[INFO] fetching crate option 0.0.0...
[INFO] testing option-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate option 0.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate option 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 option 0.0.0
[INFO] finished tweaking crates.io crate option 0.0.0
[INFO] tweaked toml for crates.io crate option 0.0.0 written to /workspace/builds/worker-8/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 9b99adf962d5b9e4a9f4f3e230abbc166aaf15642ba10f343e10a703d07b6e46
[INFO] running `Command { std: "docker" "start" "-a" "9b99adf962d5b9e4a9f4f3e230abbc166aaf15642ba10f343e10a703d07b6e46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b99adf962d5b9e4a9f4f3e230abbc166aaf15642ba10f343e10a703d07b6e46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b99adf962d5b9e4a9f4f3e230abbc166aaf15642ba10f343e10a703d07b6e46", kill_on_drop: false }`
[INFO] [stdout] 9b99adf962d5b9e4a9f4f3e230abbc166aaf15642ba10f343e10a703d07b6e46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] b5a0af71b19db728382174363ab8eb1b3426d452e3435cefc3d54a58d3eb5f08
[INFO] running `Command { std: "docker" "start" "-a" "b5a0af71b19db728382174363ab8eb1b3426d452e3435cefc3d54a58d3eb5f08", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling option v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "b5a0af71b19db728382174363ab8eb1b3426d452e3435cefc3d54a58d3eb5f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5a0af71b19db728382174363ab8eb1b3426d452e3435cefc3d54a58d3eb5f08", kill_on_drop: false }`
[INFO] [stdout] b5a0af71b19db728382174363ab8eb1b3426d452e3435cefc3d54a58d3eb5f08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 4a7fa38e076c7c1b721132ccda8581d7f95f1f8f5d8a353a46320ec37d44a7bb
[INFO] running `Command { std: "docker" "start" "-a" "4a7fa38e076c7c1b721132ccda8581d7f95f1f8f5d8a353a46320ec37d44a7bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling option v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "4a7fa38e076c7c1b721132ccda8581d7f95f1f8f5d8a353a46320ec37d44a7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a7fa38e076c7c1b721132ccda8581d7f95f1f8f5d8a353a46320ec37d44a7bb", kill_on_drop: false }`
[INFO] [stdout] 4a7fa38e076c7c1b721132ccda8581d7f95f1f8f5d8a353a46320ec37d44a7bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] a2b8eb97f377421a296e246d69344ac94a2d5e1f8e740fd4516f965fe26c8c9c
[INFO] running `Command { std: "docker" "start" "-a" "a2b8eb97f377421a296e246d69344ac94a2d5e1f8e740fd4516f965fe26c8c9c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/option-1ad46f590b43ef7d)
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests option
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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" "a2b8eb97f377421a296e246d69344ac94a2d5e1f8e740fd4516f965fe26c8c9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2b8eb97f377421a296e246d69344ac94a2d5e1f8e740fd4516f965fe26c8c9c", kill_on_drop: false }`
[INFO] [stdout] a2b8eb97f377421a296e246d69344ac94a2d5e1f8e740fd4516f965fe26c8c9c