[INFO] cloning repository https://github.com/luiz-antonio/RustSample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luiz-antonio/RustSample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluiz-antonio%2FRustSample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluiz-antonio%2FRustSample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fa2106873d82c9816a47a9b7bea74bbc98637d1
[INFO] checking luiz-antonio/RustSample against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluiz-antonio%2FRustSample" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luiz-antonio/RustSample 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/luiz-antonio/RustSample
[INFO] finished tweaking git repo https://github.com/luiz-antonio/RustSample
[INFO] tweaked toml for git repo https://github.com/luiz-antonio/RustSample written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/luiz-antonio/RustSample 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 }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 91250868828c50ba644f692bbb4ce7de53dde0a335fc2b3aecf6a17579de025a
[INFO] running `Command { std: "docker" "start" "-a" "91250868828c50ba644f692bbb4ce7de53dde0a335fc2b3aecf6a17579de025a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91250868828c50ba644f692bbb4ce7de53dde0a335fc2b3aecf6a17579de025a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91250868828c50ba644f692bbb4ce7de53dde0a335fc2b3aecf6a17579de025a", kill_on_drop: false }`
[INFO] [stdout] 91250868828c50ba644f692bbb4ce7de53dde0a335fc2b3aecf6a17579de025a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d0ff5a34433afca4e84f5701724a58fd390f771614369ed08c411f8ada7fc1f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7d0ff5a34433afca4e84f5701724a58fd390f771614369ed08c411f8ada7fc1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking RustSample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:114:10
[INFO] [stdout]     |
[INFO] [stdout] 114 |         1...999 => "unknown",
[INFO] [stdout]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:345:14
[INFO] [stdout]     |
[INFO] [stdout] 345 |         z @ 9...11 => "lots of",
[INFO] [stdout]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:573:21
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn print_it_dyn(z: &Printable) {
[INFO] [stdout]     |                     ^^^^^^^^^ help: use `dyn`: `dyn Printable`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:602:18
[INFO] [stdout]     |
[INFO] [stdout] 602 |     let shapes:[&Shape; 4] = [
[INFO] [stdout]     |                  ^^^^^ help: use `dyn`: `dyn Shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Person_rc` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:627:8
[INFO] [stdout]     |
[INFO] [stdout] 627 | struct Person_rc{
[INFO] [stdout]     |        ^^^^^^^^^ help: convert the identifier to upper camel case: `PersonRc`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Person_arc` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:651:8
[INFO] [stdout]     |
[INFO] [stdout] 651 | struct Person_arc{
[INFO] [stdout]     |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `PersonArc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Person_mut` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:675:8
[INFO] [stdout]     |
[INFO] [stdout] 675 | struct Person_mut {
[INFO] [stdout]     |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `PersonMut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:114:10
[INFO] [stdout]     |
[INFO] [stdout] 114 |         1...999 => "unknown",
[INFO] [stdout]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:345:14
[INFO] [stdout]     |
[INFO] [stdout] 345 |         z @ 9...11 => "lots of",
[INFO] [stdout]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:573:21
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn print_it_dyn(z: &Printable) {
[INFO] [stdout]     |                     ^^^^^^^^^ help: use `dyn`: `dyn Printable`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:602:18
[INFO] [stdout]     |
[INFO] [stdout] 602 |     let shapes:[&Shape; 4] = [
[INFO] [stdout]     |                  ^^^^^ help: use `dyn`: `dyn Shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Person_rc` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:627:8
[INFO] [stdout]     |
[INFO] [stdout] 627 | struct Person_rc{
[INFO] [stdout]     |        ^^^^^^^^^ help: convert the identifier to upper camel case: `PersonRc`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Person_arc` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:651:8
[INFO] [stdout]     |
[INFO] [stdout] 651 | struct Person_arc{
[INFO] [stdout]     |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `PersonArc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Person_mut` should have an upper camel case name
[INFO] [stdout]    --> src/main.rs:675:8
[INFO] [stdout]     |
[INFO] [stdout] 675 | struct Person_mut {
