Dec 18 14:32:13.348 INFO checking learnrust-0.1.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 14:32:13.349 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/learnrust/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 14:32:13.856 INFO [stdout] 8b701771cd6fe598fa46685355914831b107e7ea453fd924929ba7002cf26a89
Dec 18 14:32:13.856 INFO running `"docker" "start" "-a" "8b701771cd6fe598fa46685355914831b107e7ea453fd924929ba7002cf26a89"`
Dec 18 14:32:15.164 INFO [stderr]     Checking learnrust v0.1.0 (/opt/crater/workdir)
Dec 18 14:32:15.580 INFO [stderr] warning: unused import: `::lessons::Rectangle::Rectangle`
Dec 18 14:32:15.580 INFO [stderr]  --> src/adder/mod.rs:1:5
Dec 18 14:32:15.580 INFO [stderr]   |
Dec 18 14:32:15.580 INFO [stderr] 1 | use ::lessons::Rectangle::Rectangle;
Dec 18 14:32:15.580 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.580 INFO [stderr]   |
Dec 18 14:32:15.580 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 14:32:15.580 INFO [stderr] 
Dec 18 14:32:15.580 INFO [stderr] warning: unused import: `::lessons::Guess::Guess`
Dec 18 14:32:15.580 INFO [stderr]  --> src/adder/mod.rs:2:5
Dec 18 14:32:15.580 INFO [stderr]   |
Dec 18 14:32:15.580 INFO [stderr] 2 | use ::lessons::Guess::Guess;
Dec 18 14:32:15.580 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.580 INFO [stderr] 
Dec 18 14:32:15.580 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 18 14:32:15.580 INFO [stderr]   --> src/closures/learnIterator.rs:30:7
Dec 18 14:32:15.580 INFO [stderr]    |
Dec 18 14:32:15.580 INFO [stderr] 30 |     if(self.count < 6){
Dec 18 14:32:15.580 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:32:15.580 INFO [stderr]    |
Dec 18 14:32:15.580 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 14:32:15.580 INFO [stderr] 
Dec 18 14:32:15.626 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 18 14:32:15.626 INFO [stderr]   --> src/closures/learnIterator.rs:30:7
Dec 18 14:32:15.626 INFO [stderr]    |
Dec 18 14:32:15.626 INFO [stderr] 30 |     if(self.count < 6){
Dec 18 14:32:15.626 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 14:32:15.626 INFO [stderr]    |
Dec 18 14:32:15.626 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 14:32:15.626 INFO [stderr] 
Dec 18 14:32:15.832 INFO [stderr] warning: unused variable: `v_reference`
Dec 18 14:32:15.832 INFO [stderr]   --> src/lessons/commonCollection.rs:25:9
Dec 18 14:32:15.832 INFO [stderr]    |
Dec 18 14:32:15.832 INFO [stderr] 25 |     let v_reference = &v[v_index];
Dec 18 14:32:15.832 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_v_reference` instead
Dec 18 14:32:15.832 INFO [stderr]    |
Dec 18 14:32:15.832 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 14:32:15.832 INFO [stderr] 
Dec 18 14:32:15.832 INFO [stderr] warning: unused variable: `s2`
Dec 18 14:32:15.832 INFO [stderr]   --> src/lessons/tryStringCollection.rs:24:7
Dec 18 14:32:15.832 INFO [stderr]    |
Dec 18 14:32:15.833 INFO [stderr] 24 |   let s2 = String::from("tac");
Dec 18 14:32:15.833 INFO [stderr]    |       ^^ help: consider using `_s2` instead
Dec 18 14:32:15.833 INFO [stderr] 
Dec 18 14:32:15.833 INFO [stderr] warning: unused variable: `point2`
Dec 18 14:32:15.833 INFO [stderr]   --> src/lessons/tryGenericTypes.rs:48:7
Dec 18 14:32:15.833 INFO [stderr]    |
Dec 18 14:32:15.833 INFO [stderr] 48 |   let point2 = Point{x : 10.1, y: 20.2};
Dec 18 14:32:15.833 INFO [stderr]    |       ^^^^^^ help: consider using `_point2` instead
Dec 18 14:32:15.833 INFO [stderr] 
Dec 18 14:32:15.833 INFO [stderr] warning: unused variable: `point2_2`
Dec 18 14:32:15.833 INFO [stderr]   --> src/lessons/tryGenericTypes.rs:53:7
Dec 18 14:32:15.833 INFO [stderr]    |
Dec 18 14:32:15.833 INFO [stderr] 53 |   let point2_2 = Point2{x : 20, y : 20.1};
