Dec 18 06:51:23.334 INFO checking Kyledmw/rust-web-thing against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 06:51:23.334 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/Kyledmw/rust-web-thing:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 06:51:23.898 INFO [stdout] 669c43b6f0cfb6462f2efedb1b882a14b9aba3c434778bf72904253a289942ca
Dec 18 06:51:23.902 INFO running `"docker" "start" "-a" "669c43b6f0cfb6462f2efedb1b882a14b9aba3c434778bf72904253a289942ca"`
Dec 18 06:51:25.827 INFO [stderr]     Checking rust-web-thing v0.1.0 (/opt/crater/workdir)
Dec 18 06:51:26.520 INFO [stderr] warning: unused variable: `word`
Dec 18 06:51:26.520 INFO [stderr]    --> src/main.rs:241:9
Dec 18 06:51:26.520 INFO [stderr]     |
Dec 18 06:51:26.520 INFO [stderr] 241 |     let word = first_word(&s);
Dec 18 06:51:26.520 INFO [stderr]     |         ^^^^ help: consider using `_word` instead
Dec 18 06:51:26.520 INFO [stderr]     |
Dec 18 06:51:26.520 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 06:51:26.520 INFO [stderr] 
Dec 18 06:51:26.520 INFO [stderr] warning: unused variable: `user3`
Dec 18 06:51:26.520 INFO [stderr]    --> src/main.rs:325:9
Dec 18 06:51:26.520 INFO [stderr]     |
Dec 18 06:51:26.520 INFO [stderr] 325 |     let user3 = User {
Dec 18 06:51:26.520 INFO [stderr]     |         ^^^^^ help: consider using `_user3` instead
Dec 18 06:51:26.520 INFO [stderr] 
Dec 18 06:51:26.520 INFO [stderr] warning: unused variable: `user4`
Dec 18 06:51:26.520 INFO [stderr]    --> src/main.rs:334:9
Dec 18 06:51:26.520 INFO [stderr]     |
Dec 18 06:51:26.520 INFO [stderr] 334 |     let user4 = User {
Dec 18 06:51:26.520 INFO [stderr]     |         ^^^^^ help: consider using `_user4` instead
Dec 18 06:51:26.520 INFO [stderr] 
Dec 18 06:51:26.520 INFO [stderr] warning: unused variable: `black`
Dec 18 06:51:26.520 INFO [stderr]    --> src/main.rs:365:9
Dec 18 06:51:26.520 INFO [stderr]     |
Dec 18 06:51:26.520 INFO [stderr] 365 |     let black = Color(0, 0, 0);
Dec 18 06:51:26.520 INFO [stderr]     |         ^^^^^ help: consider using `_black` instead
Dec 18 06:51:26.520 INFO [stderr] 
Dec 18 06:51:26.520 INFO [stderr] warning: unused variable: `home`
Dec 18 06:51:26.520 INFO [stderr]    --> src/main.rs:435:9
Dec 18 06:51:26.520 INFO [stderr]     |
Dec 18 06:51:26.520 INFO [stderr] 435 |     let home = IpAddrStruct {
Dec 18 06:51:26.520 INFO [stderr]     |         ^^^^ help: consider using `_home` instead
Dec 18 06:51:26.520 INFO [stderr] 
Dec 18 06:51:26.520 INFO [stderr] warning: unused variable: `loopback`
Dec 18 06:51:26.520 INFO [stderr]    --> src/main.rs:440:9
Dec 18 06:51:26.520 INFO [stderr]     |
Dec 18 06:51:26.520 INFO [stderr] 440 |     let loopback = IpAddrStruct {
Dec 18 06:51:26.520 INFO [stderr]     |         ^^^^^^^^ help: consider using `_loopback` instead
Dec 18 06:51:26.520 INFO [stderr] 
Dec 18 06:51:26.520 INFO [stderr] warning: unused variable: `h`
Dec 18 06:51:26.520 INFO [stderr]    --> src/main.rs:445:9
Dec 18 06:51:26.520 INFO [stderr]     |
Dec 18 06:51:26.521 INFO [stderr] 445 |     let h = IpAddrS::V4(String::from("127.0.0.1"));
Dec 18 06:51:26.521 INFO [stderr]     |         ^ help: consider using `_h` instead
Dec 18 06:51:26.521 INFO [stderr] 
Dec 18 06:51:26.521 INFO [stderr] warning: unused variable: `lb`
Dec 18 06:51:26.521 INFO [stderr]    --> src/main.rs:446:9
Dec 18 06:51:26.521 INFO [stderr]     |
Dec 18 06:51:26.521 INFO [stderr] 446 |     let lb = IpAddrS::V6(String::from("::1"));
Dec 18 06:51:26.521 INFO [stderr]     |         ^^ help: consider using `_lb` instead
Dec 18 06:51:26.521 INFO [stderr] 
Dec 18 06:51:26.521 INFO [stderr] warning: unused variable: `h2`
Dec 18 06:51:26.521 INFO [stderr]    --> src/main.rs:448:9
Dec 18 06:51:26.521 INFO [stderr]     |
Dec 18 06:51:26.521 INFO [stderr] 448 |     let h2  = IpAddr::V4(127, 0, 0, 1);
Dec 18 06:51:26.521 INFO [stderr]     |         ^^ help: consider using `_h2` instead
Dec 18 06:51:26.521 INFO [stderr] 
Dec 18 06:51:26.521 INFO [stderr] warning: unused variable: `ip_type`
Dec 18 06:51:26.521 INFO [stderr]    --> src/main.rs:458:10
Dec 18 06:51:26.521 INFO [stderr]     |
Dec 18 06:51:26.521 INFO [stderr] 458 | fn route(ip_type: IpAddrKind) {}
Dec 18 06:51:26.521 INFO [stderr]     |          ^^^^^^^ help: consider using `_ip_type` instead
Dec 18 06:51:26.521 INFO [stderr] 
