[INFO] fetching crate unfold 0.2.0...
[INFO] testing unfold-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate unfold 0.2.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate unfold 0.2.0 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 unfold 0.2.0
[INFO] finished tweaking crates.io crate unfold 0.2.0
[INFO] tweaked toml for crates.io crate unfold 0.2.0 written to /workspace/builds/worker-14/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 2ee621250ec993b333e1d3225cddad17adb1e6756c60a0e2a048c090a6b7804d
[INFO] running `Command { std: "docker" "start" "-a" "2ee621250ec993b333e1d3225cddad17adb1e6756c60a0e2a048c090a6b7804d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ee621250ec993b333e1d3225cddad17adb1e6756c60a0e2a048c090a6b7804d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ee621250ec993b333e1d3225cddad17adb1e6756c60a0e2a048c090a6b7804d", kill_on_drop: false }`
[INFO] [stdout] 2ee621250ec993b333e1d3225cddad17adb1e6756c60a0e2a048c090a6b7804d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] c701b9dafab992cf66e1c134719c9aa6d5b6ca1d1ee356780d8829b8f2170ec7
[INFO] running `Command { std: "docker" "start" "-a" "c701b9dafab992cf66e1c134719c9aa6d5b6ca1d1ee356780d8829b8f2170ec7", kill_on_drop: false }`
[INFO] [stderr]    Compiling unfold v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "c701b9dafab992cf66e1c134719c9aa6d5b6ca1d1ee356780d8829b8f2170ec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c701b9dafab992cf66e1c134719c9aa6d5b6ca1d1ee356780d8829b8f2170ec7", kill_on_drop: false }`
[INFO] [stdout] c701b9dafab992cf66e1c134719c9aa6d5b6ca1d1ee356780d8829b8f2170ec7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 17628a6dd3efb273ef8bf61ea31118fb7f1c2f5e371e19ba5d96d29d07d14c7a
[INFO] running `Command { std: "docker" "start" "-a" "17628a6dd3efb273ef8bf61ea31118fb7f1c2f5e371e19ba5d96d29d07d14c7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling unfold v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "17628a6dd3efb273ef8bf61ea31118fb7f1c2f5e371e19ba5d96d29d07d14c7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17628a6dd3efb273ef8bf61ea31118fb7f1c2f5e371e19ba5d96d29d07d14c7a", kill_on_drop: false }`
[INFO] [stdout] 17628a6dd3efb273ef8bf61ea31118fb7f1c2f5e371e19ba5d96d29d07d14c7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 4975c838c8ebebc15f0032a0253af8225613c59c7343c267c3acf0158cf57ab6
[INFO] running `Command { std: "docker" "start" "-a" "4975c838c8ebebc15f0032a0253af8225613c59c7343c267c3acf0158cf57ab6", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/unfold-a67e60a14e078bd5)
[INFO] [stdout] test tests::test_fibonacci ... ok
[INFO] [stdout] test tests::test_unfold_vector ... ok
[INFO] [stderr]    Doc-tests unfold
[INFO] [stdout] test tests::test_unfold_count ... ok
[INFO] [stdout] test tests::test_unfold_nth ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - unfold_count (line 90) ... ok
[INFO] [stdout] test src/lib.rs - Unfold<T, F>::new (line 125) ... ok
[INFO] [stdout] test src/lib.rs - unfold_nth (line 72) ... ok
[INFO] [stdout] test src/lib.rs - unfold_vector (line 53) ... ok
[INFO] [stdout] test src/lib.rs - (line 24) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.18s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4975c838c8ebebc15f0032a0253af8225613c59c7343c267c3acf0158cf57ab6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4975c838c8ebebc15f0032a0253af8225613c59c7343c267c3acf0158cf57ab6", kill_on_drop: false }`
[INFO] [stdout] 4975c838c8ebebc15f0032a0253af8225613c59c7343c267c3acf0158cf57ab6