[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-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsh0623k%2Fcoding_interview" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sh0623k/coding_interview on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-28/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: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5c6ef869dd56d12b83620ed176121059b6e5de2aa9af4305a526ac134949824
[INFO] running `Command { std: "docker" "start" "-a" "e5c6ef869dd56d12b83620ed176121059b6e5de2aa9af4305a526ac134949824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5c6ef869dd56d12b83620ed176121059b6e5de2aa9af4305a526ac134949824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5c6ef869dd56d12b83620ed176121059b6e5de2aa9af4305a526ac134949824", kill_on_drop: false }`
[INFO] [stdout] e5c6ef869dd56d12b83620ed176121059b6e5de2aa9af4305a526ac134949824
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e6944758c8411546b0e15ca4420adb8f06dd70b861659fd6db767de44d6a1a3
[INFO] running `Command { std: "docker" "start" "-a" "9e6944758c8411546b0e15ca4420adb8f06dd70b861659fd6db767de44d6a1a3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: 1 warning emitted
[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: 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: 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: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: 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: field is never read: `suit`
[INFO] [stdout]   --> src/bin/ch07p01.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     suit: Suit,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `BlackJackCard` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/bin/ch07p01.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 | #[derive(Copy, Clone, Debug)]
[INFO] [stdout]    |                ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rank`
[INFO] [stdout]   --> src/bin/ch07p01.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     rank: Rank,
[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]   --> src/bin/ch07p01.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 | #[derive(Copy, Clone, Debug)]
[INFO] [stdout]    |                ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `completed`
[INFO] [stdout]   --> src/bin/ch07p02.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     completed: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Call` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/bin/ch07p02.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 | #[derive(Copy, Clone, Debug)]
[INFO] [stdout]    |                ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `available`
[INFO] [stdout]   --> src/bin/ch07p01.rs:73:5
[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]   --> src/bin/ch07p01.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 | #[derive(Copy, Clone, Debug)]
[INFO] [stdout]    |                ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cards`
[INFO] [stdout]   --> src/bin/ch07p01.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     cards: Vec<BlackJackCard>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `BlackJackHand` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/bin/ch07p01.rs:96:10
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[derive(Clone, Debug)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "9e6944758c8411546b0e15ca4420adb8f06dd70b861659fd6db767de44d6a1a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e6944758c8411546b0e15ca4420adb8f06dd70b861659fd6db767de44d6a1a3", kill_on_drop: false }`
[INFO] [stdout] 9e6944758c8411546b0e15ca4420adb8f06dd70b861659fd6db767de44d6a1a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f8b4e9077d801dd024253bd10eaf8b6a07d761387ac9d689c32b4a159b98c56
[INFO] running `Command { std: "docker" "start" "-a" "8f8b4e9077d801dd024253bd10eaf8b6a07d761387ac9d689c32b4a159b98c56", kill_on_drop: false }`
[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] [stderr]    Compiling coding_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[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: 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] [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: 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: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: 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: field is never read: `suit`
[INFO] [stdout]   --> src/bin/ch07p01.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     suit: Suit,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `BlackJackCard` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/bin/ch07p01.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 | #[derive(Copy, Clone, Debug)]
[INFO] [stdout]    |                ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rank`
[INFO] [stdout]   --> src/bin/ch07p01.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 72 |     rank: Rank,
[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]   --> src/bin/ch07p01.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 | #[derive(Copy, Clone, Debug)]