[INFO] [stdout]     |        ^^^^^^^^^^ help: convert the identifier to upper camel case: `PersonMut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/main.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |     let l = Line { start: p, end: p2 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:192:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |     let value = unsafe { iof.i };
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/main.rs:300:9
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let u: &str = &letters;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/main.rs:325:10
[INFO] [stdout]     |
[INFO] [stdout] 325 |     let (a, b) = sp;
[INFO] [stdout]     |          ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/main.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 325 |     let (a, b) = sp;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/main.rs:332:11
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stdout]     |           ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/main.rs:332:14
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/main.rs:332:19
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]    --> src/main.rs:332:22
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:345:9
[INFO] [stdout]     |
[INFO] [stdout] 345 |         z @ 9...11 => "lots of",
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/main.rs:372:9
[INFO] [stdout]     |
[INFO] [stdout] 372 |     let a = Point2 { x: 0, y: 0 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/main.rs:373:9
[INFO] [stdout]     |
[INFO] [stdout] 373 |     let b = Point2 { x: 1.2, y: 3.4 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/main.rs:374:9
[INFO] [stdout]     |
[INFO] [stdout] 374 |     let c: Point2<u16> = Point2 { x: 0, y: 4 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]    --> src/main.rs:375:9
[INFO] [stdout]     |
[INFO] [stdout] 375 |     let d: Point2<f64> = Point2 { x: 1.2, y: 3.4 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:377:9
[INFO] [stdout]     |
[INFO] [stdout] 377 |     let e: Point3<u16, i32> = Point3 { x: 0, y: 4 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `borrow_two`
[INFO] [stdout]    --> src/main.rs:436:9
[INFO] [stdout]     |
[INFO] [stdout] 436 |     let borrow_two = &mut two;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_borrow_two`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tesla`
[INFO] [stdout]    --> src/main.rs:622:9
[INFO] [stdout]     |
[INFO] [stdout] 622 |     let tesla = Company {name: String::from("Tesla"), ceo: &boss};
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_tesla`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/main.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |     let l = Line { start: p, end: p2 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/main.rs:192:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |     let value = unsafe { iof.i };
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/main.rs:300:9
[INFO] [stdout]     |
[INFO] [stdout] 300 |     let u: &str = &letters;
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/main.rs:325:10
[INFO] [stdout]     |
[INFO] [stdout] 325 |     let (a, b) = sp;
[INFO] [stdout]     |          ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/main.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 325 |     let (a, b) = sp;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/main.rs:332:11
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stdout]     |           ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/main.rs:332:14
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/main.rs:332:19
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stdout]     |                   ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]    --> src/main.rs:332:22
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let ((a, b), (c, d)) = combined;
[INFO] [stdout]     |                      ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> src/main.rs:345:9
[INFO] [stdout]     |
[INFO] [stdout] 345 |         z @ 9...11 => "lots of",
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/main.rs:372:9
[INFO] [stdout]     |
[INFO] [stdout] 372 |     let a = Point2 { x: 0, y: 0 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/main.rs:373:9
[INFO] [stdout]     |
[INFO] [stdout] 373 |     let b = Point2 { x: 1.2, y: 3.4 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/main.rs:374:9
[INFO] [stdout]     |
[INFO] [stdout] 374 |     let c: Point2<u16> = Point2 { x: 0, y: 4 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]    --> src/main.rs:375:9
[INFO] [stdout]     |
[INFO] [stdout] 375 |     let d: Point2<f64> = Point2 { x: 1.2, y: 3.4 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:377:9
[INFO] [stdout]     |
[INFO] [stdout] 377 |     let e: Point3<u16, i32> = Point3 { x: 0, y: 4 };
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `borrow_two`
[INFO] [stdout]    --> src/main.rs:436:9
[INFO] [stdout]     |
