Dec 19 20:25:27.662 INFO checking anztrax/learnrust against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 20:25:27.662 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/anztrax/learnrust:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:25:28.102 INFO [stdout] 59a430c1d113fbd88e3e3355a8c8b0c1b5ab95a0cfcd2e7dfba589944564ecb0
Dec 19 20:25:28.105 INFO running `"docker" "start" "-a" "59a430c1d113fbd88e3e3355a8c8b0c1b5ab95a0cfcd2e7dfba589944564ecb0"`
Dec 19 20:25:28.833 INFO [stderr]     Checking learnrust v0.1.0 (/opt/crater/workdir)
Dec 19 20:25:29.036 INFO [stderr] warning: unused import: `::lessons::Rectangle::Rectangle`
Dec 19 20:25:29.036 INFO [stderr]  --> src/adder/mod.rs:1:5
Dec 19 20:25:29.036 INFO [stderr]   |
Dec 19 20:25:29.036 INFO [stderr] 1 | use ::lessons::Rectangle::Rectangle;
Dec 19 20:25:29.036 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.036 INFO [stderr]   |
Dec 19 20:25:29.036 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 20:25:29.036 INFO [stderr] 
Dec 19 20:25:29.036 INFO [stderr] warning: unused import: `::lessons::Guess::Guess`
Dec 19 20:25:29.036 INFO [stderr]  --> src/adder/mod.rs:2:5
Dec 19 20:25:29.036 INFO [stderr]   |
Dec 19 20:25:29.036 INFO [stderr] 2 | use ::lessons::Guess::Guess;
Dec 19 20:25:29.036 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.036 INFO [stderr] 
Dec 19 20:25:29.036 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 20:25:29.036 INFO [stderr]   --> src/closures/learnIterator.rs:30:7
Dec 19 20:25:29.037 INFO [stderr]    |
Dec 19 20:25:29.037 INFO [stderr] 30 |     if(self.count < 6){
Dec 19 20:25:29.037 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 20:25:29.037 INFO [stderr]    |
Dec 19 20:25:29.037 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 20:25:29.037 INFO [stderr] 
Dec 19 20:25:29.104 INFO [stderr] warning: unnecessary parentheses around `if` condition
Dec 19 20:25:29.105 INFO [stderr]   --> src/closures/learnIterator.rs:30:7
Dec 19 20:25:29.105 INFO [stderr]    |
Dec 19 20:25:29.105 INFO [stderr] 30 |     if(self.count < 6){
Dec 19 20:25:29.105 INFO [stderr]    |       ^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 19 20:25:29.105 INFO [stderr]    |
Dec 19 20:25:29.105 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 20:25:29.105 INFO [stderr] 
Dec 19 20:25:29.245 INFO [stderr] warning: unused variable: `v_reference`
Dec 19 20:25:29.245 INFO [stderr]   --> src/lessons/commonCollection.rs:25:9
Dec 19 20:25:29.245 INFO [stderr]    |
Dec 19 20:25:29.245 INFO [stderr] 25 |     let v_reference = &v[v_index];
Dec 19 20:25:29.245 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_v_reference` instead
Dec 19 20:25:29.245 INFO [stderr]    |
Dec 19 20:25:29.246 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 20:25:29.246 INFO [stderr] 
Dec 19 20:25:29.246 INFO [stderr] warning: unused variable: `s2`
Dec 19 20:25:29.246 INFO [stderr]   --> src/lessons/tryStringCollection.rs:24:7
Dec 19 20:25:29.246 INFO [stderr]    |
Dec 19 20:25:29.246 INFO [stderr] 24 |   let s2 = String::from("tac");
Dec 19 20:25:29.246 INFO [stderr]    |       ^^ help: consider using `_s2` instead
Dec 19 20:25:29.246 INFO [stderr] 
Dec 19 20:25:29.246 INFO [stderr] warning: unused variable: `point2`
Dec 19 20:25:29.246 INFO [stderr]   --> src/lessons/tryGenericTypes.rs:48:7
Dec 19 20:25:29.246 INFO [stderr]    |
Dec 19 20:25:29.246 INFO [stderr] 48 |   let point2 = Point{x : 10.1, y: 20.2};
Dec 19 20:25:29.246 INFO [stderr]    |       ^^^^^^ help: consider using `_point2` instead
Dec 19 20:25:29.246 INFO [stderr] 
Dec 19 20:25:29.246 INFO [stderr] warning: unused variable: `point2_2`