[INFO] [stdout]    |                ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `available`
[INFO] [stdout]   --> src/bin/ch07p01.rs:73:5
[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]   --> src/bin/ch07p01.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 | #[derive(Copy, Clone, Debug)]
[INFO] [stdout]    |                ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cards`
[INFO] [stdout]   --> src/bin/ch07p01.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     cards: Vec<BlackJackCard>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `BlackJackHand` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/bin/ch07p01.rs:96:10
[INFO] [stdout]    |
[INFO] [stdout] 96 | #[derive(Clone, Debug)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `completed`
[INFO] [stdout]   --> src/bin/ch07p02.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     completed: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Call` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/bin/ch07p02.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 | #[derive(Copy, Clone, Debug)]
[INFO] [stdout]    |                ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.08s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/coding_interview-6df5c5030caa9396)
[INFO] [stderr]   Executable unittests src/bin/ch01p01.rs (/opt/rustwide/target/debug/deps/ch01p01-753bd93c9373eef3)
[INFO] [stderr]   Executable unittests src/bin/ch01p02.rs (/opt/rustwide/target/debug/deps/ch01p02-369c33877b229321)
[INFO] [stderr]   Executable unittests src/bin/ch01p03.rs (/opt/rustwide/target/debug/deps/ch01p03-85cb4fe348b15ac8)
[INFO] [stderr]   Executable unittests src/bin/ch01p04.rs (/opt/rustwide/target/debug/deps/ch01p04-5b6116d0342ab634)
[INFO] [stderr]   Executable unittests src/bin/ch01p05.rs (/opt/rustwide/target/debug/deps/ch01p05-184b907e5fc95fc4)
[INFO] [stderr]   Executable unittests src/bin/ch01p06.rs (/opt/rustwide/target/debug/deps/ch01p06-cb1b8ae306a98993)
[INFO] [stderr]   Executable unittests src/bin/ch01p07.rs (/opt/rustwide/target/debug/deps/ch01p07-7f3939a35c0c44b5)
[INFO] [stderr]   Executable unittests src/bin/ch01p08.rs (/opt/rustwide/target/debug/deps/ch01p08-e099ad089b2dc82c)
[INFO] [stderr]   Executable unittests src/bin/ch01p09.rs (/opt/rustwide/target/debug/deps/ch01p09-aedc9a86ba659898)
[INFO] [stderr]   Executable unittests src/bin/ch02p01.rs (/opt/rustwide/target/debug/deps/ch02p01-d2b23a8bb9767f4e)
[INFO] [stderr]   Executable unittests src/bin/ch02p02.rs (/opt/rustwide/target/debug/deps/ch02p02-2bb3c0452ef0d119)
[INFO] [stderr]   Executable unittests src/bin/ch02p03.rs (/opt/rustwide/target/debug/deps/ch02p03-dee3042ba126d103)
[INFO] [stderr]   Executable unittests src/bin/ch02p04.rs (/opt/rustwide/target/debug/deps/ch02p04-ac9cab5668c4d988)
[INFO] [stderr]   Executable unittests src/bin/ch02p05.rs (/opt/rustwide/target/debug/deps/ch02p05-cc3516721bb9bc11)
[INFO] [stderr]   Executable unittests src/bin/ch02p06.rs (/opt/rustwide/target/debug/deps/ch02p06-fcb9a647d434d897)
[INFO] [stderr]   Executable unittests src/bin/ch02p07.rs (/opt/rustwide/target/debug/deps/ch02p07-16b398afee40acd6)
[INFO] [stderr]   Executable unittests src/bin/ch02p08.rs (/opt/rustwide/target/debug/deps/ch02p08-5f8993346bb7764c)
[INFO] [stderr]   Executable unittests src/bin/ch03p02.rs (/opt/rustwide/target/debug/deps/ch03p02-14cdc06125937a6b)
[INFO] [stderr]   Executable unittests src/bin/ch03p04.rs (/opt/rustwide/target/debug/deps/ch03p04-90bac024e6b5c89b)
[INFO] [stderr]   Executable unittests src/bin/ch03p05.rs (/opt/rustwide/target/debug/deps/ch03p05-b589023d353c5a0e)
[INFO] [stderr]   Executable unittests src/bin/ch03p06.rs (/opt/rustwide/target/debug/deps/ch03p06-bdb6fef61f5d4603)
[INFO] [stderr]   Executable unittests src/bin/ch04p02.rs (/opt/rustwide/target/debug/deps/ch04p02-011ab4d3513915bd)
[INFO] [stderr]   Executable unittests src/bin/ch04p03.rs (/opt/rustwide/target/debug/deps/ch04p03-ce84259fe8ab9fa5)
[INFO] [stderr]   Executable unittests src/bin/ch04p04.rs (/opt/rustwide/target/debug/deps/ch04p04-42f170a86f704116)
[INFO] [stderr]   Executable unittests src/bin/ch04p05.rs (/opt/rustwide/target/debug/deps/ch04p05-298ec8665dd27b2e)
[INFO] [stderr]   Executable unittests src/bin/ch04p06.rs (/opt/rustwide/target/debug/deps/ch04p06-e405b4bd66e26687)
[INFO] [stderr]   Executable unittests src/bin/ch04p11.rs (/opt/rustwide/target/debug/deps/ch04p11-d23099e960ec26c9)
[INFO] [stderr]   Executable unittests src/bin/ch04p12.rs (/opt/rustwide/target/debug/deps/ch04p12-1d07c3f8ffbc321f)
[INFO] [stderr]   Executable unittests src/bin/ch05p01.rs (/opt/rustwide/target/debug/deps/ch05p01-6eadcf0740c694a9)
[INFO] [stderr]   Executable unittests src/bin/ch05p02.rs (/opt/rustwide/target/debug/deps/ch05p02-2e774b9851a04bb6)
[INFO] [stderr]   Executable unittests src/bin/ch05p03.rs (/opt/rustwide/target/debug/deps/ch05p03-c961dcfb48e8e531)
[INFO] [stderr]   Executable unittests src/bin/ch05p04.rs (/opt/rustwide/target/debug/deps/ch05p04-d1e642312296c4c1)
