[INFO] fetching crate tree_iterators_rs 1.2.1...
[INFO] testing tree_iterators_rs-1.2.1 against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] extracting crate tree_iterators_rs 1.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate tree_iterators_rs 1.2.1 on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tree_iterators_rs 1.2.1
[INFO] finished tweaking crates.io crate tree_iterators_rs 1.2.1
[INFO] tweaked toml for crates.io crate tree_iterators_rs 1.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e1bf4bdb3a788e78778c12765b59d794d4682bb09e14b371fd59af092685623
[INFO] running `Command { std: "docker" "start" "-a" "2e1bf4bdb3a788e78778c12765b59d794d4682bb09e14b371fd59af092685623", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e1bf4bdb3a788e78778c12765b59d794d4682bb09e14b371fd59af092685623", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e1bf4bdb3a788e78778c12765b59d794d4682bb09e14b371fd59af092685623", kill_on_drop: false }`
[INFO] [stdout] 2e1bf4bdb3a788e78778c12765b59d794d4682bb09e14b371fd59af092685623
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd35b620943de2d0583ef2ba04a61473863bdbda31ee15d940cf02edd11f2e8c
[INFO] running `Command { std: "docker" "start" "-a" "cd35b620943de2d0583ef2ba04a61473863bdbda31ee15d940cf02edd11f2e8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling streaming-iterator v0.1.9
[INFO] [stderr]    Compiling tree_iterators_rs v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "cd35b620943de2d0583ef2ba04a61473863bdbda31ee15d940cf02edd11f2e8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd35b620943de2d0583ef2ba04a61473863bdbda31ee15d940cf02edd11f2e8c", kill_on_drop: false }`
[INFO] [stdout] cd35b620943de2d0583ef2ba04a61473863bdbda31ee15d940cf02edd11f2e8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 463e05844f476ce85f085bb96c27a73070ebcfdf4d72207c5177777821fe688f
[INFO] running `Command { std: "docker" "start" "-a" "463e05844f476ce85f085bb96c27a73070ebcfdf4d72207c5177777821fe688f", kill_on_drop: false }`
[INFO] [stderr]    Compiling tree_iterators_rs v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "463e05844f476ce85f085bb96c27a73070ebcfdf4d72207c5177777821fe688f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "463e05844f476ce85f085bb96c27a73070ebcfdf4d72207c5177777821fe688f", kill_on_drop: false }`
[INFO] [stdout] 463e05844f476ce85f085bb96c27a73070ebcfdf4d72207c5177777821fe688f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cdb72195afeafc3af283dd6539551067c8e6352ed88b3296070f3b860f252f13
[INFO] running `Command { std: "docker" "start" "-a" "cdb72195afeafc3af283dd6539551067c8e6352ed88b3296070f3b860f252f13", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tree_iterators_rs-1f3896a7e4f86c6c)
[INFO] [stdout] 
[INFO] [stdout] running 32 tests
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_inorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::binary_leaves_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_postorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_postorder_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::bfs_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_preorder_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::bfs_tests::bfs_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::bfs_tests::binary_bfs_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::bfs_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::bfs_tests::binary_bfs_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::leaves_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::bfs_tests::bfs_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::dfs_inorder_tests::dfs_inorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_preorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::dfs_inorder_tests::dfs_inorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_postorder_tests::binary_dfs_postorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::dfs_preorder_tests::binary_dfs_preorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::dfs_postorder_tests::binary_dfs_postorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_preorder_tests::binary_dfs_preorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_postorder_tests::dfs_postorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::dfs_preorder_tests::dfs_preorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_preorder_tests::dfs_preorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::bfs_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_inorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_postorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::dfs_postorder_tests::dfs_postorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::bfs_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_postorder_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::binary_leaves_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_preorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::leaves_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_preorder_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 32 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tree_iterators_rs