Dec 18 14:32:15.833 INFO [stderr]    |       ^^^^^^^^ help: consider using `_point2_2` instead
Dec 18 14:32:15.833 INFO [stderr] 
Dec 18 14:32:15.833 INFO [stderr] warning: unused variable: `intensity`
Dec 18 14:32:15.833 INFO [stderr]   --> src/closures/learnClosure.rs:41:40
Dec 18 14:32:15.833 INFO [stderr]    |
Dec 18 14:32:15.833 INFO [stderr] 41 | pub fn simulated_expensive_calculation(intensity: u32){
Dec 18 14:32:15.833 INFO [stderr]    |                                        ^^^^^^^^^ help: consider using `_intensity` instead
Dec 18 14:32:15.833 INFO [stderr] 
Dec 18 14:32:15.833 INFO [stderr] warning: unused variable: `expensive_result2`
Dec 18 14:32:15.833 INFO [stderr]   --> src/closures/learnClosure.rs:62:7
Dec 18 14:32:15.833 INFO [stderr]    |
Dec 18 14:32:15.833 INFO [stderr] 62 |   let expensive_result2 = expensive_calculation(intensity);
Dec 18 14:32:15.833 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^ help: consider using `_expensive_result2` instead
Dec 18 14:32:15.833 INFO [stderr] 
Dec 18 14:32:15.833 INFO [stderr] warning: unused variable: `expensive_result3`
Dec 18 14:32:15.833 INFO [stderr]   --> src/closures/learnClosure.rs:63:7
Dec 18 14:32:15.833 INFO [stderr]    |
Dec 18 14:32:15.833 INFO [stderr] 63 |   let expensive_result3 = |num: u32| -> u32{
Dec 18 14:32:15.833 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^ help: consider using `_expensive_result3` instead
Dec 18 14:32:15.833 INFO [stderr] 
Dec 18 14:32:15.848 INFO [stderr] warning: unused variable: `v_reference`
Dec 18 14:32:15.848 INFO [stderr]   --> src/lessons/commonCollection.rs:25:9
Dec 18 14:32:15.848 INFO [stderr]    |
Dec 18 14:32:15.848 INFO [stderr] 25 |     let v_reference = &v[v_index];
Dec 18 14:32:15.848 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_v_reference` instead
Dec 18 14:32:15.848 INFO [stderr]    |
Dec 18 14:32:15.848 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 14:32:15.849 INFO [stderr] 
Dec 18 14:32:15.849 INFO [stderr] warning: unused variable: `s2`
Dec 18 14:32:15.849 INFO [stderr]   --> src/lessons/tryStringCollection.rs:24:7
Dec 18 14:32:15.849 INFO [stderr]    |
Dec 18 14:32:15.849 INFO [stderr] 24 |   let s2 = String::from("tac");
Dec 18 14:32:15.849 INFO [stderr]    |       ^^ help: consider using `_s2` instead
Dec 18 14:32:15.849 INFO [stderr] 
Dec 18 14:32:15.849 INFO [stderr] warning: unused variable: `point2`
Dec 18 14:32:15.849 INFO [stderr]   --> src/lessons/tryGenericTypes.rs:48:7
Dec 18 14:32:15.849 INFO [stderr]    |
Dec 18 14:32:15.849 INFO [stderr] 48 |   let point2 = Point{x : 10.1, y: 20.2};
Dec 18 14:32:15.849 INFO [stderr]    |       ^^^^^^ help: consider using `_point2` instead
Dec 18 14:32:15.849 INFO [stderr] 
Dec 18 14:32:15.849 INFO [stderr] warning: unused variable: `point2_2`
Dec 18 14:32:15.849 INFO [stderr]   --> src/lessons/tryGenericTypes.rs:53:7
Dec 18 14:32:15.849 INFO [stderr]    |
Dec 18 14:32:15.849 INFO [stderr] 53 |   let point2_2 = Point2{x : 20, y : 20.1};
Dec 18 14:32:15.849 INFO [stderr]    |       ^^^^^^^^ help: consider using `_point2_2` instead
Dec 18 14:32:15.849 INFO [stderr] 
Dec 18 14:32:15.849 INFO [stderr] warning: unused variable: `intensity`
Dec 18 14:32:15.849 INFO [stderr]   --> src/closures/learnClosure.rs:41:40
Dec 18 14:32:15.849 INFO [stderr]    |
Dec 18 14:32:15.849 INFO [stderr] 41 | pub fn simulated_expensive_calculation(intensity: u32){
Dec 18 14:32:15.849 INFO [stderr]    |                                        ^^^^^^^^^ help: consider using `_intensity` instead
Dec 18 14:32:15.849 INFO [stderr] 
Dec 18 14:32:15.849 INFO [stderr] warning: unused variable: `expensive_result2`
Dec 18 14:32:15.849 INFO [stderr]   --> src/closures/learnClosure.rs:62:7
Dec 18 14:32:15.849 INFO [stderr]    |
