[INFO] fetching crate rose_tree 0.3.0...
[INFO] testing rose_tree-0.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate rose_tree 0.3.0 into /workspace/builds/worker-106/source
[INFO] validating manifest of crates.io crate rose_tree 0.3.0 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 rose_tree 0.3.0
[INFO] finished tweaking crates.io crate rose_tree 0.3.0
[INFO] tweaked toml for crates.io crate rose_tree 0.3.0 written to /workspace/builds/worker-106/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] [stderr]     Blocking waiting for file lock on package cache
[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-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] 442f8b8c7ef0e9225d31fc0cc28fdf5aedb1803140d6de6a3997917771841dd1
[INFO] running `Command { std: "docker" "start" "-a" "442f8b8c7ef0e9225d31fc0cc28fdf5aedb1803140d6de6a3997917771841dd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "442f8b8c7ef0e9225d31fc0cc28fdf5aedb1803140d6de6a3997917771841dd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "442f8b8c7ef0e9225d31fc0cc28fdf5aedb1803140d6de6a3997917771841dd1", kill_on_drop: false }`
[INFO] [stdout] 442f8b8c7ef0e9225d31fc0cc28fdf5aedb1803140d6de6a3997917771841dd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] 7ef1bd16840d200e4e6400149ef65d038087f73bf945f8fab4594f1b22cb728e
[INFO] running `Command { std: "docker" "start" "-a" "7ef1bd16840d200e4e6400149ef65d038087f73bf945f8fab4594f1b22cb728e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling fixedbitset v0.4.0
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling petgraph v0.6.0
[INFO] [stderr]    Compiling rose_tree v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.24s
[INFO] running `Command { std: "docker" "inspect" "7ef1bd16840d200e4e6400149ef65d038087f73bf945f8fab4594f1b22cb728e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ef1bd16840d200e4e6400149ef65d038087f73bf945f8fab4594f1b22cb728e", kill_on_drop: false }`
[INFO] [stdout] 7ef1bd16840d200e4e6400149ef65d038087f73bf945f8fab4594f1b22cb728e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] bfdb4f16144feefc46f19453d874b4d8dca6ae625947bc44cb2e5bbf17f9f3c7
[INFO] running `Command { std: "docker" "start" "-a" "bfdb4f16144feefc46f19453d874b4d8dca6ae625947bc44cb2e5bbf17f9f3c7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rose_tree v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "bfdb4f16144feefc46f19453d874b4d8dca6ae625947bc44cb2e5bbf17f9f3c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfdb4f16144feefc46f19453d874b4d8dca6ae625947bc44cb2e5bbf17f9f3c7", kill_on_drop: false }`
[INFO] [stdout] bfdb4f16144feefc46f19453d874b4d8dca6ae625947bc44cb2e5bbf17f9f3c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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] 5829b29f2b079e9e9464689d11aae8a1b67209aac9d440c57f777ae0aa3eb885
[INFO] running `Command { std: "docker" "start" "-a" "5829b29f2b079e9e9464689d11aae8a1b67209aac9d440c57f777ae0aa3eb885", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rose_tree-9b442e7c090a454a)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/iterators.rs (/opt/rustwide/target/debug/deps/iterators-35e17e499575e93e)
[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] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test children ... ok
[INFO] [stdout] test parent_recursion ... ok
[INFO] [stdout] test siblings ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/remove.rs (/opt/rustwide/target/debug/deps/remove-7a1888fddb455143)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test remove_node ... 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]      Running tests/walkers.rs (/opt/rustwide/target/debug/deps/walkers-f0bb41d01fb10062)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]    Doc-tests rose_tree
[INFO] [stdout] test walk_children ... ok
[INFO] [stdout] test walk_siblings ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "5829b29f2b079e9e9464689d11aae8a1b67209aac9d440c57f777ae0aa3eb885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5829b29f2b079e9e9464689d11aae8a1b67209aac9d440c57f777ae0aa3eb885", kill_on_drop: false }`
[INFO] [stdout] 5829b29f2b079e9e9464689d11aae8a1b67209aac9d440c57f777ae0aa3eb885