[INFO] [stdout] 
[INFO] [stdout] running 57 tests
[INFO] [stdout] test src/lib.rs - (line 128) ... ok
[INFO] [stdout] test src/lib.rs - (line 360) ... ok
[INFO] [stdout] test src/lib.rs - (line 323) ... ok
[INFO] [stdout] test src/lib.rs - (line 221) ... ok
[INFO] [stdout] test src/lib.rs - (line 181) ... ok
[INFO] [stdout] test src/lib.rs - (line 293) ... ok
[INFO] [stdout] test src/lib.rs - (line 253) ... ok
[INFO] [stdout] test src/lib.rs - (line 467) ... ok
[INFO] [stdout] test src/lib.rs - (line 521) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::AncestorsIterator::leaves (line 345) ... ignored
[INFO] [stdout] test src/lib.rs - (line 391) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::AncestorsIteratorMut::leaves (line 392) ... ignored
[INFO] [stdout] test src/lib.rs - (line 410) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedBinaryTreeNode::bfs_iter (line 1051) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedBinaryTreeNode::dfs_inorder_iter (line 1116) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedBinaryTreeNode::dfs_postorder_iter (line 1149) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedBinaryTreeNode::dfs_preorder_iter (line 1083) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedTreeNode::bfs_iter (line 1203) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedTreeNode::dfs_postorder_iter (line 1268) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedTreeNode::dfs_preorder_iter (line 1235) ... ignored
[INFO] [stdout] test src/lib.rs - (line 430) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedBinaryTreeNode::bfs_iter_mut (line 765) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedBinaryTreeNode::dfs_inorder_iter_mut (line 830) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedBinaryTreeNode::dfs_postorder_iter_mut (line 863) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedBinaryTreeNode::dfs_preorder_iter_mut (line 797) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedTreeNode::bfs_iter_mut (line 918) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedTreeNode::dfs_postorder_iter_mut (line 983) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedTreeNode::dfs_preorder_iter_mut (line 950) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedBinaryTreeNode::bfs (line 479) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedBinaryTreeNode::dfs_inorder (line 544) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedBinaryTreeNode::dfs_postorder (line 577) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedBinaryTreeNode::dfs_preorder (line 511) ... ignored
[INFO] [stdout] test src/lib.rs - (line 494) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::OwnedTreeNode::bfs (line 631) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedTreeNode::dfs_postorder (line 696) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedTreeNode::dfs_preorder (line 663) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::TreeIterator::attach_ancestors (line 135) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::TreeIterator::leaves (line 74) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::TreeIteratorMut::attach_ancestors (line 268) ... ignored
[INFO] [stdout] test src/lib.rs - (line 273) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::TreeIteratorMut::leaves (line 207) ... ignored
[INFO] [stdout] test src/lib.rs - (line 342) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::AncestorsIteratorMut::leaves (line 408) ... FAILED
[INFO] [stdout] test src/prelude.rs - prelude::TreeIteratorMut::attach_ancestors (line 298) ... FAILED
[INFO] [stdout] test src/prelude.rs - prelude::AncestorsIterator::leaves (line 361) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 201) ... ok
[INFO] [stdout] test src/lib.rs - (line 679) ... ok
[INFO] [stdout] test src/lib.rs - (line 76) ... ok
[INFO] [stdout] test src/lib.rs - (line 635) ... ok
[INFO] [stdout] test src/lib.rs - (line 710) ... ok
[INFO] [stdout] test src/lib.rs - (line 650) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::TreeIteratorMut::leaves (line 223) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::TreeIterator::leaves (line 90) ... ok
[INFO] [stdout] test src/lib.rs - (line 597) ... ok
[INFO] [stdout] test src/lib.rs - (line 548) ... ok
[INFO] [stdout] test src/lib.rs - (line 578) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::TreeIterator::attach_ancestors (line 165) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/prelude.rs - prelude::AncestorsIteratorMut::leaves (line 408) stdout ----