Dec 18 14:32:15.849 INFO [stderr] 62 |   let expensive_result2 = expensive_calculation(intensity);
Dec 18 14:32:15.849 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^ help: consider using `_expensive_result2` instead
Dec 18 14:32:15.849 INFO [stderr] 
Dec 18 14:32:15.849 INFO [stderr] warning: unused variable: `expensive_result3`
Dec 18 14:32:15.849 INFO [stderr]   --> src/closures/learnClosure.rs:63:7
Dec 18 14:32:15.849 INFO [stderr]    |
Dec 18 14:32:15.849 INFO [stderr] 63 |   let expensive_result3 = |num: u32| -> u32{
Dec 18 14:32:15.849 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^ help: consider using `_expensive_result3` instead
Dec 18 14:32:15.849 INFO [stderr] 
Dec 18 14:32:15.849 INFO [stderr] warning: unused variable: `guess`
Dec 18 14:32:15.849 INFO [stderr]   --> src/adder/mod.rs:45:7
Dec 18 14:32:15.849 INFO [stderr]    |
Dec 18 14:32:15.849 INFO [stderr] 45 |   let guess = Guess::new(0);
Dec 18 14:32:15.849 INFO [stderr]    |       ^^^^^ help: consider using `_guess` instead
Dec 18 14:32:15.849 INFO [stderr] 
Dec 18 14:32:15.849 INFO [stderr] warning: unused variable: `y`
Dec 18 14:32:15.849 INFO [stderr]   --> src/adder/mod.rs:74:7
Dec 18 14:32:15.849 INFO [stderr]    |
Dec 18 14:32:15.849 INFO [stderr] 74 |   let y = 10;
Dec 18 14:32:15.849 INFO [stderr]    |       ^ help: consider using `_y` instead
Dec 18 14:32:15.849 INFO [stderr] 
Dec 18 14:32:15.928 INFO [stderr] warning: function is never used: `returns_summarizable`
Dec 18 14:32:15.928 INFO [stderr]    --> src/lessons/tryGenericTypes.rs:132:1
Dec 18 14:32:15.928 INFO [stderr]     |
Dec 18 14:32:15.928 INFO [stderr] 132 | fn returns_summarizable() -> impl Summary {
Dec 18 14:32:15.928 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.928 INFO [stderr]     |
Dec 18 14:32:15.928 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 14:32:15.928 INFO [stderr] 
Dec 18 14:32:15.932 INFO [stderr] warning: field is never used: `value`
Dec 18 14:32:15.933 INFO [stderr]  --> src/lessons/Guess.rs:2:3
Dec 18 14:32:15.933 INFO [stderr]   |
Dec 18 14:32:15.933 INFO [stderr] 2 |   value:u32,
Dec 18 14:32:15.933 INFO [stderr]   |   ^^^^^^^^^
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.933 INFO [stderr] warning: module `commonCollection` should have a snake case name such as `common_collection`
Dec 18 14:32:15.933 INFO [stderr]  --> src/lessons/mod.rs:1:1
Dec 18 14:32:15.933 INFO [stderr]   |
Dec 18 14:32:15.933 INFO [stderr] 1 | pub mod commonCollection;
Dec 18 14:32:15.933 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.933 INFO [stderr]   |
Dec 18 14:32:15.933 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.933 INFO [stderr] warning: function `tryCommonCollection` should have a snake case name such as `try_common_collection`
Dec 18 14:32:15.933 INFO [stderr]   --> src/lessons/commonCollection.rs:8:1
Dec 18 14:32:15.933 INFO [stderr]    |
Dec 18 14:32:15.933 INFO [stderr] 8  | / pub fn tryCommonCollection(){
Dec 18 14:32:15.933 INFO [stderr] 9  | |     let v = vec![1,2,3];
Dec 18 14:32:15.933 INFO [stderr] 10 | |     println!("vector value : {:#?}", v);
Dec 18 14:32:15.933 INFO [stderr] 11 | |
Dec 18 14:32:15.933 INFO [stderr] ...  |
Dec 18 14:32:15.933 INFO [stderr] 65 | |     println!("row data : {:?}", row);
Dec 18 14:32:15.933 INFO [stderr] 66 | | }
Dec 18 14:32:15.933 INFO [stderr]    | |_^
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.933 INFO [stderr] warning: module `tryStringCollection` should have a snake case name such as `try_string_collection`
Dec 18 14:32:15.933 INFO [stderr]  --> src/lessons/mod.rs:3:1
Dec 18 14:32:15.933 INFO [stderr]   |
Dec 18 14:32:15.933 INFO [stderr] 3 | pub mod tryStringCollection;
