[INFO] fetching crate copper 0.1.0...
[INFO] testing copper-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate copper 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate copper 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 copper 0.1.0
[INFO] finished tweaking crates.io crate copper 0.1.0
[INFO] tweaked toml for crates.io crate copper 0.1.0 written to /workspace/builds/worker-7/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 7d01005461249e36c216fa317113e6a073d4ca2d8f45146f1f6db2095c8fa045
[INFO] running `Command { std: "docker" "start" "-a" "7d01005461249e36c216fa317113e6a073d4ca2d8f45146f1f6db2095c8fa045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d01005461249e36c216fa317113e6a073d4ca2d8f45146f1f6db2095c8fa045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d01005461249e36c216fa317113e6a073d4ca2d8f45146f1f6db2095c8fa045", kill_on_drop: false }`
[INFO] [stdout] 7d01005461249e36c216fa317113e6a073d4ca2d8f45146f1f6db2095c8fa045
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 3538f2f4a86d728ee42306887f61090aa8327324e68d7ba9b01a44a7ca2356f1
[INFO] running `Command { std: "docker" "start" "-a" "3538f2f4a86d728ee42306887f61090aa8327324e68d7ba9b01a44a7ca2356f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling copper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "3538f2f4a86d728ee42306887f61090aa8327324e68d7ba9b01a44a7ca2356f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3538f2f4a86d728ee42306887f61090aa8327324e68d7ba9b01a44a7ca2356f1", kill_on_drop: false }`
[INFO] [stdout] 3538f2f4a86d728ee42306887f61090aa8327324e68d7ba9b01a44a7ca2356f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 9a74bdb6e070f85e8e946530003141fc9b296b772afdab7f9ece5e852093fa1f
[INFO] running `Command { std: "docker" "start" "-a" "9a74bdb6e070f85e8e946530003141fc9b296b772afdab7f9ece5e852093fa1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling copper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "9a74bdb6e070f85e8e946530003141fc9b296b772afdab7f9ece5e852093fa1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a74bdb6e070f85e8e946530003141fc9b296b772afdab7f9ece5e852093fa1f", kill_on_drop: false }`
[INFO] [stdout] 9a74bdb6e070f85e8e946530003141fc9b296b772afdab7f9ece5e852093fa1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] d89ea18f732d3bcdf13dfa2dfd36c5614a4b94cbd1f477005ef7392a7f11cf80
[INFO] running `Command { std: "docker" "start" "-a" "d89ea18f732d3bcdf13dfa2dfd36c5614a4b94cbd1f477005ef7392a7f11cf80", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/copper-f76be4e04ef9c9e9)
[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 copper
[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" "d89ea18f732d3bcdf13dfa2dfd36c5614a4b94cbd1f477005ef7392a7f11cf80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d89ea18f732d3bcdf13dfa2dfd36c5614a4b94cbd1f477005ef7392a7f11cf80", kill_on_drop: false }`
[INFO] [stdout] d89ea18f732d3bcdf13dfa2dfd36c5614a4b94cbd1f477005ef7392a7f11cf80