[INFO] fetching crate tagged-tree 0.4.0...
[INFO] testing tagged-tree-0.4.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate tagged-tree 0.4.0 into /workspace/builds/worker-25/source
[INFO] validating manifest of crates.io crate tagged-tree 0.4.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tagged-tree 0.4.0
[INFO] finished tweaking crates.io crate tagged-tree 0.4.0
[INFO] tweaked toml for crates.io crate tagged-tree 0.4.0 written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ed5735b5b352f3aab9e3015c5f78e9919341f83d9c11520fbae06eb2ed691b7
[INFO] running `Command { std: "docker" "start" "-a" "2ed5735b5b352f3aab9e3015c5f78e9919341f83d9c11520fbae06eb2ed691b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ed5735b5b352f3aab9e3015c5f78e9919341f83d9c11520fbae06eb2ed691b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ed5735b5b352f3aab9e3015c5f78e9919341f83d9c11520fbae06eb2ed691b7", kill_on_drop: false }`
[INFO] [stdout] 2ed5735b5b352f3aab9e3015c5f78e9919341f83d9c11520fbae06eb2ed691b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 749e15ddef3147ab98eceba46433628f6a48a6d838ae2c998bbd4ed368072adc
[INFO] running `Command { std: "docker" "start" "-a" "749e15ddef3147ab98eceba46433628f6a48a6d838ae2c998bbd4ed368072adc", kill_on_drop: false }`
[INFO] [stderr]    Compiling tagged-tree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "749e15ddef3147ab98eceba46433628f6a48a6d838ae2c998bbd4ed368072adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "749e15ddef3147ab98eceba46433628f6a48a6d838ae2c998bbd4ed368072adc", kill_on_drop: false }`
[INFO] [stdout] 749e15ddef3147ab98eceba46433628f6a48a6d838ae2c998bbd4ed368072adc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ce241a3457cd6f4e02b8b6f872536c5b55452bb59dbd49b077e082b64d8fe3d
[INFO] running `Command { std: "docker" "start" "-a" "5ce241a3457cd6f4e02b8b6f872536c5b55452bb59dbd49b077e082b64d8fe3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling predicates-core v1.0.3
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling termtree v0.2.4
[INFO] [stderr]    Compiling downcast v0.10.0
[INFO] [stderr]    Compiling fragile v1.1.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling mockall_derive v0.10.2
[INFO] [stderr]    Compiling predicates-tree v1.0.5
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling duplicate v0.3.0
[INFO] [stderr]    Compiling mockall v0.10.2
[INFO] [stderr]    Compiling tagged-tree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.23s
[INFO] running `Command { std: "docker" "inspect" "5ce241a3457cd6f4e02b8b6f872536c5b55452bb59dbd49b077e082b64d8fe3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ce241a3457cd6f4e02b8b6f872536c5b55452bb59dbd49b077e082b64d8fe3d", kill_on_drop: false }`
[INFO] [stdout] 5ce241a3457cd6f4e02b8b6f872536c5b55452bb59dbd49b077e082b64d8fe3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f552ffec6732d36f7151b8a1167d7bd405454c519d7d0920aa619ca315b18da6
[INFO] running `Command { std: "docker" "start" "-a" "f552ffec6732d36f7151b8a1167d7bd405454c519d7d0920aa619ca315b18da6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tagged_tree-6e9b302b6434e221)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test iterators::depth_first::tests::go_down_one_level_should_fail ... ok
[INFO] [stdout] test iterators::depth_first::tests::go_up_one_level_should_fail ... ok
[INFO] [stdout] test iterators::depth_first::tests::go_up_one_level_should_succeed ... ok
[INFO] [stdout] test iterators::depth_first::tests_mut::go_down_one_level_should_fail ... ok
[INFO] [stdout] test iterators::depth_first::tests::go_down_one_level_should_succeed ... ok
[INFO] [stdout] test iterators::depth_first::tests_mut::go_up_one_level_should_fail ... ok
[INFO] [stdout] test iterators::depth_first::tests_mut::go_down_one_level_should_succeed ... ok
[INFO] [stdout] test iterators::depth_first::tests_mut::go_up_one_level_should_succeed ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/basic.rs (/opt/rustwide/target/debug/deps/basic-d8332baf0040f268)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test can_make_tree ... ok
[INFO] [stdout] test can_make_tree_with_children ... 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] [stderr]      Running tests/breadth_first_traversal.rs (/opt/rustwide/target/debug/deps/breadth_first_traversal-6bacda4fb2523698)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test traverse_empty_tree ... ok
[INFO] [stdout] test traverse_empty_tree_mut ... ok
[INFO] [stdout] test traverse_tree_with_one_generation ... ok
[INFO] [stdout] test traverse_tree_with_one_generation_mut ... ok
[INFO] [stdout] test traverse_tree_with_two_generations ... ok
[INFO] [stdout] test traverse_tree_with_two_generations_mut ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/depth_first_traversal.rs (/opt/rustwide/target/debug/deps/depth_first_traversal-20a6f9b11ae31d72)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test traverse_empty_tree ... ok
[INFO] [stdout] test traverse_empty_tree_mut ... ok
[INFO] [stdout] test traverse_tree_with_one_generation_mut ... ok
[INFO] [stdout] test traverse_tree_with_one_generation ... ok
[INFO] [stdout] test traverse_tree_with_two_generations_mut ... ok
[INFO] [stdout] test traverse_tree_with_two_generations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tagged-tree
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 387) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.40s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f552ffec6732d36f7151b8a1167d7bd405454c519d7d0920aa619ca315b18da6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f552ffec6732d36f7151b8a1167d7bd405454c519d7d0920aa619ca315b18da6", kill_on_drop: false }`
[INFO] [stdout] f552ffec6732d36f7151b8a1167d7bd405454c519d7d0920aa619ca315b18da6