Dec 18 14:32:15.933 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.933 INFO [stderr] warning: function `tryUpdateString` should have a snake case name such as `try_update_string`
Dec 18 14:32:15.933 INFO [stderr]   --> src/lessons/tryStringCollection.rs:1:1
Dec 18 14:32:15.933 INFO [stderr]    |
Dec 18 14:32:15.933 INFO [stderr] 1  | / pub fn tryUpdateString(){
Dec 18 14:32:15.933 INFO [stderr] 2  | |   println!("==============================");
Dec 18 14:32:15.933 INFO [stderr] 3  | |
Dec 18 14:32:15.933 INFO [stderr] 4  | |   let mut s = String::from("foo");
Dec 18 14:32:15.933 INFO [stderr] ...  |
Dec 18 14:32:15.933 INFO [stderr] 37 | |   println!("==============================");
Dec 18 14:32:15.933 INFO [stderr] 38 | | }
Dec 18 14:32:15.933 INFO [stderr]    | |_^
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.933 INFO [stderr] warning: module `tryHashMapCollection` should have a snake case name such as `try_hash_map_collection`
Dec 18 14:32:15.933 INFO [stderr]  --> src/lessons/mod.rs:5:1
Dec 18 14:32:15.933 INFO [stderr]   |
Dec 18 14:32:15.933 INFO [stderr] 5 | pub mod tryHashMapCollection;
Dec 18 14:32:15.933 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.933 INFO [stderr] warning: function `tryHashMap` should have a snake case name such as `try_hash_map`
Dec 18 14:32:15.933 INFO [stderr]   --> src/lessons/tryHashMapCollection.rs:3:1
Dec 18 14:32:15.933 INFO [stderr]    |
Dec 18 14:32:15.933 INFO [stderr] 3  | / pub fn tryHashMap(){
Dec 18 14:32:15.933 INFO [stderr] 4  | |   println!("========================");
Dec 18 14:32:15.933 INFO [stderr] 5  | |
Dec 18 14:32:15.933 INFO [stderr] 6  | |   let mut scores = HashMap::new();
Dec 18 14:32:15.933 INFO [stderr] ...  |
Dec 18 14:32:15.933 INFO [stderr] 52 | |   println!("========================");
Dec 18 14:32:15.933 INFO [stderr] 53 | | }
Dec 18 14:32:15.933 INFO [stderr]    | |_^
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.933 INFO [stderr] warning: module `recoverableError` should have a snake case name such as `recoverable_error`
Dec 18 14:32:15.933 INFO [stderr]  --> src/lessons/mod.rs:7:1
Dec 18 14:32:15.933 INFO [stderr]   |
Dec 18 14:32:15.933 INFO [stderr] 7 | pub mod recoverableError;
Dec 18 14:32:15.933 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.933 INFO [stderr] warning: function `recoverableError` should have a snake case name such as `recoverable_error`
Dec 18 14:32:15.933 INFO [stderr]   --> src/lessons/recoverableError.rs:27:1
Dec 18 14:32:15.933 INFO [stderr]    |
Dec 18 14:32:15.933 INFO [stderr] 27 | / pub fn recoverableError(){
Dec 18 14:32:15.933 INFO [stderr] 28 | |   let f = File::open("hello.txt");
Dec 18 14:32:15.933 INFO [stderr] 29 | |   let t = match f{
Dec 18 14:32:15.933 INFO [stderr] 30 | |     Ok(file) => file,
Dec 18 14:32:15.933 INFO [stderr] ...  |
Dec 18 14:32:15.933 INFO [stderr] 54 | |   println!("file value : {:?}", t);
Dec 18 14:32:15.933 INFO [stderr] 55 | | }
Dec 18 14:32:15.933 INFO [stderr]    | |_^
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.933 INFO [stderr] warning: module `tryGenericTypes` should have a snake case name such as `try_generic_types`
Dec 18 14:32:15.933 INFO [stderr]  --> src/lessons/mod.rs:9:1
Dec 18 14:32:15.933 INFO [stderr]   |
Dec 18 14:32:15.933 INFO [stderr] 9 | pub mod tryGenericTypes;
Dec 18 14:32:15.933 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.933 INFO [stderr] 
Dec 18 14:32:15.943 INFO [stderr] warning: module `tryLifetime` should have a snake case name such as `try_lifetime`
Dec 18 14:32:15.943 INFO [stderr]   --> src/lessons/mod.rs:11:1
Dec 18 14:32:15.943 INFO [stderr]    |
Dec 18 14:32:15.943 INFO [stderr] 11 | pub mod tryLifetime;
Dec 18 14:32:15.943 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.943 INFO [stderr] 
Dec 18 14:32:15.943 INFO [stderr] warning: module `Rectangle` should have a snake case name such as `rectangle`