Dec 19 20:25:29.246 INFO [stderr]   --> src/lessons/tryGenericTypes.rs:53:7
Dec 19 20:25:29.247 INFO [stderr]    |
Dec 19 20:25:29.247 INFO [stderr] 53 |   let point2_2 = Point2{x : 20, y : 20.1};
Dec 19 20:25:29.247 INFO [stderr]    |       ^^^^^^^^ help: consider using `_point2_2` instead
Dec 19 20:25:29.247 INFO [stderr] 
Dec 19 20:25:29.252 INFO [stderr] warning: unused variable: `intensity`
Dec 19 20:25:29.252 INFO [stderr]   --> src/closures/learnClosure.rs:41:40
Dec 19 20:25:29.252 INFO [stderr]    |
Dec 19 20:25:29.252 INFO [stderr] 41 | pub fn simulated_expensive_calculation(intensity: u32){
Dec 19 20:25:29.252 INFO [stderr]    |                                        ^^^^^^^^^ help: consider using `_intensity` instead
Dec 19 20:25:29.252 INFO [stderr] 
Dec 19 20:25:29.252 INFO [stderr] warning: unused variable: `expensive_result2`
Dec 19 20:25:29.252 INFO [stderr]   --> src/closures/learnClosure.rs:62:7
Dec 19 20:25:29.252 INFO [stderr]    |
Dec 19 20:25:29.252 INFO [stderr] 62 |   let expensive_result2 = expensive_calculation(intensity);
Dec 19 20:25:29.252 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^ help: consider using `_expensive_result2` instead
Dec 19 20:25:29.252 INFO [stderr] 
Dec 19 20:25:29.252 INFO [stderr] warning: unused variable: `expensive_result3`
Dec 19 20:25:29.252 INFO [stderr]   --> src/closures/learnClosure.rs:63:7
Dec 19 20:25:29.252 INFO [stderr]    |
Dec 19 20:25:29.252 INFO [stderr] 63 |   let expensive_result3 = |num: u32| -> u32{
Dec 19 20:25:29.252 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^ help: consider using `_expensive_result3` instead
Dec 19 20:25:29.252 INFO [stderr] 
Dec 19 20:25:29.387 INFO [stderr] warning: unused variable: `v_reference`
Dec 19 20:25:29.387 INFO [stderr]   --> src/lessons/commonCollection.rs:25:9
Dec 19 20:25:29.387 INFO [stderr]    |
Dec 19 20:25:29.387 INFO [stderr] 25 |     let v_reference = &v[v_index];
Dec 19 20:25:29.387 INFO [stderr]    |         ^^^^^^^^^^^ help: consider using `_v_reference` instead
Dec 19 20:25:29.387 INFO [stderr]    |
Dec 19 20:25:29.387 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 20:25:29.387 INFO [stderr] 
Dec 19 20:25:29.400 INFO [stderr] warning: unused variable: `s2`
Dec 19 20:25:29.400 INFO [stderr]   --> src/lessons/tryStringCollection.rs:24:7
Dec 19 20:25:29.400 INFO [stderr]    |
Dec 19 20:25:29.400 INFO [stderr] 24 |   let s2 = String::from("tac");
Dec 19 20:25:29.400 INFO [stderr]    |       ^^ help: consider using `_s2` instead
Dec 19 20:25:29.400 INFO [stderr] warning: function is never used: `returns_summarizable`
Dec 19 20:25:29.400 INFO [stderr]    --> src/lessons/tryGenericTypes.rs:132:1
Dec 19 20:25:29.400 INFO [stderr]     |
Dec 19 20:25:29.400 INFO [stderr] 132 | fn returns_summarizable() -> impl Summary {
Dec 19 20:25:29.400 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.400 INFO [stderr]     |
Dec 19 20:25:29.400 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 20:25:29.400 INFO [stderr] 
Dec 19 20:25:29.400 INFO [stderr] warning: field is never used: `value`
Dec 19 20:25:29.400 INFO [stderr]  --> src/lessons/Guess.rs:2:3
Dec 19 20:25:29.400 INFO [stderr]   |
Dec 19 20:25:29.400 INFO [stderr] 2 |   value:u32,
Dec 19 20:25:29.400 INFO [stderr]   |   ^^^^^^^^^
Dec 19 20:25:29.400 INFO [stderr] 
Dec 19 20:25:29.400 INFO [stderr] warning: module `commonCollection` should have a snake case name such as `common_collection`
Dec 19 20:25:29.400 INFO [stderr]  --> src/lessons/mod.rs:1:1
Dec 19 20:25:29.400 INFO [stderr]   |
Dec 19 20:25:29.400 INFO [stderr] 1 | pub mod commonCollection;
Dec 19 20:25:29.400 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.400 INFO [stderr]   |
