[INFO] cloning repository https://github.com/elitecodegroovy/thinking-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elitecodegroovy/thinking-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felitecodegroovy%2Fthinking-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felitecodegroovy%2Fthinking-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0fa462bbe8d66728608cfeb1ae5494a52b20bf15
[INFO] checking elitecodegroovy/thinking-in-rust against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felitecodegroovy%2Fthinking-in-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elitecodegroovy/thinking-in-rust on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/elitecodegroovy/thinking-in-rust
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/elitecodegroovy/thinking-in-rust
[INFO] tweaked toml for git repo https://github.com/elitecodegroovy/thinking-in-rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/elitecodegroovy/thinking-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b0adc8d5a6baeba79933ed00d931ba7fd9e8a985b34919de42a9a3da554e0ed
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
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[INFO] running `Command { std: "docker" "inspect" "3b0adc8d5a6baeba79933ed00d931ba7fd9e8a985b34919de42a9a3da554e0ed", kill_on_drop: false }`
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[INFO] [stdout] 3b0adc8d5a6baeba79933ed00d931ba7fd9e8a985b34919de42a9a3da554e0ed
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[INFO] running `Command { std: "docker" "start" "-a" "f55614583ae7d917dcc4d1039d74ed0bb51d9636f4e654be14a4d51513b7c949", kill_on_drop: false }`
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[INFO] [stderr]    Compiling rand_pcg v0.1.2
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[INFO] [stderr]     Checking encoding_rs_io v0.1.7
[INFO] [stderr]     Checking grep-searcher v0.1.7 (/opt/rustwide/workdir/crates/searcher)
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[INFO] [stderr]    Compiling pcre2-sys v0.2.5
[INFO] [stderr]     Checking globset v0.4.6 (/opt/rustwide/workdir/crates/globset)
[INFO] [stderr]     Checking grep-regex v0.1.8 (/opt/rustwide/workdir/crates/regex)
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[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]     Checking grep-cli v0.1.5 (/opt/rustwide/workdir/crates/cli)
[INFO] [stderr]     Checking ignore v0.4.17 (/opt/rustwide/workdir/crates/ignore)
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[INFO] [stderr]     Checking grep-pcre2 v0.1.4 (/opt/rustwide/workdir/crates/pcre2)
[INFO] [stderr]    Compiling thinking v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking grep-printer v0.1.5 (/opt/rustwide/workdir/crates/printer)
[INFO] [stderr]     Checking grep v0.2.7 (/opt/rustwide/workdir/crates/grep)
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> crates/core/thinking.rs:546:9
[INFO] [stdout]     |
[INFO] [stdout] 546 |         'inner_loop: loop {
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> crates/core/thinking.rs:586:9
[INFO] [stdout]     |
[INFO] [stdout] 586 |         'inner_while: while c2 < 6 {
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `drop` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1197:9
[INFO] [stdout]      |
[INFO] [stdout] 1197 |     use std::mem::drop;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1215:9
[INFO] [stdout]      |
[INFO] [stdout] 1215 |     use std::io::Read;
[INFO] [stdout]      |         ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1505 | use std::io::prelude::*;
[INFO] [stdout]      |     ------------------- the item `Read` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mpsc` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1245:9
[INFO] [stdout]      |
[INFO] [stdout] 2    | use std::sync::mpsc;
[INFO] [stdout]      |     --------------- the item `mpsc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1245 |     use std::sync::mpsc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `thread` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1246:9
[INFO] [stdout]      |
[INFO] [stdout] 5    | use std::thread;
[INFO] [stdout]      |     ----------- the item `thread` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1246 |     use std::thread;
[INFO] [stdout]      |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1247:9
[INFO] [stdout]      |
[INFO] [stdout] 9    | use std::time::{Duration, Instant};
[INFO] [stdout]      |                 -------- the item `Duration` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1247 |     use std::time::Duration;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1286:21
