[INFO] updating cached repository luiz-antonio/RustSample
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/luiz-antonio/RustSample
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/luiz-antonio/RustSample" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/luiz-antonio/RustSample"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/luiz-antonio/RustSample'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/luiz-antonio/RustSample" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/luiz-antonio/RustSample"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/luiz-antonio/RustSample'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3fa2106873d82c9816a47a9b7bea74bbc98637d1
[INFO] sha for GitHub repo luiz-antonio/RustSample: 3fa2106873d82c9816a47a9b7bea74bbc98637d1
[INFO] validating manifest of luiz-antonio/RustSample on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of luiz-antonio/RustSample on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing luiz-antonio/RustSample
[INFO] finished frobbing luiz-antonio/RustSample
[INFO] frobbed toml for luiz-antonio/RustSample written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/luiz-antonio/RustSample/Cargo.toml
[INFO] started frobbing luiz-antonio/RustSample
[INFO] finished frobbing luiz-antonio/RustSample
[INFO] frobbed toml for luiz-antonio/RustSample written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/luiz-antonio/RustSample/Cargo.toml
[INFO] crate luiz-antonio/RustSample already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking luiz-antonio/RustSample against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-0/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/luiz-antonio/RustSample:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f0b476f890650e34a17eae5166c939d46bf5ec423c3a1c3eb91b9d63cc9814ed
[INFO] running `"docker" "start" "-a" "f0b476f890650e34a17eae5166c939d46bf5ec423c3a1c3eb91b9d63cc9814ed"`
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking RustSample v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type `Person_rc` should have an upper camel case name
[INFO] [stderr]    --> src/main.rs:627:8
[INFO] [stderr]     |
[INFO] [stderr] 627 | struct Person_rc{
[INFO] [stderr]     |        ^^^^^^^^^ help: convert the identifier to upper camel case: `PersonRc`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `Person_arc` should have an upper camel case name
[INFO] [stderr]    --> src/main.rs:651:8
[INFO] [stderr]     |
[INFO] [stderr] 651 | struct Person_arc{
[INFO] [stderr]     |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `PersonArc`
[INFO] [stderr] 
[INFO] [stderr] warning: type `Person_mut` should have an upper camel case name
[INFO] [stderr]    --> src/main.rs:675:8
[INFO] [stderr]     |
[INFO] [stderr] 675 | struct Person_mut {
[INFO] [stderr]     |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `PersonMut`
[INFO] [stderr] 
[INFO] [stderr] warning: type `Person_rc` should have an upper camel case name
[INFO] [stderr]    --> src/main.rs:627:8
[INFO] [stderr]     |
[INFO] [stderr] 627 | struct Person_rc{
[INFO] [stderr]     |        ^^^^^^^^^ help: convert the identifier to upper camel case: `PersonRc`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `Person_arc` should have an upper camel case name
[INFO] [stderr]    --> src/main.rs:651:8
[INFO] [stderr]     |
[INFO] [stderr] 651 | struct Person_arc{
[INFO] [stderr]     |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `PersonArc`
[INFO] [stderr] 
[INFO] [stderr] warning: type `Person_mut` should have an upper camel case name
[INFO] [stderr]    --> src/main.rs:675:8
[INFO] [stderr]     |
[INFO] [stderr] 675 | struct Person_mut {
[INFO] [stderr]     |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `PersonMut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l`
[INFO] [stderr]    --> src/main.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |     let l = Line { start: p, end: p2 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_l`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/main.rs:192:9
[INFO] [stderr]     |
[INFO] [stderr] 192 |     let value = unsafe { iof.i };
[INFO] [stderr]     |         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]    --> src/main.rs:300:9
[INFO] [stderr]     |
