[INFO] fetching crate generational-indextree 1.1.2...
[INFO] testing generational-indextree-1.1.2 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate generational-indextree 1.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate generational-indextree 1.1.2 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate generational-indextree 1.1.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate generational-indextree 1.1.2
[INFO] tweaked toml for crates.io crate generational-indextree 1.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate generational-indextree 1.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b5585783f5494d3738dab4ef6e838fa11cdc005744f703f835eac0ce090c7adf
[INFO] running `Command { std: "docker" "start" "-a" "b5585783f5494d3738dab4ef6e838fa11cdc005744f703f835eac0ce090c7adf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5585783f5494d3738dab4ef6e838fa11cdc005744f703f835eac0ce090c7adf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5585783f5494d3738dab4ef6e838fa11cdc005744f703f835eac0ce090c7adf", kill_on_drop: false }`
[INFO] [stdout] b5585783f5494d3738dab4ef6e838fa11cdc005744f703f835eac0ce090c7adf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12eb4b655bbbee95a75d743c1c9ef4d12ce85a85f82c3b4d79249d02b2b6ff55
[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" "12eb4b655bbbee95a75d743c1c9ef4d12ce85a85f82c3b4d79249d02b2b6ff55", kill_on_drop: false }`
[INFO] [stderr]    Compiling generational-arena v0.2.8
[INFO] [stderr]    Compiling generational-indextree v1.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "12eb4b655bbbee95a75d743c1c9ef4d12ce85a85f82c3b4d79249d02b2b6ff55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12eb4b655bbbee95a75d743c1c9ef4d12ce85a85f82c3b4d79249d02b2b6ff55", kill_on_drop: false }`
[INFO] [stdout] 12eb4b655bbbee95a75d743c1c9ef4d12ce85a85f82c3b4d79249d02b2b6ff55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b76ab566e54a9bd428f9a5c7891b1dadfcb4301b562e18d284d7db1ae33aec8d
[INFO] running `Command { std: "docker" "start" "-a" "b76ab566e54a9bd428f9a5c7891b1dadfcb4301b562e18d284d7db1ae33aec8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling generational-indextree v1.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> tests/lib.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 |     };
[INFO] [stdout]    |      ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n1_id`
[INFO] [stdout]    --> src/arena.rs:279:9
[INFO] [stdout]     |
[INFO] [stdout] 279 |     let n1_id = arena.new_node("1");
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_n1_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n2_id`
[INFO] [stdout]    --> src/arena.rs:280:9
[INFO] [stdout]     |
[INFO] [stdout] 280 |     let n2_id = arena.new_node("2");
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_n2_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n3_id`
[INFO] [stdout]    --> src/arena.rs:281:9
[INFO] [stdout]     |
[INFO] [stdout] 281 |     let n3_id = arena.new_node("3");
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_n3_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "b76ab566e54a9bd428f9a5c7891b1dadfcb4301b562e18d284d7db1ae33aec8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b76ab566e54a9bd428f9a5c7891b1dadfcb4301b562e18d284d7db1ae33aec8d", kill_on_drop: false }`
[INFO] [stdout] b76ab566e54a9bd428f9a5c7891b1dadfcb4301b562e18d284d7db1ae33aec8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7c9eafb55259fbddfc2412c05a55274cebc0c4cb5da6e0e2b69fda99c22fd796
[INFO] running `Command { std: "docker" "start" "-a" "7c9eafb55259fbddfc2412c05a55274cebc0c4cb5da6e0e2b69fda99c22fd796", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `n1_id`
[INFO] [stderr]    --> src/arena.rs:279:9
[INFO] [stderr]     |
[INFO] [stderr] 279 |     let n1_id = arena.new_node("1");
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_n1_id`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n2_id`
[INFO] [stderr]    --> src/arena.rs:280:9
[INFO] [stderr]     |
[INFO] [stderr] 280 |     let n2_id = arena.new_node("2");
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_n2_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n3_id`
[INFO] [stderr]    --> src/arena.rs:281:9
[INFO] [stderr]     |
[INFO] [stderr] 281 |     let n3_id = arena.new_node("3");
[INFO] [stderr]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_n3_id`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> tests/lib.rs:14:6
[INFO] [stderr]    |
[INFO] [stderr] 14 |     };
[INFO] [stderr]    |      ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/generational_indextree-00b01fd71e79726a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/insert-error.rs (/opt/rustwide/target/debug/deps/insert_error-f024860df926d2d7)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test insert_after_self ... ok
