[INFO] cloning repository https://github.com/sdttttt/RBTree-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdttttt/RBTree-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdttttt%2FRBTree-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdttttt%2FRBTree-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca02c1d8b84f8c3c6e3f70a65bbfc6ee81e7be2e
[INFO] checking sdttttt/RBTree-Rust against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdttttt%2FRBTree-Rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdttttt/RBTree-Rust on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sdttttt/RBTree-Rust
[INFO] finished tweaking git repo https://github.com/sdttttt/RBTree-Rust
[INFO] tweaked toml for git repo https://github.com/sdttttt/RBTree-Rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sdttttt/RBTree-Rust 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4555c12d6eee9095645ffa208d36929699405298c7839c522bd22cf49f8b341
[INFO] running `Command { std: "docker" "start" "-a" "e4555c12d6eee9095645ffa208d36929699405298c7839c522bd22cf49f8b341", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4555c12d6eee9095645ffa208d36929699405298c7839c522bd22cf49f8b341", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4555c12d6eee9095645ffa208d36929699405298c7839c522bd22cf49f8b341", kill_on_drop: false }`
[INFO] [stdout] e4555c12d6eee9095645ffa208d36929699405298c7839c522bd22cf49f8b341
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28afb2a61bd7c1c94db52b847eb72f75704341f56ff301707115da08fc7f9751
[INFO] running `Command { std: "docker" "start" "-a" "28afb2a61bd7c1c94db52b847eb72f75704341f56ff301707115da08fc7f9751", kill_on_drop: false }`
[INFO] [stderr]     Checking red-black-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `node_p` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut node_p: SchrodingerNode<K, V>;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_node_p` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `node_p` is never read
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             node_p = node.clone();
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/main.rs:41:26
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn insert(&self,k:K, v: V) {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `node_p` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut node_p: SchrodingerNode<K, V>;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_node_p` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `node_p` is never read
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             node_p = node.clone();
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/main.rs:41:26
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn insert(&self,k:K, v: V) {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut node: SchrodingerNode<K, V>;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut node: SchrodingerNode<K, V>;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_node`
[INFO] [stdout]    --> src/main.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let new_node = Some(Box::new(Node::new(key, value)));
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_node`
[INFO] [stdout]    --> src/main.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let new_node = Some(Box::new(Node::new(key, value)));
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SchrodingerNode` is never used
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type SchrodingerNode<K, V> = Option<Rc<RefCell<Node<K, V>>>>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> src/main.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Tree<K, V> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Node<K, V> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `RedBlackTreeNode` is never used
[INFO] [stdout]   --> src/main.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait RedBlackTreeNode<K: PartialOrd, V> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `insert` are never used
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | / impl<K, V> Tree<K, V>
[INFO] [stdout] 33 | | where
[INFO] [stdout] 34 | |     K: PartialOrd,
[INFO] [stdout] 35 | |     V: Display,
[INFO] [stdout]    | |_______________- associated items in this implementation
[INFO] [stdout] 36 |   {
[INFO] [stdout] 37 |       fn new() -> Tree<K, V> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |       fn insert(&self,k:K, v: V) {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SchrodingerNode` is never used
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type SchrodingerNode<K, V> = Option<Rc<RefCell<Node<K, V>>>>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> src/main.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Tree<K, V> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `is_root`, `is_left`, and `is_right` are never used
[INFO] [stdout]   --> src/main.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | / impl<K, V> Node<K, V>
[INFO] [stdout] 55 | | where
[INFO] [stdout] 56 | |     K: PartialOrd,
[INFO] [stdout] 57 | |     V: Display,
[INFO] [stdout]    | |_______________- associated items in this implementation
[INFO] [stdout] 58 |   {
[INFO] [stdout] 59 |       fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |       fn is_root(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |       fn is_left(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |       fn is_right(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Node<K, V> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `RedBlackTreeNode` is never used
