[INFO] cloning repository https://github.com/bompandreean/study-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bompandreean/study-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbompandreean%2Fstudy-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbompandreean%2Fstudy-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3bb574d6b6569b3acb215e159e173d24cc1e69a2
[INFO] testing bompandreean/study-rust against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbompandreean%2Fstudy-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bompandreean/study-rust
[INFO] finished tweaking git repo https://github.com/bompandreean/study-rust
[INFO] tweaked toml for git repo https://github.com/bompandreean/study-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bompandreean/study-rust on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bompandreean/study-rust 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f5d3d6abc1154d377cb50e5b4fd741bee580e4a82ee39b35d60f6ef7e211e30
[INFO] running `Command { std: "docker" "start" "-a" "8f5d3d6abc1154d377cb50e5b4fd741bee580e4a82ee39b35d60f6ef7e211e30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f5d3d6abc1154d377cb50e5b4fd741bee580e4a82ee39b35d60f6ef7e211e30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f5d3d6abc1154d377cb50e5b4fd741bee580e4a82ee39b35d60f6ef7e211e30", kill_on_drop: false }`
[INFO] [stdout] 8f5d3d6abc1154d377cb50e5b4fd741bee580e4a82ee39b35d60f6ef7e211e30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 7aec04afc8e187d87552b313c54032f52f0773e2b7fc1a75fe09580a701f1740
[INFO] running `Command { std: "docker" "start" "-a" "7aec04afc8e187d87552b313c54032f52f0773e2b7fc1a75fe09580a701f1740", kill_on_drop: false }`
[INFO] [stderr]    Compiling _01_fundamentals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `control_flow2`, `control_flow`, `introduction`, `operators`, and `variables`
[INFO] [stdout]  --> src/main.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use fundamentals::{introduction, variables, operators, control_flow, control_flow2};
[INFO] [stdout]   |                    ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `project1` and `project2`
[INFO] [stdout]   --> src/main.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | use projects::{project1, project2};
[INFO] [stdout]    |                ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `match_1`, `match_2`, and `match_with_enum`
[INFO] [stdout]   --> src/main.rs:14:26
[INFO] [stdout]    |
[INFO] [stdout] 14 | use fundamentals_match::{match_1, match_2, match_with_enum};
[INFO] [stdout]    |                          ^^^^^^^  ^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fn_with_closure`, `function_ownership`, and `ownership`
[INFO] [stdout]   --> src/main.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 | use memory_management::{ownership, function_ownership, fn_with_closure};
[INFO] [stdout]    |                         ^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error_handling` and `error_propagation`
[INFO] [stdout]   --> src/main.rs:22:22
[INFO] [stdout]    |
[INFO] [stdout] 22 | use error_handling::{error_handling, error_propagation};
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `associated_methods`, `data_structures`, and `traits`
[INFO] [stdout]   --> src/main.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 | use data_structures::{data_structures, associated_methods, traits};
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::collections`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use collections::collections;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `concurrency_basic` and `concurrency_thread_communication`
[INFO] [stdout]   --> src/main.rs:34:19
[INFO] [stdout]    |
[INFO] [stdout] 34 | use concurrency::{concurrency_basic, concurrency_thread_communication};
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `introduction` is never used
[INFO] [stdout]  --> src/fundamentals.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn introduction() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `operators` is never used
[INFO] [stdout]   --> src/fundamentals.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn operators() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `variables` is never used
[INFO] [stdout]   --> src/fundamentals.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn variables() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NavigationAid` is never used
[INFO] [stdout]    --> src/fundamentals.rs:102:6
[INFO] [stdout]     |
[INFO] [stdout] 102 | enum NavigationAid {
[INFO] [stdout]     |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control_flow2` is never used
[INFO] [stdout]    --> src/fundamentals.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub fn control_flow2() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control_flow` is never used
[INFO] [stdout]    --> src/fundamentals.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn control_flow() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `project1` is never used
[INFO] [stdout]  --> src/projects.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn project1() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `project2` is never used
[INFO] [stdout]   --> src/projects.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn project2() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NavigationAid2` is never used
[INFO] [stdout]  --> src/fundamentals_match.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum NavigationAid2 {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_with_enum` is never used
[INFO] [stdout]  --> src/fundamentals_match.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn match_with_enum() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_nav_aid` is never used
[INFO] [stdout]   --> src/fundamentals_match.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn print_nav_aid(navaid: &NavigationAid2) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_2` is never used
[INFO] [stdout]   --> src/fundamentals_match.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn match_2() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_1` is never used