Dec 18 06:51:26.521 INFO [stderr] warning: unused variable: `some_number`
Dec 18 06:51:26.521 INFO [stderr]    --> src/main.rs:489:9
Dec 18 06:51:26.521 INFO [stderr]     |
Dec 18 06:51:26.521 INFO [stderr] 489 |     let some_number = Some(5);
Dec 18 06:51:26.521 INFO [stderr]     |         ^^^^^^^^^^^ help: consider using `_some_number` instead
Dec 18 06:51:26.521 INFO [stderr] 
Dec 18 06:51:26.521 INFO [stderr] warning: unused variable: `some_string`
Dec 18 06:51:26.521 INFO [stderr]    --> src/main.rs:490:9
Dec 18 06:51:26.521 INFO [stderr]     |
Dec 18 06:51:26.521 INFO [stderr] 490 |     let some_string = Some("a string");
Dec 18 06:51:26.521 INFO [stderr]     |         ^^^^^^^^^^^ help: consider using `_some_string` instead
Dec 18 06:51:26.521 INFO [stderr] 
Dec 18 06:51:26.521 INFO [stderr] warning: unused variable: `absent_number`
Dec 18 06:51:26.521 INFO [stderr]    --> src/main.rs:492:9
Dec 18 06:51:26.521 INFO [stderr]     |
Dec 18 06:51:26.521 INFO [stderr] 492 |     let absent_number: Option<i32> = None;
Dec 18 06:51:26.521 INFO [stderr]     |         ^^^^^^^^^^^^^ help: consider using `_absent_number` instead
Dec 18 06:51:26.521 INFO [stderr] 
Dec 18 06:51:26.521 INFO [stderr] warning: unused variable: `sum`
Dec 18 06:51:26.521 INFO [stderr]    --> src/main.rs:499:9
Dec 18 06:51:26.521 INFO [stderr]     |
Dec 18 06:51:26.521 INFO [stderr] 499 |     let sum = y.unwrap() + x;
Dec 18 06:51:26.521 INFO [stderr]     |         ^^^ help: consider using `_sum` instead
Dec 18 06:51:26.521 INFO [stderr] 
Dec 18 06:51:26.548 INFO [stderr] warning: unused variable: `word`
Dec 18 06:51:26.548 INFO [stderr]    --> src/main.rs:241:9
Dec 18 06:51:26.548 INFO [stderr]     |
Dec 18 06:51:26.548 INFO [stderr] 241 |     let word = first_word(&s);
Dec 18 06:51:26.548 INFO [stderr]     |         ^^^^ help: consider using `_word` instead
Dec 18 06:51:26.548 INFO [stderr]     |
Dec 18 06:51:26.548 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 06:51:26.548 INFO [stderr] 
Dec 18 06:51:26.548 INFO [stderr] warning: unused variable: `user3`
Dec 18 06:51:26.548 INFO [stderr]    --> src/main.rs:325:9
Dec 18 06:51:26.548 INFO [stderr]     |
Dec 18 06:51:26.548 INFO [stderr] 325 |     let user3 = User {
Dec 18 06:51:26.548 INFO [stderr]     |         ^^^^^ help: consider using `_user3` instead
Dec 18 06:51:26.548 INFO [stderr] 
Dec 18 06:51:26.548 INFO [stderr] warning: unused variable: `user4`
Dec 18 06:51:26.548 INFO [stderr]    --> src/main.rs:334:9
Dec 18 06:51:26.548 INFO [stderr]     |
Dec 18 06:51:26.548 INFO [stderr] 334 |     let user4 = User {
Dec 18 06:51:26.548 INFO [stderr]     |         ^^^^^ help: consider using `_user4` instead
Dec 18 06:51:26.548 INFO [stderr] 
Dec 18 06:51:26.548 INFO [stderr] warning: unused variable: `black`
Dec 18 06:51:26.548 INFO [stderr]    --> src/main.rs:365:9
Dec 18 06:51:26.548 INFO [stderr]     |
Dec 18 06:51:26.548 INFO [stderr] 365 |     let black = Color(0, 0, 0);
Dec 18 06:51:26.548 INFO [stderr]     |         ^^^^^ help: consider using `_black` instead
Dec 18 06:51:26.548 INFO [stderr] 
Dec 18 06:51:26.548 INFO [stderr] warning: unused variable: `home`
Dec 18 06:51:26.548 INFO [stderr]    --> src/main.rs:435:9
Dec 18 06:51:26.548 INFO [stderr]     |
Dec 18 06:51:26.548 INFO [stderr] 435 |     let home = IpAddrStruct {
Dec 18 06:51:26.548 INFO [stderr]     |         ^^^^ help: consider using `_home` instead
Dec 18 06:51:26.548 INFO [stderr] 
Dec 18 06:51:26.548 INFO [stderr] warning: unused variable: `loopback`
Dec 18 06:51:26.548 INFO [stderr]    --> src/main.rs:440:9
Dec 18 06:51:26.548 INFO [stderr]     |
Dec 18 06:51:26.548 INFO [stderr] 440 |     let loopback = IpAddrStruct {
Dec 18 06:51:26.548 INFO [stderr]     |         ^^^^^^^^ help: consider using `_loopback` instead
Dec 18 06:51:26.548 INFO [stderr] 
Dec 18 06:51:26.548 INFO [stderr] warning: unused variable: `h`
Dec 18 06:51:26.548 INFO [stderr]    --> src/main.rs:445:9
Dec 18 06:51:26.548 INFO [stderr]     |
Dec 18 06:51:26.548 INFO [stderr] 445 |     let h = IpAddrS::V4(String::from("127.0.0.1"));
Dec 18 06:51:26.548 INFO [stderr]     |         ^ help: consider using `_h` instead
Dec 18 06:51:26.548 INFO [stderr] 
Dec 18 06:51:26.548 INFO [stderr] warning: unused variable: `lb`
Dec 18 06:51:26.548 INFO [stderr]    --> src/main.rs:446:9
Dec 18 06:51:26.548 INFO [stderr]     |
Dec 18 06:51:26.548 INFO [stderr] 446 |     let lb = IpAddrS::V6(String::from("::1"));