[INFO] [stdout] error[E0599]: no method named `next` found for associated type `impl AncestorsLeavesIteratorMut + StreamingIterator<Item = <... as StreamingIterator>::Item>` in the current scope
[INFO] [stdout]   --> src/prelude.rs:418:61
[INFO] [stdout]    |
[INFO] [stdout] 13 | while let Some(leaf_with_ancestors) = leaves_streaming_iter.next() {
[INFO] [stdout]    |                                                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/streaming-iterator-0.1.9/src/lib.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn next(&mut self) -> Option<&Self::Item> {
[INFO] [stdout]    |        ---- the method is available for `impl AncestorsLeavesIteratorMut + streaming_iterator::StreamingIterator<Item = <impl tree_iterators_rs::prelude::AncestorsIteratorMut + streaming_iterator::StreamingIterator<Item = [<impl tree_iterators_rs::prelude::TreeIteratorMut + Iterator<Item = <BinaryTreeNode<usize> as tree_iterators_rs::prelude::OwnedBinaryTreeNode>::OwnedValue> as Iterator>::Item]> as streaming_iterator::StreamingIterator>::Item>` here
[INFO] [stdout]    |
[INFO] [stdout]    = note: the full type name has been written to '/tmp/rustdoctestmoJ0S6/rust_out.long-type-2157487545653494992.txt'
[INFO] [stdout]    = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `StreamingIterator` which provides `next` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 3  + use streaming_iterator::StreamingIterator;
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `next_mut` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 13 | while let Some(leaf_with_ancestors) = leaves_streaming_iter.next_mut() {
[INFO] [stdout]    |                                                             ~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/prelude.rs - prelude::TreeIteratorMut::attach_ancestors (line 298) stdout ----
[INFO] [stdout] error[E0596]: cannot borrow `*slice` as mutable, as it is behind a `&` reference
[INFO] [stdout]   --> src/prelude.rs:314:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     .filter(|slice|
[INFO] [stdout]    |              ----- consider changing this binding's type to be: `&mut [usize]`
[INFO] [stdout] 19 |         slice.iter_mut().all(|value| *value % 2 == 0)
[INFO] [stdout]    |         ^^^^^ `slice` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/prelude.rs - prelude::AncestorsIterator::leaves (line 361) stdout ----
[INFO] [stdout] error[E0599]: no method named `next` found for associated type `impl AncestorsLeavesIteratorMut + StreamingIterator<Item = <... as StreamingIterator>::Item>` in the current scope
[INFO] [stdout]   --> src/prelude.rs:371:61
[INFO] [stdout]    |
[INFO] [stdout] 13 | while let Some(leaf_with_ancestors) = leaves_streaming_iter.next() {
[INFO] [stdout]    |                                                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/streaming-iterator-0.1.9/src/lib.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn next(&mut self) -> Option<&Self::Item> {
[INFO] [stdout]    |        ---- the method is available for `impl AncestorsLeavesIteratorMut + streaming_iterator::StreamingIterator<Item = <impl tree_iterators_rs::prelude::AncestorsIteratorMut + streaming_iterator::StreamingIterator<Item = [<impl tree_iterators_rs::prelude::TreeIteratorMut + Iterator<Item = <BinaryTreeNode<usize> as tree_iterators_rs::prelude::OwnedBinaryTreeNode>::OwnedValue> as Iterator>::Item]> as streaming_iterator::StreamingIterator>::Item>` here
[INFO] [stdout]    |
[INFO] [stdout]    = note: the full type name has been written to '/tmp/rustdoctestwvcWFz/rust_out.long-type-13666201123279150029.txt'
[INFO] [stdout]    = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `StreamingIterator` which provides `next` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 3  + use streaming_iterator::StreamingIterator;
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `next_mut` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 13 | while let Some(leaf_with_ancestors) = leaves_streaming_iter.next_mut() {
[INFO] [stdout]    |                                                             ~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/prelude.rs - prelude::AncestorsIterator::leaves (line 361)
[INFO] [stdout]     src/prelude.rs - prelude::AncestorsIteratorMut::leaves (line 408)
[INFO] [stdout]     src/prelude.rs - prelude::TreeIteratorMut::attach_ancestors (line 298)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 27 passed; 3 failed; 27 ignored; 0 measured; 0 filtered out; finished in 0.53s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "cdb72195afeafc3af283dd6539551067c8e6352ed88b3296070f3b860f252f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdb72195afeafc3af283dd6539551067c8e6352ed88b3296070f3b860f252f13", kill_on_drop: false }`
[INFO] [stdout] cdb72195afeafc3af283dd6539551067c8e6352ed88b3296070f3b860f252f13