[INFO] [stdout]   --> src/fundamentals_match.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn match_1() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_with_closure` is never used
[INFO] [stdout]  --> src/memory_management.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fn_with_closure() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_ownership` is never used
[INFO] [stdout]   --> src/memory_management.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn function_ownership() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print` is never used
[INFO] [stdout]   --> src/memory_management.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn print(var: &String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_var` is never used
[INFO] [stdout]   --> src/memory_management.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn change_var(var: &mut String) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ownership` is never used
[INFO] [stdout]   --> src/memory_management.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn ownership() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_bigger` is never used
[INFO] [stdout]   --> src/memory_management.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn find_bigger<'a>(p1: &'a i32, p2: &'a i32) -> &'a i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `error_propagation` is never used
[INFO] [stdout]  --> src/error_handling.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn error_propagation() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_from_file` is never used
[INFO] [stdout]   --> src/error_handling.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn read_from_file(filename: &str) -> Result<String, Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `error_handling` is never used
[INFO] [stdout]   --> src/error_handling.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn error_handling() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Feline` is never used
[INFO] [stdout]  --> src/data_structures.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | trait Feline {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Leon` is never constructed
[INFO] [stdout]  --> src/data_structures.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Leon {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traits` is never used
[INFO] [stdout]   --> src/data_structures.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn traits() {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `speak` are never used
[INFO] [stdout]   --> src/data_structures.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Cat {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn new(age: i32, name: String, behaviour: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn speak(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `associated_methods` is never used
[INFO] [stdout]   --> src/data_structures.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn associated_methods() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]   --> src/data_structures.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Cat {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `House` is never constructed
[INFO] [stdout]   --> src/data_structures.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct House {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `data_structures` is never used
[INFO] [stdout]   --> src/data_structures.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn data_structures() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collections` is never used
[INFO] [stdout]  --> src/collections.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn collections() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concurrency_thread_communication` is never used
[INFO] [stdout]  --> src/concurrency.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn concurrency_thread_communication() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ana_chat` is never used
[INFO] [stdout]   --> src/concurrency.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn ana_chat(ion_sender: Sender<&str>, ana_receiver: Receiver<&str>) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ion_chat` is never used
[INFO] [stdout]   --> src/concurrency.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn ion_chat(ana_sender: Sender<&str>, ion_receiver: Receiver<&str>) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concurrency_basic` is never used
[INFO] [stdout]   --> src/concurrency.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn concurrency_basic() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "7aec04afc8e187d87552b313c54032f52f0773e2b7fc1a75fe09580a701f1740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aec04afc8e187d87552b313c54032f52f0773e2b7fc1a75fe09580a701f1740", kill_on_drop: false }`
[INFO] [stdout] 7aec04afc8e187d87552b313c54032f52f0773e2b7fc1a75fe09580a701f1740
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d1f10b1401cac532071fb0dff9b1e6a06c2be92ba2544c9e992c558c0e09b56d
[INFO] running `Command { std: "docker" "start" "-a" "d1f10b1401cac532071fb0dff9b1e6a06c2be92ba2544c9e992c558c0e09b56d", kill_on_drop: false }`
[INFO] [stderr]    Compiling _01_fundamentals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `control_flow2`, `control_flow`, `introduction`, `operators`, and `variables`
[INFO] [stdout]  --> src/main.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use fundamentals::{introduction, variables, operators, control_flow, control_flow2};
[INFO] [stdout]   |                    ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `project1` and `project2`
[INFO] [stdout]   --> src/main.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 | use projects::{project1, project2};
[INFO] [stdout]    |                ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `match_1`, `match_2`, and `match_with_enum`
[INFO] [stdout]   --> src/main.rs:14:26
[INFO] [stdout]    |
[INFO] [stdout] 14 | use fundamentals_match::{match_1, match_2, match_with_enum};
[INFO] [stdout]    |                          ^^^^^^^  ^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fn_with_closure`, `function_ownership`, and `ownership`