[INFO] [stdout] 436 |     let borrow_two = &mut two;
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_borrow_two`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tesla`
[INFO] [stdout]    --> src/main.rs:622:9
[INFO] [stdout]     |
[INFO] [stdout] 622 |     let tesla = Company {name: String::from("Tesla"), ceo: &boss};
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_tesla`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/main.rs:190:5
[INFO] [stdout]     |
[INFO] [stdout] 190 |     unsafe { iof.i = 42 };
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MEANING_OF_LIFE`
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | const MEANING_OF_LIFE: u8 = 42; // substitui todos os MEANING_OF_LIFE do codigo por 42
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `MYSTATIC`
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | static MYSTATIC: u8 = 123; // tem endereço de
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `typefun`
[INFO] [stdout]  --> src/main.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn typefun() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `if_statement`
[INFO] [stdout]   --> src/main.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn if_statement() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_and_loop`
[INFO] [stdout]   --> src/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn while_and_loop() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_loop`
[INFO] [stdout]   --> src/main.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn for_loop() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_statement`
[INFO] [stdout]    --> src/main.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn match_statement() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Line`
[INFO] [stdout]    --> src/main.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | struct Line {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `structures`
[INFO] [stdout]    --> src/main.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn structures() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Color`
[INFO] [stdout]    --> src/main.rs:138:6
[INFO] [stdout]     |
[INFO] [stdout] 138 | enum Color {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enums`
[INFO] [stdout]    --> src/main.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn enums() {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: union is never used: `IntOrFloat`
[INFO] [stdout]    --> src/main.rs:174:7
[INFO] [stdout]     |
[INFO] [stdout] 174 | union IntOrFloat {
[INFO] [stdout]     |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `process_value`
[INFO] [stdout]    --> src/main.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn process_value(iof: IntOrFloat) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unions`
[INFO] [stdout]    --> src/main.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn unions() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `options`
[INFO] [stdout]    --> src/main.rs:197:4
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn options() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `arrays`
[INFO] [stdout]    --> src/main.rs:214:4
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn arrays() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vectors`
[INFO] [stdout]    --> src/main.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn vectors() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `use_slice`
[INFO] [stdout]    --> src/main.rs:269:4
[INFO] [stdout]     |
[INFO] [stdout] 269 | fn use_slice(slice: &mut [i32]) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `slices`
[INFO] [stdout]    --> src/main.rs:274:4
[INFO] [stdout]     |
[INFO] [stdout] 274 | fn slices() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `strings`
[INFO] [stdout]    --> src/main.rs:281:4
[INFO] [stdout]     |
[INFO] [stdout] 281 | fn strings() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_and_product`
[INFO] [stdout]    --> src/main.rs:313:4
[INFO] [stdout]     |
[INFO] [stdout] 313 | fn sum_and_product(x: i32, y: i32) -> (i32, i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuples`
[INFO] [stdout]    --> src/main.rs:317:4
[INFO] [stdout]     |
[INFO] [stdout] 317 | fn tuples() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `how_many`
[INFO] [stdout]    --> src/main.rs:341:4
[INFO] [stdout]     |
[INFO] [stdout] 341 | fn how_many(x: i32) -> &'static str {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_matching`
[INFO] [stdout]    --> src/main.rs:350:4
[INFO] [stdout]     |
[INFO] [stdout] 350 | fn pattern_matching() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point2`
[INFO] [stdout]    --> src/main.rs:363:8
[INFO] [stdout]     |
[INFO] [stdout] 363 | struct Point2<T> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point3`
[INFO] [stdout]    --> src/main.rs:367:8
[INFO] [stdout]     |
[INFO] [stdout] 367 | struct Point3<T, V> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generics`
