[INFO] fetching crate berk 0.1.0...
[INFO] testing berk-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate berk 0.1.0 into /workspace/builds/worker-54/source
[INFO] validating manifest of crates.io crate berk 0.1.0 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 berk 0.1.0
[INFO] finished tweaking crates.io crate berk 0.1.0
[INFO] tweaked toml for crates.io crate berk 0.1.0 written to /workspace/builds/worker-54/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] 0523ccd2f3ce2e59f91b0ece38869f7e0ff4b2d2cd118ef58b0d50a43442b550
[INFO] running `Command { std: "docker" "start" "-a" "0523ccd2f3ce2e59f91b0ece38869f7e0ff4b2d2cd118ef58b0d50a43442b550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0523ccd2f3ce2e59f91b0ece38869f7e0ff4b2d2cd118ef58b0d50a43442b550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0523ccd2f3ce2e59f91b0ece38869f7e0ff4b2d2cd118ef58b0d50a43442b550", kill_on_drop: false }`
[INFO] [stdout] 0523ccd2f3ce2e59f91b0ece38869f7e0ff4b2d2cd118ef58b0d50a43442b550
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] b01de967605572d20c092b63cb59917a9606167000b5157049b2665a7f1d35a8
[INFO] running `Command { std: "docker" "start" "-a" "b01de967605572d20c092b63cb59917a9606167000b5157049b2665a7f1d35a8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling berk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.63s
[INFO] running `Command { std: "docker" "inspect" "b01de967605572d20c092b63cb59917a9606167000b5157049b2665a7f1d35a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b01de967605572d20c092b63cb59917a9606167000b5157049b2665a7f1d35a8", kill_on_drop: false }`
[INFO] [stdout] b01de967605572d20c092b63cb59917a9606167000b5157049b2665a7f1d35a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] 4fb2a02e900558406aa047745795564a039432e51da1384a4bc2b40e81537d73
[INFO] running `Command { std: "docker" "start" "-a" "4fb2a02e900558406aa047745795564a039432e51da1384a4bc2b40e81537d73", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling berk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.27s
[INFO] running `Command { std: "docker" "inspect" "4fb2a02e900558406aa047745795564a039432e51da1384a4bc2b40e81537d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fb2a02e900558406aa047745795564a039432e51da1384a4bc2b40e81537d73", kill_on_drop: false }`
[INFO] [stdout] 4fb2a02e900558406aa047745795564a039432e51da1384a4bc2b40e81537d73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] fabecf9b8c86008f988a73eaf3c6cebfeea359bd9dca3e2044acd11261dd63eb
[INFO] running `Command { std: "docker" "start" "-a" "fabecf9b8c86008f988a73eaf3c6cebfeea359bd9dca3e2044acd11261dd63eb", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/berk-b1bf2cc07d09dc0a)
[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" "fabecf9b8c86008f988a73eaf3c6cebfeea359bd9dca3e2044acd11261dd63eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fabecf9b8c86008f988a73eaf3c6cebfeea359bd9dca3e2044acd11261dd63eb", kill_on_drop: false }`
[INFO] [stdout] fabecf9b8c86008f988a73eaf3c6cebfeea359bd9dca3e2044acd11261dd63eb