[INFO] fetching crate grove 0.2.0...
[INFO] testing grove-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate grove 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate grove 0.2.0
[INFO] finished tweaking crates.io crate grove 0.2.0
[INFO] tweaked toml for crates.io crate grove 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate grove 0.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate grove 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded text_io v0.1.8
[INFO] [stderr]   Downloaded derive_destructure v1.0.0
[INFO] [stderr]   Downloaded recursive_reference v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42018134958a741865efb77d52fd0bebce811ac72393e904cae72057a2a26f61
[INFO] running `Command { std: "docker" "start" "-a" "42018134958a741865efb77d52fd0bebce811ac72393e904cae72057a2a26f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42018134958a741865efb77d52fd0bebce811ac72393e904cae72057a2a26f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42018134958a741865efb77d52fd0bebce811ac72393e904cae72057a2a26f61", kill_on_drop: false }`
[INFO] [stdout] 42018134958a741865efb77d52fd0bebce811ac72393e904cae72057a2a26f61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94f07e01fe1c7fc785bf25d9e6eb4c7694f70ebf1ed773efaf5721c627358c6c
[INFO] running `Command { std: "docker" "start" "-a" "94f07e01fe1c7fc785bf25d9e6eb4c7694f70ebf1ed773efaf5721c627358c6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling recursive_reference v0.3.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling derive_destructure v1.0.0
[INFO] [stderr]    Compiling grove v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `implementations::*`
[INFO] [stdout]   --> src/trees/basic_tree/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub use implementations::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/trees/mod.rs:75:39
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn slice<L: locators::Locator<D>>(&mut self, locator: L) -> slice::Slice<D, Self, L> {
[INFO] [stdout]    |                                       ^^^^^^^^^                 ------------------------ the same lifetime is hidden here
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn slice<L: locators::Locator<D>>(&mut self, locator: L) -> slice::Slice<'_, D, Self, L> {
[INFO] [stdout]    |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/trees/basic_tree/walker.rs:282:28
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn detached_walker(&mut self) -> BasicWalker<D, T> {
[INFO] [stdout]     |                            ^^^^^^^^^     ----------------- the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn detached_walker(&mut self) -> BasicWalker<'_, D, T> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/trees/splay.rs:65:25
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn basic_walker(&mut self) -> BasicWalker<D> {
[INFO] [stdout]    |                         ^^^^^^^^^     -------------- the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn basic_walker(&mut self) -> BasicWalker<'_, D> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.82s
[INFO] running `Command { std: "docker" "inspect" "94f07e01fe1c7fc785bf25d9e6eb4c7694f70ebf1ed773efaf5721c627358c6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94f07e01fe1c7fc785bf25d9e6eb4c7694f70ebf1ed773efaf5721c627358c6c", kill_on_drop: false }`
[INFO] [stdout] 94f07e01fe1c7fc785bf25d9e6eb4c7694f70ebf1ed773efaf5721c627358c6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6b7adc085a17aee84df25339a2f7738bace5e20aac942eacbbc7da0deeed573
[INFO] running `Command { std: "docker" "start" "-a" "e6b7adc085a17aee84df25339a2f7738bace5e20aac942eacbbc7da0deeed573", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling text_io v0.1.8
[INFO] [stdout] warning: unused import: `implementations::*`
[INFO] [stdout]   --> src/trees/basic_tree/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub use implementations::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/trees/mod.rs:75:39
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn slice<L: locators::Locator<D>>(&mut self, locator: L) -> slice::Slice<D, Self, L> {
[INFO] [stdout]    |                                       ^^^^^^^^^                 ------------------------ the same lifetime is hidden here
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn slice<L: locators::Locator<D>>(&mut self, locator: L) -> slice::Slice<'_, D, Self, L> {
[INFO] [stdout]    |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/trees/basic_tree/walker.rs:282:28