Dec 19 20:25:29.400 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 20:25:29.400 INFO [stderr] 
Dec 19 20:25:29.400 INFO [stderr] warning: function `tryCommonCollection` should have a snake case name such as `try_common_collection`
Dec 19 20:25:29.400 INFO [stderr]   --> src/lessons/commonCollection.rs:8:1
Dec 19 20:25:29.400 INFO [stderr]    |
Dec 19 20:25:29.400 INFO [stderr] 8  | / pub fn tryCommonCollection(){
Dec 19 20:25:29.400 INFO [stderr] 9  | |     let v = vec![1,2,3];
Dec 19 20:25:29.400 INFO [stderr] 10 | |     println!("vector value : {:#?}", v);
Dec 19 20:25:29.400 INFO [stderr] 11 | |
Dec 19 20:25:29.400 INFO [stderr] ...  |
Dec 19 20:25:29.400 INFO [stderr] 65 | |     println!("row data : {:?}", row);
Dec 19 20:25:29.400 INFO [stderr] 66 | | }
Dec 19 20:25:29.400 INFO [stderr]    | |_^
Dec 19 20:25:29.400 INFO [stderr] 
Dec 19 20:25:29.400 INFO [stderr] warning: module `tryStringCollection` should have a snake case name such as `try_string_collection`
Dec 19 20:25:29.400 INFO [stderr]  --> src/lessons/mod.rs:3:1
Dec 19 20:25:29.400 INFO [stderr]   |
Dec 19 20:25:29.401 INFO [stderr] 3 | pub mod tryStringCollection;
Dec 19 20:25:29.401 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: function `tryUpdateString` should have a snake case name such as `try_update_string`
Dec 19 20:25:29.401 INFO [stderr]   --> src/lessons/tryStringCollection.rs:1:1
Dec 19 20:25:29.401 INFO [stderr]    |
Dec 19 20:25:29.401 INFO [stderr] 1  | / pub fn tryUpdateString(){
Dec 19 20:25:29.401 INFO [stderr] 2  | |   println!("==============================");
Dec 19 20:25:29.401 INFO [stderr] 3  | |
Dec 19 20:25:29.401 INFO [stderr] 4  | |   let mut s = String::from("foo");
Dec 19 20:25:29.401 INFO [stderr] ...  |
Dec 19 20:25:29.401 INFO [stderr] 37 | |   println!("==============================");
Dec 19 20:25:29.401 INFO [stderr] 38 | | }
Dec 19 20:25:29.401 INFO [stderr]    | |_^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: module `tryHashMapCollection` should have a snake case name such as `try_hash_map_collection`
Dec 19 20:25:29.401 INFO [stderr]  --> src/lessons/mod.rs:5:1
Dec 19 20:25:29.401 INFO [stderr]   |
Dec 19 20:25:29.401 INFO [stderr] 5 | pub mod tryHashMapCollection;
Dec 19 20:25:29.401 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: function `tryHashMap` should have a snake case name such as `try_hash_map`
Dec 19 20:25:29.401 INFO [stderr]   --> src/lessons/tryHashMapCollection.rs:3:1
Dec 19 20:25:29.401 INFO [stderr]    |
Dec 19 20:25:29.401 INFO [stderr] 3  | / pub fn tryHashMap(){
Dec 19 20:25:29.401 INFO [stderr] 4  | |   println!("========================");
Dec 19 20:25:29.401 INFO [stderr] 5  | |
Dec 19 20:25:29.401 INFO [stderr] 6  | |   let mut scores = HashMap::new();
Dec 19 20:25:29.401 INFO [stderr] ...  |
Dec 19 20:25:29.401 INFO [stderr] 52 | |   println!("========================");
Dec 19 20:25:29.401 INFO [stderr] 53 | | }
Dec 19 20:25:29.401 INFO [stderr]    | |_^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: module `recoverableError` should have a snake case name such as `recoverable_error`
Dec 19 20:25:29.401 INFO [stderr]  --> src/lessons/mod.rs:7:1
Dec 19 20:25:29.401 INFO [stderr]   |
Dec 19 20:25:29.401 INFO [stderr] 7 | pub mod recoverableError;
Dec 19 20:25:29.401 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: function `recoverableError` should have a snake case name such as `recoverable_error`
Dec 19 20:25:29.401 INFO [stderr]   --> src/lessons/recoverableError.rs:27:1
Dec 19 20:25:29.401 INFO [stderr]    |
Dec 19 20:25:29.401 INFO [stderr] 27 | / pub fn recoverableError(){
Dec 19 20:25:29.401 INFO [stderr] 28 | |   let f = File::open("hello.txt");
