[INFO] cloning repository https://github.com/messi18/rust-programming-
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/messi18/rust-programming-" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmessi18%2Frust-programming-", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmessi18%2Frust-programming-'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec972d023e787c308383fff35ad0bdbbc44cd738
[INFO] testing messi18/rust-programming- against master#1ef7943ee607160a564655b6596f83670ef95df5 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmessi18%2Frust-programming-" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/messi18/rust-programming-
[INFO] finished tweaking git repo https://github.com/messi18/rust-programming-
[INFO] tweaked toml for git repo https://github.com/messi18/rust-programming- written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/messi18/rust-programming- on toolchain 1ef7943ee607160a564655b6596f83670ef95df5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/messi18/rust-programming- already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c31e84cb7b8a1ad39e95ce45248da2c9f5778a5919736722318a89e4402c0263
[INFO] running `Command { std: "docker" "start" "-a" "c31e84cb7b8a1ad39e95ce45248da2c9f5778a5919736722318a89e4402c0263", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c31e84cb7b8a1ad39e95ce45248da2c9f5778a5919736722318a89e4402c0263", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c31e84cb7b8a1ad39e95ce45248da2c9f5778a5919736722318a89e4402c0263", kill_on_drop: false }`
[INFO] [stdout] c31e84cb7b8a1ad39e95ce45248da2c9f5778a5919736722318a89e4402c0263
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aad09e3f9dcacc0dafc2ff78100357be8e8aab8679ddfcb598fabc32780c685b
[INFO] running `Command { std: "docker" "start" "-a" "aad09e3f9dcacc0dafc2ff78100357be8e8aab8679ddfcb598fabc32780c685b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_programming_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `use_string` and `use_vec`
[INFO] [stdout]  --> src/ch8.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use crate::ch8::{use_string, use_vec};
[INFO] [stdout]   |                      ^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ch13::calculation_intensity`
[INFO] [stdout]   --> src/ch13.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     use crate::ch13::calculation_intensity;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ch16::use_thread`
[INFO] [stdout]   --> src/ch16.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     use crate::ch16::use_thread;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/ch12.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let contents = run(config).unwrap_or_else(|e| {
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `intensity`
[INFO] [stdout]   --> src/ch13.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn workout(intensity:i32) {
[INFO] [stdout]    |            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run3_1` is never used
[INFO] [stdout]   --> src/ch4.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn run3_1() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run3_2` is never used
[INFO] [stdout]   --> src/ch4.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn run3_2() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run3_3` is never used
[INFO] [stdout]   --> src/ch4.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn run3_3() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run3_5` is never used
[INFO] [stdout]   --> src/ch4.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn run3_5() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ownership` is never used
[INFO] [stdout]   --> src/ch4.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn get_ownership() -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ownership_back` is never used
[INFO] [stdout]   --> src/ch4.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn get_ownership_back(s:String)-> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_first_word` is never used
[INFO] [stdout]   --> src/ch4.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn get_first_word(s:&String) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/ch5.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_user` is never used
[INFO] [stdout]   --> src/ch5.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn build_user(mail:String, username:String) -> User {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]   --> src/ch10.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn largest<T: PartialOrd + Copy >(list: &[T]) -> T {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_10` is never used
[INFO] [stdout]   --> src/ch10.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn test_10() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/ch10.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Point<X1,Y1> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]   --> src/ch10.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl <X1 ,Y1> Point<X1,Y1> {
[INFO] [stdout]    | -------------------------- method in this implementation
[INFO] [stdout] 46 |     fn x(&self)->&X1 {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `distance_from_origin` is never used
[INFO] [stdout]   --> src/ch10.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl Point<f32,f32> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 69 |     fn distance_from_origin(&self)-> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_iter_impl` is never used
[INFO] [stdout]   --> src/ch10.rs:74:4
[INFO] [stdout]    |
[INFO] [stdout] 74 | fn test_iter_impl() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_vec` is never used
[INFO] [stdout]   --> src/ch8.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn use_vec() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_string` is never used
[INFO] [stdout]   --> src/ch8.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn use_string() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_grep` is never used
[INFO] [stdout]  --> src/ch12.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn simple_grep(args:&[String])  {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ch12.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn run(config: Config) -> Result<String,Box<dyn Error>> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Config` is never constructed