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn detached_walker(&mut self) -> BasicWalker<D, T> {
[INFO] [stdout]     |                            ^^^^^^^^^     ----------------- the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn detached_walker(&mut self) -> BasicWalker<'_, D, T> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/trees/splay.rs:65:25
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn basic_walker(&mut self) -> BasicWalker<D> {
[INFO] [stdout]    |                         ^^^^^^^^^     -------------- the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn basic_walker(&mut self) -> BasicWalker<'_, D> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling grove v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `implementations::*`
[INFO] [stdout]   --> src/trees/basic_tree/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub use implementations::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/trees/mod.rs:75:39
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn slice<L: locators::Locator<D>>(&mut self, locator: L) -> slice::Slice<D, Self, L> {
[INFO] [stdout]    |                                       ^^^^^^^^^                 ------------------------ the same lifetime is hidden here
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn slice<L: locators::Locator<D>>(&mut self, locator: L) -> slice::Slice<'_, D, Self, L> {
[INFO] [stdout]    |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/trees/basic_tree/walker.rs:282:28
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn detached_walker(&mut self) -> BasicWalker<D, T> {
[INFO] [stdout]     |                            ^^^^^^^^^     ----------------- the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn detached_walker(&mut self) -> BasicWalker<'_, D, T> {
[INFO] [stdout]     |                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/trees/splay.rs:65:25
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn basic_walker(&mut self) -> BasicWalker<D> {
[INFO] [stdout]    |                         ^^^^^^^^^     -------------- the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn basic_walker(&mut self) -> BasicWalker<'_, D> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.80s
[INFO] running `Command { std: "docker" "inspect" "e6b7adc085a17aee84df25339a2f7738bace5e20aac942eacbbc7da0deeed573", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b7adc085a17aee84df25339a2f7738bace5e20aac942eacbbc7da0deeed573", kill_on_drop: false }`
[INFO] [stdout] e6b7adc085a17aee84df25339a2f7738bace5e20aac942eacbbc7da0deeed573
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6fe62c25b0dbd44352618aaaf8a57ecfe4e201d7514da1e4f79d4dc1ccb8bb20
[INFO] running `Command { std: "docker" "start" "-a" "6fe62c25b0dbd44352618aaaf8a57ecfe4e201d7514da1e4f79d4dc1ccb8bb20", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `implementations::*`
[INFO] [stderr]   --> src/trees/basic_tree/mod.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub use implementations::*;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/trees/mod.rs:75:39
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn slice<L: locators::Locator<D>>(&mut self, locator: L) -> slice::Slice<D, Self, L> {
[INFO] [stderr]    |                                       ^^^^^^^^^                 ------------------------ the same lifetime is hidden here
[INFO] [stderr]    |                                       |
[INFO] [stderr]    |                                       the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn slice<L: locators::Locator<D>>(&mut self, locator: L) -> slice::Slice<'_, D, Self, L> {
[INFO] [stderr]    |                                                                              +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/trees/basic_tree/walker.rs:282:28
[INFO] [stderr]     |
[INFO] [stderr] 282 |     pub fn detached_walker(&mut self) -> BasicWalker<D, T> {
[INFO] [stderr]     |                            ^^^^^^^^^     ----------------- the same lifetime is hidden here
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 282 |     pub fn detached_walker(&mut self) -> BasicWalker<'_, D, T> {
[INFO] [stderr]     |                                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/trees/splay.rs:65:25
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn basic_walker(&mut self) -> BasicWalker<D> {
[INFO] [stderr]    |                         ^^^^^^^^^     -------------- the same lifetime is hidden here
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn basic_walker(&mut self) -> BasicWalker<'_, D> {
