[INFO] fetching crate history-buffer 0.1.0...
[INFO] testing history-buffer-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate history-buffer 0.1.0 into /workspace/builds/worker-71/source
[INFO] validating manifest of crates.io crate history-buffer 0.1.0 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 history-buffer 0.1.0
[INFO] finished tweaking crates.io crate history-buffer 0.1.0
[INFO] tweaked toml for crates.io crate history-buffer 0.1.0 written to /workspace/builds/worker-71/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-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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] e412b099417984422297041477afc7020f0771c2162e387021c550a8cf9a11df
[INFO] running `Command { std: "docker" "start" "-a" "e412b099417984422297041477afc7020f0771c2162e387021c550a8cf9a11df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e412b099417984422297041477afc7020f0771c2162e387021c550a8cf9a11df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e412b099417984422297041477afc7020f0771c2162e387021c550a8cf9a11df", kill_on_drop: false }`
[INFO] [stdout] e412b099417984422297041477afc7020f0771c2162e387021c550a8cf9a11df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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] 44d9916d5022368c8d04b217bdacc57b8cfbd09021ddc8c6c6608c76fcc3e1e9
[INFO] running `Command { std: "docker" "start" "-a" "44d9916d5022368c8d04b217bdacc57b8cfbd09021ddc8c6c6608c76fcc3e1e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling history-buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "44d9916d5022368c8d04b217bdacc57b8cfbd09021ddc8c6c6608c76fcc3e1e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44d9916d5022368c8d04b217bdacc57b8cfbd09021ddc8c6c6608c76fcc3e1e9", kill_on_drop: false }`
[INFO] [stdout] 44d9916d5022368c8d04b217bdacc57b8cfbd09021ddc8c6c6608c76fcc3e1e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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] eee0fe7ee5a4e0056f86a62ce3d3c8ed38acf430c3bb841575a584782da48b0f
[INFO] running `Command { std: "docker" "start" "-a" "eee0fe7ee5a4e0056f86a62ce3d3c8ed38acf430c3bb841575a584782da48b0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling history-buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "eee0fe7ee5a4e0056f86a62ce3d3c8ed38acf430c3bb841575a584782da48b0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eee0fe7ee5a4e0056f86a62ce3d3c8ed38acf430c3bb841575a584782da48b0f", kill_on_drop: false }`
[INFO] [stdout] eee0fe7ee5a4e0056f86a62ce3d3c8ed38acf430c3bb841575a584782da48b0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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] c4852350fa421a0125e066a5d64fdb2088340a6c682b0e91c877a49cae6ddc53
[INFO] running `Command { std: "docker" "start" "-a" "c4852350fa421a0125e066a5d64fdb2088340a6c682b0e91c877a49cae6ddc53", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/history_buffer-d8f0146120977ebf)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests history-buffer
[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] [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" "c4852350fa421a0125e066a5d64fdb2088340a6c682b0e91c877a49cae6ddc53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4852350fa421a0125e066a5d64fdb2088340a6c682b0e91c877a49cae6ddc53", kill_on_drop: false }`
[INFO] [stdout] c4852350fa421a0125e066a5d64fdb2088340a6c682b0e91c877a49cae6ddc53