[INFO] cloning repository https://github.com/BlockheaderWeb3-Community/rust-workshop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BlockheaderWeb3-Community/rust-workshop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlockheaderWeb3-Community%2Frust-workshop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlockheaderWeb3-Community%2Frust-workshop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 212562285d75f9d7a5a87918453383b8a4fea3c3
[INFO] checking BlockheaderWeb3-Community/rust-workshop against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBlockheaderWeb3-Community%2Frust-workshop" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BlockheaderWeb3-Community/rust-workshop on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BlockheaderWeb3-Community/rust-workshop
[INFO] finished tweaking git repo https://github.com/BlockheaderWeb3-Community/rust-workshop
[INFO] tweaked toml for git repo https://github.com/BlockheaderWeb3-Community/rust-workshop written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/BlockheaderWeb3-Community/rust-workshop 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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a14c326ce49c8106253405856905079f3cf1908ab99d84850e8bec7e11481809
[INFO] running `Command { std: "docker" "start" "-a" "a14c326ce49c8106253405856905079f3cf1908ab99d84850e8bec7e11481809", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a14c326ce49c8106253405856905079f3cf1908ab99d84850e8bec7e11481809", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a14c326ce49c8106253405856905079f3cf1908ab99d84850e8bec7e11481809", kill_on_drop: false }`
[INFO] [stdout] a14c326ce49c8106253405856905079f3cf1908ab99d84850e8bec7e11481809
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77de2ede0b65369b404ebf11e85194df421272abfcdc0216a4febda8f291097c
[INFO] running `Command { std: "docker" "start" "-a" "77de2ede0b65369b404ebf11e85194df421272abfcdc0216a4febda8f291097c", kill_on_drop: false }`
[INFO] [stderr]     Checking solving_practice_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::panic`
[INFO] [stdout]   --> src/functions/ex_3.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     use std::panic;
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]  --> src/functions/ex_3.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     never_return();
[INFO] [stdout]   |     -------------- any code following this expression is unreachable
[INFO] [stdout] 8 |
[INFO] [stdout] 9 |     println!("Failed!");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]   = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]  --> src/functions/ex_3.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     never_return();
[INFO] [stdout]   |     -------------- any code following this expression is unreachable
[INFO] [stdout] 8 |
[INFO] [stdout] 9 |     println!("Failed!");
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]   = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_5.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let v = (2, 3);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/compound_types/ex_1.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let s: &str = "hello, world"; // we can only use str type on it own as a borrowed type.
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_5.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let v = (2, 3);
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/compound_types/ex_1.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let s: &str = "hello, world"; // we can only use str type on it own as a borrowed type.
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/compound_types/ex_8.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let s1: &str = s.as_str();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/exercises/ex_1.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let y: i32; // Uninitialized but also unused, only a Warning !
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `x` is assigned to, but never used
[INFO] [stdout]   --> src/exercises/ex_4.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut x: i32 = 1;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_x` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/exercises/ex_4.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     x += 3;
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/exercises/ex_4.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let y = 4;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/exercises/ex_4.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let y = "I can also be bound to text!";
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/compound_types/ex_8.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let s1: &str = s.as_str();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/integers/ex_1.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut y: u32 = 5;
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/integers/ex_1.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let y = x;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]  --> src/integers/ex_1.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let z = 10; // Type of z ?
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/exercises/ex_1.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let y: i32; // Uninitialized but also unused, only a Warning !
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/integers/ex_1.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut y: u32 = 5;
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `x` is assigned to, but never used
[INFO] [stdout]   --> src/exercises/ex_4.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut x: i32 = 1;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_x` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/exercises/ex_4.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     x += 3;
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/exercises/ex_4.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let y = 4;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/exercises/ex_4.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let y = "I can also be bound to text!";
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/integers/ex_1.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut y: u32 = 5;
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/ownership/ex_5.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let x = (1, 2, (), &"hello".to_string()); // To be able to copy this type, make all it's individual value copyable by the compiler
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> src/integers/ex_1.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let y = x;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]  --> src/integers/ex_1.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let z = 10; // Type of z ?