Dec 18 06:51:26.549 INFO [stderr]     |         ^^ help: consider using `_lb` instead
Dec 18 06:51:26.549 INFO [stderr] 
Dec 18 06:51:26.549 INFO [stderr] warning: unused variable: `h2`
Dec 18 06:51:26.549 INFO [stderr]    --> src/main.rs:448:9
Dec 18 06:51:26.549 INFO [stderr]     |
Dec 18 06:51:26.549 INFO [stderr] 448 |     let h2  = IpAddr::V4(127, 0, 0, 1);
Dec 18 06:51:26.549 INFO [stderr]     |         ^^ help: consider using `_h2` instead
Dec 18 06:51:26.549 INFO [stderr] 
Dec 18 06:51:26.549 INFO [stderr] warning: unused variable: `ip_type`
Dec 18 06:51:26.549 INFO [stderr]    --> src/main.rs:458:10
Dec 18 06:51:26.549 INFO [stderr]     |
Dec 18 06:51:26.549 INFO [stderr] 458 | fn route(ip_type: IpAddrKind) {}
Dec 18 06:51:26.549 INFO [stderr]     |          ^^^^^^^ help: consider using `_ip_type` instead
Dec 18 06:51:26.549 INFO [stderr] 
Dec 18 06:51:26.549 INFO [stderr] warning: unused variable: `some_number`
Dec 18 06:51:26.549 INFO [stderr]    --> src/main.rs:489:9
Dec 18 06:51:26.549 INFO [stderr]     |
Dec 18 06:51:26.549 INFO [stderr] 489 |     let some_number = Some(5);
Dec 18 06:51:26.549 INFO [stderr]     |         ^^^^^^^^^^^ help: consider using `_some_number` instead
Dec 18 06:51:26.549 INFO [stderr] 
Dec 18 06:51:26.549 INFO [stderr] warning: unused variable: `some_string`
Dec 18 06:51:26.549 INFO [stderr]    --> src/main.rs:490:9
Dec 18 06:51:26.549 INFO [stderr]     |
Dec 18 06:51:26.549 INFO [stderr] 490 |     let some_string = Some("a string");
Dec 18 06:51:26.549 INFO [stderr]     |         ^^^^^^^^^^^ help: consider using `_some_string` instead
Dec 18 06:51:26.549 INFO [stderr] 
Dec 18 06:51:26.549 INFO [stderr] warning: unused variable: `absent_number`
Dec 18 06:51:26.549 INFO [stderr]    --> src/main.rs:492:9
Dec 18 06:51:26.549 INFO [stderr]     |
Dec 18 06:51:26.549 INFO [stderr] 492 |     let absent_number: Option<i32> = None;
Dec 18 06:51:26.549 INFO [stderr]     |         ^^^^^^^^^^^^^ help: consider using `_absent_number` instead
Dec 18 06:51:26.549 INFO [stderr] 
Dec 18 06:51:26.549 INFO [stderr] warning: unused variable: `sum`
Dec 18 06:51:26.549 INFO [stderr]    --> src/main.rs:499:9
Dec 18 06:51:26.549 INFO [stderr]     |
Dec 18 06:51:26.549 INFO [stderr] 499 |     let sum = y.unwrap() + x;
Dec 18 06:51:26.549 INFO [stderr]     |         ^^^ help: consider using `_sum` instead
Dec 18 06:51:26.549 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: constant item is never used: `MAX_POINTS`
Dec 18 06:51:26.578 INFO [stderr]   --> src/main.rs:11:1
Dec 18 06:51:26.578 INFO [stderr]    |
Dec 18 06:51:26.578 INFO [stderr] 11 | const MAX_POINTS: u32 = 100_000;
Dec 18 06:51:26.578 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr]    |
Dec 18 06:51:26.578 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `main_old`
Dec 18 06:51:26.578 INFO [stderr]   --> src/main.rs:14:1
Dec 18 06:51:26.578 INFO [stderr]    |
Dec 18 06:51:26.578 INFO [stderr] 14 | fn main_old() {    
Dec 18 06:51:26.578 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `another_function`
Dec 18 06:51:26.578 INFO [stderr]   --> src/main.rs:79:1
Dec 18 06:51:26.578 INFO [stderr]    |
Dec 18 06:51:26.578 INFO [stderr] 79 | fn another_function(a0: i32, a1: i32, a2: i32) {
Dec 18 06:51:26.578 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `five`
Dec 18 06:51:26.578 INFO [stderr]   --> src/main.rs:85:1
Dec 18 06:51:26.578 INFO [stderr]    |
Dec 18 06:51:26.578 INFO [stderr] 85 | fn five() -> i32 {
Dec 18 06:51:26.578 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `plus_one`
Dec 18 06:51:26.578 INFO [stderr]   --> src/main.rs:89:1
Dec 18 06:51:26.578 INFO [stderr]    |
Dec 18 06:51:26.578 INFO [stderr] 89 | fn plus_one(x: i32) -> i32 {
Dec 18 06:51:26.578 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `flow_control`
Dec 18 06:51:26.578 INFO [stderr]   --> src/main.rs:93:1
Dec 18 06:51:26.578 INFO [stderr]    |
Dec 18 06:51:26.578 INFO [stderr] 93 | fn flow_control() {
Dec 18 06:51:26.578 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `ownership`
Dec 18 06:51:26.578 INFO [stderr]    --> src/main.rs:146:1
Dec 18 06:51:26.578 INFO [stderr]     |
Dec 18 06:51:26.578 INFO [stderr] 146 | fn ownership() {
Dec 18 06:51:26.578 INFO [stderr]     | ^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `takes_ownership`
Dec 18 06:51:26.578 INFO [stderr]    --> src/main.rs:171:1