[INFO] [stderr]   Executable unittests src/bin/ch05p05.rs (/opt/rustwide/target/debug/deps/ch05p05-93c0732f12d11f58)
[INFO] [stderr]   Executable unittests src/bin/ch05p06.rs (/opt/rustwide/target/debug/deps/ch05p06-7753021b1a6ccd91)
[INFO] [stderr]   Executable unittests src/bin/ch05p07.rs (/opt/rustwide/target/debug/deps/ch05p07-8d806dfa43a7972f)
[INFO] [stderr]   Executable unittests src/bin/ch05p08.rs (/opt/rustwide/target/debug/deps/ch05p08-7cdf9c1fb630d46f)
[INFO] [stderr]   Executable unittests src/bin/ch07p01.rs (/opt/rustwide/target/debug/deps/ch07p01-5c8b63ebc9714039)
[INFO] [stderr]   Executable unittests src/bin/ch07p02.rs (/opt/rustwide/target/debug/deps/ch07p02-00a6a5c99e6cd97c)
[INFO] [stderr]   Executable unittests src/bin/ch07p12.rs (/opt/rustwide/target/debug/deps/ch07p12-d862538a5bf414c0)
[INFO] [stderr]   Executable unittests src/bin/ch08p01.rs (/opt/rustwide/target/debug/deps/ch08p01-7679f9332065540a)
[INFO] [stderr]   Executable unittests src/bin/ch08p03.rs (/opt/rustwide/target/debug/deps/ch08p03-4d0366380d111a1b)
[INFO] [stderr]   Executable unittests src/bin/ch08p11.rs (/opt/rustwide/target/debug/deps/ch08p11-4758621ff90bb984)
[INFO] [stderr]   Executable unittests src/bin/ch08p12.rs (/opt/rustwide/target/debug/deps/ch08p12-6f24b34e850e2f9c)
[INFO] [stderr]   Executable unittests src/bin/ch10p01.rs (/opt/rustwide/target/debug/deps/ch10p01-23ddf6c74d74bcba)
[INFO] [stderr]   Executable unittests src/bin/ch10p02.rs (/opt/rustwide/target/debug/deps/ch10p02-9938dcff5939b357)
[INFO] running `Command { std: "docker" "inspect" "8f8b4e9077d801dd024253bd10eaf8b6a07d761387ac9d689c32b4a159b98c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f8b4e9077d801dd024253bd10eaf8b6a07d761387ac9d689c32b4a159b98c56", kill_on_drop: false }`
[INFO] [stdout] 8f8b4e9077d801dd024253bd10eaf8b6a07d761387ac9d689c32b4a159b98c56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f03f590dfc51f70c5344b94502d0b8f8050c3fae3a25a2b9c33fde59554af0ac
[INFO] running `Command { std: "docker" "start" "-a" "f03f590dfc51f70c5344b94502d0b8f8050c3fae3a25a2b9c33fde59554af0ac", 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: 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` (lib test) generated 2 warnings (1 duplicate)
[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: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: 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: field is never read: `suit`
[INFO] [stderr]   --> src/bin/ch07p01.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     suit: Suit,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `BlackJackCard` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/bin/ch07p01.rs:69:16
[INFO] [stderr]    |
[INFO] [stderr] 69 | #[derive(Copy, Clone, Debug)]
[INFO] [stderr]    |                ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `rank`
[INFO] [stderr]   --> src/bin/ch07p01.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     rank: Rank,
[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]   --> src/bin/ch07p01.rs:69:16
[INFO] [stderr]    |
[INFO] [stderr] 69 | #[derive(Copy, Clone, Debug)]
[INFO] [stderr]    |                ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `available`
[INFO] [stderr]   --> src/bin/ch07p01.rs:73:5
[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]   --> src/bin/ch07p01.rs:69:16
[INFO] [stderr]    |
[INFO] [stderr] 69 | #[derive(Copy, Clone, Debug)]
[INFO] [stderr]    |                ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `cards`
[INFO] [stderr]   --> src/bin/ch07p01.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     cards: Vec<BlackJackCard>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `BlackJackHand` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/bin/ch07p01.rs:96:10
[INFO] [stderr]    |
[INFO] [stderr] 96 | #[derive(Clone, Debug)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[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: 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: field is never read: `completed`
[INFO] [stderr]   --> src/bin/ch07p02.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     completed: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Call` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/bin/ch07p02.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 | #[derive(Copy, Clone, Debug)]
[INFO] [stderr]    |                ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `coding_interview` (bin "ch07p01" test) generated 8 warnings
[INFO] [stderr] warning: `coding_interview` (bin "ch04p02" test) generated 1 warning
[INFO] [stderr] warning: `coding_interview` (bin "ch02p03" test) generated 1 warning
[INFO] [stderr] warning: `coding_interview` (bin "ch07p02" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/coding_interview-6df5c5030caa9396)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[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 graph::tests::test_dp_shortest_path_len ... ok
[INFO] [stdout] test linked_list::tests::test_partition ... 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_remove_node ... ok