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/integers/ex_1.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut y: u32 = 5;
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_3.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_8.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn borrow_object(s: &mut String) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_9.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/ownership/ex_5.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let x = (1, 2, (), &"hello".to_string()); // To be able to copy this type, make all it's individual value copyable by the compiler
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_3.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_8.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn borrow_object(s: &mut String) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_9.rs:13:18
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex_1` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_1.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn ex_1() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex_2` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_2.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ex_2() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_char` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_2.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn print_char(c: char) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex_3` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_3.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ex_3() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_4.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_5.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `implicitly_ret_unit` is never used
[INFO] [stdout]   --> src/chars_bool_and_unit/ex_5.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn implicitly_ret_unit() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `explicitly_ret_unit` is never used
[INFO] [stdout]   --> src/chars_bool_and_unit/ex_5.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn explicitly_ret_unit() -> () {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_6.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_1.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_10.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_11.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_12.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_2.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greetings` is never used
[INFO] [stdout]   --> src/compound_types/ex_2.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn greetings(s: &str) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_3.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_4.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_5.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_6.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_7.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greetings` is never used
[INFO] [stdout]   --> src/compound_types/ex_7.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn greetings(s: String) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_8.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_9.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unused_var` is never used
[INFO] [stdout]  --> src/exercises/ex_1.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn unused_var() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mutate_variable` is never used
[INFO] [stdout]  --> src/exercises/ex_2.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn mutate_variable() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scope_fn` is never used
[INFO] [stdout]  --> src/exercises/ex_3.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn scope_fn() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_define_x` is never used
[INFO] [stdout]   --> src/exercises/ex_3.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn call_define_x() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `define_x` is never used
[INFO] [stdout]   --> src/exercises/ex_3.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn define_x() -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadow_fn` is never used
[INFO] [stdout]  --> src/exercises/ex_4.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn shadow_fn() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadow_fn_b` is never used
[INFO] [stdout]   --> src/exercises/ex_4.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn shadow_fn_b() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unused_var` is never used
[INFO] [stdout]   --> src/exercises/ex_5.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn unused_var() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `destructure` is never used
[INFO] [stdout]  --> src/exercises/ex_6.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn destructure() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `destructure_assignment` is never used
[INFO] [stdout]  --> src/exercises/ex_7.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn destructure_assignment() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/functions/ex_1.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]   --> src/functions/ex_1.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn sum(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/functions/ex_2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print` is never used
[INFO] [stdout]  --> src/functions/ex_2.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn print() -> () {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/functions/ex_3.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `never_return` is never used
[INFO] [stdout]   --> src/functions/ex_3.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn never_return() -> ! {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]   --> src/functions/ex_3.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn sum(x: u8, y: u8) -> u8 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/functions/ex_4.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_1` is never used
[INFO] [stdout]  --> src/integers/ex_1.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_1() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_2` is never used
[INFO] [stdout]  --> src/integers/ex_2.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_2() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_3` is never used
[INFO] [stdout]  --> src/integers/ex_3.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_3() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `type_of` is never used
[INFO] [stdout]  --> src/integers/ex_3.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn type_of<T>(_: &T) -> String {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_4` is never used
[INFO] [stdout]  --> src/integers/ex_4.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_4() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_5` is never used
[INFO] [stdout]  --> src/integers/ex_5.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_5() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_6` is never used
[INFO] [stdout]  --> src/integers/ex_6.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_6() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_1.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_2.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_ownership` is never used
[INFO] [stdout]   --> src/ownership/ex_2.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn take_ownership(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_3.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `give_ownership` is never used
[INFO] [stdout]  --> src/ownership/ex_3.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn give_ownership() -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_4.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_str` is never used
[INFO] [stdout]   --> src/ownership/ex_4.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn print_str(s: String) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_5.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_6.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_7.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_8.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_9.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_1.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_10.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_11.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_3.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_object` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_3.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_4.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `push_str` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_4.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn push_str(s: &mut String) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_5.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_6.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_addr` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_6.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn get_addr(r: &char) -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_7.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_8.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_object` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_8.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn borrow_object(s: &mut String) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_9.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_object` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_9.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/statements_and_expressions/ex_1.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex_1` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_1.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn ex_1() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex_2` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_2.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ex_2() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_char` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_2.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn print_char(c: char) {
