[INFO] cloning repository https://github.com/peroxides-io/safe-rust-avl-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peroxides-io/safe-rust-avl-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperoxides-io%2Fsafe-rust-avl-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperoxides-io%2Fsafe-rust-avl-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12db7d4880c238c56b5adf39f269bf5266f8befd
[INFO] checking peroxides-io/safe-rust-avl-tree against try#39605810efb1a0d52f955bfba9e4eec7a01d5deb for pr-153692
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperoxides-io%2Fsafe-rust-avl-tree" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/peroxides-io/safe-rust-avl-tree
[INFO] finished tweaking git repo https://github.com/peroxides-io/safe-rust-avl-tree
[INFO] tweaked toml for git repo https://github.com/peroxides-io/safe-rust-avl-tree written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/peroxides-io/safe-rust-avl-tree on toolchain 39605810efb1a0d52f955bfba9e4eec7a01d5deb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/peroxides-io/safe-rust-avl-tree 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" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbb27d7bba5a0653d25df176fa77cd42f9ba78dc23be1ee93a3a9a76f22a8f91
[INFO] running `Command { std: "docker" "start" "-a" "fbb27d7bba5a0653d25df176fa77cd42f9ba78dc23be1ee93a3a9a76f22a8f91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbb27d7bba5a0653d25df176fa77cd42f9ba78dc23be1ee93a3a9a76f22a8f91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbb27d7bba5a0653d25df176fa77cd42f9ba78dc23be1ee93a3a9a76f22a8f91", kill_on_drop: false }`
[INFO] [stdout] fbb27d7bba5a0653d25df176fa77cd42f9ba78dc23be1ee93a3a9a76f22a8f91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+39605810efb1a0d52f955bfba9e4eec7a01d5deb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 772dc95d6461894c59ffc642d21d5ca12687a924aaa629e6b5625a569169b82b
[INFO] running `Command { std: "docker" "start" "-a" "772dc95d6461894c59ffc642d21d5ca12687a924aaa629e6b5625a569169b82b", kill_on_drop: false }`
[INFO] [stderr]     Checking avl-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/avl.rs:31:23
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn contains(self: &ChildNode<T>, value: &T) -> bool {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout]    = note: `#[deny(self_lifetime_elision_not_applicable)]` (part of `#[deny(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/avl.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn insert_balanced(self: &mut ChildNode<T>, new_value: T) -> bool {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/avl.rs:80:34
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn delete_balanced(self: &mut ChildNode<T>, value: &T) -> bool {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:129:28
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn is_imbalanced(self: &ChildNode<T>) -> bool {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn left_heavy(self: &ChildNode<T>) -> bool {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:151:26
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn right_heavy(self: &ChildNode<T>) -> bool {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:162:25
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn get_height(self: &ChildNode<T>) -> i32 {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:169:27
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn get_left<'a>(self: &'a mut ChildNode<T>) -> &'a mut ChildNode<T> {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:176:28
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn get_right<'a>(self: &'a mut ChildNode<T>) -> &'a mut ChildNode<T> {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:183:28
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn update_height(self: &mut ChildNode<T>) {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:197:26
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn rotate_left(self: &mut ChildNode<T>) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:208:27
[INFO] [stdout]     |
[INFO] [stdout] 208 |     fn rotate_right(self: &mut ChildNode<T>) {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:219:39
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn take_smallest_in_subtree(self: &mut ChildNode<T>) -> ChildNode<T> {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:241:24
[INFO] [stdout]     |
[INFO] [stdout] 241 |     fn rebalance(self: &mut ChildNode<T>) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/avl.rs:31:23
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn contains(self: &ChildNode<T>, value: &T) -> bool {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout]    = note: `#[deny(self_lifetime_elision_not_applicable)]` (part of `#[deny(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/avl.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn insert_balanced(self: &mut ChildNode<T>, new_value: T) -> bool {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]   --> src/avl.rs:80:34
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn delete_balanced(self: &mut ChildNode<T>, value: &T) -> bool {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:129:28
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn is_imbalanced(self: &ChildNode<T>) -> bool {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn left_heavy(self: &ChildNode<T>) -> bool {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:151:26
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn right_heavy(self: &ChildNode<T>) -> bool {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:162:25
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn get_height(self: &ChildNode<T>) -> i32 {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:169:27
[INFO] [stdout]     |
[INFO] [stdout] 169 |     fn get_left<'a>(self: &'a mut ChildNode<T>) -> &'a mut ChildNode<T> {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:176:28
[INFO] [stdout]     |
[INFO] [stdout] 176 |     fn get_right<'a>(self: &'a mut ChildNode<T>) -> &'a mut ChildNode<T> {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:183:28
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn update_height(self: &mut ChildNode<T>) {
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:197:26
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn rotate_left(self: &mut ChildNode<T>) {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:208:27
[INFO] [stdout]     |
[INFO] [stdout] 208 |     fn rotate_right(self: &mut ChildNode<T>) {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:219:39
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn take_smallest_in_subtree(self: &mut ChildNode<T>) -> ChildNode<T> {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `self` parameter type does not contain `Self`
[INFO] [stdout]    --> src/avl.rs:241:24
[INFO] [stdout]     |
[INFO] [stdout] 241 |     fn rebalance(self: &mut ChildNode<T>) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `&self`, `&mut self`, or `self: &Self` for correct lifetime elision
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #140611 <https://github.com/rust-lang/rust/issues/140611>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `avl-tree` (bin "avl-tree" test) due to 14 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `avl-tree` (bin "avl-tree") due to 14 previous errors
[INFO] running `Command { std: "docker" "inspect" "772dc95d6461894c59ffc642d21d5ca12687a924aaa629e6b5625a569169b82b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "772dc95d6461894c59ffc642d21d5ca12687a924aaa629e6b5625a569169b82b", kill_on_drop: false }`
[INFO] [stdout] 772dc95d6461894c59ffc642d21d5ca12687a924aaa629e6b5625a569169b82b