Dec 19 20:25:29.401 INFO [stderr] 29 | |   let t = match f{
Dec 19 20:25:29.401 INFO [stderr] 30 | |     Ok(file) => file,
Dec 19 20:25:29.401 INFO [stderr] ...  |
Dec 19 20:25:29.401 INFO [stderr] 54 | |   println!("file value : {:?}", t);
Dec 19 20:25:29.401 INFO [stderr] 55 | | }
Dec 19 20:25:29.401 INFO [stderr]    | |_^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: module `tryGenericTypes` should have a snake case name such as `try_generic_types`
Dec 19 20:25:29.401 INFO [stderr]  --> src/lessons/mod.rs:9:1
Dec 19 20:25:29.401 INFO [stderr]   |
Dec 19 20:25:29.401 INFO [stderr] 9 | pub mod tryGenericTypes;
Dec 19 20:25:29.401 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: module `tryLifetime` should have a snake case name such as `try_lifetime`
Dec 19 20:25:29.401 INFO [stderr]   --> src/lessons/mod.rs:11:1
Dec 19 20:25:29.401 INFO [stderr]    |
Dec 19 20:25:29.401 INFO [stderr] 11 | pub mod tryLifetime;
Dec 19 20:25:29.401 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: module `Rectangle` should have a snake case name such as `rectangle`
Dec 19 20:25:29.401 INFO [stderr]   --> src/lessons/mod.rs:13:1
Dec 19 20:25:29.401 INFO [stderr]    |
Dec 19 20:25:29.401 INFO [stderr] 13 | pub mod Rectangle;
Dec 19 20:25:29.401 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: module `Guess` should have a snake case name such as `guess`
Dec 19 20:25:29.401 INFO [stderr]   --> src/lessons/mod.rs:15:1
Dec 19 20:25:29.401 INFO [stderr]    |
Dec 19 20:25:29.401 INFO [stderr] 15 | pub mod Guess;
Dec 19 20:25:29.401 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: module `learnClosure` should have a snake case name such as `learn_closure`
Dec 19 20:25:29.401 INFO [stderr]  --> src/closures/mod.rs:8:1
Dec 19 20:25:29.401 INFO [stderr]   |
Dec 19 20:25:29.401 INFO [stderr] 8 | pub mod learnClosure;
Dec 19 20:25:29.401 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: module `learnIterator` should have a snake case name such as `learn_iterator`
Dec 19 20:25:29.401 INFO [stderr]  --> src/closures/mod.rs:9:1
Dec 19 20:25:29.401 INFO [stderr]   |
Dec 19 20:25:29.401 INFO [stderr] 9 | pub mod learnIterator;
Dec 19 20:25:29.401 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.401 INFO [stderr] 
Dec 19 20:25:29.401 INFO [stderr] warning: function `learnIterator` should have a snake case name such as `learn_iterator`
Dec 19 20:25:29.402 INFO [stderr]   --> src/closures/learnIterator.rs:41:1
Dec 19 20:25:29.402 INFO [stderr]    |
Dec 19 20:25:29.402 INFO [stderr] 41 | / pub fn learnIterator(){
Dec 19 20:25:29.402 INFO [stderr] 42 | |   let v1 = vec![1,2,3,4];
Dec 19 20:25:29.402 INFO [stderr] 43 | |   let v1_iter = v1.iter();
Dec 19 20:25:29.402 INFO [stderr] 44 | |   for item in v1_iter{
Dec 19 20:25:29.402 INFO [stderr] ...  |
Dec 19 20:25:29.402 INFO [stderr] 64 | |   println!("============================");
Dec 19 20:25:29.402 INFO [stderr] 65 | | }
Dec 19 20:25:29.402 INFO [stderr]    | |_^
Dec 19 20:25:29.402 INFO [stderr] 
Dec 19 20:25:29.402 INFO [stderr] 
Dec 19 20:25:29.402 INFO [stderr] warning: unused variable: `point2`
Dec 19 20:25:29.402 INFO [stderr]   --> src/lessons/tryGenericTypes.rs:48:7
Dec 19 20:25:29.402 INFO [stderr]    |
Dec 19 20:25:29.402 INFO [stderr] 48 |   let point2 = Point{x : 10.1, y: 20.2};
Dec 19 20:25:29.402 INFO [stderr]    |       ^^^^^^ help: consider using `_point2` instead
Dec 19 20:25:29.402 INFO [stderr] 
Dec 19 20:25:29.402 INFO [stderr] warning: unused variable: `point2_2`
Dec 19 20:25:29.402 INFO [stderr]   --> src/lessons/tryGenericTypes.rs:53:7
Dec 19 20:25:29.402 INFO [stderr]    |