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ex_3` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_3.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn ex_3() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_4.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_5.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `implicitly_ret_unit` is never used
[INFO] [stdout]   --> src/chars_bool_and_unit/ex_5.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn implicitly_ret_unit() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `explicitly_ret_unit` is never used
[INFO] [stdout]   --> src/chars_bool_and_unit/ex_5.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn explicitly_ret_unit() -> () {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chars_bool_and_unit/ex_6.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_1.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_10.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_11.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_12.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_2.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greetings` is never used
[INFO] [stdout]   --> src/compound_types/ex_2.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn greetings(s: &str) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_3.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_4.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_5.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_6.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_7.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greetings` is never used
[INFO] [stdout]   --> src/compound_types/ex_7.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn greetings(s: String) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_8.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/compound_types/ex_9.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unused_var` is never used
[INFO] [stdout]  --> src/exercises/ex_1.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn unused_var() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mutate_variable` is never used
[INFO] [stdout]  --> src/exercises/ex_2.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn mutate_variable() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scope_fn` is never used
[INFO] [stdout]  --> src/exercises/ex_3.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn scope_fn() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_define_x` is never used
[INFO] [stdout]   --> src/exercises/ex_3.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn call_define_x() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `define_x` is never used
[INFO] [stdout]   --> src/exercises/ex_3.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn define_x() -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadow_fn` is never used
[INFO] [stdout]  --> src/exercises/ex_4.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn shadow_fn() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadow_fn_b` is never used
[INFO] [stdout]   --> src/exercises/ex_4.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn shadow_fn_b() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unused_var` is never used
[INFO] [stdout]   --> src/exercises/ex_5.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn unused_var() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `destructure` is never used
[INFO] [stdout]  --> src/exercises/ex_6.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn destructure() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `destructure_assignment` is never used
[INFO] [stdout]  --> src/exercises/ex_7.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn destructure_assignment() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/functions/ex_1.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]   --> src/functions/ex_1.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn sum(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/functions/ex_2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print` is never used
[INFO] [stdout]  --> src/functions/ex_2.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn print() -> () {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/functions/ex_3.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `never_return` is never used
[INFO] [stdout]   --> src/functions/ex_3.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn never_return() -> ! {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/functions/ex_4.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_1` is never used
[INFO] [stdout]  --> src/integers/ex_1.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_1() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_2` is never used
[INFO] [stdout]  --> src/integers/ex_2.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_2() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_3` is never used
[INFO] [stdout]  --> src/integers/ex_3.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_3() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `type_of` is never used
[INFO] [stdout]  --> src/integers/ex_3.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn type_of<T>(_: &T) -> String {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_4` is never used
[INFO] [stdout]  --> src/integers/ex_4.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_4() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_5` is never used
[INFO] [stdout]  --> src/integers/ex_5.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_5() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `int_ex_6` is never used
[INFO] [stdout]  --> src/integers/ex_6.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn int_ex_6() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_1.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_2.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `take_ownership` is never used
[INFO] [stdout]   --> src/ownership/ex_2.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn take_ownership(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_3.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `give_ownership` is never used
[INFO] [stdout]  --> src/ownership/ex_3.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn give_ownership() -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_4.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_str` is never used
[INFO] [stdout]   --> src/ownership/ex_4.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn print_str(s: String) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_5.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_6.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_7.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_8.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/ownership/ex_9.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_1.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_10.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_11.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_3.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_object` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_3.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_4.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `push_str` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_4.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn push_str(s: &mut String) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_5.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_6.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_addr` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_6.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn get_addr(r: &char) -> String {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_7.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_8.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_object` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_8.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn borrow_object(s: &mut String) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/referencing_and_borrowing/ex_9.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_object` is never used
[INFO] [stdout]   --> src/referencing_and_borrowing/ex_9.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn borrow_object(s: &String) {}
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/statements_and_expressions/ex_1.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "77de2ede0b65369b404ebf11e85194df421272abfcdc0216a4febda8f291097c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77de2ede0b65369b404ebf11e85194df421272abfcdc0216a4febda8f291097c", kill_on_drop: false }`
[INFO] [stdout] 77de2ede0b65369b404ebf11e85194df421272abfcdc0216a4febda8f291097c