[INFO] [stdout]   --> src/ch12.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Config {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/ch12.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Config {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 28 |     fn new(args: &[String]) -> Result<Config, &'static str> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculation_intensity` is never used
[INFO] [stdout]  --> src/ch13.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn calculation_intensity(intensity:i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `workout` is never used
[INFO] [stdout]   --> src/ch13.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn workout(intensity:i32) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cacher` is never constructed
[INFO] [stdout]   --> src/ch13.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Cacher<T>
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/ch13.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | / impl <T> Cacher<T>
[INFO] [stdout] 28 | |     where T : Fn(i32)-> i32
[INFO] [stdout]    | |___________________________- associated items in this implementation
[INFO] [stdout] 29 |   {
[INFO] [stdout] 30 |       fn new(f: T) -> Cacher<T> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |       fn value(&mut self, i:i32) -> i32 {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBox` is never constructed
[INFO] [stdout]  --> src/ch15.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct MyBox<T> (T);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/ch15.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl <T> MyBox<T> {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 13 |     fn new(t:T)-> MyBox<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_my_box` is never used
[INFO] [stdout]   --> src/ch15.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn use_my_box() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_thread` is never used
[INFO] [stdout]  --> src/ch16.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn use_thread() {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `fileName` should have a snake case name
[INFO] [stdout]   --> src/ch12.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fileName: String,
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `file_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fileName` should have a snake case name
[INFO] [stdout]   --> src/ch12.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let fileName = args[1].clone();
[INFO] [stdout]    |             ^^^^^^^^ help: convert the identifier to snake case: `file_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "aad09e3f9dcacc0dafc2ff78100357be8e8aab8679ddfcb598fabc32780c685b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aad09e3f9dcacc0dafc2ff78100357be8e8aab8679ddfcb598fabc32780c685b", kill_on_drop: false }`
[INFO] [stdout] aad09e3f9dcacc0dafc2ff78100357be8e8aab8679ddfcb598fabc32780c685b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca2debf87c8a9b389747029d6818072faccee21ceaa197ed99fc278e248700cd
[INFO] running `Command { std: "docker" "start" "-a" "ca2debf87c8a9b389747029d6818072faccee21ceaa197ed99fc278e248700cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_programming_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/ch12.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let contents = run(config).unwrap_or_else(|e| {
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `intensity`
[INFO] [stdout]   --> src/ch13.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn workout(intensity:i32) {
[INFO] [stdout]    |            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ownership` is never used
[INFO] [stdout]   --> src/ch4.rs:78:4
[INFO] [stdout]    |
[INFO] [stdout] 78 | fn get_ownership() -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ownership_back` is never used
[INFO] [stdout]   --> src/ch4.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn get_ownership_back(s:String)-> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_first_word` is never used
[INFO] [stdout]   --> src/ch4.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn get_first_word(s:&String) -> &str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `simple_grep` is never used
[INFO] [stdout]  --> src/ch12.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn simple_grep(args:&[String])  {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ch12.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn run(config: Config) -> Result<String,Box<dyn Error>> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Config` is never constructed
[INFO] [stdout]   --> src/ch12.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Config {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/ch12.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Config {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 28 |     fn new(args: &[String]) -> Result<Config, &'static str> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `workout` is never used
[INFO] [stdout]   --> src/ch13.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn workout(intensity:i32) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cacher` is never constructed
[INFO] [stdout]   --> src/ch13.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Cacher<T>
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/ch13.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | / impl <T> Cacher<T>
[INFO] [stdout] 28 | |     where T : Fn(i32)-> i32
[INFO] [stdout]    | |___________________________- associated items in this implementation
[INFO] [stdout] 29 |   {
[INFO] [stdout] 30 |       fn new(f: T) -> Cacher<T> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |       fn value(&mut self, i:i32) -> i32 {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyBox` is never constructed
[INFO] [stdout]  --> src/ch15.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct MyBox<T> (T);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/ch15.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl <T> MyBox<T> {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] 13 |     fn new(t:T)-> MyBox<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_my_box` is never used
[INFO] [stdout]   --> src/ch15.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn use_my_box() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `fileName` should have a snake case name
[INFO] [stdout]   --> src/ch12.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fileName: String,
