[INFO] fetching crate kct_helper 0.3.1...
[INFO] testing kct_helper-0.3.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate kct_helper 0.3.1 into /workspace/builds/worker-25/source
[INFO] validating manifest of crates.io crate kct_helper 0.3.1 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 kct_helper 0.3.1
[INFO] finished tweaking crates.io crate kct_helper 0.3.1
[INFO] tweaked toml for crates.io crate kct_helper 0.3.1 written to /workspace/builds/worker-25/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-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] 295058db6e2930b0342d6cdfe9970e56ccf121551e6526f6bf6e9fdd42f5d3c0
[INFO] running `Command { std: "docker" "start" "-a" "295058db6e2930b0342d6cdfe9970e56ccf121551e6526f6bf6e9fdd42f5d3c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "295058db6e2930b0342d6cdfe9970e56ccf121551e6526f6bf6e9fdd42f5d3c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "295058db6e2930b0342d6cdfe9970e56ccf121551e6526f6bf6e9fdd42f5d3c0", kill_on_drop: false }`
[INFO] [stdout] 295058db6e2930b0342d6cdfe9970e56ccf121551e6526f6bf6e9fdd42f5d3c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] 0b94b8a262eb3d0418df32be1dda01b9ac7662405fc5f70fd1e71ccbb50489dc
[INFO] running `Command { std: "docker" "start" "-a" "0b94b8a262eb3d0418df32be1dda01b9ac7662405fc5f70fd1e71ccbb50489dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling kct_helper v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.42s
[INFO] running `Command { std: "docker" "inspect" "0b94b8a262eb3d0418df32be1dda01b9ac7662405fc5f70fd1e71ccbb50489dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b94b8a262eb3d0418df32be1dda01b9ac7662405fc5f70fd1e71ccbb50489dc", kill_on_drop: false }`
[INFO] [stdout] 0b94b8a262eb3d0418df32be1dda01b9ac7662405fc5f70fd1e71ccbb50489dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] 5fb946b4237fdef6b210c76bd4cf5a1f9c912beaa0f4eb28d178952e572371cf
[INFO] running `Command { std: "docker" "start" "-a" "5fb946b4237fdef6b210c76bd4cf5a1f9c912beaa0f4eb28d178952e572371cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling kct_helper v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "5fb946b4237fdef6b210c76bd4cf5a1f9c912beaa0f4eb28d178952e572371cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fb946b4237fdef6b210c76bd4cf5a1f9c912beaa0f4eb28d178952e572371cf", kill_on_drop: false }`
[INFO] [stdout] 5fb946b4237fdef6b210c76bd4cf5a1f9c912beaa0f4eb28d178952e572371cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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] 82c5933258799cdbc43cfd0948b2f5b6ca452980ac55fe0ee84cd54ed644a901
[INFO] running `Command { std: "docker" "start" "-a" "82c5933258799cdbc43cfd0948b2f5b6ca452980ac55fe0ee84cd54ed644a901", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.28s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/kct_helper-7b2be2be873958ee)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kct_helper
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "82c5933258799cdbc43cfd0948b2f5b6ca452980ac55fe0ee84cd54ed644a901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82c5933258799cdbc43cfd0948b2f5b6ca452980ac55fe0ee84cd54ed644a901", kill_on_drop: false }`
[INFO] [stdout] 82c5933258799cdbc43cfd0948b2f5b6ca452980ac55fe0ee84cd54ed644a901