[INFO] [stdout]   --> src/main.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 | use memory_management::{ownership, function_ownership, fn_with_closure};
[INFO] [stdout]    |                         ^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error_handling` and `error_propagation`
[INFO] [stdout]   --> src/main.rs:22:22
[INFO] [stdout]    |
[INFO] [stdout] 22 | use error_handling::{error_handling, error_propagation};
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `associated_methods`, `data_structures`, and `traits`
[INFO] [stdout]   --> src/main.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 | use data_structures::{data_structures, associated_methods, traits};
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::collections`
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | use collections::collections;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `concurrency_basic` and `concurrency_thread_communication`
[INFO] [stdout]   --> src/main.rs:34:19
[INFO] [stdout]    |
[INFO] [stdout] 34 | use concurrency::{concurrency_basic, concurrency_thread_communication};
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `introduction` is never used
[INFO] [stdout]  --> src/fundamentals.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn introduction() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `operators` is never used
[INFO] [stdout]   --> src/fundamentals.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn operators() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `variables` is never used
[INFO] [stdout]   --> src/fundamentals.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn variables() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NavigationAid` is never used
[INFO] [stdout]    --> src/fundamentals.rs:102:6
[INFO] [stdout]     |
[INFO] [stdout] 102 | enum NavigationAid {
[INFO] [stdout]     |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control_flow2` is never used
[INFO] [stdout]    --> src/fundamentals.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub fn control_flow2() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `control_flow` is never used
[INFO] [stdout]    --> src/fundamentals.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn control_flow() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `project1` is never used
[INFO] [stdout]  --> src/projects.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn project1() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `project2` is never used
[INFO] [stdout]   --> src/projects.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn project2() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `NavigationAid2` is never used
[INFO] [stdout]  --> src/fundamentals_match.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum NavigationAid2 {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_with_enum` is never used
[INFO] [stdout]  --> src/fundamentals_match.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn match_with_enum() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_nav_aid` is never used
[INFO] [stdout]   --> src/fundamentals_match.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn print_nav_aid(navaid: &NavigationAid2) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_2` is never used
[INFO] [stdout]   --> src/fundamentals_match.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn match_2() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_1` is never used
[INFO] [stdout]   --> src/fundamentals_match.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn match_1() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_with_closure` is never used
[INFO] [stdout]  --> src/memory_management.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fn_with_closure() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function_ownership` is never used
[INFO] [stdout]   --> src/memory_management.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn function_ownership() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print` is never used
[INFO] [stdout]   --> src/memory_management.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn print(var: &String) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_var` is never used
[INFO] [stdout]   --> src/memory_management.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn change_var(var: &mut String) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ownership` is never used
[INFO] [stdout]   --> src/memory_management.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn ownership() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_bigger` is never used
[INFO] [stdout]   --> src/memory_management.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn find_bigger<'a>(p1: &'a i32, p2: &'a i32) -> &'a i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `error_propagation` is never used
[INFO] [stdout]  --> src/error_handling.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn error_propagation() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_from_file` is never used
[INFO] [stdout]   --> src/error_handling.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn read_from_file(filename: &str) -> Result<String, Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `error_handling` is never used
[INFO] [stdout]   --> src/error_handling.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn error_handling() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Feline` is never used
[INFO] [stdout]  --> src/data_structures.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | trait Feline {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Leon` is never constructed
[INFO] [stdout]  --> src/data_structures.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Leon {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traits` is never used
[INFO] [stdout]   --> src/data_structures.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn traits() {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `speak` are never used
[INFO] [stdout]   --> src/data_structures.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl Cat {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn new(age: i32, name: String, behaviour: String) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn speak(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `associated_methods` is never used