[INFO] testing tree_iterators_rs-1.2.1 against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] extracting crate tree_iterators_rs 1.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate tree_iterators_rs 1.2.1 on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tree_iterators_rs 1.2.1
[INFO] finished tweaking crates.io crate tree_iterators_rs 1.2.1
[INFO] tweaked toml for crates.io crate tree_iterators_rs 1.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d9f3bb3fb32a87cae151048cec901df325880d1ae93d4eee2c0cddc8dda971c
[INFO] running `Command { std: "docker" "start" "-a" "9d9f3bb3fb32a87cae151048cec901df325880d1ae93d4eee2c0cddc8dda971c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d9f3bb3fb32a87cae151048cec901df325880d1ae93d4eee2c0cddc8dda971c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d9f3bb3fb32a87cae151048cec901df325880d1ae93d4eee2c0cddc8dda971c", kill_on_drop: false }`
[INFO] [stdout] 9d9f3bb3fb32a87cae151048cec901df325880d1ae93d4eee2c0cddc8dda971c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f959b8da34e147262387a419fc7bb6f131355bb964ce66ea22e6c28402409d5
[INFO] running `Command { std: "docker" "start" "-a" "3f959b8da34e147262387a419fc7bb6f131355bb964ce66ea22e6c28402409d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling streaming-iterator v0.1.9
[INFO] [stderr]    Compiling tree_iterators_rs v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "3f959b8da34e147262387a419fc7bb6f131355bb964ce66ea22e6c28402409d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f959b8da34e147262387a419fc7bb6f131355bb964ce66ea22e6c28402409d5", kill_on_drop: false }`
[INFO] [stdout] 3f959b8da34e147262387a419fc7bb6f131355bb964ce66ea22e6c28402409d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0389c34dc686ed936f74dee6f7c0dc89869b51745d49754af14dc1bc946ddecf
[INFO] running `Command { std: "docker" "start" "-a" "0389c34dc686ed936f74dee6f7c0dc89869b51745d49754af14dc1bc946ddecf", kill_on_drop: false }`
[INFO] [stderr]    Compiling tree_iterators_rs v1.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "0389c34dc686ed936f74dee6f7c0dc89869b51745d49754af14dc1bc946ddecf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0389c34dc686ed936f74dee6f7c0dc89869b51745d49754af14dc1bc946ddecf", kill_on_drop: false }`
[INFO] [stdout] 0389c34dc686ed936f74dee6f7c0dc89869b51745d49754af14dc1bc946ddecf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e7072980c0d25ec4d032dde707d41c97965651a9f4d18dbf2a11e5627030b00
[INFO] running `Command { std: "docker" "start" "-a" "5e7072980c0d25ec4d032dde707d41c97965651a9f4d18dbf2a11e5627030b00", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tree_iterators_rs-1f3896a7e4f86c6c)
[INFO] [stdout] 
[INFO] [stdout] running 32 tests
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_inorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::binary_leaves_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_postorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::bfs_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_postorder_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_preorder_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::bfs_tests::bfs_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::leaves_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::bfs_tests::bfs_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::dfs_preorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::ancestors_leaves_tests::bfs_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::bfs_tests::binary_bfs_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_inorder_tests::dfs_inorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::bfs_tests::binary_bfs_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::dfs_inorder_tests::dfs_inorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_postorder_tests::binary_dfs_postorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::dfs_postorder_tests::binary_dfs_postorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_postorder_tests::dfs_postorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::dfs_postorder_tests::dfs_postorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_preorder_tests::binary_dfs_preorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::dfs_preorder_tests::binary_dfs_preorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_preorder_tests::dfs_preorder_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::dfs_preorder_tests::dfs_preorder_attach_ancestors_works ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::bfs_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_inorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::bfs_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::binary_leaves_has_correct_order ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_preorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_postorder_binary_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_postorder_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::dfs_preorder_transformation_can_happen_mid_traversal ... ok