[INFO] [stderr] 300 |     let u: &str = &letters;
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/main.rs:325:10
[INFO] [stderr]     |
[INFO] [stderr] 325 |     let (a, b) = sp;
[INFO] [stderr]     |          ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:325:13
[INFO] [stderr]     |
[INFO] [stderr] 325 |     let (a, b) = sp;
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/main.rs:332:11
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stderr]     |           ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:332:14
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stderr]     |              ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/main.rs:332:19
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stderr]     |                   ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/main.rs:332:22
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stderr]     |                      ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]    --> src/main.rs:345:9
[INFO] [stderr]     |
[INFO] [stderr] 345 |         z @ 9...11 => "lots of",
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/main.rs:372:9
[INFO] [stderr]     |
[INFO] [stderr] 372 |     let a = Point2 { x: 0, y: 0 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:373:9
[INFO] [stderr]     |
[INFO] [stderr] 373 |     let b = Point2 { x: 1.2, y: 3.4 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/main.rs:374:9
[INFO] [stderr]     |
[INFO] [stderr] 374 |     let c: Point2<u16> = Point2 { x: 0, y: 4 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/main.rs:375:9
[INFO] [stderr]     |
[INFO] [stderr] 375 |     let d: Point2<f64> = Point2 { x: 1.2, y: 3.4 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:377:9
[INFO] [stderr]     |
[INFO] [stderr] 377 |     let e: Point3<u16, i32> = Point3 { x: 0, y: 4 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `borrow_two`
[INFO] [stderr]    --> src/main.rs:436:9
[INFO] [stderr]     |
[INFO] [stderr] 436 |     let borrow_two = &mut two;
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_borrow_two`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tesla`
[INFO] [stderr]    --> src/main.rs:622:9
[INFO] [stderr]     |
[INFO] [stderr] 622 |     let tesla = Company {name: String::from("Tesla"), ceo: &boss};
[INFO] [stderr]     |         ^^^^^ help: consider prefixing with an underscore: `_tesla`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l`
[INFO] [stderr]    --> src/main.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 |     let l = Line { start: p, end: p2 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_l`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/main.rs:192:9
[INFO] [stderr]     |
[INFO] [stderr] 192 |     let value = unsafe { iof.i };
[INFO] [stderr]     |         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]    --> src/main.rs:300:9
[INFO] [stderr]     |
[INFO] [stderr] 300 |     let u: &str = &letters;
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/main.rs:325:10
[INFO] [stderr]     |
[INFO] [stderr] 325 |     let (a, b) = sp;
[INFO] [stderr]     |          ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:325:13
[INFO] [stderr]     |
[INFO] [stderr] 325 |     let (a, b) = sp;
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/main.rs:332:11
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stderr]     |           ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:332:14
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stderr]     |              ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/main.rs:332:19
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stderr]     |                   ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/main.rs:332:22
[INFO] [stderr]     |
[INFO] [stderr] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stderr]     |                      ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]    --> src/main.rs:345:9
[INFO] [stderr]     |
[INFO] [stderr] 345 |         z @ 9...11 => "lots of",
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/main.rs:372:9
[INFO] [stderr]     |
[INFO] [stderr] 372 |     let a = Point2 { x: 0, y: 0 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:373:9
[INFO] [stderr]     |