Dec 19 20:25:29.402 INFO [stderr] 53 |   let point2_2 = Point2{x : 20, y : 20.1};
Dec 19 20:25:29.402 INFO [stderr]    |       ^^^^^^^^ help: consider using `_point2_2` instead
Dec 19 20:25:29.402 INFO [stderr] 
Dec 19 20:25:29.402 INFO [stderr] warning: unused variable: `intensity`
Dec 19 20:25:29.402 INFO [stderr]   --> src/closures/learnClosure.rs:41:40
Dec 19 20:25:29.402 INFO [stderr]    |
Dec 19 20:25:29.402 INFO [stderr] 41 | pub fn simulated_expensive_calculation(intensity: u32){
Dec 19 20:25:29.402 INFO [stderr]    |                                        ^^^^^^^^^ help: consider using `_intensity` instead
Dec 19 20:25:29.402 INFO [stderr] 
Dec 19 20:25:29.402 INFO [stderr] warning: unused variable: `expensive_result2`
Dec 19 20:25:29.402 INFO [stderr]   --> src/closures/learnClosure.rs:62:7
Dec 19 20:25:29.402 INFO [stderr]    |
Dec 19 20:25:29.402 INFO [stderr] 62 |   let expensive_result2 = expensive_calculation(intensity);
Dec 19 20:25:29.402 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^ help: consider using `_expensive_result2` instead
Dec 19 20:25:29.402 INFO [stderr] 
Dec 19 20:25:29.402 INFO [stderr] warning: unused variable: `expensive_result3`
Dec 19 20:25:29.402 INFO [stderr]   --> src/closures/learnClosure.rs:63:7
Dec 19 20:25:29.402 INFO [stderr]    |
Dec 19 20:25:29.402 INFO [stderr] 63 |   let expensive_result3 = |num: u32| -> u32{
Dec 19 20:25:29.402 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^ help: consider using `_expensive_result3` instead
Dec 19 20:25:29.402 INFO [stderr] 
Dec 19 20:25:29.402 INFO [stderr] warning: unused variable: `guess`
Dec 19 20:25:29.402 INFO [stderr]   --> src/adder/mod.rs:45:7
Dec 19 20:25:29.402 INFO [stderr]    |
Dec 19 20:25:29.402 INFO [stderr] 45 |   let guess = Guess::new(0);
Dec 19 20:25:29.402 INFO [stderr]    |       ^^^^^ help: consider using `_guess` instead
Dec 19 20:25:29.402 INFO [stderr] 
Dec 19 20:25:29.402 INFO [stderr] warning: unused variable: `y`
Dec 19 20:25:29.402 INFO [stderr]   --> src/adder/mod.rs:74:7
Dec 19 20:25:29.402 INFO [stderr]    |
Dec 19 20:25:29.402 INFO [stderr] 74 |   let y = 10;
Dec 19 20:25:29.402 INFO [stderr]    |       ^ help: consider using `_y` instead
Dec 19 20:25:29.402 INFO [stderr] 
Dec 19 20:25:29.492 INFO [stderr] warning: function is never used: `returns_summarizable`
Dec 19 20:25:29.492 INFO [stderr]    --> src/lessons/tryGenericTypes.rs:132:1
Dec 19 20:25:29.492 INFO [stderr]     |
Dec 19 20:25:29.492 INFO [stderr] 132 | fn returns_summarizable() -> impl Summary {
Dec 19 20:25:29.492 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.492 INFO [stderr]     |
Dec 19 20:25:29.492 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 20:25:29.492 INFO [stderr] 
Dec 19 20:25:29.492 INFO [stderr] warning: field is never used: `value`
Dec 19 20:25:29.492 INFO [stderr]  --> src/lessons/Guess.rs:2:3
Dec 19 20:25:29.492 INFO [stderr]   |
Dec 19 20:25:29.492 INFO [stderr] 2 |   value:u32,
Dec 19 20:25:29.492 INFO [stderr]   |   ^^^^^^^^^
Dec 19 20:25:29.492 INFO [stderr] 
Dec 19 20:25:29.492 INFO [stderr] warning: module `commonCollection` should have a snake case name such as `common_collection`
Dec 19 20:25:29.492 INFO [stderr]  --> src/lessons/mod.rs:1:1
Dec 19 20:25:29.492 INFO [stderr]   |
Dec 19 20:25:29.492 INFO [stderr] 1 | pub mod commonCollection;
Dec 19 20:25:29.492 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.492 INFO [stderr]   |
Dec 19 20:25:29.492 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 19 20:25:29.492 INFO [stderr] 
Dec 19 20:25:29.492 INFO [stderr] warning: function `tryCommonCollection` should have a snake case name such as `try_common_collection`
