[INFO] cloning repository https://github.com/sh0623k/coding_interview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sh0623k/coding_interview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsh0623k%2Fcoding_interview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsh0623k%2Fcoding_interview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad2a675ba51f91fb104e2272a58badfd5bfa77bc
[INFO] testing sh0623k/coding_interview against beta-2025-04-13 for beta-1.87-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsh0623k%2Fcoding_interview" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sh0623k/coding_interview on toolchain beta-2025-04-13
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-04-13" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sh0623k/coding_interview
[INFO] finished tweaking git repo https://github.com/sh0623k/coding_interview
[INFO] tweaked toml for git repo https://github.com/sh0623k/coding_interview written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sh0623k/coding_interview 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" "+beta-2025-04-13" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d86cb4651b031d0075fb2aae81af1bd3092d276a82c1a737587ed96b2bb4f2d
[INFO] running `Command { std: "docker" "start" "-a" "9d86cb4651b031d0075fb2aae81af1bd3092d276a82c1a737587ed96b2bb4f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d86cb4651b031d0075fb2aae81af1bd3092d276a82c1a737587ed96b2bb4f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d86cb4651b031d0075fb2aae81af1bd3092d276a82c1a737587ed96b2bb4f2d", kill_on_drop: false }`
[INFO] [stdout] 9d86cb4651b031d0075fb2aae81af1bd3092d276a82c1a737587ed96b2bb4f2d
[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=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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb1e8af083fabe3f5ef78bb2486a8f541926a1c6701a456e365cad8ed298520d
[INFO] running `Command { std: "docker" "start" "-a" "eb1e8af083fabe3f5ef78bb2486a8f541926a1c6701a456e365cad8ed298520d", kill_on_drop: false }`
[INFO] [stderr]    Compiling coding_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/linked_list.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 &node.borrow_mut().remove();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let _ = &node.borrow_mut().remove();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/ch04p02.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut mbst = MinimalBinarySearchTree::<i32>::new(&arr);
[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/bin/ch07p01.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let mut value = 0;
[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/bin/ch07p01.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let mut score = 0;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `card`
[INFO] [stdout]    --> src/bin/ch07p01.rs:112:28
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn add_card(&mut self, card: BlackJackCard) {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_card`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/ch07p01.rs:136:13
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let mut hand: Vec<BlackJackCard> = vec![];
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Card` is never used
[INFO] [stdout]   --> src/bin/ch07p01.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 | trait Card {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Deck` is never used
[INFO] [stdout]   --> src/bin/ch07p01.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | trait Deck<C: Card> {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hand` is never used
[INFO] [stdout]   --> src/bin/ch07p01.rs:63:7
[INFO] [stdout]    |
[INFO] [stdout] 63 | trait Hand<C: Card> {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `suit`, `rank`, and `available` are never read
[INFO] [stdout]   --> src/bin/ch07p01.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct BlackJackCard {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 71 |     suit: Suit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 72 |     rank: Rank,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 73 |     available: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BlackJackCard` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BlackJackHand` is never constructed
[INFO] [stdout]   --> src/bin/ch07p01.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | struct BlackJackHand {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BlackJackDeck` is never constructed
[INFO] [stdout]    --> src/bin/ch07p01.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | struct BlackJackDeck {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/bin/ch02p03.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             &node.borrow_mut().remove();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |             let _ = &node.borrow_mut().remove();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `complete_call` and `escalate` are never used
[INFO] [stdout]   --> src/bin/ch07p02.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | trait Employee {
[INFO] [stdout]    |       -------- methods in this trait
[INFO] [stdout] 28 |     fn receive_call(&mut self, call: &Call);
[INFO] [stdout] 29 |     fn complete_call(&mut self, call: &mut Call);
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 30 |     fn escalate(&mut self, call: &mut Call);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `completed` is never read
[INFO] [stdout]   --> src/bin/ch07p02.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Call {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 37 |     rank: Rank,
[INFO] [stdout] 38 |     completed: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Call` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `Command { std: "docker" "inspect" "eb1e8af083fabe3f5ef78bb2486a8f541926a1c6701a456e365cad8ed298520d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb1e8af083fabe3f5ef78bb2486a8f541926a1c6701a456e365cad8ed298520d", kill_on_drop: false }`
[INFO] [stdout] eb1e8af083fabe3f5ef78bb2486a8f541926a1c6701a456e365cad8ed298520d
[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=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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d977ea45aebf0dd00949af56364e8ad6670b6346ebbb96db2372150ef15ca2b9
