[INFO] fetching crate ego-binary-tree 0.1.0...
[INFO] testing ego-binary-tree-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate ego-binary-tree 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate ego-binary-tree 0.1.0
[INFO] finished tweaking crates.io crate ego-binary-tree 0.1.0
[INFO] tweaked toml for crates.io crate ego-binary-tree 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ego-binary-tree 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] [stderr]       Adding ego-tree v0.6.3 (available: v0.10.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded ego-tree v0.6.3
[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] 14bea9b191031c309caa5616571b8f0b7107cbb15f5f48c5debc8b297ba7c8df
[INFO] running `Command { std: "docker" "start" "-a" "14bea9b191031c309caa5616571b8f0b7107cbb15f5f48c5debc8b297ba7c8df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14bea9b191031c309caa5616571b8f0b7107cbb15f5f48c5debc8b297ba7c8df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14bea9b191031c309caa5616571b8f0b7107cbb15f5f48c5debc8b297ba7c8df", kill_on_drop: false }`
[INFO] [stdout] 14bea9b191031c309caa5616571b8f0b7107cbb15f5f48c5debc8b297ba7c8df
[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] 9244998aba65bcf22cff9ede1df031feebb5f5f339bb0c412a346efc29f8e5ee
[INFO] running `Command { std: "docker" "start" "-a" "9244998aba65bcf22cff9ede1df031feebb5f5f339bb0c412a346efc29f8e5ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling ego-tree v0.6.3
[INFO] [stderr]    Compiling ego-binary-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn root(&self) -> BinaryNodeRef<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]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn root(&self) -> BinaryNodeRef<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn root_mut(&mut self) -> BinaryNodeMut<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] 24 |     pub fn root_mut(&mut self) -> BinaryNodeMut<'_, T> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:74:19
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn left_inner(&mut self) -> NodeMut<Option<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] 74 |     fn left_inner(&mut self) -> NodeMut<'_, Option<T>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:78:20
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn right_inner(&mut self) -> NodeMut<Option<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] 78 |     fn right_inner(&mut self) -> NodeMut<'_, Option<T>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn left(&mut self) -> Option<BinaryNodeMut<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] 83 |     pub fn left(&mut self) -> Option<BinaryNodeMut<'_, T>> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:93:18
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn right(&mut self) -> Option<BinaryNodeMut<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] 93 |     pub fn right(&mut self) -> Option<BinaryNodeMut<'_, T>> {
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/binary_tree.rs:108:22
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub fn set_right(&mut self, value: T) -> BinaryNodeMut<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] 108 |     pub fn set_right(&mut self, value: T) -> BinaryNodeMut<'_, T> {
[INFO] [stdout]     |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/binary_tree.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn set_left(&mut self, value: T) -> BinaryNodeMut<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] 120 |     pub fn set_left(&mut self, value: T) -> BinaryNodeMut<'_, T> {
[INFO] [stdout]     |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "9244998aba65bcf22cff9ede1df031feebb5f5f339bb0c412a346efc29f8e5ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9244998aba65bcf22cff9ede1df031feebb5f5f339bb0c412a346efc29f8e5ee", kill_on_drop: false }`
[INFO] [stdout] 9244998aba65bcf22cff9ede1df031feebb5f5f339bb0c412a346efc29f8e5ee
[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] dbec3626cc8cb2439e2b6589504c08d7e2fcc8527737575e365e8ce46a5a60bc
[INFO] running `Command { std: "docker" "start" "-a" "dbec3626cc8cb2439e2b6589504c08d7e2fcc8527737575e365e8ce46a5a60bc", kill_on_drop: false }`
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn root(&self) -> BinaryNodeRef<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]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn root(&self) -> BinaryNodeRef<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn root_mut(&mut self) -> BinaryNodeMut<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] 24 |     pub fn root_mut(&mut self) -> BinaryNodeMut<'_, T> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ego-binary-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:74:19
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn left_inner(&mut self) -> NodeMut<Option<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] 74 |     fn left_inner(&mut self) -> NodeMut<'_, Option<T>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:78:20
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn right_inner(&mut self) -> NodeMut<Option<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] 78 |     fn right_inner(&mut self) -> NodeMut<'_, Option<T>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn left(&mut self) -> Option<BinaryNodeMut<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] 83 |     pub fn left(&mut self) -> Option<BinaryNodeMut<'_, T>> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:93:18
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn right(&mut self) -> Option<BinaryNodeMut<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] 93 |     pub fn right(&mut self) -> Option<BinaryNodeMut<'_, T>> {
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/binary_tree.rs:108:22
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub fn set_right(&mut self, value: T) -> BinaryNodeMut<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] 108 |     pub fn set_right(&mut self, value: T) -> BinaryNodeMut<'_, T> {
[INFO] [stdout]     |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/binary_tree.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn set_left(&mut self, value: T) -> BinaryNodeMut<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] 120 |     pub fn set_left(&mut self, value: T) -> BinaryNodeMut<'_, T> {