Dec 19 20:25:29.492 INFO [stderr]   --> src/lessons/commonCollection.rs:8:1
Dec 19 20:25:29.493 INFO [stderr]    |
Dec 19 20:25:29.493 INFO [stderr] 8  | / pub fn tryCommonCollection(){
Dec 19 20:25:29.493 INFO [stderr] 9  | |     let v = vec![1,2,3];
Dec 19 20:25:29.493 INFO [stderr] 10 | |     println!("vector value : {:#?}", v);
Dec 19 20:25:29.493 INFO [stderr] 11 | |
Dec 19 20:25:29.493 INFO [stderr] ...  |
Dec 19 20:25:29.493 INFO [stderr] 65 | |     println!("row data : {:?}", row);
Dec 19 20:25:29.493 INFO [stderr] 66 | | }
Dec 19 20:25:29.493 INFO [stderr]    | |_^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: module `tryStringCollection` should have a snake case name such as `try_string_collection`
Dec 19 20:25:29.493 INFO [stderr]  --> src/lessons/mod.rs:3:1
Dec 19 20:25:29.493 INFO [stderr]   |
Dec 19 20:25:29.493 INFO [stderr] 3 | pub mod tryStringCollection;
Dec 19 20:25:29.493 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: function `tryUpdateString` should have a snake case name such as `try_update_string`
Dec 19 20:25:29.493 INFO [stderr]   --> src/lessons/tryStringCollection.rs:1:1
Dec 19 20:25:29.493 INFO [stderr]    |
Dec 19 20:25:29.493 INFO [stderr] 1  | / pub fn tryUpdateString(){
Dec 19 20:25:29.493 INFO [stderr] 2  | |   println!("==============================");
Dec 19 20:25:29.493 INFO [stderr] 3  | |
Dec 19 20:25:29.493 INFO [stderr] 4  | |   let mut s = String::from("foo");
Dec 19 20:25:29.493 INFO [stderr] ...  |
Dec 19 20:25:29.493 INFO [stderr] 37 | |   println!("==============================");
Dec 19 20:25:29.493 INFO [stderr] 38 | | }
Dec 19 20:25:29.493 INFO [stderr]    | |_^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: module `tryHashMapCollection` should have a snake case name such as `try_hash_map_collection`
Dec 19 20:25:29.493 INFO [stderr]  --> src/lessons/mod.rs:5:1
Dec 19 20:25:29.493 INFO [stderr]   |
Dec 19 20:25:29.493 INFO [stderr] 5 | pub mod tryHashMapCollection;
Dec 19 20:25:29.493 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: function `tryHashMap` should have a snake case name such as `try_hash_map`
Dec 19 20:25:29.493 INFO [stderr]   --> src/lessons/tryHashMapCollection.rs:3:1
Dec 19 20:25:29.493 INFO [stderr]    |
Dec 19 20:25:29.493 INFO [stderr] 3  | / pub fn tryHashMap(){
Dec 19 20:25:29.493 INFO [stderr] 4  | |   println!("========================");
Dec 19 20:25:29.493 INFO [stderr] 5  | |
Dec 19 20:25:29.493 INFO [stderr] 6  | |   let mut scores = HashMap::new();
Dec 19 20:25:29.493 INFO [stderr] ...  |
Dec 19 20:25:29.493 INFO [stderr] 52 | |   println!("========================");
Dec 19 20:25:29.493 INFO [stderr] 53 | | }
Dec 19 20:25:29.493 INFO [stderr]    | |_^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: module `recoverableError` should have a snake case name such as `recoverable_error`
Dec 19 20:25:29.493 INFO [stderr]  --> src/lessons/mod.rs:7:1
Dec 19 20:25:29.493 INFO [stderr]   |
Dec 19 20:25:29.493 INFO [stderr] 7 | pub mod recoverableError;
Dec 19 20:25:29.493 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: function `recoverableError` should have a snake case name such as `recoverable_error`
Dec 19 20:25:29.493 INFO [stderr]   --> src/lessons/recoverableError.rs:27:1
Dec 19 20:25:29.493 INFO [stderr]    |
Dec 19 20:25:29.493 INFO [stderr] 27 | / pub fn recoverableError(){
Dec 19 20:25:29.493 INFO [stderr] 28 | |   let f = File::open("hello.txt");
Dec 19 20:25:29.493 INFO [stderr] 29 | |   let t = match f{
Dec 19 20:25:29.493 INFO [stderr] 30 | |     Ok(file) => file,
Dec 19 20:25:29.493 INFO [stderr] ...  |
Dec 19 20:25:29.493 INFO [stderr] 54 | |   println!("file value : {:?}", t);