Dec 18 06:51:26.578 INFO [stderr]     |
Dec 18 06:51:26.578 INFO [stderr] 171 | fn takes_ownership(some_string: String) {
Dec 18 06:51:26.578 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `makes_copy`
Dec 18 06:51:26.578 INFO [stderr]    --> src/main.rs:176:1
Dec 18 06:51:26.578 INFO [stderr]     |
Dec 18 06:51:26.578 INFO [stderr] 176 | fn makes_copy(some_integer: i32) {
Dec 18 06:51:26.578 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `gives_ownership`
Dec 18 06:51:26.578 INFO [stderr]    --> src/main.rs:181:1
Dec 18 06:51:26.578 INFO [stderr]     |
Dec 18 06:51:26.578 INFO [stderr] 181 | fn gives_ownership() -> String {
Dec 18 06:51:26.578 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `takes_and_gives_back`
Dec 18 06:51:26.578 INFO [stderr]    --> src/main.rs:186:1
Dec 18 06:51:26.578 INFO [stderr]     |
Dec 18 06:51:26.578 INFO [stderr] 186 | fn takes_and_gives_back(a_string: String) -> String {
Dec 18 06:51:26.578 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `calculate_length`
Dec 18 06:51:26.578 INFO [stderr]    --> src/main.rs:190:1
Dec 18 06:51:26.578 INFO [stderr]     |
Dec 18 06:51:26.578 INFO [stderr] 190 | fn calculate_length(s: String) -> (String, usize) {
Dec 18 06:51:26.578 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `references`
Dec 18 06:51:26.578 INFO [stderr]    --> src/main.rs:197:1
Dec 18 06:51:26.578 INFO [stderr]     |
Dec 18 06:51:26.578 INFO [stderr] 197 | fn references() {
Dec 18 06:51:26.578 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 18 06:51:26.578 INFO [stderr] 
Dec 18 06:51:26.578 INFO [stderr] warning: function is never used: `calculate_length_ref`
Dec 18 06:51:26.578 INFO [stderr]    --> src/main.rs:209:1
Dec 18 06:51:26.578 INFO [stderr]     |
Dec 18 06:51:26.578 INFO [stderr] 209 | fn calculate_length_ref(s: &String) -> usize {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `mut_references`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:215:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 215 | fn mut_references() {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `change`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:222:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 222 | fn change(some_string: &mut String) {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `no_dangle`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:227:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 227 | fn no_dangle() -> String {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `word_runner`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:238:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 238 | fn word_runner() {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `first_word`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:264:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 264 | fn first_word(s: &String) -> usize {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `first_word_slice`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:277:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 277 | fn first_word_slice(s: &String) -> &str { //string slice written as &str
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `first_word_improved`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:288:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 288 | fn first_word_improved(s: &str) -> &str {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: struct is never constructed: `User`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:299:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 299 | struct User {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `my_structs`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:306:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 306 | fn my_structs() {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `build_user`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:343:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 343 | fn build_user(email: String, username: String) -> User {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `test_build_user`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:353:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 353 | fn test_build_user() {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: struct is never constructed: `Color`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:362:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 362 | struct Color(i32, i32, i32); // structs without named fields.