Dec 18 14:32:15.943 INFO [stderr]   --> src/lessons/mod.rs:13:1
Dec 18 14:32:15.943 INFO [stderr]    |
Dec 18 14:32:15.943 INFO [stderr] 13 | pub mod Rectangle;
Dec 18 14:32:15.943 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.943 INFO [stderr] 
Dec 18 14:32:15.943 INFO [stderr] warning: module `Guess` should have a snake case name such as `guess`
Dec 18 14:32:15.943 INFO [stderr]   --> src/lessons/mod.rs:15:1
Dec 18 14:32:15.943 INFO [stderr]    |
Dec 18 14:32:15.943 INFO [stderr] 15 | pub mod Guess;
Dec 18 14:32:15.943 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 18 14:32:15.943 INFO [stderr] 
Dec 18 14:32:15.943 INFO [stderr] warning: module `learnClosure` should have a snake case name such as `learn_closure`
Dec 18 14:32:15.943 INFO [stderr]  --> src/closures/mod.rs:8:1
Dec 18 14:32:15.943 INFO [stderr]   |
Dec 18 14:32:15.943 INFO [stderr] 8 | pub mod learnClosure;
Dec 18 14:32:15.943 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.943 INFO [stderr] 
Dec 18 14:32:15.943 INFO [stderr] warning: module `learnIterator` should have a snake case name such as `learn_iterator`
Dec 18 14:32:15.943 INFO [stderr]  --> src/closures/mod.rs:9:1
Dec 18 14:32:15.943 INFO [stderr]   |
Dec 18 14:32:15.943 INFO [stderr] 9 | pub mod learnIterator;
Dec 18 14:32:15.943 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.943 INFO [stderr] 
Dec 18 14:32:15.943 INFO [stderr] warning: function `learnIterator` should have a snake case name such as `learn_iterator`
Dec 18 14:32:15.943 INFO [stderr]   --> src/closures/learnIterator.rs:41:1
Dec 18 14:32:15.943 INFO [stderr]    |
Dec 18 14:32:15.943 INFO [stderr] 41 | / pub fn learnIterator(){
Dec 18 14:32:15.943 INFO [stderr] 42 | |   let v1 = vec![1,2,3,4];
Dec 18 14:32:15.943 INFO [stderr] 43 | |   let v1_iter = v1.iter();
Dec 18 14:32:15.943 INFO [stderr] 44 | |   for item in v1_iter{
Dec 18 14:32:15.943 INFO [stderr] ...  |
Dec 18 14:32:15.943 INFO [stderr] 64 | |   println!("============================");
Dec 18 14:32:15.944 INFO [stderr] 65 | | }
Dec 18 14:32:15.944 INFO [stderr]    | |_^
Dec 18 14:32:15.944 INFO [stderr] 
Dec 18 14:32:15.989 INFO [stderr] warning: function is never used: `returns_summarizable`
Dec 18 14:32:15.989 INFO [stderr]    --> src/lessons/tryGenericTypes.rs:132:1
Dec 18 14:32:15.989 INFO [stderr]     |
Dec 18 14:32:15.989 INFO [stderr] 132 | fn returns_summarizable() -> impl Summary {
Dec 18 14:32:15.989 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.989 INFO [stderr]     |
Dec 18 14:32:15.989 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 14:32:15.989 INFO [stderr] 
Dec 18 14:32:15.989 INFO [stderr] warning: field is never used: `value`
Dec 18 14:32:15.989 INFO [stderr]  --> src/lessons/Guess.rs:2:3
Dec 18 14:32:15.989 INFO [stderr]   |
Dec 18 14:32:15.989 INFO [stderr] 2 |   value:u32,
Dec 18 14:32:15.989 INFO [stderr]   |   ^^^^^^^^^
Dec 18 14:32:15.989 INFO [stderr] 
Dec 18 14:32:15.989 INFO [stderr] warning: module `commonCollection` should have a snake case name such as `common_collection`
Dec 18 14:32:15.989 INFO [stderr]  --> src/lessons/mod.rs:1:1
Dec 18 14:32:15.989 INFO [stderr]   |
Dec 18 14:32:15.989 INFO [stderr] 1 | pub mod commonCollection;
Dec 18 14:32:15.989 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.989 INFO [stderr]   |
Dec 18 14:32:15.989 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 18 14:32:15.989 INFO [stderr] 
Dec 18 14:32:15.989 INFO [stderr] warning: function `tryCommonCollection` should have a snake case name such as `try_common_collection`
Dec 18 14:32:15.989 INFO [stderr]   --> src/lessons/commonCollection.rs:8:1
Dec 18 14:32:15.989 INFO [stderr]    |
Dec 18 14:32:15.989 INFO [stderr] 8  | / pub fn tryCommonCollection(){