[INFO] [stderr] 373 |     let b = Point2 { x: 1.2, y: 3.4 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/main.rs:374:9
[INFO] [stderr]     |
[INFO] [stderr] 374 |     let c: Point2<u16> = Point2 { x: 0, y: 4 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]    --> src/main.rs:375:9
[INFO] [stderr]     |
[INFO] [stderr] 375 |     let d: Point2<f64> = Point2 { x: 1.2, y: 3.4 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:377:9
[INFO] [stderr]     |
[INFO] [stderr] 377 |     let e: Point3<u16, i32> = Point3 { x: 0, y: 4 };
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `borrow_two`
[INFO] [stderr]    --> src/main.rs:436:9
[INFO] [stderr]     |
[INFO] [stderr] 436 |     let borrow_two = &mut two;
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_borrow_two`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tesla`
[INFO] [stderr]    --> src/main.rs:622:9
[INFO] [stderr]     |
[INFO] [stderr] 622 |     let tesla = Company {name: String::from("Tesla"), ceo: &boss};
[INFO] [stderr]     |         ^^^^^ help: consider prefixing with an underscore: `_tesla`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/main.rs:190:5
[INFO] [stderr]     |
[INFO] [stderr] 190 |     unsafe { iof.i = 42 };
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_unsafe)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MEANING_OF_LIFE`
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | const MEANING_OF_LIFE: u8 = 42; // substitui todos os MEANING_OF_LIFE do codigo por 42
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `MYSTATIC`
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | static MYSTATIC: u8 = 123; // tem endereço de
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `typefun`
[INFO] [stderr]  --> src/main.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn typefun() {
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `if_statement`
[INFO] [stderr]   --> src/main.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn if_statement() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `while_and_loop`
[INFO] [stderr]   --> src/main.rs:79:1
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn while_and_loop() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `for_loop`
[INFO] [stderr]   --> src/main.rs:98:1
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn for_loop() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `match_statement`
[INFO] [stderr]    --> src/main.rs:107:1
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn match_statement() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/main.rs:190:5
[INFO] [stderr]     |
[INFO] [stderr] 190 |     unsafe { iof.i = 42 };
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_unsafe)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MEANING_OF_LIFE`
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | const MEANING_OF_LIFE: u8 = 42; // substitui todos os MEANING_OF_LIFE do codigo por 42
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static item is never used: `MYSTATIC`
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | static MYSTATIC: u8 = 123; // tem endereço de
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `typefun`
[INFO] [stderr]  --> src/main.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn typefun() {
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `if_statement`
[INFO] [stderr]   --> src/main.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn if_statement() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `while_and_loop`
[INFO] [stderr]   --> src/main.rs:79:1
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn while_and_loop() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `for_loop`
[INFO] [stderr]   --> src/main.rs:98:1
[INFO] [stderr]    |
[INFO] [stderr] 98 | fn for_loop() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `match_statement`
[INFO] [stderr]    --> src/main.rs:107:1
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn match_statement() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Line`
[INFO] [stderr]    --> src/main.rs:126:1
[INFO] [stderr]     |
[INFO] [stderr] 126 | struct Line {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `structures`
[INFO] [stderr]    --> src/main.rs:131:1
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn structures() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Color`
