[INFO] fetching crate tree_arena 0.2.0...
[INFO] testing tree_arena-0.2.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate tree_arena 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate tree_arena 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate tree_arena 0.2.0
[INFO] tweaked toml for crates.io crate tree_arena 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tree_arena 0.2.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tree_arena 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e8255ee0dac3d0e6b5ad4f9474be6c6f7da2bc8be5b552e8691c086fbf8d36a
[INFO] running `Command { std: "docker" "start" "-a" "4e8255ee0dac3d0e6b5ad4f9474be6c6f7da2bc8be5b552e8691c086fbf8d36a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e8255ee0dac3d0e6b5ad4f9474be6c6f7da2bc8be5b552e8691c086fbf8d36a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e8255ee0dac3d0e6b5ad4f9474be6c6f7da2bc8be5b552e8691c086fbf8d36a", kill_on_drop: false }`
[INFO] [stdout] 4e8255ee0dac3d0e6b5ad4f9474be6c6f7da2bc8be5b552e8691c086fbf8d36a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85a2a1cdfbd5b4bb26066e893c061e4a50f35bbfb6a50490f32eeff3e0e482b6
[INFO] running `Command { std: "docker" "start" "-a" "85a2a1cdfbd5b4bb26066e893c061e4a50f35bbfb6a50490f32eeff3e0e482b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling foldhash v0.2.0
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling hashbrown v0.16.0
[INFO] [stderr]    Compiling tree_arena v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "85a2a1cdfbd5b4bb26066e893c061e4a50f35bbfb6a50490f32eeff3e0e482b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85a2a1cdfbd5b4bb26066e893c061e4a50f35bbfb6a50490f32eeff3e0e482b6", kill_on_drop: false }`
[INFO] [stdout] 85a2a1cdfbd5b4bb26066e893c061e4a50f35bbfb6a50490f32eeff3e0e482b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0597437dccb9240b8c6d38b6dae1cc73500c16169b370d51d457072383686973
[INFO] running `Command { std: "docker" "start" "-a" "0597437dccb9240b8c6d38b6dae1cc73500c16169b370d51d457072383686973", kill_on_drop: false }`
[INFO] [stderr]    Compiling tree_arena v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "0597437dccb9240b8c6d38b6dae1cc73500c16169b370d51d457072383686973", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0597437dccb9240b8c6d38b6dae1cc73500c16169b370d51d457072383686973", kill_on_drop: false }`
[INFO] [stdout] 0597437dccb9240b8c6d38b6dae1cc73500c16169b370d51d457072383686973
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 05c4d7c1272bf3808225c06481b382321cbbdf064382a00149b45541b1d911e9
[INFO] running `Command { std: "docker" "start" "-a" "05c4d7c1272bf3808225c06481b382321cbbdf064382a00149b45541b1d911e9", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tree_arena-72af9fe774f4368d)
[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] [stderr]      Running tests/basic_tests.rs (/opt/rustwide/target/debug/deps/basic_tests-46233501a9e53ded)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test arena_mutate_parent_and_child_at_once ... ok
[INFO] [stdout] test child_ids ... ok
[INFO] [stdout] test mem_swap ... ok
[INFO] [stdout] test arena_item_removal ... ok
[INFO] [stdout] test arena_insertions ... ok
[INFO] [stdout] test reparent_node_simple ... ok
[INFO] [stdout] test reparent_between_roots ... ok
[INFO] [stdout] test reparent_node_with_children ... ok
[INFO] [stdout] test reparent_node_to_parent ... ok
[INFO] [stdout] test root_ids ... ok
[INFO] [stdout] test reparent_child_equals_new_parent - should panic ... ok
[INFO] [stdout] test reparent_cycle - should panic ... ok
[INFO] [stdout] test reparent_new_parent_not_found - should panic ... ok
[INFO] [stdout] test reparent_root - should panic ... ok
[INFO] [stdout] test arena_duplicate_insertion - should panic ... ok
[INFO] [stdout] test reparent_child_not_found - should panic ... ok
[INFO] [stdout] test reparent_node_to_great_grandparent ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tree_arena
[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" "05c4d7c1272bf3808225c06481b382321cbbdf064382a00149b45541b1d911e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05c4d7c1272bf3808225c06481b382321cbbdf064382a00149b45541b1d911e9", kill_on_drop: false }`
[INFO] [stdout] 05c4d7c1272bf3808225c06481b382321cbbdf064382a00149b45541b1d911e9