[INFO] [stdout]    --> src/main.rs:371:4
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn generics() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_value`
[INFO] [stdout]    --> src/main.rs:379:4
[INFO] [stdout]     |
[INFO] [stdout] 379 | fn print_value(x: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `increase`
[INFO] [stdout]    --> src/main.rs:382:4
[INFO] [stdout]     |
[INFO] [stdout] 382 | fn increase(x: &mut i32) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `product`
[INFO] [stdout]    --> src/main.rs:385:4
[INFO] [stdout]     |
[INFO] [stdout] 385 | fn product(x: i32, y: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `functions`
[INFO] [stdout]    --> src/main.rs:388:4
[INFO] [stdout]     |
[INFO] [stdout] 388 | fn functions() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point4`
[INFO] [stdout]    --> src/main.rs:401:8
[INFO] [stdout]     |
[INFO] [stdout] 401 | struct Point4 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Line4`
[INFO] [stdout]    --> src/main.rs:405:8
[INFO] [stdout]     |
[INFO] [stdout] 405 | struct Line4 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]    --> src/main.rs:410:8
[INFO] [stdout]     |
[INFO] [stdout] 410 |     fn len(&self) -> f64 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `methods`
[INFO] [stdout]    --> src/main.rs:416:4
[INFO] [stdout]     |
[INFO] [stdout] 416 | fn methods() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `closures`
[INFO] [stdout]    --> src/main.rs:423:4
[INFO] [stdout]     |
[INFO] [stdout] 423 | fn closures() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hof`
[INFO] [stdout]    --> src/main.rs:444:4
[INFO] [stdout]     |
[INFO] [stdout] 444 | fn hof() {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `traits`
[INFO] [stdout]    --> src/main.rs:513:4
[INFO] [stdout]     |
[INFO] [stdout] 513 | fn traits() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `overloading`
[INFO] [stdout]    --> src/main.rs:536:4
[INFO] [stdout]     |
[INFO] [stdout] 536 | fn overloading() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_it`
[INFO] [stdout]    --> src/main.rs:561:4
[INFO] [stdout]     |
[INFO] [stdout] 561 | fn print_it<T: Printable>(z: T) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `static_dispatch`
[INFO] [stdout]    --> src/main.rs:565:4
[INFO] [stdout]     |
[INFO] [stdout] 565 | fn static_dispatch() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_it_dyn`
[INFO] [stdout]    --> src/main.rs:573:4
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn print_it_dyn(z: &Printable) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dynamic_dispatch`
[INFO] [stdout]    --> src/main.rs:576:4
[INFO] [stdout]     |
[INFO] [stdout] 576 | fn dynamic_dispatch() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `only_way_is_dyn_dispatch`
[INFO] [stdout]    --> src/main.rs:601:4
[INFO] [stdout]     |
[INFO] [stdout] 601 | fn only_way_is_dyn_dispatch() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person`
[INFO] [stdout]    --> src/main.rs:613:8
[INFO] [stdout]     |
[INFO] [stdout] 613 | struct Person {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Company`
[INFO] [stdout]    --> src/main.rs:616:8
[INFO] [stdout]     |
[INFO] [stdout] 616 | struct Company<'z> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lifetime`
[INFO] [stdout]    --> src/main.rs:620:4
[INFO] [stdout]     |
[INFO] [stdout] 620 | fn lifetime() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person_rc`
[INFO] [stdout]    --> src/main.rs:627:8
[INFO] [stdout]     |
[INFO] [stdout] 627 | struct Person_rc{
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:631:8
[INFO] [stdout]     |
[INFO] [stdout] 631 |     fn new(name: Rc<String>) -> Person_rc {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `greet`
[INFO] [stdout]    --> src/main.rs:634:8
[INFO] [stdout]     |
[INFO] [stdout] 634 |     fn greet(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ref_counter`
[INFO] [stdout]    --> src/main.rs:638:4
[INFO] [stdout]     |
[INFO] [stdout] 638 | fn ref_counter() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person_arc`
[INFO] [stdout]    --> src/main.rs:651:8
[INFO] [stdout]     |
[INFO] [stdout] 651 | struct Person_arc{
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:655:8
[INFO] [stdout]     |
[INFO] [stdout] 655 |     fn new(name: Arc<String>) -> Person_arc {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `greet`
[INFO] [stdout]    --> src/main.rs:658:8
[INFO] [stdout]     |
[INFO] [stdout] 658 |     fn greet(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `atomic_ref_counter`
[INFO] [stdout]    --> src/main.rs:664:4
[INFO] [stdout]     |
[INFO] [stdout] 664 | fn atomic_ref_counter() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustSample` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_sample`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 81 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/main.rs:190:5