[INFO] [stderr]    |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: `grove` (lib) generated 4 warnings (run `cargo fix --lib -p grove` to apply 1 suggestion)
[INFO] [stderr] warning: `grove` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/grove-eb45be21a52bb238)
[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/integration_tests.rs (/opt/rustwide/target/debug/deps/integration_tests-4dfa77248d177a4b)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test splay_insert ... ok
[INFO] [stdout] test basic_delete ... ok
[INFO] [stdout] test splay_delete ... ok
[INFO] [stdout] test basic_insert ... ok
[INFO] [stdout] test treap_delete ... ok
[INFO] [stdout] test treap_insert ... ok
[INFO] [stdout] test avl_insert ... ok
[INFO] [stdout] test splay_and_treap_consistency ... ok
[INFO] [stdout] test splay_and_avl_consistency_noncommutative ... ok
[INFO] [stdout] test avl_delete ... ok
[INFO] [stdout] test treap_consistency ... ok
[INFO] [stdout] test splay_and_treap_consistency_noncommutative ... ok
[INFO] [stdout] test splay_and_avl_consistency ... ok
[INFO] [stderr]    Doc-tests grove
[INFO] [stdout] test treap_consistency_noncommutative ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.86s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test src/trees/macros.rs - trees::macros::derive_SomeWalker (line 3) ... FAILED
[INFO] [stdout] test src/trees/macros.rs - trees::macros::derive_SomeEntry (line 48) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 95) ... ok
[INFO] [stdout] test src/lib.rs - (line 65) ... ok
[INFO] [stdout] test src/trees/mod.rs - trees::SomeEntry::subtree_summary (line 313) ... ok
[INFO] [stdout] test src/trees/avl.rs - trees::avl::AVLTree<D>::concatenate_right (line 641) ... ok
[INFO] [stdout] test src/trees/splay.rs - trees::splay::SplayTree<D>::concatenate_right (line 526) ... ok
[INFO] [stdout] test src/trees/splay.rs - trees::splay::SplayWalker<'a,D>::split_right (line 573) ... ok
[INFO] [stdout] test src/trees/avl.rs - trees::avl::AVLWalker<'a,D>::split_right (line 490) ... ok
[INFO] [stdout] test src/trees/treap.rs - trees::treap::Treap<D>::concatenate_right (line 439) ... ok
[INFO] [stdout] test src/trees/avl.rs - trees::avl::concatenate_with_middle (line 665) ... ok
[INFO] [stdout] test src/trees/mod.rs - trees::SomeTree::iter_locator (line 88) ... ok
[INFO] [stdout] test src/trees/avl.rs - trees::avl::AVLTree<D>::concatenate_middle_left (line 599) ... ok
[INFO] [stdout] test src/trees/mod.rs - trees::SomeTree::iter (line 104) ... ok
[INFO] [stdout] test src/data/example_data.rs - data::example_data::poly_num::PolyNum<D>::shift (line 447) ... ok
[INFO] [stdout] test src/trees/avl.rs - trees::avl::AVLTree<D>::concatenate_middle_right (line 559) ... ok
[INFO] [stdout] test src/trees/avl.rs - trees::avl::AVLWalker<'a,D>::split_left (line 538) ... ok
[INFO] [stdout] test src/trees/basic_tree/mod.rs - trees::basic_tree::BasicNode<D,T>::act (line 274) ... ok
[INFO] [stdout] test src/trees/treap.rs - trees::treap::TreapWalker<'a,D>::split_left (line 539) ... ok
[INFO] [stdout] test src/trees/treap.rs - trees::treap::union (line 410) ... ok
[INFO] [stdout] test src/trees/treap.rs - trees::treap::TreapWalker<'a,D>::split_right (line 494) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/trees/macros.rs - trees::macros::derive_SomeWalker (line 3) stdout ----
[INFO] [stdout] error: cannot find macro `derive_SomeWalker` in this scope
[INFO] [stdout]  --> src/trees/macros.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | derive_SomeWalker!{walker,
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/trees/macros.rs - trees::macros::derive_SomeEntry (line 48) stdout ----
[INFO] [stdout] error: cannot find macro `derive_SomeEntry` in this scope
[INFO] [stdout]  --> src/trees/macros.rs:49:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | derive_SomeEntry!{walker,
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/trees/macros.rs - trees::macros::derive_SomeEntry (line 48)
[INFO] [stdout]     src/trees/macros.rs - trees::macros::derive_SomeWalker (line 3)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 19 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.35s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "6fe62c25b0dbd44352618aaaf8a57ecfe4e201d7514da1e4f79d4dc1ccb8bb20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fe62c25b0dbd44352618aaaf8a57ecfe4e201d7514da1e4f79d4dc1ccb8bb20", kill_on_drop: false }`
[INFO] [stdout] 6fe62c25b0dbd44352618aaaf8a57ecfe4e201d7514da1e4f79d4dc1ccb8bb20