Dec 19 20:25:29.493 INFO [stderr] 55 | | }
Dec 19 20:25:29.493 INFO [stderr]    | |_^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: module `tryGenericTypes` should have a snake case name such as `try_generic_types`
Dec 19 20:25:29.493 INFO [stderr]  --> src/lessons/mod.rs:9:1
Dec 19 20:25:29.493 INFO [stderr]   |
Dec 19 20:25:29.493 INFO [stderr] 9 | pub mod tryGenericTypes;
Dec 19 20:25:29.493 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: module `tryLifetime` should have a snake case name such as `try_lifetime`
Dec 19 20:25:29.493 INFO [stderr]   --> src/lessons/mod.rs:11:1
Dec 19 20:25:29.493 INFO [stderr]    |
Dec 19 20:25:29.493 INFO [stderr] 11 | pub mod tryLifetime;
Dec 19 20:25:29.493 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: module `Rectangle` should have a snake case name such as `rectangle`
Dec 19 20:25:29.493 INFO [stderr]   --> src/lessons/mod.rs:13:1
Dec 19 20:25:29.493 INFO [stderr]    |
Dec 19 20:25:29.493 INFO [stderr] 13 | pub mod Rectangle;
Dec 19 20:25:29.493 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.493 INFO [stderr] warning: module `Guess` should have a snake case name such as `guess`
Dec 19 20:25:29.493 INFO [stderr]   --> src/lessons/mod.rs:15:1
Dec 19 20:25:29.493 INFO [stderr]    |
Dec 19 20:25:29.493 INFO [stderr] 15 | pub mod Guess;
Dec 19 20:25:29.493 INFO [stderr]    | ^^^^^^^^^^^^^^
Dec 19 20:25:29.493 INFO [stderr] 
Dec 19 20:25:29.494 INFO [stderr] warning: module `learnClosure` should have a snake case name such as `learn_closure`
Dec 19 20:25:29.494 INFO [stderr]  --> src/closures/mod.rs:8:1
Dec 19 20:25:29.494 INFO [stderr]   |
Dec 19 20:25:29.494 INFO [stderr] 8 | pub mod learnClosure;
Dec 19 20:25:29.494 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.494 INFO [stderr] 
Dec 19 20:25:29.494 INFO [stderr] warning: module `learnIterator` should have a snake case name such as `learn_iterator`
Dec 19 20:25:29.494 INFO [stderr]  --> src/closures/mod.rs:9:1
Dec 19 20:25:29.494 INFO [stderr]   |
Dec 19 20:25:29.494 INFO [stderr] 9 | pub mod learnIterator;
Dec 19 20:25:29.494 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:29.494 INFO [stderr] 
Dec 19 20:25:29.494 INFO [stderr] warning: function `learnIterator` should have a snake case name such as `learn_iterator`
Dec 19 20:25:29.494 INFO [stderr]   --> src/closures/learnIterator.rs:41:1
Dec 19 20:25:29.494 INFO [stderr]    |
Dec 19 20:25:29.494 INFO [stderr] 41 | / pub fn learnIterator(){
Dec 19 20:25:29.494 INFO [stderr] 42 | |   let v1 = vec![1,2,3,4];
Dec 19 20:25:29.494 INFO [stderr] 43 | |   let v1_iter = v1.iter();
Dec 19 20:25:29.494 INFO [stderr] 44 | |   for item in v1_iter{
Dec 19 20:25:29.494 INFO [stderr] ...  |
Dec 19 20:25:29.494 INFO [stderr] 64 | |   println!("============================");
Dec 19 20:25:29.494 INFO [stderr] 65 | | }
Dec 19 20:25:29.494 INFO [stderr]    | |_^
Dec 19 20:25:29.494 INFO [stderr] 
Dec 19 20:25:30.269 INFO [stderr] warning: field is never used: `email`
Dec 19 20:25:30.269 INFO [stderr]   --> src/main.rs:19:5
Dec 19 20:25:30.269 INFO [stderr]    |
Dec 19 20:25:30.269 INFO [stderr] 19 |     email: String,
Dec 19 20:25:30.269 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 20:25:30.269 INFO [stderr]    |
Dec 19 20:25:30.269 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 20:25:30.269 INFO [stderr] 
Dec 19 20:25:30.269 INFO [stderr] warning: field is never used: `sign_in_count`
Dec 19 20:25:30.269 INFO [stderr]   --> src/main.rs:20:5
Dec 19 20:25:30.269 INFO [stderr]    |
Dec 19 20:25:30.269 INFO [stderr] 20 |     sign_in_count: u64,
Dec 19 20:25:30.269 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 20:25:30.269 INFO [stderr] 
