[INFO] fetching crate indextree 4.3.1...
[INFO] testing indextree-4.3.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate indextree 4.3.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate indextree 4.3.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate indextree 4.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate indextree 4.3.1
[INFO] tweaked toml for crates.io crate indextree 4.3.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate indextree 4.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e0691b677f3ebac8e316a985f3d09ac0ba96e963a5105a5ced1c5a94ee03b07
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2e0691b677f3ebac8e316a985f3d09ac0ba96e963a5105a5ced1c5a94ee03b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e0691b677f3ebac8e316a985f3d09ac0ba96e963a5105a5ced1c5a94ee03b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0691b677f3ebac8e316a985f3d09ac0ba96e963a5105a5ced1c5a94ee03b07", kill_on_drop: false }`
[INFO] [stdout] 2e0691b677f3ebac8e316a985f3d09ac0ba96e963a5105a5ced1c5a94ee03b07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dd2693afd522cb893099c577fc3a1368f7a4de6f03d883790bbf6654a899f4d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7dd2693afd522cb893099c577fc3a1368f7a4de6f03d883790bbf6654a899f4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling indextree v4.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "7dd2693afd522cb893099c577fc3a1368f7a4de6f03d883790bbf6654a899f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dd2693afd522cb893099c577fc3a1368f7a4de6f03d883790bbf6654a899f4d", kill_on_drop: false }`
[INFO] [stdout] 7dd2693afd522cb893099c577fc3a1368f7a4de6f03d883790bbf6654a899f4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b18425a792a57e856e2b489c4ade9a11d31f5c5633840c93fd2d5071c9f45f0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1b18425a792a57e856e2b489c4ade9a11d31f5c5633840c93fd2d5071c9f45f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling indextree v4.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.02s
[INFO] running `Command { std: "docker" "inspect" "1b18425a792a57e856e2b489c4ade9a11d31f5c5633840c93fd2d5071c9f45f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b18425a792a57e856e2b489c4ade9a11d31f5c5633840c93fd2d5071c9f45f0", kill_on_drop: false }`
[INFO] [stdout] 1b18425a792a57e856e2b489c4ade9a11d31f5c5633840c93fd2d5071c9f45f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7b0aa1ed7dd4f3574deca9db44a83da1f8f394ef80dadecc9af03ec7dd6930b6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7b0aa1ed7dd4f3574deca9db44a83da1f8f394ef80dadecc9af03ec7dd6930b6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/indextree-6e753ca9a3d21186
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test arena::reuse_node ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/insert_error-9e6bc5af2cb389ed
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test insert_after_self ... ok
[INFO] [stdout] test insert_before_self ... ok
[INFO] [stdout] test prepend_self ... ok
[INFO] [stdout] test append_self ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test first_prepend ... ok
[INFO] [stdout] test is_removed ... ok
[INFO] [stdout] test retrieve_node_id ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lib-07b41594e889d830
[INFO] [stdout] test remove ... ok
[INFO] [stdout] test get ... ok
[INFO] [stdout] test success_create ... ok
[INFO] [stdout] test success_detach ... ok
[INFO] [stdout] test get_mut ... ok
[INFO] [stdout] test insert_removed_node ... ok
[INFO] [stdout] test iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/remove-bf1b5ed1c7c83b99
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test first_child_with_no_children ... ok
[INFO] [stdout] test middle_child_with_no_children ... ok
[INFO] [stdout] test middle_child_with_single_child ... ok
[INFO] [stdout] test single_child_with_no_children ... ok
[INFO] [stdout] test middle_child_with_multiple_children ... ok
[INFO] [stdout] test single_child_with_single_child ... ok
[INFO] [stdout] test toplevel_with_no_child ... ok
[INFO] [stdout] test toplevel_with_single_child ... ok
[INFO] [stdout] test toplevel_with_multiple_children ... ok
[INFO] [stdout] test last_child_with_no_children ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests indextree
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test src/id.rs - id::NodeId::checked_prepend (line 658) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::get_mut (line 172) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::checked_insert_after (line 753) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::count (line 100) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::get (line 139) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::append (line 523) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::get (line 149) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::checked_append (line 568) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::checked_insert_before (line 853) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::iter (line 192) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::iter (line 204) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::ancestors (line 107) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::new_node (line 72) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::is_empty (line 118) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::children (line 224) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::preceding_siblings (line 150) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::traverse (line 344) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::following_siblings (line 189) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::detach (line 455) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::reverse_traverse (line 422) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::reverse_children (line 259) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::prepend (line 613) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::insert_after (line 702) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::reverse_traverse (line 388) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::insert_before (line 802) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::descendants (line 299) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::remove_subtree (line 980) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::remove (line 902) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::first_child (line 117) ... ok
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::is_removed (line 281) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::next_sibling (line 228) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::last_child (line 145) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::next_sibling (line 252) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::parent (line 89) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::previous_sibling (line 198) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::previous_sibling (line 174) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 37 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7b0aa1ed7dd4f3574deca9db44a83da1f8f394ef80dadecc9af03ec7dd6930b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b0aa1ed7dd4f3574deca9db44a83da1f8f394ef80dadecc9af03ec7dd6930b6", kill_on_drop: false }`
[INFO] [stdout] 7b0aa1ed7dd4f3574deca9db44a83da1f8f394ef80dadecc9af03ec7dd6930b6