[INFO] fetching crate flacon 0.0.1...
[INFO] testing flacon-0.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate flacon 0.0.1 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate flacon 0.0.1 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 flacon 0.0.1
[INFO] finished tweaking crates.io crate flacon 0.0.1
[INFO] tweaked toml for crates.io crate flacon 0.0.1 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate crates.io crate flacon 0.0.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] e1f827967f8b1e96210228ff6445cf6f71735122cddd658434432378373b6768
[INFO] running `Command { std: "docker" "start" "-a" "e1f827967f8b1e96210228ff6445cf6f71735122cddd658434432378373b6768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1f827967f8b1e96210228ff6445cf6f71735122cddd658434432378373b6768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1f827967f8b1e96210228ff6445cf6f71735122cddd658434432378373b6768", kill_on_drop: false }`
[INFO] [stdout] e1f827967f8b1e96210228ff6445cf6f71735122cddd658434432378373b6768
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] 457e44ccf71336f488a6d324974252d4be222420bd80b300bbd0bd93b2b37739
[INFO] running `Command { std: "docker" "start" "-a" "457e44ccf71336f488a6d324974252d4be222420bd80b300bbd0bd93b2b37739", kill_on_drop: false }`
[INFO] [stderr]    Compiling flacon v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "457e44ccf71336f488a6d324974252d4be222420bd80b300bbd0bd93b2b37739", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "457e44ccf71336f488a6d324974252d4be222420bd80b300bbd0bd93b2b37739", kill_on_drop: false }`
[INFO] [stdout] 457e44ccf71336f488a6d324974252d4be222420bd80b300bbd0bd93b2b37739
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] d8cc6884dcec59f0f03e4bab9e66ffe0cd4fbb2ec8ff66dc49392d82fb95e969
[INFO] running `Command { std: "docker" "start" "-a" "d8cc6884dcec59f0f03e4bab9e66ffe0cd4fbb2ec8ff66dc49392d82fb95e969", kill_on_drop: false }`
[INFO] [stderr]    Compiling flacon v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "d8cc6884dcec59f0f03e4bab9e66ffe0cd4fbb2ec8ff66dc49392d82fb95e969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8cc6884dcec59f0f03e4bab9e66ffe0cd4fbb2ec8ff66dc49392d82fb95e969", kill_on_drop: false }`
[INFO] [stdout] d8cc6884dcec59f0f03e4bab9e66ffe0cd4fbb2ec8ff66dc49392d82fb95e969
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] 6768e5f43c179681d5e8978d318ae63c7cfe5f3b2094ec5bf39420c698db1abf
[INFO] running `Command { std: "docker" "start" "-a" "6768e5f43c179681d5e8978d318ae63c7cfe5f3b2094ec5bf39420c698db1abf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flacon-69b04184180ae176)
[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" "6768e5f43c179681d5e8978d318ae63c7cfe5f3b2094ec5bf39420c698db1abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6768e5f43c179681d5e8978d318ae63c7cfe5f3b2094ec5bf39420c698db1abf", kill_on_drop: false }`
[INFO] [stdout] 6768e5f43c179681d5e8978d318ae63c7cfe5f3b2094ec5bf39420c698db1abf