[INFO] [stdout]     |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn root(&self) -> BinaryNodeRef<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]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn root(&self) -> BinaryNodeRef<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn root_mut(&mut self) -> BinaryNodeMut<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] 24 |     pub fn root_mut(&mut self) -> BinaryNodeMut<'_, T> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:74:19
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn left_inner(&mut self) -> NodeMut<Option<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] 74 |     fn left_inner(&mut self) -> NodeMut<'_, Option<T>> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:78:20
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn right_inner(&mut self) -> NodeMut<Option<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] 78 |     fn right_inner(&mut self) -> NodeMut<'_, Option<T>> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn left(&mut self) -> Option<BinaryNodeMut<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] 83 |     pub fn left(&mut self) -> Option<BinaryNodeMut<'_, T>> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/binary_tree.rs:93:18
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn right(&mut self) -> Option<BinaryNodeMut<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] 93 |     pub fn right(&mut self) -> Option<BinaryNodeMut<'_, T>> {
[INFO] [stdout]    |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/binary_tree.rs:108:22
[INFO] [stdout]     |
[INFO] [stdout] 108 |     pub fn set_right(&mut self, value: T) -> BinaryNodeMut<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] 108 |     pub fn set_right(&mut self, value: T) -> BinaryNodeMut<'_, T> {
[INFO] [stdout]     |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/binary_tree.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn set_left(&mut self, value: T) -> BinaryNodeMut<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] 120 |     pub fn set_left(&mut self, value: T) -> BinaryNodeMut<'_, T> {
[INFO] [stdout]     |                                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "dbec3626cc8cb2439e2b6589504c08d7e2fcc8527737575e365e8ce46a5a60bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbec3626cc8cb2439e2b6589504c08d7e2fcc8527737575e365e8ce46a5a60bc", kill_on_drop: false }`
[INFO] [stdout] dbec3626cc8cb2439e2b6589504c08d7e2fcc8527737575e365e8ce46a5a60bc
[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] 56599803cee80a67951e6051adf2f6f0f8bedfd011d65c2a61601e6778a60cbb
[INFO] running `Command { std: "docker" "start" "-a" "56599803cee80a67951e6051adf2f6f0f8bedfd011d65c2a61601e6778a60cbb", kill_on_drop: false }`
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/binary_tree.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn root(&self) -> BinaryNodeRef<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]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn root(&self) -> BinaryNodeRef<'_, T> {
[INFO] [stderr]    |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/binary_tree.rs:24:21
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn root_mut(&mut self) -> BinaryNodeMut<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] 24 |     pub fn root_mut(&mut self) -> BinaryNodeMut<'_, T> {
[INFO] [stderr]    |                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/binary_tree.rs:74:19
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn left_inner(&mut self) -> NodeMut<Option<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] 74 |     fn left_inner(&mut self) -> NodeMut<'_, Option<T>> {
[INFO] [stderr]    |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/binary_tree.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn right_inner(&mut self) -> NodeMut<Option<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] 78 |     fn right_inner(&mut self) -> NodeMut<'_, Option<T>> {
[INFO] [stderr]    |                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/binary_tree.rs:83:17
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn left(&mut self) -> Option<BinaryNodeMut<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] 83 |     pub fn left(&mut self) -> Option<BinaryNodeMut<'_, T>> {
[INFO] [stderr]    |                                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/binary_tree.rs:93:18
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub fn right(&mut self) -> Option<BinaryNodeMut<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] 93 |     pub fn right(&mut self) -> Option<BinaryNodeMut<'_, T>> {
[INFO] [stderr]    |                                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/binary_tree.rs:108:22
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn set_right(&mut self, value: T) -> BinaryNodeMut<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] 108 |     pub fn set_right(&mut self, value: T) -> BinaryNodeMut<'_, T> {
[INFO] [stderr]     |                                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/binary_tree.rs:120:21
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn set_left(&mut self, value: T) -> BinaryNodeMut<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] 120 |     pub fn set_left(&mut self, value: T) -> BinaryNodeMut<'_, T> {
[INFO] [stderr]     |                                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: `ego-binary-tree` (lib) generated 8 warnings
[INFO] [stderr] warning: `ego-binary-tree` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ego_binary_tree-e6b414dba241f76a)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test macros::tests::macro_root_works ... ok
[INFO] [stdout] test binary_tree::tests::binary_tree_api_works ... ok
[INFO] [stdout] test macros::tests::complicated_tree_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ego_binary_tree
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/macros.rs - macros::binary_tree (line 12) ... ok
[INFO] [stdout] test src/macros.rs - macros::binary_tree (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.97s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "56599803cee80a67951e6051adf2f6f0f8bedfd011d65c2a61601e6778a60cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56599803cee80a67951e6051adf2f6f0f8bedfd011d65c2a61601e6778a60cbb", kill_on_drop: false }`
[INFO] [stdout] 56599803cee80a67951e6051adf2f6f0f8bedfd011d65c2a61601e6778a60cbb