[INFO] [stdout]   --> src/main.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait RedBlackTreeNode<K: PartialOrd, V> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `insert` are never used
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | / impl<K, V> Tree<K, V>
[INFO] [stdout] 33 | | where
[INFO] [stdout] 34 | |     K: PartialOrd,
[INFO] [stdout] 35 | |     V: Display,
[INFO] [stdout]    | |_______________- associated items in this implementation
[INFO] [stdout] 36 |   {
[INFO] [stdout] 37 |       fn new() -> Tree<K, V> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |       fn insert(&self,k:K, v: V) {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `is_root`, `is_left`, and `is_right` are never used
[INFO] [stdout]   --> src/main.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | / impl<K, V> Node<K, V>
[INFO] [stdout] 55 | | where
[INFO] [stdout] 56 | |     K: PartialOrd,
[INFO] [stdout] 57 | |     V: Display,
[INFO] [stdout]    | |_______________- associated items in this implementation
[INFO] [stdout] 58 |   {
[INFO] [stdout] 59 |       fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |       fn is_root(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |       fn is_left(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |       fn is_right(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "28afb2a61bd7c1c94db52b847eb72f75704341f56ff301707115da08fc7f9751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28afb2a61bd7c1c94db52b847eb72f75704341f56ff301707115da08fc7f9751", kill_on_drop: false }`
[INFO] [stdout] 28afb2a61bd7c1c94db52b847eb72f75704341f56ff301707115da08fc7f9751
[INFO] checking sdttttt/RBTree-Rust against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdttttt%2FRBTree-Rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdttttt/RBTree-Rust on toolchain f9935d29d867449445ee008640ccca1bf1ae0889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sdttttt/RBTree-Rust
[INFO] finished tweaking git repo https://github.com/sdttttt/RBTree-Rust
[INFO] tweaked toml for git repo https://github.com/sdttttt/RBTree-Rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sdttttt/RBTree-Rust 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4da07d5724df603c05a07575fa47fdc757edc0cba1481aae7110328b18f2fb47
[INFO] running `Command { std: "docker" "start" "-a" "4da07d5724df603c05a07575fa47fdc757edc0cba1481aae7110328b18f2fb47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4da07d5724df603c05a07575fa47fdc757edc0cba1481aae7110328b18f2fb47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4da07d5724df603c05a07575fa47fdc757edc0cba1481aae7110328b18f2fb47", kill_on_drop: false }`
[INFO] [stdout] 4da07d5724df603c05a07575fa47fdc757edc0cba1481aae7110328b18f2fb47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e0d212c38898893407ce6888ad19538fb49962ac2207afc0dd0d24f9a6ce6eb
[INFO] running `Command { std: "docker" "start" "-a" "1e0d212c38898893407ce6888ad19538fb49962ac2207afc0dd0d24f9a6ce6eb", kill_on_drop: false }`
[INFO] [stderr]     Checking red-black-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `node_p` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut node_p: SchrodingerNode<K, V>;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_node_p` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `node_p` is never read
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             node_p = node.clone();
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/main.rs:41:26
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn insert(&self,k:K, v: V) {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `node_p` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut node_p: SchrodingerNode<K, V>;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_node_p` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `node_p` is never read
[INFO] [stdout]   --> src/main.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             node_p = node.clone();
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/main.rs:41:26
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn insert(&self,k:K, v: V) {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut node: SchrodingerNode<K, V>;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut node: SchrodingerNode<K, V>;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_node`
[INFO] [stdout]    --> src/main.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let new_node = Some(Box::new(Node::new(key, value)));
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `new_node`
[INFO] [stdout]    --> src/main.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let new_node = Some(Box::new(Node::new(key, value)));
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SchrodingerNode` is never used
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type SchrodingerNode<K, V> = Option<Rc<RefCell<Node<K, V>>>>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> src/main.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Tree<K, V> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Node<K, V> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `RedBlackTreeNode` is never used
[INFO] [stdout]   --> src/main.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait RedBlackTreeNode<K: PartialOrd, V> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SchrodingerNode` is never used