[INFO] [stdout]     |
[INFO] [stdout] 190 |     unsafe { iof.i = 42 };
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MEANING_OF_LIFE`
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | const MEANING_OF_LIFE: u8 = 42; // substitui todos os MEANING_OF_LIFE do codigo por 42
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `MYSTATIC`
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | static MYSTATIC: u8 = 123; // tem endereço de
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `typefun`
[INFO] [stdout]  --> src/main.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn typefun() {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `if_statement`
[INFO] [stdout]   --> src/main.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn if_statement() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_and_loop`
[INFO] [stdout]   --> src/main.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn while_and_loop() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_loop`
[INFO] [stdout]   --> src/main.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn for_loop() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `match_statement`
[INFO] [stdout]    --> src/main.rs:107:4
[INFO] [stdout]     |
[INFO] [stdout] 107 | fn match_statement() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Line`
[INFO] [stdout]    --> src/main.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | struct Line {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `structures`
[INFO] [stdout]    --> src/main.rs:131:4
[INFO] [stdout]     |
[INFO] [stdout] 131 | fn structures() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Color`
[INFO] [stdout]    --> src/main.rs:138:6
[INFO] [stdout]     |
[INFO] [stdout] 138 | enum Color {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enums`
[INFO] [stdout]    --> src/main.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn enums() {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: union is never used: `IntOrFloat`
[INFO] [stdout]    --> src/main.rs:174:7
[INFO] [stdout]     |
[INFO] [stdout] 174 | union IntOrFloat {
[INFO] [stdout]     |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `process_value`
[INFO] [stdout]    --> src/main.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn process_value(iof: IntOrFloat) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `unions`
[INFO] [stdout]    --> src/main.rs:188:4
[INFO] [stdout]     |
[INFO] [stdout] 188 | fn unions() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `options`
[INFO] [stdout]    --> src/main.rs:197:4
[INFO] [stdout]     |
[INFO] [stdout] 197 | fn options() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `arrays`
[INFO] [stdout]    --> src/main.rs:214:4
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn arrays() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `vectors`
[INFO] [stdout]    --> src/main.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn vectors() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `use_slice`
[INFO] [stdout]    --> src/main.rs:269:4
[INFO] [stdout]     |
[INFO] [stdout] 269 | fn use_slice(slice: &mut [i32]) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `slices`
[INFO] [stdout]    --> src/main.rs:274:4
[INFO] [stdout]     |
[INFO] [stdout] 274 | fn slices() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `strings`
[INFO] [stdout]    --> src/main.rs:281:4
[INFO] [stdout]     |
[INFO] [stdout] 281 | fn strings() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sum_and_product`
[INFO] [stdout]    --> src/main.rs:313:4
[INFO] [stdout]     |
[INFO] [stdout] 313 | fn sum_and_product(x: i32, y: i32) -> (i32, i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuples`
[INFO] [stdout]    --> src/main.rs:317:4
[INFO] [stdout]     |
[INFO] [stdout] 317 | fn tuples() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `how_many`
[INFO] [stdout]    --> src/main.rs:341:4
[INFO] [stdout]     |
[INFO] [stdout] 341 | fn how_many(x: i32) -> &'static str {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pattern_matching`
[INFO] [stdout]    --> src/main.rs:350:4
[INFO] [stdout]     |
[INFO] [stdout] 350 | fn pattern_matching() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point2`
[INFO] [stdout]    --> src/main.rs:363:8
[INFO] [stdout]     |
[INFO] [stdout] 363 | struct Point2<T> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point3`
[INFO] [stdout]    --> src/main.rs:367:8
[INFO] [stdout]     |
[INFO] [stdout] 367 | struct Point3<T, V> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `generics`
[INFO] [stdout]    --> src/main.rs:371:4
[INFO] [stdout]     |
[INFO] [stdout] 371 | fn generics() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_value`
[INFO] [stdout]    --> src/main.rs:379:4
[INFO] [stdout]     |
[INFO] [stdout] 379 | fn print_value(x: i32) {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `increase`
