[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-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/luiz-antonio/RustSample"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/luiz-antonio/RustSample'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/luiz-antonio/RustSample" "work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/luiz-antonio/RustSample"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/luiz-antonio/RustSample'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec9ab5c19d79171250106706f28eefc0538793de
[INFO] sha for GitHub repo luiz-antonio/RustSample: ec9ab5c19d79171250106706f28eefc0538793de
[INFO] validating manifest of luiz-antonio/RustSample on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of luiz-antonio/RustSample on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-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-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/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-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/luiz-antonio/RustSample/Cargo.toml
[INFO] crate luiz-antonio/RustSample has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking luiz-antonio/RustSample against master#f66e4697ae286985ddefc53c3a047614568458bb for pr-58592
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58592/worker-7/master#f66e4697ae286985ddefc53c3a047614568458bb:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/luiz-antonio/RustSample:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fd447f62a6f3c1958b8de00a892fb398a92be0b0c6daa46afb430e337edd9947
[INFO] running `"docker" "start" "-a" "fd447f62a6f3c1958b8de00a892fb398a92be0b0c6daa46afb430e337edd9947"`
[INFO] [stderr]     Checking RustSample v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `l`
[INFO] [stderr]    --> src/main.rs:126:9
[INFO] [stderr]     |
[INFO] [stderr] 126 |     let l = Line {
[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:171:9
[INFO] [stderr]     |
[INFO] [stderr] 171 |     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:276:9
[INFO] [stderr]     |
[INFO] [stderr] 276 |     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:301:10
[INFO] [stderr]     |
[INFO] [stderr] 301 |     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:301:13
[INFO] [stderr]     |
[INFO] [stderr] 301 |     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:308:11
[INFO] [stderr]     |
[INFO] [stderr] 308 |     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:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |     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:308:17
[INFO] [stderr]     |
[INFO] [stderr] 308 |     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:308:19
[INFO] [stderr]     |
[INFO] [stderr] 308 |     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:321:9
[INFO] [stderr]     |
[INFO] [stderr] 321 |         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:348:8
[INFO] [stderr]     |
[INFO] [stderr] 348 |    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:349:8
[INFO] [stderr]     |
[INFO] [stderr] 349 |    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:350:8
[INFO] [stderr]     |
[INFO] [stderr] 350 |    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:351:8
[INFO] [stderr]     |
[INFO] [stderr] 351 |    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:353:8
[INFO] [stderr]     |
[INFO] [stderr] 353 |    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:412:9
[INFO] [stderr]     |
[INFO] [stderr] 412 |     let borrow_two = &mut two;
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_borrow_two`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/main.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     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:43:1
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn if_statement() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `while_and_loop`
[INFO] [stderr]   --> src/main.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn while_and_loop() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `for_loop`
[INFO] [stderr]   --> src/main.rs:83:1
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn for_loop() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `match_statement`
[INFO] [stderr]   --> src/main.rs:92:1
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn match_statement() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]    --> src/main.rs:106:1
[INFO] [stderr]     |
[INFO] [stderr] 106 | struct Point {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Line`
[INFO] [stderr]    --> src/main.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | struct Line {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `structures`
[INFO] [stderr]    --> src/main.rs:116:1
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn structures() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Color`
[INFO] [stderr]    --> src/main.rs:132:1
[INFO] [stderr]     |
[INFO] [stderr] 132 | enum Color {
[INFO] [stderr]     | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enums`
[INFO] [stderr]    --> src/main.rs:140:1
[INFO] [stderr]     |
[INFO] [stderr] 140 | fn enums() {
[INFO] [stderr]     | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: union is never used: `IntOrFloat`
[INFO] [stderr]    --> src/main.rs:153:1
[INFO] [stderr]     |
[INFO] [stderr] 153 | union IntOrFloat {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `process_value`
[INFO] [stderr]    --> src/main.rs:158:1
[INFO] [stderr]     |