[INFO] running `Command { std: "docker" "start" "-a" "d977ea45aebf0dd00949af56364e8ad6670b6346ebbb96db2372150ef15ca2b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling coding_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/linked_list.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 &node.borrow_mut().remove();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let _ = &node.borrow_mut().remove();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/ch04p02.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut mbst = MinimalBinarySearchTree::<i32>::new(&arr);
[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: methods `complete_call` and `escalate` are never used
[INFO] [stdout]   --> src/bin/ch07p02.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | trait Employee {
[INFO] [stdout]    |       -------- methods in this trait
[INFO] [stdout] 28 |     fn receive_call(&mut self, call: &Call);
[INFO] [stdout] 29 |     fn complete_call(&mut self, call: &mut Call);
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 30 |     fn escalate(&mut self, call: &mut Call);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `completed` is never read
[INFO] [stdout]   --> src/bin/ch07p02.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | struct Call {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 37 |     rank: Rank,
[INFO] [stdout] 38 |     completed: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Call` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/ch07p01.rs:91:13
[INFO] [stdout]    |
[INFO] [stdout] 91 |         let mut value = 0;
[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/bin/ch07p01.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let mut score = 0;
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `card`
[INFO] [stdout]    --> src/bin/ch07p01.rs:112:28
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn add_card(&mut self, card: BlackJackCard) {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_card`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/bin/ch02p03.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             &node.borrow_mut().remove();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |             let _ = &node.borrow_mut().remove();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/ch07p01.rs:136:13
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let mut hand: Vec<BlackJackCard> = vec![];
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Card` is never used
[INFO] [stdout]   --> src/bin/ch07p01.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 | trait Card {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Deck` is never used
[INFO] [stdout]   --> src/bin/ch07p01.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | trait Deck<C: Card> {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hand` is never used
[INFO] [stdout]   --> src/bin/ch07p01.rs:63:7
[INFO] [stdout]    |
[INFO] [stdout] 63 | trait Hand<C: Card> {
[INFO] [stdout]    |       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `suit`, `rank`, and `available` are never read
[INFO] [stdout]   --> src/bin/ch07p01.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct BlackJackCard {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 71 |     suit: Suit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 72 |     rank: Rank,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 73 |     available: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BlackJackCard` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BlackJackHand` is never constructed
[INFO] [stdout]   --> src/bin/ch07p01.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | struct BlackJackHand {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BlackJackDeck` is never constructed
[INFO] [stdout]    --> src/bin/ch07p01.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | struct BlackJackDeck {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/linked_list.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 &node.borrow_mut().remove();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let _ = &node.borrow_mut().remove();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/linked_list.rs:405:17
[INFO] [stdout]     |
[INFO] [stdout] 405 |                 &node.borrow_mut().remove();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 405 |                 let _ = &node.borrow_mut().remove();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "d977ea45aebf0dd00949af56364e8ad6670b6346ebbb96db2372150ef15ca2b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d977ea45aebf0dd00949af56364e8ad6670b6346ebbb96db2372150ef15ca2b9", kill_on_drop: false }`
[INFO] [stdout] d977ea45aebf0dd00949af56364e8ad6670b6346ebbb96db2372150ef15ca2b9
[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=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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 571678e51aaabdc5deaaace1cef8eeaa192391dc918444752a005710782e4603
[INFO] running `Command { std: "docker" "start" "-a" "571678e51aaabdc5deaaace1cef8eeaa192391dc918444752a005710782e4603", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/linked_list.rs:147:17
[INFO] [stderr]     |
[INFO] [stderr] 147 |                 &node.borrow_mut().remove();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 147 |                 let _ = &node.borrow_mut().remove();
[INFO] [stderr]     |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `coding_interview` (lib) generated 1 warning
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/ch04p02.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut mbst = MinimalBinarySearchTree::<i32>::new(&arr);
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `coding_interview` (bin "ch04p02" test) generated 1 warning (run `cargo fix --bin "ch04p02" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/ch07p01.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |         let mut value = 0;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/ch07p01.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |         let mut score = 0;
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `card`
[INFO] [stderr]    --> src/bin/ch07p01.rs:112:28
