[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#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmessi18%2Frust-programming-" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-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-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/messi18/rust-programming- on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9740218dcc975e54a1e63bc048627bc1439822ebde89dfc4e436d8de0d5de1cc
[INFO] running `Command { std: "docker" "start" "-a" "9740218dcc975e54a1e63bc048627bc1439822ebde89dfc4e436d8de0d5de1cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9740218dcc975e54a1e63bc048627bc1439822ebde89dfc4e436d8de0d5de1cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9740218dcc975e54a1e63bc048627bc1439822ebde89dfc4e436d8de0d5de1cc", kill_on_drop: false }`
[INFO] [stdout] 9740218dcc975e54a1e63bc048627bc1439822ebde89dfc4e436d8de0d5de1cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b3f5c3fa7043e2ae6fb38def5af51a3452ac22029350ce5f6304e7b800d988f
[INFO] running `Command { std: "docker" "start" "-a" "4b3f5c3fa7043e2ae6fb38def5af51a3452ac22029350ce5f6304e7b800d988f", 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)]` 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)]` 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)]` 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: 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)]` 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 0.56s
[INFO] running `Command { std: "docker" "inspect" "4b3f5c3fa7043e2ae6fb38def5af51a3452ac22029350ce5f6304e7b800d988f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b3f5c3fa7043e2ae6fb38def5af51a3452ac22029350ce5f6304e7b800d988f", kill_on_drop: false }`
[INFO] [stdout] 4b3f5c3fa7043e2ae6fb38def5af51a3452ac22029350ce5f6304e7b800d988f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3630e22f5310364cb8dc5697fa501905bc8256dfb98e7aef8d3980d0ecf7d360
[INFO] running `Command { std: "docker" "start" "-a" "3630e22f5310364cb8dc5697fa501905bc8256dfb98e7aef8d3980d0ecf7d360", 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)]` 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)]` 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)]` 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 1.99s
[INFO] running `Command { std: "docker" "inspect" "3630e22f5310364cb8dc5697fa501905bc8256dfb98e7aef8d3980d0ecf7d360", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3630e22f5310364cb8dc5697fa501905bc8256dfb98e7aef8d3980d0ecf7d360", kill_on_drop: false }`
[INFO] [stdout] 3630e22f5310364cb8dc5697fa501905bc8256dfb98e7aef8d3980d0ecf7d360
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dc8ff5e5be6ce3d88af8e645a7287971c255e34fdd1a84fde3e466f049a9e3dc
[INFO] running `Command { std: "docker" "start" "-a" "dc8ff5e5be6ce3d88af8e645a7287971c255e34fdd1a84fde3e466f049a9e3dc", 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)]` 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)]` 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)]` 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
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_programming_practice-0bb228df6a8c91fb)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test ch10::test::test_point ... ok
[INFO] [stdout] test ch10::test::test_iter ... ok
[INFO] [stdout] test ch4::test::test_3_1 ... ok
[INFO] [stdout] test restaurant::tests::it_works ... ok
[INFO] [stdout] test ch4::test::test3_3 ... ok
[INFO] [stdout] test ch5::test::test_struct ... ok
[INFO] [stdout] test ch4::test::test3_5 ... ok
[INFO] [stdout] test ch8::tests::test_use_vec ... ok
[INFO] [stdout] test restaurant::tests::test_eat ... ok
[INFO] [stdout] test ch10::test::test_test_10 ... ok
[INFO] [stdout] test ch8::tests::test_use_string ... 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' panicked at src/ch4.rs:55:44:
[INFO] [stdout] Index is not a number: ParseIntError { kind: Empty }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x622666bfd3c2 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x622666bfd3c2 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x622666bfd3c2 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x622666bfd3c2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha499add612cccf8e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x622666c22b53 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x622666c22b53 - core::fmt::write::hb10c956f5235c8a4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x622666bfa0b3 - std::io::default_write_fmt::hdb7615052be2ba4d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x622666bfa0b3 - std::io::Write::write_fmt::he1bcd251ec6e4153
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x622666bfd212 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x622666bfe92c - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x622666bfe782 - std::panicking::default_hook::h7c46b44874fe5c9a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x622666bc5fd4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h178a5fcedee41e2f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x622666bc5fd4 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x622666bff30b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h13602080f5b63276
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x622666bff30b - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x622666bff0da - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x622666bfd8b9 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x622666bfed6d - __rustc[18fb429eef004894]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x622666c21020 - core::panicking::panic_fmt::hd890aeb12c3a3fc3
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x622666c21396 - core::result::unwrap_failed::h31c9775ec1a50121
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1761:5
[INFO] [stdout]   20:     0x622666b8699a - core::result::Result<T,E>::expect::hf709b532f1c9ccbc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/result.rs:1119:23
[INFO] [stdout]   21:     0x622666b8699a - rust_programming_practice::ch4::run3_2::hdaa41d6cedd9cbbb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ch4.rs:55:44
[INFO] [stdout]   22:     0x622666b8be49 - rust_programming_practice::ch4::test::test_3_2::h70b131489525ee22
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ch4.rs:13:9
[INFO] [stdout]   23:     0x622666b8be49 - rust_programming_practice::ch4::test::test_3_2::{{closure}}::h083ade9418b2e75e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ch4.rs:12:18
[INFO] [stdout]   24:     0x622666b8be49 - core::ops::function::FnOnce::call_once::h39f6be5616d3dd7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x622666bcb75b - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x622666bcb75b - test::__rust_begin_short_backtrace::h7dd7142bd62fa711
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18
[INFO] [stdout]   27:     0x622666bca94e - test::run_test_in_process::{{closure}}::h43a753f038d36b3f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74
[INFO] [stdout]   28:     0x622666bca94e - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   29:     0x622666bca94e - std::panicking::catch_unwind::do_call::he308587d70ac34ba
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   30:     0x622666bca94e - std::panicking::catch_unwind::h30dcba31973e8fb0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   31:     0x622666bca94e - std::panic::catch_unwind::hfb68364e5621fbee
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x622666bca94e - test::run_test_in_process::hcdcc2977903b998a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27
[INFO] [stdout]   33:     0x622666bca94e - test::run_test::{{closure}}::h544a6550958c5d14
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43
[INFO] [stdout]   34:     0x622666b8e4c4 - test::run_test::{{closure}}::hb172e48ebe2b92c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41
[INFO] [stdout]   35:     0x622666b8e4c4 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   36:     0x622666b91e9a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   37:     0x622666b91e9a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   38:     0x622666b91e9a - std::panicking::catch_unwind::do_call::h052f373fb905fee0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   39:     0x622666b91e9a - std::panicking::catch_unwind::hb425d20c8ffb09c8
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   40:     0x622666b91e9a - std::panic::catch_unwind::ha0d5dfbf18fdeda5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x622666b91e9a - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   42:     0x622666b91e9a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x622666c02267 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h47377e27fb938a26
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   44:     0x622666c02267 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h72f1fe5d095abf57
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   45:     0x622666c02267 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   46:     0x7de7ab47caa4 - <unknown>
[INFO] [stdout]   47:     0x7de7ab509a34 - clone
[INFO] [stdout]   48:                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 2.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rust_programming_practice`
[INFO] running `Command { std: "docker" "inspect" "dc8ff5e5be6ce3d88af8e645a7287971c255e34fdd1a84fde3e466f049a9e3dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc8ff5e5be6ce3d88af8e645a7287971c255e34fdd1a84fde3e466f049a9e3dc", kill_on_drop: false }`
[INFO] [stdout] dc8ff5e5be6ce3d88af8e645a7287971c255e34fdd1a84fde3e466f049a9e3dc