[INFO] [stdout]   --> src/data_structures.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn associated_methods() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cat` is never constructed
[INFO] [stdout]   --> src/data_structures.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct Cat {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `House` is never constructed
[INFO] [stdout]   --> src/data_structures.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct House {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `data_structures` is never used
[INFO] [stdout]   --> src/data_structures.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn data_structures() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collections` is never used
[INFO] [stdout]  --> src/collections.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn collections() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concurrency_thread_communication` is never used
[INFO] [stdout]  --> src/concurrency.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn concurrency_thread_communication() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ana_chat` is never used
[INFO] [stdout]   --> src/concurrency.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn ana_chat(ion_sender: Sender<&str>, ana_receiver: Receiver<&str>) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ion_chat` is never used
[INFO] [stdout]   --> src/concurrency.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn ion_chat(ana_sender: Sender<&str>, ion_receiver: Receiver<&str>) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concurrency_basic` is never used
[INFO] [stdout]   --> src/concurrency.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn concurrency_basic() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "d1f10b1401cac532071fb0dff9b1e6a06c2be92ba2544c9e992c558c0e09b56d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1f10b1401cac532071fb0dff9b1e6a06c2be92ba2544c9e992c558c0e09b56d", kill_on_drop: false }`
[INFO] [stdout] d1f10b1401cac532071fb0dff9b1e6a06c2be92ba2544c9e992c558c0e09b56d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d11895ce967bfca35b5af6b73b18965d2c5e0cec6d5fbb1adcffb53cc275759b
[INFO] running `Command { std: "docker" "start" "-a" "d11895ce967bfca35b5af6b73b18965d2c5e0cec6d5fbb1adcffb53cc275759b", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `control_flow2`, `control_flow`, `introduction`, `operators`, and `variables`
[INFO] [stderr]  --> src/main.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | use fundamentals::{introduction, variables, operators, control_flow, control_flow2};
[INFO] [stderr]   |                    ^^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `project1` and `project2`
[INFO] [stderr]   --> src/main.rs:10:16
[INFO] [stderr]    |
[INFO] [stderr] 10 | use projects::{project1, project2};
[INFO] [stderr]    |                ^^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `match_1`, `match_2`, and `match_with_enum`
[INFO] [stderr]   --> src/main.rs:14:26
[INFO] [stderr]    |
[INFO] [stderr] 14 | use fundamentals_match::{match_1, match_2, match_with_enum};
[INFO] [stderr]    |                          ^^^^^^^  ^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `fn_with_closure`, `function_ownership`, and `ownership`
[INFO] [stderr]   --> src/main.rs:18:25
[INFO] [stderr]    |
[INFO] [stderr] 18 | use memory_management::{ownership, function_ownership, fn_with_closure};
[INFO] [stderr]    |                         ^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `error_handling` and `error_propagation`
[INFO] [stderr]   --> src/main.rs:22:22
[INFO] [stderr]    |
[INFO] [stderr] 22 | use error_handling::{error_handling, error_propagation};
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `associated_methods`, `data_structures`, and `traits`
[INFO] [stderr]   --> src/main.rs:26:23
[INFO] [stderr]    |
[INFO] [stderr] 26 | use data_structures::{data_structures, associated_methods, traits};
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `collections::collections`
[INFO] [stderr]   --> src/main.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 | use collections::collections;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `concurrency_basic` and `concurrency_thread_communication`
[INFO] [stderr]   --> src/main.rs:34:19
[INFO] [stderr]    |
[INFO] [stderr] 34 | use concurrency::{concurrency_basic, concurrency_thread_communication};
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `introduction` is never used
[INFO] [stderr]  --> src/fundamentals.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn introduction() {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `operators` is never used
[INFO] [stderr]   --> src/fundamentals.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn operators() {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `variables` is never used
[INFO] [stderr]   --> src/fundamentals.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub fn variables() {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `NavigationAid` is never used
[INFO] [stderr]    --> src/fundamentals.rs:102:6
[INFO] [stderr]     |
[INFO] [stderr] 102 | enum NavigationAid {
[INFO] [stderr]     |      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `control_flow2` is never used
[INFO] [stderr]    --> src/fundamentals.rs:109:8
[INFO] [stderr]     |
[INFO] [stderr] 109 | pub fn control_flow2() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `control_flow` is never used
[INFO] [stderr]    --> src/fundamentals.rs:116:8
[INFO] [stderr]     |
[INFO] [stderr] 116 | pub fn control_flow() {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `project1` is never used
[INFO] [stderr]  --> src/projects.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn project1() {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `project2` is never used
[INFO] [stderr]   --> src/projects.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn project2() {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `NavigationAid2` is never used