[INFO] [stderr] 158 | fn process_value(iof: IntOrFloat){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unions`
[INFO] [stderr]    --> src/main.rs:167:1
[INFO] [stderr]     |
[INFO] [stderr] 167 | fn unions() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `options`
[INFO] [stderr]    --> src/main.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | fn options() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `arrays`
[INFO] [stderr]    --> src/main.rs:191:1
[INFO] [stderr]     |
[INFO] [stderr] 191 | fn arrays() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vectors`
[INFO] [stderr]    --> src/main.rs:218:1
[INFO] [stderr]     |
[INFO] [stderr] 218 | fn vectors() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `use_slice`
[INFO] [stderr]    --> src/main.rs:245:1
[INFO] [stderr]     |
[INFO] [stderr] 245 | fn use_slice(slice: &mut[i32]){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `slices`
[INFO] [stderr]    --> src/main.rs:250:1
[INFO] [stderr]     |
[INFO] [stderr] 250 | fn slices() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `strings`
[INFO] [stderr]    --> src/main.rs:257:1
[INFO] [stderr]     |
[INFO] [stderr] 257 | fn strings() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_and_product`
[INFO] [stderr]    --> src/main.rs:289:1
[INFO] [stderr]     |
[INFO] [stderr] 289 | 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:293:1
[INFO] [stderr]     |
[INFO] [stderr] 293 | fn tuples() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `how_many`
[INFO] [stderr]    --> src/main.rs:317:1
[INFO] [stderr]     |
[INFO] [stderr] 317 | 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:326:1
[INFO] [stderr]     |
[INFO] [stderr] 326 | fn pattern_matching() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point2`
[INFO] [stderr]    --> src/main.rs:339:1
[INFO] [stderr]     |
[INFO] [stderr] 339 | struct Point2<T> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point3`
[INFO] [stderr]    --> src/main.rs:343:1
[INFO] [stderr]     |
[INFO] [stderr] 343 | struct Point3<T,V> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generics`
[INFO] [stderr]    --> src/main.rs:347:1
[INFO] [stderr]     |
[INFO] [stderr] 347 | fn generics() {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_value`
[INFO] [stderr]    --> src/main.rs:355:1
[INFO] [stderr]     |
[INFO] [stderr] 355 | fn print_value(x: i32){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `increase`
[INFO] [stderr]    --> src/main.rs:358:1
[INFO] [stderr]     |
[INFO] [stderr] 358 | fn increase(x: &mut i32){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `product`
[INFO] [stderr]    --> src/main.rs:361:1
[INFO] [stderr]     |
[INFO] [stderr] 361 | fn product(x: i32, y: i32) -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `functions`
[INFO] [stderr]    --> src/main.rs:364:1
[INFO] [stderr]     |
[INFO] [stderr] 364 | fn functions() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point4`
[INFO] [stderr]    --> src/main.rs:377:1
[INFO] [stderr]     |
[INFO] [stderr] 377 | struct Point4 {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Line4`
[INFO] [stderr]    --> src/main.rs:381:1
[INFO] [stderr]     |
[INFO] [stderr] 381 | struct Line4 {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]    --> src/main.rs:386:5
[INFO] [stderr]     |
[INFO] [stderr] 386 |     fn len(&self) -> f64 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `methods`
[INFO] [stderr]    --> src/main.rs:392:1
[INFO] [stderr]     |
[INFO] [stderr] 392 | fn methods() {
[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: unused variable: `l`
[INFO] [stderr]    --> src/main.rs:126:9
[INFO] [stderr]     |
[INFO] [stderr] 126 |     let l = Line {
[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:171:9
[INFO] [stderr]     |
[INFO] [stderr] 171 |     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:276:9
[INFO] [stderr]     |
[INFO] [stderr] 276 |     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:301:10
[INFO] [stderr]     |
[INFO] [stderr] 301 |     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:301:13
[INFO] [stderr]     |
[INFO] [stderr] 301 |     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:308:11
[INFO] [stderr]     |
[INFO] [stderr] 308 |     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:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |     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:308:17
[INFO] [stderr]     |
[INFO] [stderr] 308 |     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:308:19
[INFO] [stderr]     |
[INFO] [stderr] 308 |     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:321:9
[INFO] [stderr]     |
[INFO] [stderr] 321 |         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:348:8
[INFO] [stderr]     |
[INFO] [stderr] 348 |    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:349:8
[INFO] [stderr]     |
[INFO] [stderr] 349 |    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:350:8
[INFO] [stderr]     |
[INFO] [stderr] 350 |    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:351:8
[INFO] [stderr]     |
[INFO] [stderr] 351 |    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:353:8
[INFO] [stderr]     |
[INFO] [stderr] 353 |    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:412:9
[INFO] [stderr]     |
[INFO] [stderr] 412 |     let borrow_two = &mut two;
[INFO] [stderr]     |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_borrow_two`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/main.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     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:43:1