[INFO] [stdout]    |     ^^^^^^^^ help: convert the identifier to snake case: `file_name`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fileName` should have a snake case name
[INFO] [stdout]   --> src/ch12.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let fileName = args[1].clone();
[INFO] [stdout]    |             ^^^^^^^^ help: convert the identifier to snake case: `file_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "ca2debf87c8a9b389747029d6818072faccee21ceaa197ed99fc278e248700cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca2debf87c8a9b389747029d6818072faccee21ceaa197ed99fc278e248700cd", kill_on_drop: false }`
[INFO] [stdout] ca2debf87c8a9b389747029d6818072faccee21ceaa197ed99fc278e248700cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 34a93cb3306d1459b2abe23f73f87ffe80ada1d40ca24a85580ccd7930994a42
[INFO] running `Command { std: "docker" "start" "-a" "34a93cb3306d1459b2abe23f73f87ffe80ada1d40ca24a85580ccd7930994a42", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `contents`
[INFO] [stderr]   --> src/ch12.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let contents = run(config).unwrap_or_else(|e| {
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `intensity`
[INFO] [stderr]   --> src/ch13.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn workout(intensity:i32) {
[INFO] [stderr]    |            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_intensity`
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_ownership` is never used
[INFO] [stderr]   --> src/ch4.rs:78:4
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn get_ownership() -> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_ownership_back` is never used
[INFO] [stderr]   --> src/ch4.rs:81:4
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn get_ownership_back(s:String)-> String {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_first_word` is never used
[INFO] [stderr]   --> src/ch4.rs:84:4
[INFO] [stderr]    |
[INFO] [stderr] 84 | fn get_first_word(s:&String) -> &str {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `simple_grep` is never used
[INFO] [stderr]  --> src/ch12.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn simple_grep(args:&[String])  {
[INFO] [stderr]   |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]   --> src/ch12.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn run(config: Config) -> Result<String,Box<dyn Error>> {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Config` is never constructed
[INFO] [stderr]   --> src/ch12.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | struct Config {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/ch12.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | impl Config {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 28 |     fn new(args: &[String]) -> Result<Config, &'static str> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `workout` is never used
[INFO] [stderr]   --> src/ch13.rs:10:4
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn workout(intensity:i32) {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Cacher` is never constructed
[INFO] [stderr]   --> src/ch13.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | struct Cacher<T>
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `value` are never used
[INFO] [stderr]   --> src/ch13.rs:30:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | / impl <T> Cacher<T>
[INFO] [stderr] 28 | |     where T : Fn(i32)-> i32
[INFO] [stderr]    | |___________________________- associated items in this implementation
[INFO] [stderr] 29 |   {
[INFO] [stderr] 30 |       fn new(f: T) -> Cacher<T> {
[INFO] [stderr]    |          ^^^
[INFO] [stderr] ...
[INFO] [stderr] 33 |       fn value(&mut self, i:i32) -> i32 {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MyBox` is never constructed
[INFO] [stderr]  --> src/ch15.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct MyBox<T> (T);
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/ch15.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | impl <T> MyBox<T> {
[INFO] [stderr]    | ----------------- associated function in this implementation
[INFO] [stderr] 13 |     fn new(t:T)-> MyBox<T> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `use_my_box` is never used
[INFO] [stderr]   --> src/ch15.rs:17:4
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn use_my_box() {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `fileName` should have a snake case name
[INFO] [stderr]   --> src/ch12.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fileName: String,
[INFO] [stderr]    |     ^^^^^^^^ help: convert the identifier to snake case: `file_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `fileName` should have a snake case name
[INFO] [stderr]   --> src/ch12.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let fileName = args[1].clone();
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `file_name`
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_programming_practice` (bin "rust_programming_practice" test) generated 17 warnings (run `cargo fix --bin "rust_programming_practice" -p rust_programming_practice --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_programming_practice-152ec69e03544314)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test ch10::test::test_iter ... ok
[INFO] [stdout] test ch10::test::test_point ... ok
[INFO] [stdout] test ch10::test::test_test_10 ... ok
[INFO] [stdout] test ch4::test::test3_5 ... ok
[INFO] [stdout] test ch4::test::test_3_1 ... ok
[INFO] [stdout] test ch5::test::test_struct ... ok
[INFO] [stdout] test restaurant::tests::test_eat ... ok
[INFO] [stdout] test ch8::tests::test_use_string ... ok
[INFO] [stdout] test ch4::test::test3_3 ... ok
[INFO] [stdout] test ch8::tests::test_use_vec ... ok
[INFO] [stdout] test restaurant::tests::it_works ... ok
[INFO] [stdout] test ch4::test::test_3_2 ... FAILED
[INFO] [stdout] test ch16::tests::test_use_thread ... ok
[INFO] [stdout] test ch13::tests::test_calculation_intensity ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- ch4::test::test_3_2 stdout ----
[INFO] [stdout] The value of guess is 42
[INFO] [stdout] 
[INFO] [stdout] thread 'ch4::test::test_3_2' (25) panicked at src/ch4.rs:55:44:
[INFO] [stdout] Index is not a number: ParseIntError { kind: Empty }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55cd5d11be52 - std::backtrace_rs::backtrace::libunwind::trace::h786de35fecf3582f
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x55cd5d11be52 - std::backtrace_rs::backtrace::trace_unsynchronized::h4a7da1a2a64387f1