[INFO] [stdout]      |
[INFO] [stdout] 3    | use std::sync::Arc;
[INFO] [stdout]      |     -------------- the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1286 |     use std::sync::{Arc, Mutex};
[INFO] [stdout]      |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Mutex` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1286:26
[INFO] [stdout]      |
[INFO] [stdout] 4    | use std::sync::Mutex;
[INFO] [stdout]      |     ---------------- the item `Mutex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1286 |     use std::sync::{Arc, Mutex};
[INFO] [stdout]      |                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `thread` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1287:9
[INFO] [stdout]      |
[INFO] [stdout] 5    | use std::thread;
[INFO] [stdout]      |     ----------- the item `thread` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1287 |     use std::thread;
[INFO] [stdout]      |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> crates/core/main.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]    --> crates/core/main.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 2   | use std::io::{self, Write};
[INFO] [stdout]     |                     ----- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 134 |     use std::io::Write;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> crates/core/thinking.rs:546:9
[INFO] [stdout]     |
[INFO] [stdout] 546 |         'inner_loop: loop {
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> crates/core/thinking.rs:586:9
[INFO] [stdout]     |
[INFO] [stdout] 586 |         'inner_while: while c2 < 6 {
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `drop` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1197:9
[INFO] [stdout]      |
[INFO] [stdout] 1197 |     use std::mem::drop;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1215:9
[INFO] [stdout]      |
[INFO] [stdout] 1215 |     use std::io::Read;
[INFO] [stdout]      |         ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1505 | use std::io::prelude::*;
[INFO] [stdout]      |     ------------------- the item `Read` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mpsc` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1245:9
[INFO] [stdout]      |
[INFO] [stdout] 2    | use std::sync::mpsc;
[INFO] [stdout]      |     --------------- the item `mpsc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1245 |     use std::sync::mpsc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `thread` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1246:9
[INFO] [stdout]      |
[INFO] [stdout] 5    | use std::thread;
[INFO] [stdout]      |     ----------- the item `thread` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1246 |     use std::thread;
[INFO] [stdout]      |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1247:9
[INFO] [stdout]      |
[INFO] [stdout] 9    | use std::time::{Duration, Instant};
[INFO] [stdout]      |                 -------- the item `Duration` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1247 |     use std::time::Duration;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1286:21
[INFO] [stdout]      |
[INFO] [stdout] 3    | use std::sync::Arc;
[INFO] [stdout]      |     -------------- the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1286 |     use std::sync::{Arc, Mutex};
[INFO] [stdout]      |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Mutex` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1286:26
[INFO] [stdout]      |
[INFO] [stdout] 4    | use std::sync::Mutex;
[INFO] [stdout]      |     ---------------- the item `Mutex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1286 |     use std::sync::{Arc, Mutex};
[INFO] [stdout]      |                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `thread` is imported redundantly
[INFO] [stdout]     --> crates/core/thinking.rs:1287:9
[INFO] [stdout]      |
[INFO] [stdout] 5    | use std::thread;
[INFO] [stdout]      |     ----------- the item `thread` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1287 |     use std::thread;
[INFO] [stdout]      |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> crates/core/main.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]    --> crates/core/main.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 2   | use std::io::{self, Write};
[INFO] [stdout]     |                     ----- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 134 |     use std::io::Write;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::internal::Input`
[INFO] [stdout]  --> crates/core/thinking.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use regex::internal::Input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inferred_i32` is assigned to, but never used