[INFO] [stdout]    --> src/main.rs:382:4
[INFO] [stdout]     |
[INFO] [stdout] 382 | fn increase(x: &mut i32) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `product`
[INFO] [stdout]    --> src/main.rs:385:4
[INFO] [stdout]     |
[INFO] [stdout] 385 | fn product(x: i32, y: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `functions`
[INFO] [stdout]    --> src/main.rs:388:4
[INFO] [stdout]     |
[INFO] [stdout] 388 | fn functions() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Point4`
[INFO] [stdout]    --> src/main.rs:401:8
[INFO] [stdout]     |
[INFO] [stdout] 401 | struct Point4 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Line4`
[INFO] [stdout]    --> src/main.rs:405:8
[INFO] [stdout]     |
[INFO] [stdout] 405 | struct Line4 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]    --> src/main.rs:410:8
[INFO] [stdout]     |
[INFO] [stdout] 410 |     fn len(&self) -> f64 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `methods`
[INFO] [stdout]    --> src/main.rs:416:4
[INFO] [stdout]     |
[INFO] [stdout] 416 | fn methods() {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `closures`
[INFO] [stdout]    --> src/main.rs:423:4
[INFO] [stdout]     |
[INFO] [stdout] 423 | fn closures() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hof`
[INFO] [stdout]    --> src/main.rs:444:4
[INFO] [stdout]     |
[INFO] [stdout] 444 | fn hof() {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `traits`
[INFO] [stdout]    --> src/main.rs:513:4
[INFO] [stdout]     |
[INFO] [stdout] 513 | fn traits() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `overloading`
[INFO] [stdout]    --> src/main.rs:536:4
[INFO] [stdout]     |
[INFO] [stdout] 536 | fn overloading() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_it`
[INFO] [stdout]    --> src/main.rs:561:4
[INFO] [stdout]     |
[INFO] [stdout] 561 | fn print_it<T: Printable>(z: T) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `static_dispatch`
[INFO] [stdout]    --> src/main.rs:565:4
[INFO] [stdout]     |
[INFO] [stdout] 565 | fn static_dispatch() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_it_dyn`
[INFO] [stdout]    --> src/main.rs:573:4
[INFO] [stdout]     |
[INFO] [stdout] 573 | fn print_it_dyn(z: &Printable) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dynamic_dispatch`
[INFO] [stdout]    --> src/main.rs:576:4
[INFO] [stdout]     |
[INFO] [stdout] 576 | fn dynamic_dispatch() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `only_way_is_dyn_dispatch`
[INFO] [stdout]    --> src/main.rs:601:4
[INFO] [stdout]     |
[INFO] [stdout] 601 | fn only_way_is_dyn_dispatch() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person`
[INFO] [stdout]    --> src/main.rs:613:8
[INFO] [stdout]     |
[INFO] [stdout] 613 | struct Person {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Company`
[INFO] [stdout]    --> src/main.rs:616:8
[INFO] [stdout]     |
[INFO] [stdout] 616 | struct Company<'z> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lifetime`
[INFO] [stdout]    --> src/main.rs:620:4
[INFO] [stdout]     |
[INFO] [stdout] 620 | fn lifetime() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person_rc`
[INFO] [stdout]    --> src/main.rs:627:8
[INFO] [stdout]     |
[INFO] [stdout] 627 | struct Person_rc{
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:631:8
[INFO] [stdout]     |
[INFO] [stdout] 631 |     fn new(name: Rc<String>) -> Person_rc {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `greet`
[INFO] [stdout]    --> src/main.rs:634:8
[INFO] [stdout]     |
[INFO] [stdout] 634 |     fn greet(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ref_counter`
[INFO] [stdout]    --> src/main.rs:638:4
[INFO] [stdout]     |
[INFO] [stdout] 638 | fn ref_counter() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person_arc`
[INFO] [stdout]    --> src/main.rs:651:8
[INFO] [stdout]     |
[INFO] [stdout] 651 | struct Person_arc{
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:655:8
[INFO] [stdout]     |
[INFO] [stdout] 655 |     fn new(name: Arc<String>) -> Person_arc {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `greet`
[INFO] [stdout]    --> src/main.rs:658:8
[INFO] [stdout]     |
[INFO] [stdout] 658 |     fn greet(&self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `atomic_ref_counter`
[INFO] [stdout]    --> src/main.rs:664:4
[INFO] [stdout]     |
[INFO] [stdout] 664 | fn atomic_ref_counter() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustSample` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `rust_sample`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 81 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.85s
[INFO] running `Command { std: "docker" "inspect" "7d0ff5a34433afca4e84f5701724a58fd390f771614369ed08c411f8ada7fc1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d0ff5a34433afca4e84f5701724a58fd390f771614369ed08c411f8ada7fc1f", kill_on_drop: false }`
[INFO] [stdout] 7d0ff5a34433afca4e84f5701724a58fd390f771614369ed08c411f8ada7fc1f