[INFO] [stderr]    --> src/main.rs:138:1
[INFO] [stderr]     |
[INFO] [stderr] 138 | enum Color {
[INFO] [stderr]     | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enums`
[INFO] [stderr]    --> src/main.rs:151:1
[INFO] [stderr]     |
[INFO] [stderr] 151 | fn enums() {
[INFO] [stderr]     | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: union is never used: `IntOrFloat`
[INFO] [stderr]    --> src/main.rs:174:1
[INFO] [stderr]     |
[INFO] [stderr] 174 | union IntOrFloat {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `process_value`
[INFO] [stderr]    --> src/main.rs:179:1
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn process_value(iof: IntOrFloat) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unions`
[INFO] [stderr]    --> src/main.rs:188:1
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn unions() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `options`
[INFO] [stderr]    --> src/main.rs:197:1
[INFO] [stderr]     |
[INFO] [stderr] 197 | fn options() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `arrays`
[INFO] [stderr]    --> src/main.rs:214:1
[INFO] [stderr]     |
[INFO] [stderr] 214 | fn arrays() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vectors`
[INFO] [stderr]    --> src/main.rs:240:1
[INFO] [stderr]     |
[INFO] [stderr] 240 | fn vectors() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `use_slice`
[INFO] [stderr]    --> src/main.rs:269:1
[INFO] [stderr]     |
[INFO] [stderr] 269 | fn use_slice(slice: &mut [i32]) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `slices`
[INFO] [stderr]    --> src/main.rs:274:1
[INFO] [stderr]     |
[INFO] [stderr] 274 | fn slices() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `strings`
[INFO] [stderr]    --> src/main.rs:281:1
[INFO] [stderr]     |
[INFO] [stderr] 281 | fn strings() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_and_product`
[INFO] [stderr]    --> src/main.rs:313:1
[INFO] [stderr]     |
[INFO] [stderr] 313 | fn sum_and_product(x: i32, y: i32) -> (i32, i32) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tuples`
[INFO] [stderr]    --> src/main.rs:317:1
[INFO] [stderr]     |
[INFO] [stderr] 317 | fn tuples() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `how_many`
[INFO] [stderr]    --> src/main.rs:341:1
[INFO] [stderr]     |
[INFO] [stderr] 341 | fn how_many(x: i32) -> &'static str {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pattern_matching`
[INFO] [stderr]    --> src/main.rs:350:1
[INFO] [stderr]     |
[INFO] [stderr] 350 | fn pattern_matching() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point2`
[INFO] [stderr]    --> src/main.rs:363:1
[INFO] [stderr]     |
[INFO] [stderr] 363 | struct Point2<T> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point3`
[INFO] [stderr]    --> src/main.rs:367:1
[INFO] [stderr]     |
[INFO] [stderr] 367 | struct Point3<T, V> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generics`
[INFO] [stderr]    --> src/main.rs:371:1
[INFO] [stderr]     |
[INFO] [stderr] 371 | fn generics() {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_value`
[INFO] [stderr]    --> src/main.rs:379:1
[INFO] [stderr]     |
[INFO] [stderr] 379 | fn print_value(x: i32) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `increase`
[INFO] [stderr]    --> src/main.rs:382:1
[INFO] [stderr]     |
[INFO] [stderr] 382 | fn increase(x: &mut i32) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `product`
[INFO] [stderr]    --> src/main.rs:385:1
[INFO] [stderr]     |
[INFO] [stderr] 385 | fn product(x: i32, y: i32) -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `functions`
[INFO] [stderr]    --> src/main.rs:388:1
[INFO] [stderr]     |
[INFO] [stderr] 388 | fn functions() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point4`
[INFO] [stderr]    --> src/main.rs:401:1
[INFO] [stderr]     |
[INFO] [stderr] 401 | struct Point4 {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Line4`
[INFO] [stderr]    --> src/main.rs:405:1
[INFO] [stderr]     |
[INFO] [stderr] 405 | struct Line4 {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]    --> src/main.rs:410:5
[INFO] [stderr]     |
[INFO] [stderr] 410 |     fn len(&self) -> f64 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `methods`