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: function is never used: `test_tuple_structs`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:364:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 364 | fn test_tuple_structs() {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: struct is never constructed: `Rectangle`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:369:1
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 369 | struct Rectangle {
Dec 18 06:51:26.579 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: method is never used: `area`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:378:5
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 378 |     fn area(&self) -> u32 {
Dec 18 06:51:26.579 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.579 INFO [stderr] warning: method is never used: `square`
Dec 18 06:51:26.579 INFO [stderr]    --> src/main.rs:383:5
Dec 18 06:51:26.579 INFO [stderr]     |
Dec 18 06:51:26.579 INFO [stderr] 383 |     fn square(size: u32) -> Rectangle {
Dec 18 06:51:26.579 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.579 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: function is never used: `main_old2`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:388:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 388 | fn main_old2() {
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: function is never used: `rectangle_examples`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:392:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 392 | fn rectangle_examples() {
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: function is never used: `testing_referencing`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:407:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 407 | fn testing_referencing(rect: &Rectangle) {
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: enum is never used: `IpAddrKind`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:411:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 411 | enum IpAddrKind {
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: struct is never constructed: `IpAddrStruct`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:416:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 416 | struct IpAddrStruct {  
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: enum is never used: `IpAddrS`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:421:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 421 | enum IpAddrS {
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: enum is never used: `IpAddr`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:426:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 426 | enum IpAddr {
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: function is never used: `main_old3`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:431:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 431 | fn main_old3() {
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: function is never used: `route`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:458:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 458 | fn route(ip_type: IpAddrKind) {}
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: enum is never used: `Message`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:460:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 460 | enum Message {
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: struct is never constructed: `QuitMessage`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:467:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 467 | struct QuitMessage; // unit struct
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: struct is never constructed: `MoveMessage`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:468:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 468 | struct MoveMessage {
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: struct is never constructed: `WriteMessage`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:473:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 473 | struct WriteMessage(String);