Dec 18 14:32:15.989 INFO [stderr] 9  | |     let v = vec![1,2,3];
Dec 18 14:32:15.989 INFO [stderr] 10 | |     println!("vector value : {:#?}", v);
Dec 18 14:32:15.989 INFO [stderr] 11 | |
Dec 18 14:32:15.989 INFO [stderr] ...  |
Dec 18 14:32:15.989 INFO [stderr] 65 | |     println!("row data : {:?}", row);
Dec 18 14:32:15.989 INFO [stderr] 66 | | }
Dec 18 14:32:15.989 INFO [stderr]    | |_^
Dec 18 14:32:15.989 INFO [stderr] 
Dec 18 14:32:15.989 INFO [stderr] warning: module `tryStringCollection` should have a snake case name such as `try_string_collection`
Dec 18 14:32:15.989 INFO [stderr]  --> src/lessons/mod.rs:3:1
Dec 18 14:32:15.989 INFO [stderr]   |
Dec 18 14:32:15.989 INFO [stderr] 3 | pub mod tryStringCollection;
Dec 18 14:32:15.989 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.989 INFO [stderr] 
Dec 18 14:32:15.989 INFO [stderr] warning: function `tryUpdateString` should have a snake case name such as `try_update_string`
Dec 18 14:32:15.989 INFO [stderr]   --> src/lessons/tryStringCollection.rs:1:1
Dec 18 14:32:15.989 INFO [stderr]    |
Dec 18 14:32:15.989 INFO [stderr] 1  | / pub fn tryUpdateString(){
Dec 18 14:32:15.989 INFO [stderr] 2  | |   println!("==============================");
Dec 18 14:32:15.989 INFO [stderr] 3  | |
Dec 18 14:32:15.989 INFO [stderr] 4  | |   let mut s = String::from("foo");
Dec 18 14:32:15.989 INFO [stderr] ...  |
Dec 18 14:32:15.989 INFO [stderr] 37 | |   println!("==============================");
Dec 18 14:32:15.989 INFO [stderr] 38 | | }
Dec 18 14:32:15.989 INFO [stderr]    | |_^
Dec 18 14:32:15.989 INFO [stderr] 
Dec 18 14:32:15.989 INFO [stderr] warning: module `tryHashMapCollection` should have a snake case name such as `try_hash_map_collection`
Dec 18 14:32:15.989 INFO [stderr]  --> src/lessons/mod.rs:5:1
Dec 18 14:32:15.989 INFO [stderr]   |
Dec 18 14:32:15.989 INFO [stderr] 5 | pub mod tryHashMapCollection;
Dec 18 14:32:15.989 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.989 INFO [stderr] 
Dec 18 14:32:15.989 INFO [stderr] warning: function `tryHashMap` should have a snake case name such as `try_hash_map`
Dec 18 14:32:15.989 INFO [stderr]   --> src/lessons/tryHashMapCollection.rs:3:1
Dec 18 14:32:15.989 INFO [stderr]    |
Dec 18 14:32:15.989 INFO [stderr] 3  | / pub fn tryHashMap(){
Dec 18 14:32:15.989 INFO [stderr] 4  | |   println!("========================");
Dec 18 14:32:15.989 INFO [stderr] 5  | |
Dec 18 14:32:15.989 INFO [stderr] 6  | |   let mut scores = HashMap::new();
Dec 18 14:32:15.989 INFO [stderr] ...  |
Dec 18 14:32:15.989 INFO [stderr] 52 | |   println!("========================");
Dec 18 14:32:15.989 INFO [stderr] 53 | | }
Dec 18 14:32:15.989 INFO [stderr]    | |_^
Dec 18 14:32:15.989 INFO [stderr] 
Dec 18 14:32:15.989 INFO [stderr] warning: module `recoverableError` should have a snake case name such as `recoverable_error`
Dec 18 14:32:15.989 INFO [stderr]  --> src/lessons/mod.rs:7:1
Dec 18 14:32:15.989 INFO [stderr]   |
Dec 18 14:32:15.989 INFO [stderr] 7 | pub mod recoverableError;
Dec 18 14:32:15.989 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.990 INFO [stderr] 
Dec 18 14:32:15.990 INFO [stderr] warning: function `recoverableError` should have a snake case name such as `recoverable_error`
Dec 18 14:32:15.990 INFO [stderr]   --> src/lessons/recoverableError.rs:27:1
Dec 18 14:32:15.990 INFO [stderr]    |
Dec 18 14:32:15.990 INFO [stderr] 27 | / pub fn recoverableError(){
Dec 18 14:32:15.990 INFO [stderr] 28 | |   let f = File::open("hello.txt");
Dec 18 14:32:15.990 INFO [stderr] 29 | |   let t = match f{
Dec 18 14:32:15.990 INFO [stderr] 30 | |     Ok(file) => file,
Dec 18 14:32:15.990 INFO [stderr] ...  |
Dec 18 14:32:15.990 INFO [stderr] 54 | |   println!("file value : {:?}", t);
Dec 18 14:32:15.990 INFO [stderr] 55 | | }