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn add_card(&mut self, card: BlackJackCard) {
[INFO] [stderr]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_card`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/ch07p01.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |         let mut hand: Vec<BlackJackCard> = vec![];
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Card` is never used
[INFO] [stderr]   --> src/bin/ch07p01.rs:50:7
[INFO] [stderr]    |
[INFO] [stderr] 50 | trait Card {
[INFO] [stderr]    |       ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Deck` is never used
[INFO] [stderr]   --> src/bin/ch07p01.rs:55:7
[INFO] [stderr]    |
[INFO] [stderr] 55 | trait Deck<C: Card> {
[INFO] [stderr]    |       ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Hand` is never used
[INFO] [stderr]   --> src/bin/ch07p01.rs:63:7
[INFO] [stderr]    |
[INFO] [stderr] 63 | trait Hand<C: Card> {
[INFO] [stderr]    |       ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `suit`, `rank`, and `available` are never read
[INFO] [stderr]   --> src/bin/ch07p01.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct BlackJackCard {
[INFO] [stderr]    |        ------------- fields in this struct
[INFO] [stderr] 71 |     suit: Suit,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 72 |     rank: Rank,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 73 |     available: bool,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `BlackJackCard` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: struct `BlackJackHand` is never constructed
[INFO] [stderr]   --> src/bin/ch07p01.rs:97:8
[INFO] [stderr]    |
[INFO] [stderr] 97 | struct BlackJackHand {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `BlackJackDeck` is never constructed
[INFO] [stderr]    --> src/bin/ch07p01.rs:117:8
[INFO] [stderr]     |
[INFO] [stderr] 117 | struct BlackJackDeck {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `complete_call` and `escalate` are never used
[INFO] [stderr]   --> src/bin/ch07p02.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | trait Employee {
[INFO] [stderr]    |       -------- methods in this trait
[INFO] [stderr] 28 |     fn receive_call(&mut self, call: &Call);
[INFO] [stderr] 29 |     fn complete_call(&mut self, call: &mut Call);
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 30 |     fn escalate(&mut self, call: &mut Call);
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `completed` is never read
[INFO] [stderr]   --> src/bin/ch07p02.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 36 | struct Call {
[INFO] [stderr]    |        ---- field in this struct
[INFO] [stderr] 37 |     rank: Rank,
[INFO] [stderr] 38 |     completed: bool,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Call` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `coding_interview` (bin "ch07p01" test) generated 10 warnings (run `cargo fix --bin "ch07p01" --tests` to apply 3 suggestions)
[INFO] [stderr] warning: `coding_interview` (bin "ch07p02" test) generated 2 warnings
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/bin/ch02p03.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |             &node.borrow_mut().remove();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 19 |             let _ = &node.borrow_mut().remove();
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/linked_list.rs:405:17
[INFO] [stderr]     |
[INFO] [stderr] 405 |                 &node.borrow_mut().remove();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 405 |                 let _ = &node.borrow_mut().remove();
[INFO] [stderr]     |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `coding_interview` (bin "ch02p03" test) generated 1 warning
[INFO] [stderr] warning: `coding_interview` (lib test) generated 2 warnings (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/coding_interview-db802688768fda1d)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test graph::tests::test_dp_shortest_path_len ... ok
[INFO] [stdout] test graph::tests::test_has_a_walk ... ok
[INFO] [stdout] test linked_list::tests::test_get_kth_to_last_element ... ok
[INFO] [stdout] test linked_list::tests::test_list_has_duplicates ... ok
[INFO] [stdout] test linked_list::tests::test_list_remove_duplicates ... ok
[INFO] [stdout] test linked_list::tests::test_partition ... ok
[INFO] [stdout] test linked_list::tests::test_remove_node ... ok
[INFO] [stdout] test queue::tests::test_my_queue ... ok
[INFO] [stdout] test queue::tests::test_iterator ... ok
[INFO] [stdout] test stack::tests::test_stack ... ok
[INFO] [stdout] test stack::tests::test_set_of_stacks ... ok
[INFO] [stdout] test str_helper::tests::test_get_next_char_boundary ... ok
[INFO] [stdout] test str_helper::tests::test_create_char_count_map_from_str ... ok
[INFO] [stdout] test tree::tests::test_minimal_tree ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch01p01.rs (/opt/rustwide/target/debug/deps/ch01p01-12f4d6f27bb7e4c0)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_is_all_chars_unique ... ok
[INFO] [stdout] test tests::test_is_all_chars_unique_with_sorted_str ... ok
[INFO] [stdout] test tests::test_is_all_chars_unique_without_add_data_structure ... ok
[INFO] [stdout] test tests::test_range - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch01p02.rs (/opt/rustwide/target/debug/deps/ch01p02-ab48676c1721f484)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_are_two_strs_in_the_same_combination ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch01p03.rs (/opt/rustwide/target/debug/deps/ch01p03-7fd440285cad32c8)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_urlify ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch01p04.rs (/opt/rustwide/target/debug/deps/ch01p04-daac62f14cf301b0)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_is_palindrome ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch01p05.rs (/opt/rustwide/target/debug/deps/ch01p05-d653d6e264f22d97)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_is_convertible_by_once_brute ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch01p06.rs (/opt/rustwide/target/debug/deps/ch01p06-c6378f02348ba209)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_str_compression ... ok