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: struct is never constructed: `ChangeColorMessage`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:474:1
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 474 | struct ChangeColorMessage(i32, i32, i32);
Dec 18 06:51:26.580 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.580 INFO [stderr] 
Dec 18 06:51:26.580 INFO [stderr] warning: method is never used: `call`
Dec 18 06:51:26.580 INFO [stderr]    --> src/main.rs:477:5
Dec 18 06:51:26.580 INFO [stderr]     |
Dec 18 06:51:26.580 INFO [stderr] 477 |     fn call(&self) {
Dec 18 06:51:26.580 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 18 06:51:26.581 INFO [stderr] 
Dec 18 06:51:26.581 INFO [stderr] warning: function is never used: `enum_stuff`
Dec 18 06:51:26.581 INFO [stderr]    --> src/main.rs:482:1
Dec 18 06:51:26.581 INFO [stderr]     |
Dec 18 06:51:26.581 INFO [stderr] 482 | fn enum_stuff() {
Dec 18 06:51:26.581 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 18 06:51:26.581 INFO [stderr] 
Dec 18 06:51:26.581 INFO [stderr] warning: function is never used: `optional_enum`
Dec 18 06:51:26.581 INFO [stderr]    --> src/main.rs:488:1
Dec 18 06:51:26.581 INFO [stderr]     |
Dec 18 06:51:26.581 INFO [stderr] 488 | fn optional_enum() {
Dec 18 06:51:26.581 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.581 INFO [stderr] 
Dec 18 06:51:26.581 INFO [stderr] warning: enum is never used: `UsState`
Dec 18 06:51:26.581 INFO [stderr]    --> src/main.rs:505:1
Dec 18 06:51:26.581 INFO [stderr]     |
Dec 18 06:51:26.581 INFO [stderr] 505 | enum UsState {
Dec 18 06:51:26.581 INFO [stderr]     | ^^^^^^^^^^^^
Dec 18 06:51:26.581 INFO [stderr] 
Dec 18 06:51:26.581 INFO [stderr] warning: enum is never used: `Coin`
Dec 18 06:51:26.581 INFO [stderr]    --> src/main.rs:510:1
Dec 18 06:51:26.581 INFO [stderr]     |
Dec 18 06:51:26.581 INFO [stderr] 510 | enum Coin { 
Dec 18 06:51:26.581 INFO [stderr]     | ^^^^^^^^^
Dec 18 06:51:26.581 INFO [stderr] 
Dec 18 06:51:26.581 INFO [stderr] warning: function is never used: `value_in_cents`
Dec 18 06:51:26.581 INFO [stderr]    --> src/main.rs:517:1
Dec 18 06:51:26.581 INFO [stderr]     |
Dec 18 06:51:26.581 INFO [stderr] 517 | fn value_in_cents(coin: Coin) -> u32 {
Dec 18 06:51:26.581 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.581 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: constant item is never used: `MAX_POINTS`
Dec 18 06:51:26.645 INFO [stderr]   --> src/main.rs:11:1
Dec 18 06:51:26.645 INFO [stderr]    |
Dec 18 06:51:26.645 INFO [stderr] 11 | const MAX_POINTS: u32 = 100_000;
Dec 18 06:51:26.645 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr]    |
Dec 18 06:51:26.645 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `main_old`
Dec 18 06:51:26.645 INFO [stderr]   --> src/main.rs:14:1
Dec 18 06:51:26.645 INFO [stderr]    |
Dec 18 06:51:26.645 INFO [stderr] 14 | fn main_old() {    
Dec 18 06:51:26.645 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `another_function`
Dec 18 06:51:26.645 INFO [stderr]   --> src/main.rs:79:1
Dec 18 06:51:26.645 INFO [stderr]    |
Dec 18 06:51:26.645 INFO [stderr] 79 | fn another_function(a0: i32, a1: i32, a2: i32) {
Dec 18 06:51:26.645 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `five`
Dec 18 06:51:26.645 INFO [stderr]   --> src/main.rs:85:1
Dec 18 06:51:26.645 INFO [stderr]    |
Dec 18 06:51:26.645 INFO [stderr] 85 | fn five() -> i32 {
Dec 18 06:51:26.645 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `plus_one`
Dec 18 06:51:26.645 INFO [stderr]   --> src/main.rs:89:1
Dec 18 06:51:26.645 INFO [stderr]    |
Dec 18 06:51:26.645 INFO [stderr] 89 | fn plus_one(x: i32) -> i32 {
Dec 18 06:51:26.645 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `flow_control`
Dec 18 06:51:26.645 INFO [stderr]   --> src/main.rs:93:1
Dec 18 06:51:26.645 INFO [stderr]    |
Dec 18 06:51:26.645 INFO [stderr] 93 | fn flow_control() {
Dec 18 06:51:26.645 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `ownership`
Dec 18 06:51:26.645 INFO [stderr]    --> src/main.rs:146:1
Dec 18 06:51:26.645 INFO [stderr]     |
Dec 18 06:51:26.645 INFO [stderr] 146 | fn ownership() {
Dec 18 06:51:26.645 INFO [stderr]     | ^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `takes_ownership`
Dec 18 06:51:26.645 INFO [stderr]    --> src/main.rs:171:1
Dec 18 06:51:26.645 INFO [stderr]     |
Dec 18 06:51:26.645 INFO [stderr] 171 | fn takes_ownership(some_string: String) {
