[INFO] cloning repository https://github.com/lukasvrenner/terees
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lukasvrenner/terees" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukasvrenner%2Fterees", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukasvrenner%2Fterees'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c7d4b655444f8e15604ad7e1822070ff8e360a4
[INFO] checking lukasvrenner/terees against try#b28cc4eb48a6415b914e8ad0308be255ff8d73ed for pr-156508
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flukasvrenner%2Fterees" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/lukasvrenner/terees
[INFO] finished tweaking git repo https://github.com/lukasvrenner/terees
[INFO] tweaked toml for git repo https://github.com/lukasvrenner/terees written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lukasvrenner/terees on toolchain b28cc4eb48a6415b914e8ad0308be255ff8d73ed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lukasvrenner/terees 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" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cec8adbdbeefa164d1ce45af894c5e953ca897f4fe83c23ca7a96aa57f580650
[INFO] running `Command { std: "docker" "start" "-a" "cec8adbdbeefa164d1ce45af894c5e953ca897f4fe83c23ca7a96aa57f580650", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cec8adbdbeefa164d1ce45af894c5e953ca897f4fe83c23ca7a96aa57f580650", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cec8adbdbeefa164d1ce45af894c5e953ca897f4fe83c23ca7a96aa57f580650", kill_on_drop: false }`
[INFO] [stdout] cec8adbdbeefa164d1ce45af894c5e953ca897f4fe83c23ca7a96aa57f580650
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe7f5fb51d44db8de4da76b9697c4f4bbe9ae0814c31411438c5e24a09048221
[INFO] running `Command { std: "docker" "start" "-a" "fe7f5fb51d44db8de4da76b9697c4f4bbe9ae0814c31411438c5e24a09048221", kill_on_drop: false }`
[INFO] [stderr]     Checking terees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/binary_search_tree/map.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `node::Node`
[INFO] [stdout]  --> src/binary_search_tree/set.rs:4:29
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::{map::BsTreeMap, node::Node};
[INFO] [stdout]   |                             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/binary_search_tree/map.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `node::Node`
[INFO] [stdout]  --> src/binary_search_tree/set.rs:4:29
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::{map::BsTreeMap, node::Node};
[INFO] [stdout]   |                             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/binary_search_tree/map.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn remove(&mut self, key: &K) -> bool {
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/binary_search_tree/node.rs:166:29
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn merge(&mut self, other: Node<K, V>) {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first_index`
[INFO] [stdout]   --> src/linked_list/node.rs:88:28
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn swap(&mut self, first_index: usize, second_index: usize) {
[INFO] [stdout]    |                            ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second_index`
[INFO] [stdout]   --> src/linked_list/node.rs:88:48
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn swap(&mut self, first_index: usize, second_index: usize) {
[INFO] [stdout]    |                                                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `size` and `root` are never read
[INFO] [stdout]  --> src/b_tree/map.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct BTreeMap<K, V>
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     size: usize,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 7 |     root: Option<Box<Node<K, V>>>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MIN` is never used
[INFO] [stdout]  --> src/b_tree/node.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const MIN: usize = CAPACITY / 2;
[INFO] [stdout]   |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `len`, `entries`, and `children` are never read
[INFO] [stdout]   --> src/b_tree/node.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Node<K, V>
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     len: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 11 |     entries: [Option<Entry<K, V>>; CAPACITY],
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 12 |     children: [Option<Box<Node<K, V>>>; MAX_CHILDREN],
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/binary_search_tree/map.rs:52:30
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn remove(&mut self, key: &K) -> bool {
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/binary_search_tree/node.rs:166:29
[INFO] [stdout]     |
[INFO] [stdout] 166 |     pub fn merge(&mut self, other: Node<K, V>) {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first_index`
[INFO] [stdout]   --> src/linked_list/node.rs:88:28
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn swap(&mut self, first_index: usize, second_index: usize) {
[INFO] [stdout]    |                            ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `second_index`
[INFO] [stdout]   --> src/linked_list/node.rs:88:48
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn swap(&mut self, first_index: usize, second_index: usize) {
[INFO] [stdout]    |                                                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_second_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `size` and `root` are never read
[INFO] [stdout]  --> src/b_tree/map.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct BTreeMap<K, V>
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     size: usize,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 7 |     root: Option<Box<Node<K, V>>>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MIN` is never used
[INFO] [stdout]  --> src/b_tree/node.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const MIN: usize = CAPACITY / 2;
[INFO] [stdout]   |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `len`, `entries`, and `children` are never read
[INFO] [stdout]   --> src/b_tree/node.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Node<K, V>
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     len: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 11 |     entries: [Option<Entry<K, V>>; CAPACITY],
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 12 |     children: [Option<Box<Node<K, V>>>; MAX_CHILDREN],
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "fe7f5fb51d44db8de4da76b9697c4f4bbe9ae0814c31411438c5e24a09048221", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe7f5fb51d44db8de4da76b9697c4f4bbe9ae0814c31411438c5e24a09048221", kill_on_drop: false }`
[INFO] [stdout] fe7f5fb51d44db8de4da76b9697c4f4bbe9ae0814c31411438c5e24a09048221