[INFO] [stdout] test prelude::tests::leaves_tests::leaves_has_correct_order ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 32 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tree_iterators_rs
[INFO] [stdout] 
[INFO] [stdout] running 57 tests
[INFO] [stdout] test src/lib.rs - (line 128) ... ok
[INFO] [stdout] test src/lib.rs - (line 360) ... ok
[INFO] [stdout] test src/lib.rs - (line 221) ... ok
[INFO] [stdout] test src/lib.rs - (line 293) ... ok
[INFO] [stdout] test src/lib.rs - (line 323) ... ok
[INFO] [stdout] test src/lib.rs - (line 521) ... ok
[INFO] [stdout] test src/lib.rs - (line 391) ... ok
[INFO] [stdout] test src/lib.rs - (line 467) ... ok
[INFO] [stdout] test src/lib.rs - (line 430) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::AncestorsIterator::leaves (line 345) ... ignored
[INFO] [stdout] test src/lib.rs - (line 342) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::AncestorsIteratorMut::leaves (line 392) ... ignored
[INFO] [stdout] test src/lib.rs - (line 494) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedBinaryTreeNode::bfs_iter (line 1051) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedBinaryTreeNode::dfs_inorder_iter (line 1116) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedBinaryTreeNode::dfs_postorder_iter (line 1149) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedBinaryTreeNode::dfs_preorder_iter (line 1083) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedTreeNode::bfs_iter (line 1203) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedTreeNode::dfs_postorder_iter (line 1268) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::BorrowedTreeNode::dfs_preorder_iter (line 1235) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedBinaryTreeNode::bfs_iter_mut (line 765) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedBinaryTreeNode::dfs_inorder_iter_mut (line 830) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedBinaryTreeNode::dfs_postorder_iter_mut (line 863) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedBinaryTreeNode::dfs_preorder_iter_mut (line 797) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedTreeNode::bfs_iter_mut (line 918) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedTreeNode::dfs_postorder_iter_mut (line 983) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::MutBorrowedTreeNode::dfs_preorder_iter_mut (line 950) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedBinaryTreeNode::bfs (line 479) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedBinaryTreeNode::dfs_inorder (line 544) ... ignored
[INFO] [stdout] test src/lib.rs - (line 253) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::OwnedBinaryTreeNode::dfs_postorder (line 577) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedBinaryTreeNode::dfs_preorder (line 511) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedTreeNode::bfs (line 631) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedTreeNode::dfs_postorder (line 696) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::OwnedTreeNode::dfs_preorder (line 663) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::TreeIterator::attach_ancestors (line 135) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::TreeIterator::leaves (line 74) ... ignored
[INFO] [stdout] test src/lib.rs - (line 410) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::TreeIteratorMut::attach_ancestors (line 268) ... ignored
[INFO] [stdout] test src/prelude.rs - prelude::AncestorsIterator::leaves (line 361) ... FAILED
[INFO] [stdout] test src/prelude.rs - prelude::TreeIteratorMut::leaves (line 207) ... ignored
[INFO] [stdout] test src/lib.rs - (line 201) ... ok
[INFO] [stdout] test src/lib.rs - (line 273) ... ok
[INFO] [stdout] test src/lib.rs - (line 181) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::AncestorsIteratorMut::leaves (line 408) ... FAILED
[INFO] [stdout] test src/prelude.rs - prelude::TreeIteratorMut::attach_ancestors (line 298) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 635) ... ok
[INFO] [stdout] test src/lib.rs - (line 710) ... ok
[INFO] [stdout] test src/lib.rs - (line 679) ... ok
[INFO] [stdout] test src/lib.rs - (line 650) ... ok
[INFO] [stdout] test src/lib.rs - (line 76) ... ok
[INFO] [stdout] test src/lib.rs - (line 548) ... ok
[INFO] [stdout] test src/lib.rs - (line 578) ... ok
[INFO] [stdout] test src/lib.rs - (line 597) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::TreeIterator::leaves (line 90) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::TreeIterator::attach_ancestors (line 165) ... ok
[INFO] [stdout] test src/prelude.rs - prelude::TreeIteratorMut::leaves (line 223) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/prelude.rs - prelude::AncestorsIterator::leaves (line 361) stdout ----