Dec 18 06:51:26.645 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `makes_copy`
Dec 18 06:51:26.645 INFO [stderr]    --> src/main.rs:176:1
Dec 18 06:51:26.645 INFO [stderr]     |
Dec 18 06:51:26.645 INFO [stderr] 176 | fn makes_copy(some_integer: i32) {
Dec 18 06:51:26.645 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `gives_ownership`
Dec 18 06:51:26.645 INFO [stderr]    --> src/main.rs:181:1
Dec 18 06:51:26.645 INFO [stderr]     |
Dec 18 06:51:26.645 INFO [stderr] 181 | fn gives_ownership() -> String {
Dec 18 06:51:26.645 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `takes_and_gives_back`
Dec 18 06:51:26.645 INFO [stderr]    --> src/main.rs:186:1
Dec 18 06:51:26.645 INFO [stderr]     |
Dec 18 06:51:26.645 INFO [stderr] 186 | fn takes_and_gives_back(a_string: String) -> String {
Dec 18 06:51:26.645 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `calculate_length`
Dec 18 06:51:26.645 INFO [stderr]    --> src/main.rs:190:1
Dec 18 06:51:26.645 INFO [stderr]     |
Dec 18 06:51:26.645 INFO [stderr] 190 | fn calculate_length(s: String) -> (String, usize) {
Dec 18 06:51:26.645 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.645 INFO [stderr] 
Dec 18 06:51:26.645 INFO [stderr] warning: function is never used: `references`
Dec 18 06:51:26.645 INFO [stderr]    --> src/main.rs:197:1
Dec 18 06:51:26.645 INFO [stderr]     |
Dec 18 06:51:26.645 INFO [stderr] 197 | fn references() {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `calculate_length_ref`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:209:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 209 | fn calculate_length_ref(s: &String) -> usize {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `mut_references`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:215:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 215 | fn mut_references() {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `change`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:222:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 222 | fn change(some_string: &mut String) {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `no_dangle`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:227:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 227 | fn no_dangle() -> String {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `word_runner`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:238:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 238 | fn word_runner() {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `first_word`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:264:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 264 | fn first_word(s: &String) -> usize {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `first_word_slice`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:277:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 277 | fn first_word_slice(s: &String) -> &str { //string slice written as &str
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `first_word_improved`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:288:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 288 | fn first_word_improved(s: &str) -> &str {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: struct is never constructed: `User`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:299:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 299 | struct User {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `my_structs`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:306:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 306 | fn my_structs() {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `build_user`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:343:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 343 | fn build_user(email: String, username: String) -> User {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `test_build_user`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:353:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 353 | fn test_build_user() {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: struct is never constructed: `Color`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:362:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 362 | struct Color(i32, i32, i32); // structs without named fields.