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x55cd5d11be52 - std::sys::backtrace::_print_fmt::h6bd7d500070c788c
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x55cd5d11be52 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h6d82c1afff976903
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x55cd5d12c4af - core::fmt::rt::Argument::fmt::hc4ce6d643d397690
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x55cd5d12c4af - core::fmt::write::hb1e7ca88b6a3936e
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x55cd5d0e93d3 - std::io::default_write_fmt::haffd49d96f1984a8
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x55cd5d0e93d3 - std::io::Write::write_fmt::h027871c57cf57c01
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x55cd5d0f5452 - std::sys::backtrace::BacktraceLock::print::ha2430613ee79d059
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x55cd5d0fa11f - std::panicking::default_hook::{{closure}}::hdbd2db9e5c303cf6
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x55cd5d0f9fb1 - std::panicking::default_hook::hed93c70cba5fdcf0
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x55cd5d0bc9ee - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd0ee8b569efc6a07
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x55cd5d0bc9ee - test::test_main_with_exit_callback::{{closure}}::hf10864b576ecd15d
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x55cd5d0fa72f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3a55ca34534c0d00
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x55cd5d0fa72f - std::panicking::panic_with_hook::h3862d766c2cec19b
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x55cd5d0fa58a - std::panicking::panic_handler::{{closure}}::hb95eb402b5e28ee1
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x55cd5d0f5589 - std::sys::backtrace::__rust_end_short_backtrace::hf73a26dc1835d85a
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x55cd5d0dd8dd - __rustc[6ed5915ee467787]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x55cd5d133e40 - core::panicking::panic_fmt::h3454303eb8e6f7cd
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x55cd5d133526 - core::result::unwrap_failed::h2380020e6daeb464
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x55cd5d098611 - core::result::Result<T,E>::expect::h3a559fec713dcefc
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/result.rs:1185:23
[INFO] [stdout]   21:     0x55cd5d08dd46 - rust_programming_practice::ch4::run3_2::h798659921a658ec4
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ch4.rs:55:44
[INFO] [stdout]   22:     0x55cd5d08d856 - rust_programming_practice::ch4::test::test_3_2::h6056427086bc2d73
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ch4.rs:13:9
[INFO] [stdout]   23:     0x55cd5d08d877 - rust_programming_practice::ch4::test::test_3_2::{{closure}}::h535d0ca5b03f7b45
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ch4.rs:12:18
[INFO] [stdout]   24:     0x55cd5d091b36 - core::ops::function::FnOnce::call_once::h8b0482f1e7f4b40d
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55cd5d0bc7cb - core::ops::function::FnOnce::call_once::ha729ee35d2fab541
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x55cd5d0bc7cb - test::__rust_begin_short_backtrace::ha40f4db8207e1111
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x55cd5d0d084d - test::run_test_in_process::{{closure}}::hc1b77cda5d44f0f3
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x55cd5d0d084d - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h1dbea1de64785521
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   29:     0x55cd5d0d084d - std::panicking::catch_unwind::do_call::hd5febe9affd5a1b3
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:590:40
[INFO] [stdout]   30:     0x55cd5d0d084d - std::panicking::catch_unwind::h51ea89627559b6f4
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:553:19
[INFO] [stdout]   31:     0x55cd5d0d084d - std::panic::catch_unwind::hb8b8c2367cae3d66
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x55cd5d0d084d - test::run_test_in_process::ha5b55801407ea100
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:686:27
[INFO] [stdout]   33:     0x55cd5d0d084d - test::run_test::{{closure}}::h0b9d4072b527abf5
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x55cd5d0a9d64 - test::run_test::{{closure}}::hb1056b5731205822
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x55cd5d0a9d64 - std::sys::backtrace::__rust_begin_short_backtrace::hb61ff5a34023c7ef
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   36:     0x55cd5d0ad69a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hb0a83c0e8b353cff
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   37:     0x55cd5d0ad69a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb4f32cb008535298
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   38:     0x55cd5d0ad69a - std::panicking::catch_unwind::do_call::h16d110e4fc35789a
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:590:40
[INFO] [stdout]   39:     0x55cd5d0ad69a - std::panicking::catch_unwind::hea9118f355699c4b
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panicking.rs:553:19
[INFO] [stdout]   40:     0x55cd5d0ad69a - std::panic::catch_unwind::hf4b3c2a06d3f42f5
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x55cd5d0ad69a - std::thread::Builder::spawn_unchecked_::{{closure}}::h3f4cb733a52d53d5
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   42:     0x55cd5d0ad69a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4052f0967b37caeb
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x55cd5d0f098f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7ec433abd3f148b4
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   44:     0x55cd5d0f098f - std::sys::thread::unix::Thread::new::thread_start::he514622d3d7ba65c
[INFO] [stdout]                                at /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   45:     0x7ba81ff29aa4 - <unknown>
[INFO] [stdout]   46:     0x7ba81ffb6a64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     ch4::test::test_3_2
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 13 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rust_programming_practice`
[INFO] running `Command { std: "docker" "inspect" "34a93cb3306d1459b2abe23f73f87ffe80ada1d40ca24a85580ccd7930994a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34a93cb3306d1459b2abe23f73f87ffe80ada1d40ca24a85580ccd7930994a42", kill_on_drop: false }`
[INFO] [stdout] 34a93cb3306d1459b2abe23f73f87ffe80ada1d40ca24a85580ccd7930994a42