Dec 18 14:32:15.990 INFO [stderr]    | |_^
Dec 18 14:32:15.990 INFO [stderr] 
Dec 18 14:32:15.990 INFO [stderr] warning: module `tryGenericTypes` should have a snake case name such as `try_generic_types`
Dec 18 14:32:15.990 INFO [stderr]  --> src/lessons/mod.rs:9:1
Dec 18 14:32:15.990 INFO [stderr]   |
Dec 18 14:32:15.990 INFO [stderr] 9 | pub mod tryGenericTypes;
Dec 18 14:32:15.990 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.990 INFO [stderr] 
Dec 18 14:32:15.990 INFO [stderr] warning: module `tryLifetime` should have a snake case name such as `try_lifetime`
Dec 18 14:32:15.990 INFO [stderr]   --> src/lessons/mod.rs:11:1
Dec 18 14:32:15.990 INFO [stderr]    |
Dec 18 14:32:15.990 INFO [stderr] 11 | pub mod tryLifetime;
Dec 18 14:32:15.990 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.990 INFO [stderr] 
Dec 18 14:32:15.990 INFO [stderr] warning: module `Rectangle` should have a snake case name such as `rectangle`
Dec 18 14:32:15.990 INFO [stderr]   --> src/lessons/mod.rs:13:1
Dec 18 14:32:15.990 INFO [stderr]    |
Dec 18 14:32:15.990 INFO [stderr] 13 | pub mod Rectangle;
Dec 18 14:32:15.990 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 18 14:32:15.990 INFO [stderr] 
Dec 18 14:32:15.990 INFO [stderr] warning: module `Guess` should have a snake case name such as `guess`
Dec 18 14:32:15.990 INFO [stderr]   --> src/lessons/mod.rs:15:1
Dec 18 14:32:15.990 INFO [stderr]    |
Dec 18 14:32:15.990 INFO [stderr] 15 | pub mod Guess;
Dec 18 14:32:15.990 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 18 14:32:15.990 INFO [stderr] 
Dec 18 14:32:16.000 INFO [stderr] warning: module `learnClosure` should have a snake case name such as `learn_closure`
Dec 18 14:32:16.000 INFO [stderr]  --> src/closures/mod.rs:8:1
Dec 18 14:32:16.000 INFO [stderr]   |
Dec 18 14:32:16.000 INFO [stderr] 8 | pub mod learnClosure;
Dec 18 14:32:16.000 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:16.000 INFO [stderr] 
Dec 18 14:32:16.000 INFO [stderr] warning: module `learnIterator` should have a snake case name such as `learn_iterator`
Dec 18 14:32:16.000 INFO [stderr]  --> src/closures/mod.rs:9:1
Dec 18 14:32:16.000 INFO [stderr]   |
Dec 18 14:32:16.000 INFO [stderr] 9 | pub mod learnIterator;
Dec 18 14:32:16.000 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:16.000 INFO [stderr] 
Dec 18 14:32:16.000 INFO [stderr] warning: function `learnIterator` should have a snake case name such as `learn_iterator`
Dec 18 14:32:16.000 INFO [stderr]   --> src/closures/learnIterator.rs:41:1
Dec 18 14:32:16.000 INFO [stderr]    |
Dec 18 14:32:16.000 INFO [stderr] 41 | / pub fn learnIterator(){
Dec 18 14:32:16.000 INFO [stderr] 42 | |   let v1 = vec![1,2,3,4];
Dec 18 14:32:16.000 INFO [stderr] 43 | |   let v1_iter = v1.iter();
Dec 18 14:32:16.000 INFO [stderr] 44 | |   for item in v1_iter{
Dec 18 14:32:16.001 INFO [stderr] ...  |
Dec 18 14:32:16.001 INFO [stderr] 64 | |   println!("============================");
Dec 18 14:32:16.001 INFO [stderr] 65 | | }
Dec 18 14:32:16.001 INFO [stderr]    | |_^
Dec 18 14:32:16.001 INFO [stderr] 
Dec 18 14:32:16.555 INFO [stderr] warning: field is never used: `email`
Dec 18 14:32:16.555 INFO [stderr]   --> src/main.rs:19:5
Dec 18 14:32:16.555 INFO [stderr]    |
Dec 18 14:32:16.555 INFO [stderr] 19 |     email: String,
Dec 18 14:32:16.555 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 18 14:32:16.555 INFO [stderr]    |
Dec 18 14:32:16.555 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 14:32:16.555 INFO [stderr] 
Dec 18 14:32:16.555 INFO [stderr] warning: field is never used: `sign_in_count`
Dec 18 14:32:16.555 INFO [stderr]   --> src/main.rs:20:5
Dec 18 14:32:16.555 INFO [stderr]    |
Dec 18 14:32:16.555 INFO [stderr] 20 |     sign_in_count: u64,
