[INFO] fetching crate sentaku 0.4.0...
[INFO] testing sentaku-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate sentaku 0.4.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate sentaku 0.4.0 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 crates.io crate sentaku 0.4.0
[INFO] finished tweaking crates.io crate sentaku 0.4.0
[INFO] tweaked toml for crates.io crate sentaku 0.4.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate sentaku 0.4.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 5320cc3035c484ed3913e368fdd185b87dcf222c001abd3f6f930069a53c1b4e
[INFO] running `Command { std: "docker" "start" "-a" "5320cc3035c484ed3913e368fdd185b87dcf222c001abd3f6f930069a53c1b4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5320cc3035c484ed3913e368fdd185b87dcf222c001abd3f6f930069a53c1b4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5320cc3035c484ed3913e368fdd185b87dcf222c001abd3f6f930069a53c1b4e", kill_on_drop: false }`
[INFO] [stdout] 5320cc3035c484ed3913e368fdd185b87dcf222c001abd3f6f930069a53c1b4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 099f1742d0c6ed642aa049543cb8d26bd594e647aebd4e06f2fdddf7f3338de5
[INFO] running `Command { std: "docker" "start" "-a" "099f1742d0c6ed642aa049543cb8d26bd594e647aebd4e06f2fdddf7f3338de5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling termion v1.5.5
[INFO] [stderr]    Compiling sentaku v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "099f1742d0c6ed642aa049543cb8d26bd594e647aebd4e06f2fdddf7f3338de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "099f1742d0c6ed642aa049543cb8d26bd594e647aebd4e06f2fdddf7f3338de5", kill_on_drop: false }`
[INFO] [stdout] 099f1742d0c6ed642aa049543cb8d26bd594e647aebd4e06f2fdddf7f3338de5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 28d3b1150dd2ef6972164a55ae8f01355363884d1305353c7d43f4ca351146ad
[INFO] running `Command { std: "docker" "start" "-a" "28d3b1150dd2ef6972164a55ae8f01355363884d1305353c7d43f4ca351146ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling webbrowser v0.5.2
[INFO] [stderr]    Compiling sentaku v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `Command { std: "docker" "inspect" "28d3b1150dd2ef6972164a55ae8f01355363884d1305353c7d43f4ca351146ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28d3b1150dd2ef6972164a55ae8f01355363884d1305353c7d43f4ca351146ad", kill_on_drop: false }`
[INFO] [stdout] 28d3b1150dd2ef6972164a55ae8f01355363884d1305353c7d43f4ca351146ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] e21fb6a53147b69c3b5e7b798d308c7dca91f45ce4f5cbfbfada365140768b6a
[INFO] running `Command { std: "docker" "start" "-a" "e21fb6a53147b69c3b5e7b798d308c7dca91f45ce4f5cbfbfada365140768b6a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.36s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sentaku-4ac30f7b6257c26c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[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 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sentaku
[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" "e21fb6a53147b69c3b5e7b798d308c7dca91f45ce4f5cbfbfada365140768b6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e21fb6a53147b69c3b5e7b798d308c7dca91f45ce4f5cbfbfada365140768b6a", kill_on_drop: false }`
[INFO] [stdout] e21fb6a53147b69c3b5e7b798d308c7dca91f45ce4f5cbfbfada365140768b6a