Dec 19 20:25:30.269 INFO [stderr] warning: field is never used: `active`
Dec 19 20:25:30.269 INFO [stderr]   --> src/main.rs:21:5
Dec 19 20:25:30.269 INFO [stderr]    |
Dec 19 20:25:30.269 INFO [stderr] 21 |     active: bool
Dec 19 20:25:30.269 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 19 20:25:30.269 INFO [stderr] 
Dec 19 20:25:30.269 INFO [stderr] warning: constant `point1` should have an upper case name such as `POINT1`
Dec 19 20:25:30.269 INFO [stderr]    --> src/main.rs:100:5
Dec 19 20:25:30.269 INFO [stderr]     |
Dec 19 20:25:30.269 INFO [stderr] 100 |     const point1 :Point = Point(0,0,0);
Dec 19 20:25:30.269 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:30.269 INFO [stderr]     |
Dec 19 20:25:30.269 INFO [stderr]     = note: #[warn(non_upper_case_globals)] on by default
Dec 19 20:25:30.269 INFO [stderr] 
Dec 19 20:25:30.269 INFO [stderr] warning: constant `color1` should have an upper case name such as `COLOR1`
Dec 19 20:25:30.269 INFO [stderr]    --> src/main.rs:101:5
Dec 19 20:25:30.269 INFO [stderr]     |
Dec 19 20:25:30.269 INFO [stderr] 101 |     const color1 :Color = Color( 0, 0, 10);
Dec 19 20:25:30.269 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:30.269 INFO [stderr] 
Dec 19 20:25:30.332 INFO [stderr] warning: field is never used: `email`
Dec 19 20:25:30.332 INFO [stderr]   --> src/main.rs:19:5
Dec 19 20:25:30.332 INFO [stderr]    |
Dec 19 20:25:30.332 INFO [stderr] 19 |     email: String,
Dec 19 20:25:30.332 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 20:25:30.332 INFO [stderr]    |
Dec 19 20:25:30.332 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 20:25:30.332 INFO [stderr] 
Dec 19 20:25:30.332 INFO [stderr] warning: field is never used: `sign_in_count`
Dec 19 20:25:30.332 INFO [stderr]   --> src/main.rs:20:5
Dec 19 20:25:30.332 INFO [stderr]    |
Dec 19 20:25:30.332 INFO [stderr] 20 |     sign_in_count: u64,
Dec 19 20:25:30.332 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 19 20:25:30.332 INFO [stderr] 
Dec 19 20:25:30.332 INFO [stderr] warning: field is never used: `active`
Dec 19 20:25:30.332 INFO [stderr]   --> src/main.rs:21:5
Dec 19 20:25:30.332 INFO [stderr]    |
Dec 19 20:25:30.332 INFO [stderr] 21 |     active: bool
Dec 19 20:25:30.332 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 19 20:25:30.332 INFO [stderr] 
Dec 19 20:25:30.333 INFO [stderr] warning: constant `point1` should have an upper case name such as `POINT1`
Dec 19 20:25:30.333 INFO [stderr]    --> src/main.rs:100:5
Dec 19 20:25:30.333 INFO [stderr]     |
Dec 19 20:25:30.333 INFO [stderr] 100 |     const point1 :Point = Point(0,0,0);
Dec 19 20:25:30.333 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:30.333 INFO [stderr]     |
Dec 19 20:25:30.333 INFO [stderr]     = note: #[warn(non_upper_case_globals)] on by default
Dec 19 20:25:30.333 INFO [stderr] 
Dec 19 20:25:30.333 INFO [stderr] warning: constant `color1` should have an upper case name such as `COLOR1`
Dec 19 20:25:30.333 INFO [stderr]    --> src/main.rs:101:5
Dec 19 20:25:30.333 INFO [stderr]     |
Dec 19 20:25:30.333 INFO [stderr] 101 |     const color1 :Color = Color( 0, 0, 10);
Dec 19 20:25:30.333 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:25:30.333 INFO [stderr] 
Dec 19 20:25:30.357 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.55s
Dec 19 20:25:30.806 INFO running `"docker" "inspect" "59a430c1d113fbd88e3e3355a8c8b0c1b5ab95a0cfcd2e7dfba589944564ecb0"`
Dec 19 20:25:31.112 INFO running `"docker" "rm" "-f" "59a430c1d113fbd88e3e3355a8c8b0c1b5ab95a0cfcd2e7dfba589944564ecb0"`
Dec 19 20:25:31.380 INFO [stdout] 59a430c1d113fbd88e3e3355a8c8b0c1b5ab95a0cfcd2e7dfba589944564ecb0