[INFO] [stderr]    --> src/main.rs:416:1
[INFO] [stderr]     |
[INFO] [stderr] 416 | fn methods() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `closures`
[INFO] [stderr]    --> src/main.rs:423:1
[INFO] [stderr]     |
[INFO] [stderr] 423 | fn closures() {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hof`
[INFO] [stderr]    --> src/main.rs:444:1
[INFO] [stderr]     |
[INFO] [stderr] 444 | fn hof() {
[INFO] [stderr]     | ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `traits`
[INFO] [stderr]    --> src/main.rs:513:1
[INFO] [stderr]     |
[INFO] [stderr] 513 | fn traits() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `overloading`
[INFO] [stderr]    --> src/main.rs:536:1
[INFO] [stderr]     |
[INFO] [stderr] 536 | fn overloading() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_it`
[INFO] [stderr]    --> src/main.rs:561:1
[INFO] [stderr]     |
[INFO] [stderr] 561 | fn print_it<T: Printable>(z: T) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `static_dispatch`
[INFO] [stderr]    --> src/main.rs:565:1
[INFO] [stderr]     |
[INFO] [stderr] 565 | fn static_dispatch() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_it_dyn`
[INFO] [stderr]    --> src/main.rs:573:1
[INFO] [stderr]     |
[INFO] [stderr] 573 | fn print_it_dyn(z: &Printable) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dynamic_dispatch`
[INFO] [stderr]    --> src/main.rs:576:1
[INFO] [stderr]     |
[INFO] [stderr] 576 | fn dynamic_dispatch() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Circle`
[INFO] [stderr]    --> src/main.rs:585:1
[INFO] [stderr]     |
[INFO] [stderr] 585 | struct Circle {radius: f64}
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Square`
[INFO] [stderr]    --> src/main.rs:586:1
[INFO] [stderr]     |
[INFO] [stderr] 586 | struct Square {side: f64}
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `only_way_is_dyn_dispatch`
[INFO] [stderr]    --> src/main.rs:601:1
[INFO] [stderr]     |
[INFO] [stderr] 601 | fn only_way_is_dyn_dispatch() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person`
[INFO] [stderr]    --> src/main.rs:613:1
[INFO] [stderr]     |
[INFO] [stderr] 613 | struct Person {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Company`
[INFO] [stderr]    --> src/main.rs:616:1
[INFO] [stderr]     |
[INFO] [stderr] 616 | struct Company<'z> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lifetime`
[INFO] [stderr]    --> src/main.rs:620:1
[INFO] [stderr]     |
[INFO] [stderr] 620 | fn lifetime() {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person_rc`
[INFO] [stderr]    --> src/main.rs:627:1
[INFO] [stderr]     |
[INFO] [stderr] 627 | struct Person_rc{
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/main.rs:631:5
[INFO] [stderr]     |
[INFO] [stderr] 631 |     fn new(name: Rc<String>) -> Person_rc {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `greet`
[INFO] [stderr]    --> src/main.rs:634:5
[INFO] [stderr]     |
[INFO] [stderr] 634 |     fn greet(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ref_counter`
[INFO] [stderr]    --> src/main.rs:638:1
[INFO] [stderr]     |
[INFO] [stderr] 638 | fn ref_counter() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person_arc`
[INFO] [stderr]    --> src/main.rs:651:1
[INFO] [stderr]     |
[INFO] [stderr] 651 | struct Person_arc{
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/main.rs:655:5
[INFO] [stderr]     |
[INFO] [stderr] 655 |     fn new(name: Arc<String>) -> Person_arc {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `greet`
[INFO] [stderr]    --> src/main.rs:658:5
[INFO] [stderr]     |
[INFO] [stderr] 658 |     fn greet(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `atomic_ref_counter`
[INFO] [stderr]    --> src/main.rs:664:1
[INFO] [stderr]     |
[INFO] [stderr] 664 | fn atomic_ref_counter() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] warning: struct is never constructed: `Line`
[INFO] [stderr]    --> src/main.rs:126:1
[INFO] [stderr]     |
[INFO] [stderr] 126 | struct Line {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `structures`
[INFO] [stderr]    --> src/main.rs:131:1
[INFO] [stderr]     |
[INFO] [stderr] 131 | fn structures() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Color`
[INFO] [stderr]    --> src/main.rs:138:1