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: function is never used: `test_tuple_structs`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:364:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 364 | fn test_tuple_structs() {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: struct is never constructed: `Rectangle`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:369:1
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.646 INFO [stderr] 369 | struct Rectangle {
Dec 18 06:51:26.646 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 18 06:51:26.646 INFO [stderr] 
Dec 18 06:51:26.646 INFO [stderr] warning: method is never used: `area`
Dec 18 06:51:26.646 INFO [stderr]    --> src/main.rs:378:5
Dec 18 06:51:26.646 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 378 |     fn area(&self) -> u32 {
Dec 18 06:51:26.647 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: method is never used: `square`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:383:5
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 383 |     fn square(size: u32) -> Rectangle {
Dec 18 06:51:26.647 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: function is never used: `main_old2`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:388:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 388 | fn main_old2() {
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: function is never used: `rectangle_examples`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:392:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 392 | fn rectangle_examples() {
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: function is never used: `testing_referencing`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:407:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 407 | fn testing_referencing(rect: &Rectangle) {
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: enum is never used: `IpAddrKind`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:411:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 411 | enum IpAddrKind {
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: struct is never constructed: `IpAddrStruct`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:416:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 416 | struct IpAddrStruct {  
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: enum is never used: `IpAddrS`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:421:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 421 | enum IpAddrS {
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: enum is never used: `IpAddr`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:426:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 426 | enum IpAddr {
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: function is never used: `main_old3`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:431:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 431 | fn main_old3() {
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: function is never used: `route`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:458:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 458 | fn route(ip_type: IpAddrKind) {}
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: enum is never used: `Message`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:460:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 460 | enum Message {
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: struct is never constructed: `QuitMessage`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:467:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 467 | struct QuitMessage; // unit struct
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: struct is never constructed: `MoveMessage`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:468:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 468 | struct MoveMessage {
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: struct is never constructed: `WriteMessage`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:473:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 473 | struct WriteMessage(String);
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: struct is never constructed: `ChangeColorMessage`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:474:1
Dec 18 06:51:26.647 INFO [stderr]     |
Dec 18 06:51:26.647 INFO [stderr] 474 | struct ChangeColorMessage(i32, i32, i32);
Dec 18 06:51:26.647 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.647 INFO [stderr] 
Dec 18 06:51:26.647 INFO [stderr] warning: method is never used: `call`
Dec 18 06:51:26.647 INFO [stderr]    --> src/main.rs:477:5
Dec 18 06:51:26.648 INFO [stderr]     |
Dec 18 06:51:26.648 INFO [stderr] 477 |     fn call(&self) {
Dec 18 06:51:26.648 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 18 06:51:26.648 INFO [stderr] 
Dec 18 06:51:26.648 INFO [stderr] warning: function is never used: `enum_stuff`
Dec 18 06:51:26.648 INFO [stderr]    --> src/main.rs:482:1
Dec 18 06:51:26.648 INFO [stderr]     |
Dec 18 06:51:26.648 INFO [stderr] 482 | fn enum_stuff() {
Dec 18 06:51:26.648 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 18 06:51:26.648 INFO [stderr] 
Dec 18 06:51:26.648 INFO [stderr] warning: function is never used: `optional_enum`
Dec 18 06:51:26.648 INFO [stderr]    --> src/main.rs:488:1
Dec 18 06:51:26.648 INFO [stderr]     |
Dec 18 06:51:26.648 INFO [stderr] 488 | fn optional_enum() {
Dec 18 06:51:26.648 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.648 INFO [stderr] 
Dec 18 06:51:26.648 INFO [stderr] warning: enum is never used: `UsState`
Dec 18 06:51:26.648 INFO [stderr]    --> src/main.rs:505:1
Dec 18 06:51:26.648 INFO [stderr]     |
Dec 18 06:51:26.648 INFO [stderr] 505 | enum UsState {
Dec 18 06:51:26.648 INFO [stderr]     | ^^^^^^^^^^^^
Dec 18 06:51:26.648 INFO [stderr] 
Dec 18 06:51:26.648 INFO [stderr] warning: enum is never used: `Coin`
Dec 18 06:51:26.648 INFO [stderr]    --> src/main.rs:510:1
Dec 18 06:51:26.648 INFO [stderr]     |
Dec 18 06:51:26.648 INFO [stderr] 510 | enum Coin { 
Dec 18 06:51:26.648 INFO [stderr]     | ^^^^^^^^^
Dec 18 06:51:26.648 INFO [stderr] 
Dec 18 06:51:26.648 INFO [stderr] warning: function is never used: `value_in_cents`
Dec 18 06:51:26.648 INFO [stderr]    --> src/main.rs:517:1
Dec 18 06:51:26.648 INFO [stderr]     |
Dec 18 06:51:26.648 INFO [stderr] 517 | fn value_in_cents(coin: Coin) -> u32 {
Dec 18 06:51:26.648 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:51:26.648 INFO [stderr] 
Dec 18 06:51:26.715 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
Dec 18 06:51:27.436 INFO running `"docker" "inspect" "669c43b6f0cfb6462f2efedb1b882a14b9aba3c434778bf72904253a289942ca"`
Dec 18 06:51:27.806 INFO running `"docker" "rm" "-f" "669c43b6f0cfb6462f2efedb1b882a14b9aba3c434778bf72904253a289942ca"`
Dec 18 06:51:28.072 INFO [stdout] 669c43b6f0cfb6462f2efedb1b882a14b9aba3c434778bf72904253a289942ca