[INFO] [stdout]    --> crates/core/thinking.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     let mut inferred_i32 = 12;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_inferred_i32` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inferred_i32` is never read
[INFO] [stdout]    --> crates/core/thinking.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 156 |     inferred_i32 = 88888888888i64;
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `m_i32` is assigned to, but never used
[INFO] [stdout]    --> crates/core/thinking.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let mut m_i32 = 100; // Mutable `i32`
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_m_i32` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m_i32` is never read
[INFO] [stdout]    --> crates/core/thinking.rs:160:5
[INFO] [stdout]     |
[INFO] [stdout] 160 |     m_i32 = 2000;
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]     --> crates/core/thinking.rs:1065:9
[INFO] [stdout]      |
[INFO] [stdout] 1065 |     let y = &x;
[INFO] [stdout]      |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]     --> crates/core/thinking.rs:1066:9
[INFO] [stdout]      |
[INFO] [stdout] 1066 |     let z = &x;
[INFO] [stdout]      |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::internal::Input`
[INFO] [stdout]  --> crates/core/thinking.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use regex::internal::Input;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inferred_i32` is assigned to, but never used
[INFO] [stdout]    --> crates/core/thinking.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |     let mut inferred_i32 = 12;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_inferred_i32` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inferred_i32` is never read
[INFO] [stdout]    --> crates/core/thinking.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 156 |     inferred_i32 = 88888888888i64;
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `m_i32` is assigned to, but never used
[INFO] [stdout]    --> crates/core/thinking.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let mut m_i32 = 100; // Mutable `i32`
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_m_i32` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m_i32` is never read
[INFO] [stdout]    --> crates/core/thinking.rs:160:5
[INFO] [stdout]     |
[INFO] [stdout] 160 |     m_i32 = 2000;
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]     --> crates/core/thinking.rs:1065:9
[INFO] [stdout]      |
[INFO] [stdout] 1065 |     let y = &x;
[INFO] [stdout]      |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]     --> crates/core/thinking.rs:1066:9
[INFO] [stdout]      |
[INFO] [stdout] 1066 |     let z = &x;
[INFO] [stdout]      |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> crates/core/thinking.rs:791:9
[INFO] [stdout]     |
[INFO] [stdout] 791 |     let mut cat: Cat = Animal::new("Kity");
[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]    --> crates/core/thinking.rs:791:9
[INFO] [stdout]     |
[INFO] [stdout] 791 |     let mut cat: Cat = Animal::new("Kity");
[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: variant is never constructed: `NewJob`
[INFO] [stdout]   --> crates/core/thinking.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     NewJob(Job),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> crates/core/thinking.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn new(size: usize) -> ThreadPool {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute`
[INFO] [stdout]   --> crates/core/thinking.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn execute<F>(&self, f: F)
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> crates/core/thinking.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Message>>>) -> Worker {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Two`
[INFO] [stdout]    --> crates/core/thinking.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |         Two,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]    --> crates/core/thinking.rs:308:9
[INFO] [stdout]     |
[INFO] [stdout] 308 |         Green = 0x00ff00,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `do_guess_number`
[INFO] [stdout]    --> crates/core/thinking.rs:320:4
[INFO] [stdout]     |
[INFO] [stdout] 320 | fn do_guess_number() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_color`
[INFO] [stdout]    --> crates/core/thinking.rs:724:12
[INFO] [stdout]     |
[INFO] [stdout] 724 |         fn get_color(&self) -> &'static str {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Struct`