[INFO] [stderr]     |
[INFO] [stderr] 138 | enum Color {
[INFO] [stderr]     | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enums`
[INFO] [stderr]    --> src/main.rs:151:1
[INFO] [stderr]     |
[INFO] [stderr] 151 | fn enums() {
[INFO] [stderr]     | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: union is never used: `IntOrFloat`
[INFO] [stderr]    --> src/main.rs:174:1
[INFO] [stderr]     |
[INFO] [stderr] 174 | union IntOrFloat {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `process_value`
[INFO] [stderr]    --> src/main.rs:179:1
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn process_value(iof: IntOrFloat) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unions`
[INFO] [stderr]    --> src/main.rs:188:1
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn unions() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `options`
[INFO] [stderr]    --> src/main.rs:197:1
[INFO] [stderr]     |
[INFO] [stderr] 197 | fn options() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `arrays`
[INFO] [stderr]    --> src/main.rs:214:1
[INFO] [stderr]     |
[INFO] [stderr] 214 | fn arrays() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vectors`
[INFO] [stderr]    --> src/main.rs:240:1
[INFO] [stderr]     |
[INFO] [stderr] 240 | fn vectors() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `use_slice`
[INFO] [stderr]    --> src/main.rs:269:1
[INFO] [stderr]     |
[INFO] [stderr] 269 | fn use_slice(slice: &mut [i32]) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `slices`
[INFO] [stderr]    --> src/main.rs:274:1
[INFO] [stderr]     |
[INFO] [stderr] 274 | fn slices() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `strings`
[INFO] [stderr]    --> src/main.rs:281:1
[INFO] [stderr]     |
[INFO] [stderr] 281 | fn strings() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_and_product`
[INFO] [stderr]    --> src/main.rs:313:1
[INFO] [stderr]     |
[INFO] [stderr] 313 | fn sum_and_product(x: i32, y: i32) -> (i32, i32) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tuples`
[INFO] [stderr]    --> src/main.rs:317:1
[INFO] [stderr]     |
[INFO] [stderr] 317 | fn tuples() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `how_many`
[INFO] [stderr]    --> src/main.rs:341:1
[INFO] [stderr]     |
[INFO] [stderr] 341 | fn how_many(x: i32) -> &'static str {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pattern_matching`
[INFO] [stderr]    --> src/main.rs:350:1
[INFO] [stderr]     |
[INFO] [stderr] 350 | fn pattern_matching() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point2`
[INFO] [stderr]    --> src/main.rs:363:1
[INFO] [stderr]     |
[INFO] [stderr] 363 | struct Point2<T> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point3`
[INFO] [stderr]    --> src/main.rs:367:1
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] 367 | struct Point3<T, V> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generics`
[INFO] [stderr]    --> src/main.rs:371:1
[INFO] [stderr]     |
[INFO] [stderr] 371 | fn generics() {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_value`
[INFO] [stderr]    --> src/main.rs:379:1
[INFO] [stderr]     |
[INFO] [stderr] 379 | fn print_value(x: i32) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `increase`
[INFO] [stderr]    --> src/main.rs:382:1
[INFO] [stderr]     |
[INFO] [stderr] 382 | fn increase(x: &mut i32) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `product`
[INFO] [stderr]    --> src/main.rs:385:1
[INFO] [stderr]     |
[INFO] [stderr] 385 | fn product(x: i32, y: i32) -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `functions`
[INFO] [stderr]    --> src/main.rs:388:1
[INFO] [stderr]     |
[INFO] [stderr] 388 | fn functions() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point4`
[INFO] [stderr]    --> src/main.rs:401:1
[INFO] [stderr]     |
[INFO] [stderr] 401 | struct Point4 {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Line4`
[INFO] [stderr]    --> src/main.rs:405:1
[INFO] [stderr]     |
[INFO] [stderr] 405 | struct Line4 {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]    --> src/main.rs:410:5
[INFO] [stderr]     |
[INFO] [stderr] 410 |     fn len(&self) -> f64 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `methods`
[INFO] [stderr]    --> src/main.rs:416:1
[INFO] [stderr]     |