[INFO] [stdout] error[E0599]: no method named `next` found for associated type `impl AncestorsLeavesIteratorMut + StreamingIterator<Item = <... as StreamingIterator>::Item>` in the current scope
[INFO] [stdout]   --> src/prelude.rs:371:61
[INFO] [stdout]    |
[INFO] [stdout] 13 | while let Some(leaf_with_ancestors) = leaves_streaming_iter.next() {
[INFO] [stdout]    |                                                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/streaming-iterator-0.1.9/src/lib.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn next(&mut self) -> Option<&Self::Item> {
[INFO] [stdout]    |        ---- the method is available for `impl AncestorsLeavesIteratorMut + streaming_iterator::StreamingIterator<Item = <impl tree_iterators_rs::prelude::AncestorsIteratorMut + streaming_iterator::StreamingIterator<Item = [<impl tree_iterators_rs::prelude::TreeIteratorMut + Iterator<Item = <BinaryTreeNode<usize> as tree_iterators_rs::prelude::OwnedBinaryTreeNode>::OwnedValue> as Iterator>::Item]> as streaming_iterator::StreamingIterator>::Item>` here
[INFO] [stdout]    |
[INFO] [stdout]    = note: the full type name has been written to '/tmp/rustdoctest6TEaEs/rust_out.long-type-6016421528432536255.txt'
[INFO] [stdout]    = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `StreamingIterator` which provides `next` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 3  + use streaming_iterator::StreamingIterator;
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `next_mut` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 13 | while let Some(leaf_with_ancestors) = leaves_streaming_iter.next_mut() {
[INFO] [stdout]    |                                                             ~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/prelude.rs - prelude::AncestorsIteratorMut::leaves (line 408) stdout ----
[INFO] [stdout] error[E0599]: no method named `next` found for associated type `impl AncestorsLeavesIteratorMut + StreamingIterator<Item = <... as StreamingIterator>::Item>` in the current scope
[INFO] [stdout]   --> src/prelude.rs:418:61
[INFO] [stdout]    |
[INFO] [stdout] 13 | while let Some(leaf_with_ancestors) = leaves_streaming_iter.next() {
[INFO] [stdout]    |                                                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/streaming-iterator-0.1.9/src/lib.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn next(&mut self) -> Option<&Self::Item> {
[INFO] [stdout]    |        ---- the method is available for `impl AncestorsLeavesIteratorMut + streaming_iterator::StreamingIterator<Item = <impl tree_iterators_rs::prelude::AncestorsIteratorMut + streaming_iterator::StreamingIterator<Item = [<impl tree_iterators_rs::prelude::TreeIteratorMut + Iterator<Item = <BinaryTreeNode<usize> as tree_iterators_rs::prelude::OwnedBinaryTreeNode>::OwnedValue> as Iterator>::Item]> as streaming_iterator::StreamingIterator>::Item>` here
[INFO] [stdout]    |
[INFO] [stdout]    = note: the full type name has been written to '/tmp/rustdoctestFstzQ7/rust_out.long-type-5052938697343234200.txt'
[INFO] [stdout]    = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `StreamingIterator` which provides `next` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]    |
[INFO] [stdout] 3  + use streaming_iterator::StreamingIterator;
[INFO] [stdout]    |
[INFO] [stdout] help: there is a method `next_mut` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 13 | while let Some(leaf_with_ancestors) = leaves_streaming_iter.next_mut() {
[INFO] [stdout]    |                                                             ~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/prelude.rs - prelude::TreeIteratorMut::attach_ancestors (line 298) stdout ----
[INFO] [stdout] error[E0596]: cannot borrow `*slice` as mutable, as it is behind a `&` reference
[INFO] [stdout]   --> src/prelude.rs:314:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     .filter(|slice|
[INFO] [stdout]    |              ----- consider changing this binding's type to be: `&mut [usize]`
[INFO] [stdout] 19 |         slice.iter_mut().all(|value| *value % 2 == 0)
[INFO] [stdout]    |         ^^^^^ `slice` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/prelude.rs - prelude::AncestorsIterator::leaves (line 361)
[INFO] [stdout]     src/prelude.rs - prelude::AncestorsIteratorMut::leaves (line 408)
[INFO] [stdout]     src/prelude.rs - prelude::TreeIteratorMut::attach_ancestors (line 298)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 27 passed; 3 failed; 27 ignored; 0 measured; 0 filtered out; finished in 0.55s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "5e7072980c0d25ec4d032dde707d41c97965651a9f4d18dbf2a11e5627030b00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e7072980c0d25ec4d032dde707d41c97965651a9f4d18dbf2a11e5627030b00", kill_on_drop: false }`
[INFO] [stdout] 5e7072980c0d25ec4d032dde707d41c97965651a9f4d18dbf2a11e5627030b00