Dec 18 14:32:16.555 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 18 14:32:16.555 INFO [stderr] 
Dec 18 14:32:16.555 INFO [stderr] warning: field is never used: `active`
Dec 18 14:32:16.555 INFO [stderr]   --> src/main.rs:21:5
Dec 18 14:32:16.556 INFO [stderr]    |
Dec 18 14:32:16.556 INFO [stderr] 21 |     active: bool
Dec 18 14:32:16.556 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 18 14:32:16.556 INFO [stderr] 
Dec 18 14:32:16.556 INFO [stderr] warning: constant `point1` should have an upper case name such as `POINT1`
Dec 18 14:32:16.556 INFO [stderr]    --> src/main.rs:100:5
Dec 18 14:32:16.556 INFO [stderr]     |
Dec 18 14:32:16.556 INFO [stderr] 100 |     const point1 :Point = Point(0,0,0);
Dec 18 14:32:16.556 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:16.556 INFO [stderr]     |
Dec 18 14:32:16.556 INFO [stderr]     = note: #[warn(non_upper_case_globals)] on by default
Dec 18 14:32:16.556 INFO [stderr] 
Dec 18 14:32:16.556 INFO [stderr] warning: constant `color1` should have an upper case name such as `COLOR1`
Dec 18 14:32:16.556 INFO [stderr]    --> src/main.rs:101:5
Dec 18 14:32:16.556 INFO [stderr]     |
Dec 18 14:32:16.556 INFO [stderr] 101 |     const color1 :Color = Color( 0, 0, 10);
Dec 18 14:32:16.556 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:16.556 INFO [stderr] 
Dec 18 14:32:16.744 INFO [stderr] warning: field is never used: `email`
Dec 18 14:32:16.744 INFO [stderr]   --> src/main.rs:19:5
Dec 18 14:32:16.744 INFO [stderr]    |
Dec 18 14:32:16.744 INFO [stderr] 19 |     email: String,
Dec 18 14:32:16.744 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 18 14:32:16.744 INFO [stderr]    |
Dec 18 14:32:16.744 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 14:32:16.744 INFO [stderr] 
Dec 18 14:32:16.744 INFO [stderr] warning: field is never used: `sign_in_count`
Dec 18 14:32:16.744 INFO [stderr]   --> src/main.rs:20:5
Dec 18 14:32:16.744 INFO [stderr]    |
Dec 18 14:32:16.744 INFO [stderr] 20 |     sign_in_count: u64,
Dec 18 14:32:16.744 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 18 14:32:16.744 INFO [stderr] 
Dec 18 14:32:16.744 INFO [stderr] warning: field is never used: `active`
Dec 18 14:32:16.744 INFO [stderr]   --> src/main.rs:21:5
Dec 18 14:32:16.744 INFO [stderr]    |
Dec 18 14:32:16.744 INFO [stderr] 21 |     active: bool
Dec 18 14:32:16.744 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 18 14:32:16.744 INFO [stderr] 
Dec 18 14:32:16.748 INFO [stderr] warning: constant `point1` should have an upper case name such as `POINT1`
Dec 18 14:32:16.748 INFO [stderr]    --> src/main.rs:100:5
Dec 18 14:32:16.748 INFO [stderr]     |
Dec 18 14:32:16.748 INFO [stderr] 100 |     const point1 :Point = Point(0,0,0);
Dec 18 14:32:16.748 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:16.748 INFO [stderr]     |
Dec 18 14:32:16.748 INFO [stderr]     = note: #[warn(non_upper_case_globals)] on by default
Dec 18 14:32:16.748 INFO [stderr] 
Dec 18 14:32:16.748 INFO [stderr] warning: constant `color1` should have an upper case name such as `COLOR1`
Dec 18 14:32:16.748 INFO [stderr]    --> src/main.rs:101:5
Dec 18 14:32:16.748 INFO [stderr]     |
Dec 18 14:32:16.748 INFO [stderr] 101 |     const color1 :Color = Color( 0, 0, 10);
Dec 18 14:32:16.748 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:32:16.748 INFO [stderr] 
Dec 18 14:32:16.788 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
Dec 18 14:32:17.170 INFO running `"docker" "inspect" "8b701771cd6fe598fa46685355914831b107e7ea453fd924929ba7002cf26a89"`
Dec 18 14:32:17.320 INFO running `"docker" "rm" "-f" "8b701771cd6fe598fa46685355914831b107e7ea453fd924929ba7002cf26a89"`
Dec 18 14:32:17.604 INFO [stdout] 8b701771cd6fe598fa46685355914831b107e7ea453fd924929ba7002cf26a89