[INFO] [stderr] 416 | fn methods() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `closures`
[INFO] [stderr]    --> src/main.rs:423:1
[INFO] [stderr]     |
[INFO] [stderr] 423 | fn closures() {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hof`
[INFO] [stderr]    --> src/main.rs:444:1
[INFO] [stderr]     |
[INFO] [stderr] 444 | fn hof() {
[INFO] [stderr]     | ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `traits`
[INFO] [stderr]    --> src/main.rs:513:1
[INFO] [stderr]     |
[INFO] [stderr] 513 | fn traits() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `overloading`
[INFO] [stderr]    --> src/main.rs:536:1
[INFO] [stderr]     |
[INFO] [stderr] 536 | fn overloading() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_it`
[INFO] [stderr]    --> src/main.rs:561:1
[INFO] [stderr]     |
[INFO] [stderr] 561 | fn print_it<T: Printable>(z: T) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `static_dispatch`
[INFO] [stderr]    --> src/main.rs:565:1
[INFO] [stderr]     |
[INFO] [stderr] 565 | fn static_dispatch() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_it_dyn`
[INFO] [stderr]    --> src/main.rs:573:1
[INFO] [stderr]     |
[INFO] [stderr] 573 | fn print_it_dyn(z: &Printable) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dynamic_dispatch`
[INFO] [stderr]    --> src/main.rs:576:1
[INFO] [stderr]     |
[INFO] [stderr] 576 | fn dynamic_dispatch() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Circle`
[INFO] [stderr]    --> src/main.rs:585:1
[INFO] [stderr]     |
[INFO] [stderr] 585 | struct Circle {radius: f64}
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Square`
[INFO] [stderr]    --> src/main.rs:586:1
[INFO] [stderr]     |
[INFO] [stderr] 586 | struct Square {side: f64}
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `only_way_is_dyn_dispatch`
[INFO] [stderr]    --> src/main.rs:601:1
[INFO] [stderr]     |
[INFO] [stderr] 601 | fn only_way_is_dyn_dispatch() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person`
[INFO] [stderr]    --> src/main.rs:613:1
[INFO] [stderr]     |
[INFO] [stderr] 613 | struct Person {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Company`
[INFO] [stderr]    --> src/main.rs:616:1
[INFO] [stderr]     |
[INFO] [stderr] 616 | struct Company<'z> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `lifetime`
[INFO] [stderr]    --> src/main.rs:620:1
[INFO] [stderr]     |
[INFO] [stderr] 620 | fn lifetime() {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person_rc`
[INFO] [stderr]    --> src/main.rs:627:1
[INFO] [stderr]     |
[INFO] [stderr] 627 | struct Person_rc{
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/main.rs:631:5
[INFO] [stderr]     |
[INFO] [stderr] 631 |     fn new(name: Rc<String>) -> Person_rc {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `greet`
[INFO] [stderr]    --> src/main.rs:634:5
[INFO] [stderr]     |
[INFO] [stderr] 634 |     fn greet(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ref_counter`
[INFO] [stderr]    --> src/main.rs:638:1
[INFO] [stderr]     |
[INFO] [stderr] 638 | fn ref_counter() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person_arc`
[INFO] [stderr]    --> src/main.rs:651:1
[INFO] [stderr]     |
[INFO] [stderr] 651 | struct Person_arc{
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/main.rs:655:5
[INFO] [stderr]     |
[INFO] [stderr] 655 |     fn new(name: Arc<String>) -> Person_arc {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `greet`
[INFO] [stderr]    --> src/main.rs:658:5
[INFO] [stderr]     |
[INFO] [stderr] 658 |     fn greet(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `atomic_ref_counter`
[INFO] [stderr]    --> src/main.rs:664:1
[INFO] [stderr]     |
[INFO] [stderr] 664 | fn atomic_ref_counter() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `RustSample` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_sample`
[INFO] [stderr] 
[INFO] [stderr] warning: crate `RustSample` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_sample`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "f0b476f890650e34a17eae5166c939d46bf5ec423c3a1c3eb91b9d63cc9814ed"`
[INFO] running `"docker" "rm" "-f" "f0b476f890650e34a17eae5166c939d46bf5ec423c3a1c3eb91b9d63cc9814ed"`
[INFO] [stdout] f0b476f890650e34a17eae5166c939d46bf5ec423c3a1c3eb91b9d63cc9814ed