[INFO] [stdout]  --> src/main.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | type SchrodingerNode<K, V> = Option<Rc<RefCell<Node<K, V>>>>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]  --> src/main.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Color {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `insert` are never used
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | / impl<K, V> Tree<K, V>
[INFO] [stdout] 33 | | where
[INFO] [stdout] 34 | |     K: PartialOrd,
[INFO] [stdout] 35 | |     V: Display,
[INFO] [stdout]    | |_______________- associated items in this implementation
[INFO] [stdout] 36 |   {
[INFO] [stdout] 37 |       fn new() -> Tree<K, V> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |       fn insert(&self,k:K, v: V) {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tree` is never constructed
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Tree<K, V> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Node<K, V> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `is_root`, `is_left`, and `is_right` are never used
[INFO] [stdout]   --> src/main.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | / impl<K, V> Node<K, V>
[INFO] [stdout] 55 | | where
[INFO] [stdout] 56 | |     K: PartialOrd,
[INFO] [stdout] 57 | |     V: Display,
[INFO] [stdout]    | |_______________- associated items in this implementation
[INFO] [stdout] 58 |   {
[INFO] [stdout] 59 |       fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |       fn is_root(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |       fn is_left(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |       fn is_right(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `RedBlackTreeNode` is never used
[INFO] [stdout]   --> src/main.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | trait RedBlackTreeNode<K: PartialOrd, V> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `insert` are never used
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | / impl<K, V> Tree<K, V>
[INFO] [stdout] 33 | | where
[INFO] [stdout] 34 | |     K: PartialOrd,
[INFO] [stdout] 35 | |     V: Display,
[INFO] [stdout]    | |_______________- associated items in this implementation
[INFO] [stdout] 36 |   {
[INFO] [stdout] 37 |       fn new() -> Tree<K, V> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |       fn insert(&self,k:K, v: V) {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/main.rs:64:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |            ----  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |            |
[INFO] [stdout]    |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 64 |             left: None,
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `is_root`, `is_left`, and `is_right` are never used
[INFO] [stdout]   --> src/main.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | / impl<K, V> Node<K, V>
[INFO] [stdout] 55 | | where
[INFO] [stdout] 56 | |     K: PartialOrd,
[INFO] [stdout] 57 | |     V: Display,
[INFO] [stdout]    | |_______________- associated items in this implementation
[INFO] [stdout] 58 |   {
[INFO] [stdout] 59 |       fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |       fn is_root(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |       fn is_left(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 |       fn is_right(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/main.rs:65:20
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |            ----  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |            |
[INFO] [stdout]    |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 65 |             right: None,
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/main.rs:64:19
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |            ----  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |            |
[INFO] [stdout]    |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 64 |             left: None,
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/main.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |            ----  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |            |
[INFO] [stdout]    |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 66 |             parent: None,
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/main.rs:65:20
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |            ----  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |            |
[INFO] [stdout]    |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 65 |             right: None,
[INFO] [stdout]    |                    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/main.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn new(k: K, v: V) -> Node<K, V> {
[INFO] [stdout]    |            ----  ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout]    |            |
[INFO] [stdout]    |            these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] ...
[INFO] [stdout] 66 |             parent: None,
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `red-black-tree` (bin "red-black-tree") due to 4 previous errors; 12 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `red-black-tree` (bin "red-black-tree" test) due to 4 previous errors; 12 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1e0d212c38898893407ce6888ad19538fb49962ac2207afc0dd0d24f9a6ce6eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e0d212c38898893407ce6888ad19538fb49962ac2207afc0dd0d24f9a6ce6eb", kill_on_drop: false }`
[INFO] [stdout] 1e0d212c38898893407ce6888ad19538fb49962ac2207afc0dd0d24f9a6ce6eb