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn if_statement() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `while_and_loop`
[INFO] [stderr]   --> src/main.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn while_and_loop() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `for_loop`
[INFO] [stderr]   --> src/main.rs:83:1
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn for_loop() {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `match_statement`
[INFO] [stderr]   --> src/main.rs:92:1
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn match_statement() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]    --> src/main.rs:106:1
[INFO] [stderr]     |
[INFO] [stderr] 106 | struct Point {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Line`
[INFO] [stderr]    --> src/main.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | struct Line {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `structures`
[INFO] [stderr]    --> src/main.rs:116:1
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn structures() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Color`
[INFO] [stderr]    --> src/main.rs:132:1
[INFO] [stderr]     |
[INFO] [stderr] 132 | enum Color {
[INFO] [stderr]     | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enums`
[INFO] [stderr]    --> src/main.rs:140:1
[INFO] [stderr]     |
[INFO] [stderr] 140 | fn enums() {
[INFO] [stderr]     | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: union is never used: `IntOrFloat`
[INFO] [stderr]    --> src/main.rs:153:1
[INFO] [stderr]     |
[INFO] [stderr] 153 | union IntOrFloat {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `process_value`
[INFO] [stderr]    --> src/main.rs:158:1
[INFO] [stderr]     |
[INFO] [stderr] 158 | fn process_value(iof: IntOrFloat){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unions`
[INFO] [stderr]    --> src/main.rs:167:1
[INFO] [stderr]     |
[INFO] [stderr] 167 | fn unions() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `options`
[INFO] [stderr]    --> src/main.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | fn options() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `arrays`
[INFO] [stderr]    --> src/main.rs:191:1
[INFO] [stderr]     |
[INFO] [stderr] 191 | fn arrays() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vectors`
[INFO] [stderr]    --> src/main.rs:218:1
[INFO] [stderr]     |
[INFO] [stderr] 218 | fn vectors() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `use_slice`
[INFO] [stderr]    --> src/main.rs:245:1
[INFO] [stderr]     |
[INFO] [stderr] 245 | fn use_slice(slice: &mut[i32]){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `slices`
[INFO] [stderr]    --> src/main.rs:250:1
[INFO] [stderr]     |
[INFO] [stderr] 250 | fn slices() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `strings`
[INFO] [stderr]    --> src/main.rs:257:1
[INFO] [stderr]     |
[INFO] [stderr] 257 | fn strings() {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_and_product`
[INFO] [stderr]    --> src/main.rs:289:1
[INFO] [stderr]     |
[INFO] [stderr] 289 | 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:293:1
[INFO] [stderr]     |
[INFO] [stderr] 293 | fn tuples() {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `how_many`
[INFO] [stderr]    --> src/main.rs:317:1
[INFO] [stderr]     |
[INFO] [stderr] 317 | 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:326:1
[INFO] [stderr]     |
[INFO] [stderr] 326 | fn pattern_matching() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point2`
[INFO] [stderr]    --> src/main.rs:339:1
[INFO] [stderr]     |
[INFO] [stderr] 339 | struct Point2<T> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point3`
[INFO] [stderr]    --> src/main.rs:343:1
[INFO] [stderr]     |
[INFO] [stderr] 343 | struct Point3<T,V> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generics`
[INFO] [stderr]    --> src/main.rs:347:1
[INFO] [stderr]     |
[INFO] [stderr] 347 | fn generics() {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_value`
[INFO] [stderr]    --> src/main.rs:355:1
[INFO] [stderr]     |
[INFO] [stderr] 355 | fn print_value(x: i32){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `increase`
[INFO] [stderr]    --> src/main.rs:358:1
[INFO] [stderr]     |
[INFO] [stderr] 358 | fn increase(x: &mut i32){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `product`
[INFO] [stderr]    --> src/main.rs:361:1
[INFO] [stderr]     |
[INFO] [stderr] 361 | fn product(x: i32, y: i32) -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `functions`
[INFO] [stderr]    --> src/main.rs:364:1
[INFO] [stderr]     |
[INFO] [stderr] 364 | fn functions() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point4`
[INFO] [stderr]    --> src/main.rs:377:1
[INFO] [stderr]     |
[INFO] [stderr] 377 | struct Point4 {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Line4`
[INFO] [stderr]    --> src/main.rs:381:1
[INFO] [stderr]     |
[INFO] [stderr] 381 | struct Line4 {
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]    --> src/main.rs:386:5
[INFO] [stderr]     |
[INFO] [stderr] 386 |     fn len(&self) -> f64 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `methods`
[INFO] [stderr]    --> src/main.rs:392:1
[INFO] [stderr]     |
[INFO] [stderr] 392 | fn methods() {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "fd447f62a6f3c1958b8de00a892fb398a92be0b0c6daa46afb430e337edd9947"`
[INFO] running `"docker" "rm" "-f" "fd447f62a6f3c1958b8de00a892fb398a92be0b0c6daa46afb430e337edd9947"`
[INFO] [stdout] fd447f62a6f3c1958b8de00a892fb398a92be0b0c6daa46afb430e337edd9947