[INFO] [stdout] test prepend_self ... ok
[INFO] [stdout] test insert_before_self ... ok
[INFO] [stderr]      Running tests/lib.rs (/opt/rustwide/target/debug/deps/lib-037ef98f5bb6dda8)
[INFO] [stdout] test append_self ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test get ... ok
[INFO] [stdout] test get_mut ... ok
[INFO] [stdout] test remove ... ok
[INFO] [stdout] test insert_removed_node ... ok
[INFO] [stdout] test is_removed ... ok
[INFO] [stdout] test iter ... ok
[INFO] [stdout] test success_create ... ok
[INFO] [stdout] test first_prepend ... ok
[INFO] [stdout] test success_detach ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test middle_child_with_multiple_children ... ok
[INFO] [stdout] test middle_child_with_no_children ... ok
[INFO] [stdout] test toplevel_with_no_child ... ok
[INFO] [stderr]      Running tests/remove.rs (/opt/rustwide/target/debug/deps/remove-bb46d3354097784c)
[INFO] [stdout] test middle_child_with_single_child ... ok
[INFO] [stdout] test last_child_with_no_children ... ok
[INFO] [stdout] test first_child_with_no_children ... ok
[INFO] [stdout] test single_child_with_no_children ... ok
[INFO] [stdout] test single_child_with_single_child ... ok
[INFO] [stdout] test toplevel_with_multiple_children ... ok
[INFO] [stdout] test toplevel_with_single_child ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests generational-indextree
[INFO] [stdout] 
[INFO] [stdout] running 38 tests
[INFO] [stdout] test src/id.rs - id::NodeId::checked_prepend (line 604) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::get (line 102) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::get_mut (line 135) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::iter_pairs (line 214) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::iter (line 185) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::checked_insert_after (line 695) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::is_empty (line 81) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::get2_mut (line 160) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::append (line 474) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::new_node (line 48) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::checked_append (line 517) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::ancestors (line 61) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::checked_insert_before (line 790) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::get (line 112) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::count (line 63) ... ok
[INFO] [stdout] test src/arena.rs - arena::Arena<T>::iter (line 197) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::children (line 178) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::descendants (line 253) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::insert_before (line 742) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::detach (line 409) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::following_siblings (line 143) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::preceding_siblings (line 104) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::insert_after (line 646) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::prepend (line 561) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::reverse_traverse (line 342) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::remove (line 836) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::reverse_children (line 213) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::first_child (line 85) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::remove_subtree (line 913) ... ok
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::traverse (line 298) ... ok
[INFO] [stdout] test src/id.rs - id::NodeId::reverse_traverse (line 376) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::parent (line 57) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::last_child (line 113) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::previous_sibling (line 142) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::next_sibling (line 196) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::previous_sibling (line 166) ... ok
[INFO] [stdout] test src/node.rs - node::Node<T>::next_sibling (line 220) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 38 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 8.57s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7c9eafb55259fbddfc2412c05a55274cebc0c4cb5da6e0e2b69fda99c22fd796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c9eafb55259fbddfc2412c05a55274cebc0c4cb5da6e0e2b69fda99c22fd796", kill_on_drop: false }`
[INFO] [stdout] 7c9eafb55259fbddfc2412c05a55274cebc0c4cb5da6e0e2b69fda99c22fd796