[INFO] cloning repository https://github.com/ProgrammingRust/fingertips
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ProgrammingRust/fingertips" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FProgrammingRust%2Ffingertips", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FProgrammingRust%2Ffingertips'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1bd7691d4721c44293d6451c393a39ea38a71ac9
[INFO] testing ProgrammingRust/fingertips against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FProgrammingRust%2Ffingertips" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ProgrammingRust/fingertips on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ProgrammingRust/fingertips
[INFO] finished tweaking git repo https://github.com/ProgrammingRust/fingertips
[INFO] tweaked toml for git repo https://github.com/ProgrammingRust/fingertips written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/ProgrammingRust/fingertips already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d2916524f866c4c1cdce0a93ad5df4759692f44da4ce4f20cf16a334298eab8
[INFO] running `Command { std: "docker" "start" "-a" "8d2916524f866c4c1cdce0a93ad5df4759692f44da4ce4f20cf16a334298eab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d2916524f866c4c1cdce0a93ad5df4759692f44da4ce4f20cf16a334298eab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d2916524f866c4c1cdce0a93ad5df4759692f44da4ce4f20cf16a334298eab8", kill_on_drop: false }`
[INFO] [stdout] 8d2916524f866c4c1cdce0a93ad5df4759692f44da4ce4f20cf16a334298eab8
[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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8caf06bd0a8cb824ff5cfe7b260c733b90c9526801ae7b96d4010fecccf63b3
[INFO] running `Command { std: "docker" "start" "-a" "b8caf06bd0a8cb824ff5cfe7b260c733b90c9526801ae7b96d4010fecccf63b3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling argparse v0.2.1
[INFO] [stderr]    Compiling fingertips v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.53s
[INFO] running `Command { std: "docker" "inspect" "b8caf06bd0a8cb824ff5cfe7b260c733b90c9526801ae7b96d4010fecccf63b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8caf06bd0a8cb824ff5cfe7b260c733b90c9526801ae7b96d4010fecccf63b3", kill_on_drop: false }`
[INFO] [stdout] b8caf06bd0a8cb824ff5cfe7b260c733b90c9526801ae7b96d4010fecccf63b3
[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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0383f3f2ad45f76b70d31f3c9f0f4fb6b6587544319356cf4dc972432b3484dd
[INFO] running `Command { std: "docker" "start" "-a" "0383f3f2ad45f76b70d31f3c9f0f4fb6b6587544319356cf4dc972432b3484dd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fingertips v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 12.85s
[INFO] running `Command { std: "docker" "inspect" "0383f3f2ad45f76b70d31f3c9f0f4fb6b6587544319356cf4dc972432b3484dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0383f3f2ad45f76b70d31f3c9f0f4fb6b6587544319356cf4dc972432b3484dd", kill_on_drop: false }`
[INFO] [stdout] 0383f3f2ad45f76b70d31f3c9f0f4fb6b6587544319356cf4dc972432b3484dd
[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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2177c9fe55a5a6d92598170708fb842afd6fdf2f95cb605deeb0ab8cdff8048c
[INFO] running `Command { std: "docker" "start" "-a" "2177c9fe55a5a6d92598170708fb842afd6fdf2f95cb605deeb0ab8cdff8048c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2m 56s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fingertips-d0ffe2a9bf1bfa21)
[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" "2177c9fe55a5a6d92598170708fb842afd6fdf2f95cb605deeb0ab8cdff8048c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2177c9fe55a5a6d92598170708fb842afd6fdf2f95cb605deeb0ab8cdff8048c", kill_on_drop: false }`
[INFO] [stdout] 2177c9fe55a5a6d92598170708fb842afd6fdf2f95cb605deeb0ab8cdff8048c