0f902bd5ce46764b9c73fe8aa6e499a3d0b6320d
[INFO] running `Command { std: "docker" "start" "-a" "c3ee8a1edb8a641c035ae59e0f902bd5ce46764b9c73fe8aa6e499a3d0b6320d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3ee8a1edb8a641c035ae59e0f902bd5ce46764b9c73fe8aa6e499a3d0b6320d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ee8a1edb8a641c035ae59e0f902bd5ce46764b9c73fe8aa6e499a3d0b6320d", kill_on_drop: false }`
[INFO] [stdout] c3ee8a1edb8a641c035ae59e0f902bd5ce46764b9c73fe8aa6e499a3d0b6320d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 79ee6d2d39779329820e61cb41333e133aed162743438ca5dd979923043c7c75
[INFO] running `Command { std: "docker" "start" "-a" "79ee6d2d39779329820e61cb41333e133aed162743438ca5dd979923043c7c75", kill_on_drop: false }`
[INFO] [stderr]    Compiling kani v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "79ee6d2d39779329820e61cb41333e133aed162743438ca5dd979923043c7c75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79ee6d2d39779329820e61cb41333e133aed162743438ca5dd979923043c7c75", kill_on_drop: false }`
[INFO] [stdout] 79ee6d2d39779329820e61cb41333e133aed162743438ca5dd979923043c7c75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] bfd99814ef1d39da5ae69a35567f6fed8b70dbb71474fae052e0e28ba2674fb9
[INFO] running `Command { std: "docker" "start" "-a" "bfd99814ef1d39da5ae69a35567f6fed8b70dbb71474fae052e0e28ba2674fb9", kill_on_drop: false }`
[INFO] [stderr]    Compiling kani v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "bfd99814ef1d39da5ae69a35567f6fed8b70dbb71474fae052e0e28ba2674fb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfd99814ef1d39da5ae69a35567f6fed8b70dbb71474fae052e0e28ba2674fb9", kill_on_drop: false }`
[INFO] [stdout] bfd99814ef1d39da5ae69a35567f6fed8b70dbb71474fae052e0e28ba2674fb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] e7e22839ecc0e6cc94b8711c9b551373b9809437e02ccc49574b6b4dbb2ef89d
[INFO] running `Command { std: "docker" "start" "-a" "e7e22839ecc0e6cc94b8711c9b551373b9809437e02ccc49574b6b4dbb2ef89d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kani-749da39301e0338d)
[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] [stderr]    Doc-tests kani
[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" "e7e22839ecc0e6cc94b8711c9b551373b9809437e02ccc49574b6b4dbb2ef89d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7e22839ecc0e6cc94b8711c9b551373b9809437e02ccc49574b6b4dbb2ef89d", kill_on_drop: false }`
[INFO] [stdout] e7e22839ecc0e6cc94b8711c9b551373b9809437e02ccc49574b6b4dbb2ef89d