[INFO] fetching crate flint 2.2.0...
[INFO] testing flint-2.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate flint 2.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate flint 2.2.0 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 flint 2.2.0
[INFO] finished tweaking crates.io crate flint 2.2.0
[INFO] tweaked toml for crates.io crate flint 2.2.0 written to /workspace/builds/worker-0/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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 8afb586c443678810a8804eb410eb4aa69949ea742e597a70179558bb231d78f
[INFO] running `Command { std: "docker" "start" "-a" "8afb586c443678810a8804eb410eb4aa69949ea742e597a70179558bb231d78f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8afb586c443678810a8804eb410eb4aa69949ea742e597a70179558bb231d78f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8afb586c443678810a8804eb410eb4aa69949ea742e597a70179558bb231d78f", kill_on_drop: false }`
[INFO] [stdout] 8afb586c443678810a8804eb410eb4aa69949ea742e597a70179558bb231d78f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 96db60c54769438ccae72e629a57cbe12aa6dc3d7fe136c5acd5dc72bcdd16d3
[INFO] running `Command { std: "docker" "start" "-a" "96db60c54769438ccae72e629a57cbe12aa6dc3d7fe136c5acd5dc72bcdd16d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling globset v0.4.8
[INFO] [stderr]    Compiling addr2line v0.16.0
[INFO] [stderr]    Compiling ignore v0.4.18
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling sane v0.2.1
[INFO] [stderr]    Compiling flint v2.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.56s
[INFO] running `Command { std: "docker" "inspect" "96db60c54769438ccae72e629a57cbe12aa6dc3d7fe136c5acd5dc72bcdd16d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96db60c54769438ccae72e629a57cbe12aa6dc3d7fe136c5acd5dc72bcdd16d3", kill_on_drop: false }`
[INFO] [stdout] 96db60c54769438ccae72e629a57cbe12aa6dc3d7fe136c5acd5dc72bcdd16d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 27684dcf8eaf69b4ccdf38c1048dd104e6e85c5a0843ae433625e902566b23c0
[INFO] running `Command { std: "docker" "start" "-a" "27684dcf8eaf69b4ccdf38c1048dd104e6e85c5a0843ae433625e902566b23c0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling flint v2.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `Command { std: "docker" "inspect" "27684dcf8eaf69b4ccdf38c1048dd104e6e85c5a0843ae433625e902566b23c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27684dcf8eaf69b4ccdf38c1048dd104e6e85c5a0843ae433625e902566b23c0", kill_on_drop: false }`
[INFO] [stdout] 27684dcf8eaf69b4ccdf38c1048dd104e6e85c5a0843ae433625e902566b23c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 81e13c7c8375a4bdb35e52b13b6281ae1c474662fafe3a92d6697d5632fd65c6
[INFO] running `Command { std: "docker" "start" "-a" "81e13c7c8375a4bdb35e52b13b6281ae1c474662fafe3a92d6697d5632fd65c6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flint-211b6cf9137d52d8)
[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" "81e13c7c8375a4bdb35e52b13b6281ae1c474662fafe3a92d6697d5632fd65c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81e13c7c8375a4bdb35e52b13b6281ae1c474662fafe3a92d6697d5632fd65c6", kill_on_drop: false }`
[INFO] [stdout] 81e13c7c8375a4bdb35e52b13b6281ae1c474662fafe3a92d6697d5632fd65c6