[INFO] [stdout]    --> crates/core/thinking.rs:881:12
[INFO] [stdout]     |
[INFO] [stdout] 881 |     struct Struct<'a> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `function`
[INFO] [stdout]    --> crates/core/thinking.rs:885:12
[INFO] [stdout]     |
[INFO] [stdout] 885 |         fn function(&self) -> &'a str {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Struct`
[INFO] [stdout]    --> crates/core/thinking.rs:892:12
[INFO] [stdout]     |
[INFO] [stdout] 892 |     struct Struct<'a> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> crates/core/thinking.rs:897:12
[INFO] [stdout]     |
[INFO] [stdout] 897 |         fn new(x: &'a str, y: &'a str) -> Struct<'a> { // No need to specify <'a> after new; impl already has it
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `greeting`
[INFO] [stdout]    --> crates/core/thinking.rs:912:8
[INFO] [stdout]     |
[INFO] [stdout] 912 |     fn greeting<'a>() -> &'a str {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fullname`
[INFO] [stdout]    --> crates/core/thinking.rs:915:8
[INFO] [stdout]     |
[INFO] [stdout] 915 |     fn fullname<'a>(fname: &'a str, lname: &'a str) -> String {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `greet`
[INFO] [stdout]    --> crates/core/thinking.rs:939:4
[INFO] [stdout]     |
[INFO] [stdout] 939 | fn greet() -> String {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `greet`
[INFO] [stdout]    --> crates/core/thinking.rs:952:12
[INFO] [stdout]     |
[INFO] [stdout] 952 |     pub fn greet() { // ⭐️ So function has to be public to access from outside
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `regular_x`
[INFO] [stdout]     --> crates/core/thinking.rs:1034:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |         regular_x: u8,
[INFO] [stdout]      |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quit`
[INFO] [stdout]     --> crates/core/thinking.rs:1099:9
[INFO] [stdout]      |
[INFO] [stdout] 1099 |         Quit,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Move`
[INFO] [stdout]     --> crates/core/thinking.rs:1100:9
[INFO] [stdout]      |
[INFO] [stdout] 1100 |         Move { x: i32, y: i32 },
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Write`
[INFO] [stdout]     --> crates/core/thinking.rs:1101:9
[INFO] [stdout]      |
[INFO] [stdout] 1101 |         Write(String),
[INFO] [stdout]      |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `handle_connection`
[INFO] [stdout]     --> crates/core/thinking.rs:1509:4
[INFO] [stdout]      |
[INFO] [stdout] 1509 | fn handle_connection(mut stream: TcpStream) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `do_simple_web_listener`
[INFO] [stdout]     --> crates/core/thinking.rs:1536:4
[INFO] [stdout]      |
[INFO] [stdout] 1536 | fn do_simple_web_listener() {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Two`
[INFO] [stdout]     --> crates/core/thinking.rs:1582:9
[INFO] [stdout]      |
[INFO] [stdout] 1582 |         Two,
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `initLog` should have a snake case name
[INFO] [stdout]    --> crates/core/main.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn initLog() {
[INFO] [stdout]     |    ^^^^^^^ help: convert the identifier to snake case: `init_log`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NewJob`
[INFO] [stdout]   --> crates/core/thinking.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     NewJob(Job),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> crates/core/thinking.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn new(size: usize) -> ThreadPool {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute`
[INFO] [stdout]   --> crates/core/thinking.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn execute<F>(&self, f: F)
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> crates/core/thinking.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Message>>>) -> Worker {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Two`
[INFO] [stdout]    --> crates/core/thinking.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |         Two,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Green`
[INFO] [stdout]    --> crates/core/thinking.rs:308:9
[INFO] [stdout]     |
[INFO] [stdout] 308 |         Green = 0x00ff00,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `do_guess_number`
[INFO] [stdout]    --> crates/core/thinking.rs:320:4
[INFO] [stdout]     |
[INFO] [stdout] 320 | fn do_guess_number() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_color`
[INFO] [stdout]    --> crates/core/thinking.rs:724:12
[INFO] [stdout]     |