[INFO] [stderr]  --> src/fundamentals_match.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum NavigationAid2 {
[INFO] [stderr]   |      ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `match_with_enum` is never used
[INFO] [stderr]  --> src/fundamentals_match.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn match_with_enum() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `print_nav_aid` is never used
[INFO] [stderr]   --> src/fundamentals_match.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn print_nav_aid(navaid: &NavigationAid2) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `match_2` is never used
[INFO] [stderr]   --> src/fundamentals_match.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn match_2() {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `match_1` is never used
[INFO] [stderr]   --> src/fundamentals_match.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 57 | pub fn match_1() {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `fn_with_closure` is never used
[INFO] [stderr]  --> src/memory_management.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn fn_with_closure() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `function_ownership` is never used
[INFO] [stderr]   --> src/memory_management.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn function_ownership() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `print` is never used
[INFO] [stderr]   --> src/memory_management.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn print(var: &String) {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `change_var` is never used
[INFO] [stderr]   --> src/memory_management.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn change_var(var: &mut String) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ownership` is never used
[INFO] [stderr]   --> src/memory_management.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn ownership() {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `find_bigger` is never used
[INFO] [stderr]   --> src/memory_management.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn find_bigger<'a>(p1: &'a i32, p2: &'a i32) -> &'a i32 {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `error_propagation` is never used
[INFO] [stderr]  --> src/error_handling.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn error_propagation() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_from_file` is never used
[INFO] [stderr]   --> src/error_handling.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn read_from_file(filename: &str) -> Result<String, Error> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `error_handling` is never used
[INFO] [stderr]   --> src/error_handling.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn error_handling() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Feline` is never used
[INFO] [stderr]  --> src/data_structures.rs:2:7
[INFO] [stderr]   |
[INFO] [stderr] 2 | trait Feline {
[INFO] [stderr]   |       ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Leon` is never constructed
[INFO] [stderr]  --> src/data_structures.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Leon {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `traits` is never used
[INFO] [stderr]   --> src/data_structures.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn traits() {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `speak` are never used
[INFO] [stderr]   --> src/data_structures.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 34 | impl Cat {
[INFO] [stderr]    | -------- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 37 |     fn new(age: i32, name: String, behaviour: String) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 45 |     fn speak(&self) {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `associated_methods` is never used
[INFO] [stderr]   --> src/data_structures.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 | pub fn associated_methods() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Cat` is never constructed
[INFO] [stderr]   --> src/data_structures.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | struct Cat {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `House` is never constructed
[INFO] [stderr]   --> src/data_structures.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 | struct House {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `data_structures` is never used
[INFO] [stderr]   --> src/data_structures.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn data_structures() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `collections` is never used
[INFO] [stderr]  --> src/collections.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn collections() {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `concurrency_thread_communication` is never used
[INFO] [stderr]  --> src/concurrency.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn concurrency_thread_communication() {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ana_chat` is never used
[INFO] [stderr]   --> src/concurrency.rs:29:4
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn ana_chat(ion_sender: Sender<&str>, ana_receiver: Receiver<&str>) {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `ion_chat` is never used
[INFO] [stderr]   --> src/concurrency.rs:36:4
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn ion_chat(ana_sender: Sender<&str>, ion_receiver: Receiver<&str>) {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `concurrency_basic` is never used
[INFO] [stderr]   --> src/concurrency.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn concurrency_basic() {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `_01_fundamentals` (bin "_01_fundamentals" test) generated 43 warnings (run `cargo fix --bin "_01_fundamentals" --tests` to apply 8 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/_01_fundamentals-edcc77c0ccd230a7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d11895ce967bfca35b5af6b73b18965d2c5e0cec6d5fbb1adcffb53cc275759b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d11895ce967bfca35b5af6b73b18965d2c5e0cec6d5fbb1adcffb53cc275759b", kill_on_drop: false }`
[INFO] [stdout] d11895ce967bfca35b5af6b73b18965d2c5e0cec6d5fbb1adcffb53cc275759b