[INFO] [stdout] test tests::test_str_compression_with_fold ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch01p07.rs (/opt/rustwide/target/debug/deps/ch01p07-a1c4a309a6151366)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_matrix_rotation ... ok
[INFO] [stdout] test tests::test_matrix_rotation_with_flatten_vec ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch01p08.rs (/opt/rustwide/target/debug/deps/ch01p08-bf893019031457ea)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_set_zero_when_the_line_has_zero ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch01p09.rs (/opt/rustwide/target/debug/deps/ch01p09-25bd9b2cf976fba0)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_is_strs_rotation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p01.rs (/opt/rustwide/target/debug/deps/ch02p01-e014e6075faf83ec)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p02.rs (/opt/rustwide/target/debug/deps/ch02p02-5100984b5882f257)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p03.rs (/opt/rustwide/target/debug/deps/ch02p03-f782ca6e65bc0eb5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p04.rs (/opt/rustwide/target/debug/deps/ch02p04-651a0a835bea0d36)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p05.rs (/opt/rustwide/target/debug/deps/ch02p05-6eb102abc898b0c5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_sum_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p06.rs (/opt/rustwide/target/debug/deps/ch02p06-d8a3bcfe198a3a85)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_is_palindrome ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p07.rs (/opt/rustwide/target/debug/deps/ch02p07-ec8f8fe30fe44a3e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p08.rs (/opt/rustwide/target/debug/deps/ch02p08-639943e2c657c55a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch03p02.rs (/opt/rustwide/target/debug/deps/ch03p02-58e3f4a2abc561d4)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_stack_with_min ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch03p04.rs (/opt/rustwide/target/debug/deps/ch03p04-61ed67284b2203aa)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch03p05.rs (/opt/rustwide/target/debug/deps/ch03p05-b33b838b8108b611)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch03p06.rs (/opt/rustwide/target/debug/deps/ch03p06-65e2ac451e4ae38e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch04p02.rs (/opt/rustwide/target/debug/deps/ch04p02-46f7b7b1eef85f59)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch04p03.rs (/opt/rustwide/target/debug/deps/ch04p03-f8fbf2b1c70ad980)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch04p04.rs (/opt/rustwide/target/debug/deps/ch04p04-aefdbbfe1fe47331)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch04p05.rs (/opt/rustwide/target/debug/deps/ch04p05-59bf849ec572446a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch04p06.rs (/opt/rustwide/target/debug/deps/ch04p06-fc6b02cb6f45d732)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch04p11.rs (/opt/rustwide/target/debug/deps/ch04p11-5131bceb1fd0000e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch04p12.rs (/opt/rustwide/target/debug/deps/ch04p12-64f307a2fde39357)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch05p01.rs (/opt/rustwide/target/debug/deps/ch05p01-d5077612d6b40a96)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_insert_bits ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch05p02.rs (/opt/rustwide/target/debug/deps/ch05p02-ac8f614af479b810)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_float_to_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch05p03.rs (/opt/rustwide/target/debug/deps/ch05p03-6a6df3010ad4b237)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch05p04.rs (/opt/rustwide/target/debug/deps/ch05p04-d0e30dfdf7086504)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch05p05.rs (/opt/rustwide/target/debug/deps/ch05p05-33aafa068d0f8589)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch05p06.rs (/opt/rustwide/target/debug/deps/ch05p06-4991e0ea54e3a412)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_conversion ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch05p07.rs (/opt/rustwide/target/debug/deps/ch05p07-5d58e95010d565cd)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch05p08.rs (/opt/rustwide/target/debug/deps/ch05p08-18201e85574d9487)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_draw_line ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch07p01.rs (/opt/rustwide/target/debug/deps/ch07p01-aebfd44591ee4b49)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch07p02.rs (/opt/rustwide/target/debug/deps/ch07p02-07a2ba890014b017)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch07p12.rs (/opt/rustwide/target/debug/deps/ch07p12-260fc9e2bd2275da)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch08p01.rs (/opt/rustwide/target/debug/deps/ch08p01-627de7df00592165)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_triple_step ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch08p03.rs (/opt/rustwide/target/debug/deps/ch08p03-784f740e131126cb)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_magic_index ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch08p11.rs (/opt/rustwide/target/debug/deps/ch08p11-6f9fb93c1d03a914)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_make_change ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch08p12.rs (/opt/rustwide/target/debug/deps/ch08p12-e5eabefcd522099c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_eight_queens ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch10p01.rs (/opt/rustwide/target/debug/deps/ch10p01-cbc449fe282d3afc)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_merge_sorted_lists ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch10p02.rs (/opt/rustwide/target/debug/deps/ch10p02-0e834ca0c6a4453e)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_group_anagrams ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests coding_interview
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "571678e51aaabdc5deaaace1cef8eeaa192391dc918444752a005710782e4603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "571678e51aaabdc5deaaace1cef8eeaa192391dc918444752a005710782e4603", kill_on_drop: false }`
[INFO] [stdout] 571678e51aaabdc5deaaace1cef8eeaa192391dc918444752a005710782e4603