[INFO] [stdout] 724 |         fn get_color(&self) -> &'static str {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Struct`
[INFO] [stdout]    --> crates/core/thinking.rs:881:12
[INFO] [stdout]     |
[INFO] [stdout] 881 |     struct Struct<'a> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `function`
[INFO] [stdout]    --> crates/core/thinking.rs:885:12
[INFO] [stdout]     |
[INFO] [stdout] 885 |         fn function(&self) -> &'a str {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Struct`
[INFO] [stdout]    --> crates/core/thinking.rs:892:12
[INFO] [stdout]     |
[INFO] [stdout] 892 |     struct Struct<'a> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> crates/core/thinking.rs:897:12
[INFO] [stdout]     |
[INFO] [stdout] 897 |         fn new(x: &'a str, y: &'a str) -> Struct<'a> { // No need to specify <'a> after new; impl already has it
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `greeting`
[INFO] [stdout]    --> crates/core/thinking.rs:912:8
[INFO] [stdout]     |
[INFO] [stdout] 912 |     fn greeting<'a>() -> &'a str {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fullname`
[INFO] [stdout]    --> crates/core/thinking.rs:915:8
[INFO] [stdout]     |
[INFO] [stdout] 915 |     fn fullname<'a>(fname: &'a str, lname: &'a str) -> String {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `regular_x`
[INFO] [stdout]     --> crates/core/thinking.rs:1034:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |         regular_x: u8,
[INFO] [stdout]      |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Quit`
[INFO] [stdout]     --> crates/core/thinking.rs:1099:9
[INFO] [stdout]      |
[INFO] [stdout] 1099 |         Quit,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Move`
[INFO] [stdout]     --> crates/core/thinking.rs:1100:9
[INFO] [stdout]      |
[INFO] [stdout] 1100 |         Move { x: i32, y: i32 },
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Write`
[INFO] [stdout]     --> crates/core/thinking.rs:1101:9
[INFO] [stdout]      |
[INFO] [stdout] 1101 |         Write(String),
[INFO] [stdout]      |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `handle_connection`
[INFO] [stdout]     --> crates/core/thinking.rs:1509:4
[INFO] [stdout]      |
[INFO] [stdout] 1509 | fn handle_connection(mut stream: TcpStream) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `do_simple_web_listener`
[INFO] [stdout]     --> crates/core/thinking.rs:1536:4
[INFO] [stdout]      |
[INFO] [stdout] 1536 | fn do_simple_web_listener() {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Two`
[INFO] [stdout]     --> crates/core/thinking.rs:1582:9
[INFO] [stdout]      |
[INFO] [stdout] 1582 |         Two,
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `initLog` should have a snake case name
[INFO] [stdout]    --> crates/core/main.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn initLog() {
[INFO] [stdout]     |    ^^^^^^^ help: convert the identifier to snake case: `init_log`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]     --> crates/core/thinking.rs:1223:5
[INFO] [stdout]      |
[INFO] [stdout] 1223 |     read_username_from_file();
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `showTime` should have a snake case name
[INFO] [stdout]     --> crates/core/thinking.rs:1638:4
[INFO] [stdout]      |
[INFO] [stdout] 1638 | fn showTime() -> Result<(), ParseError>{
[INFO] [stdout]      |    ^^^^^^^^ help: convert the identifier to snake case: `show_time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]     --> crates/core/thinking.rs:1724:5
[INFO] [stdout]      |
[INFO] [stdout] 1724 |     showTime();
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]     --> crates/core/thinking.rs:1223:5
[INFO] [stdout]      |
[INFO] [stdout] 1223 |     read_username_from_file();
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `showTime` should have a snake case name
[INFO] [stdout]     --> crates/core/thinking.rs:1638:4
[INFO] [stdout]      |
[INFO] [stdout] 1638 | fn showTime() -> Result<(), ParseError>{
[INFO] [stdout]      |    ^^^^^^^^ help: convert the identifier to snake case: `show_time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]     --> crates/core/thinking.rs:1724:5
[INFO] [stdout]      |
[INFO] [stdout] 1724 |     showTime();
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 47 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 45 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "f55614583ae7d917dcc4d1039d74ed0bb51d9636f4e654be14a4d51513b7c949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f55614583ae7d917dcc4d1039d74ed0bb51d9636f4e654be14a4d51513b7c949", kill_on_drop: false }`
[INFO] [stdout] f55614583ae7d917dcc4d1039d74ed0bb51d9636f4e654be14a4d51513b7c949