[INFO] [stdout] test queue::tests::test_my_queue ... ok
[INFO] [stdout] test stack::tests::test_set_of_stacks ... ok
[INFO] [stdout] test queue::tests::test_iterator ... ok
[INFO] [stderr]      Running unittests src/bin/ch01p01.rs (/opt/rustwide/target/debug/deps/ch01p01-753bd93c9373eef3)
[INFO] [stdout] test stack::tests::test_stack ... ok
[INFO] [stdout] test str_helper::tests::test_create_char_count_map_from_str ... ok
[INFO] [stdout] test str_helper::tests::test_get_next_char_boundary ... 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] [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/ch01p02-369c33877b229321)
[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/ch01p03-85cb4fe348b15ac8)
[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/ch01p04-5b6116d0342ab634)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests src/bin/ch01p05.rs (/opt/rustwide/target/debug/deps/ch01p05-184b907e5fc95fc4)
[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/ch01p06.rs (/opt/rustwide/target/debug/deps/ch01p06-cb1b8ae306a98993)
[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] [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/ch01p07-7f3939a35c0c44b5)
[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-e099ad089b2dc82c)
[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-aedc9a86ba659898)
[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] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p01.rs (/opt/rustwide/target/debug/deps/ch02p01-d2b23a8bb9767f4e)
[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/ch02p02-2bb3c0452ef0d119)
[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-dee3042ba126d103)
[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-ac9cab5668c4d988)
[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-cc3516721bb9bc11)
[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-fcb9a647d434d897)
[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/ch02p07-16b398afee40acd6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch02p08.rs (/opt/rustwide/target/debug/deps/ch02p08-5f8993346bb7764c)
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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/ch03p02-14cdc06125937a6b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests src/bin/ch03p04.rs (/opt/rustwide/target/debug/deps/ch03p04-90bac024e6b5c89b)
[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] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch03p05.rs (/opt/rustwide/target/debug/deps/ch03p05-b589023d353c5a0e)
[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-bdb6fef61f5d4603)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch04p02.rs (/opt/rustwide/target/debug/deps/ch04p02-011ab4d3513915bd)
[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] [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] [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-ce84259fe8ab9fa5)
[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/ch04p04-42f170a86f704116)
[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/ch04p05-298ec8665dd27b2e)
[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-e405b4bd66e26687)
[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-d23099e960ec26c9)
[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/ch04p12-1d07c3f8ffbc321f)
[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/ch05p01-6eadcf0740c694a9)
[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/ch05p02-2e774b9851a04bb6)
[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-c961dcfb48e8e531)
[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-d1e642312296c4c1)
[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/ch05p05-93c0732f12d11f58)
[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/ch05p06-7753021b1a6ccd91)
[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/ch05p07-8d806dfa43a7972f)
[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/ch05p08-7cdf9c1fb630d46f)
[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/ch07p01-5c8b63ebc9714039)
[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/ch07p02-00a6a5c99e6cd97c)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ch07p12.rs (/opt/rustwide/target/debug/deps/ch07p12-d862538a5bf414c0)
[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] [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/ch08p01-7679f9332065540a)
[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/ch08p03-4d0366380d111a1b)
[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/ch08p11-4758621ff90bb984)
[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/ch08p12-6f24b34e850e2f9c)
[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/ch10p01-23ddf6c74d74bcba)
[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/ch10p02-9938dcff5939b357)
[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" "f03f590dfc51f70c5344b94502d0b8f8050c3fae3a25a2b9c33fde59554af0ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f03f590dfc51f70c5344b94502d0b8f8050c3fae3a25a2b9c33fde59554af0ac", kill_on_drop: false }`
[INFO] [stdout] f03f590dfc51f70c5344b94502d0b8f8050c3fae3a25a2b9c33fde59554af0ac