[INFO] cloning repository https://github.com/nirvik00/rust_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nirvik00/rust_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnirvik00%2Frust_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnirvik00%2Frust_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 965e23d913038a9dc96041cb929da0cb9fcf8459
[INFO] checking nirvik00/rust_exercises against try#c4ca24658d934444a28db36abebef17a8651701a for pr-144156
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnirvik00%2Frust_exercises" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nirvik00/rust_exercises
[INFO] finished tweaking git repo https://github.com/nirvik00/rust_exercises
[INFO] tweaked toml for git repo https://github.com/nirvik00/rust_exercises written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nirvik00/rust_exercises on toolchain c4ca24658d934444a28db36abebef17a8651701a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nirvik00/rust_exercises 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" "+c4ca24658d934444a28db36abebef17a8651701a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a72851d85f9983a4d2754610c3ea03b93bfa51cd4a109a5c7f32085329da3dca
[INFO] running `Command { std: "docker" "start" "-a" "a72851d85f9983a4d2754610c3ea03b93bfa51cd4a109a5c7f32085329da3dca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a72851d85f9983a4d2754610c3ea03b93bfa51cd4a109a5c7f32085329da3dca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a72851d85f9983a4d2754610c3ea03b93bfa51cd4a109a5c7f32085329da3dca", kill_on_drop: false }`
[INFO] [stdout] a72851d85f9983a4d2754610c3ea03b93bfa51cd4a109a5c7f32085329da3dca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e4a72db5be6beb2d6ba19a7f72f807913054d1c2a30b093f0067fcd4d9c0b92
[INFO] running `Command { std: "docker" "start" "-a" "5e4a72db5be6beb2d6ba19a7f72f807913054d1c2a30b093f0067fcd4d9c0b92", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling serde_json v1.0.120
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.71
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]    Compiling serde_derive v1.0.204
[INFO] [stderr]     Checking p001 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `json::parse`
[INFO] [stdout]  --> src/ex1/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use json::parse;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result` and `Value`
[INFO] [stdout]  --> src/ex1/parse_json.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json::{Result, Value};
[INFO] [stdout]   |                  ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_string`
[INFO] [stdout]  --> src/ex1/parse_json.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde_json::{from_str, to_string};
[INFO] [stdout]   |                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `collections::HashMap`, `env`, and `string`
[INFO] [stdout]  --> src/ex1/parse_json.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{collections::HashMap, env, string};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^  ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Result`
[INFO] [stdout]  --> src/ex1/func_json2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Map` and `Value`
[INFO] [stdout]  --> src/ex1/func_json2.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_json::{Map, Value};
[INFO] [stdout]   |                  ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std`
[INFO] [stdout]  --> src/ex1/maths.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std;
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `pt2d` should have an upper camel case name
[INFO] [stdout]   --> src/ex1/structs2.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     struct pt2d(i32, i32);
[INFO] [stdout]    |            ^^^^ help: convert the identifier to upper camel case: `Pt2d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `pt3d` should have an upper camel case name
[INFO] [stdout]   --> src/ex1/structs2.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     struct pt3d(i32, i32, i32);
[INFO] [stdout]    |            ^^^^ help: convert the identifier to upper camel case: `Pt3d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result` and `Value`
[INFO] [stdout]  --> src/ex1/asset_json_parser.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json::{Result, Value};
[INFO] [stdout]   |                  ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_string`
[INFO] [stdout]  --> src/ex1/asset_json_parser.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde_json::{from_str, to_string};
[INFO] [stdout]   |                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `collections::HashMap`, `env`, and `string`
[INFO] [stdout]  --> src/ex1/asset_json_parser.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{collections::HashMap, env, string};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^  ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v4` should have an upper camel case name
[INFO] [stdout]  --> src/ex2/enum2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     v4, 
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `V4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v6` should have an upper camel case name
[INFO] [stdout]  --> src/ex2/enum2.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     v6,
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `V6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `json::parse`
[INFO] [stdout]  --> src/ex1/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use json::parse;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result` and `Value`
[INFO] [stdout]  --> src/ex1/parse_json.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json::{Result, Value};
[INFO] [stdout]   |                  ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_string`
[INFO] [stdout]  --> src/ex1/parse_json.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde_json::{from_str, to_string};
[INFO] [stdout]   |                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `collections::HashMap`, `env`, and `string`
[INFO] [stdout]  --> src/ex1/parse_json.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{collections::HashMap, env, string};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^  ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::Result`
[INFO] [stdout]  --> src/ex1/func_json2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Map` and `Value`
[INFO] [stdout]  --> src/ex1/func_json2.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_json::{Map, Value};
[INFO] [stdout]   |                  ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std`
[INFO] [stdout]  --> src/ex1/maths.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std;
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `pt2d` should have an upper camel case name
[INFO] [stdout]   --> src/ex1/structs2.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     struct pt2d(i32, i32);
[INFO] [stdout]    |            ^^^^ help: convert the identifier to upper camel case: `Pt2d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `pt3d` should have an upper camel case name
[INFO] [stdout]   --> src/ex1/structs2.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     struct pt3d(i32, i32, i32);
[INFO] [stdout]    |            ^^^^ help: convert the identifier to upper camel case: `Pt3d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result` and `Value`
[INFO] [stdout]  --> src/ex1/asset_json_parser.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json::{Result, Value};
[INFO] [stdout]   |                  ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `to_string`
[INFO] [stdout]  --> src/ex1/asset_json_parser.rs:6:28
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde_json::{from_str, to_string};
[INFO] [stdout]   |                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `collections::HashMap`, `env`, and `string`
[INFO] [stdout]  --> src/ex1/asset_json_parser.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{collections::HashMap, env, string};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^  ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v4` should have an upper camel case name
[INFO] [stdout]  --> src/ex2/enum2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     v4, 
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `V4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `v6` should have an upper camel case name
[INFO] [stdout]  --> src/ex2/enum2.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     v6,
[INFO] [stdout]   |     ^^ help: convert the identifier to upper camel case (notice the capitalization): `V6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/ex3/ui.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/ex1/enums2.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |             Value::Integer(num) => println!("int {:?}", i),
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/ex1/enums2.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Value::Float(num) => println!("float {:?}", i),
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grade2` is never read
[INFO] [stdout]   --> src/ex1/conditionals.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let mut grade2: char = 'N';
[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 import: `std::io`
[INFO] [stdout]  --> src/ex3/ui.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/ex1/enums2.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |             Value::Integer(num) => println!("int {:?}", i),
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num`
[INFO] [stdout]   --> src/ex1/enums2.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 51 |             Value::Float(num) => println!("float {:?}", i),
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grade2` is never read
[INFO] [stdout]   --> src/ex1/conditionals.rs:33:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let mut grade2: char = 'N';
[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: value assigned to `y` is never read
[INFO] [stdout]   --> src/ex1/ownership.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut y = x;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/ex1/ownership.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut y = x;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/ex1/structs2.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let b = my_car.owner.clone();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `car2`
[INFO] [stdout]   --> src/ex1/structs2.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let car2 = Car {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_car2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/ex1/structs2.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let p1 = (1, 3);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/ex1/structs2.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let p2 = (4, 10, 12);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p01`
[INFO] [stdout]   --> src/ex1/structs2.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let p01 = pt2d(1, 2);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_p01`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p02`
[INFO] [stdout]   --> src/ex1/structs2.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let p02 = pt3d(1, 2, 4);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_p02`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/ex1/hashmaps.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         Some(v) => {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/ex1/structs2.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let b = my_car.owner.clone();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/ex1/hashmap_ex.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         Err(e) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `car2`
[INFO] [stdout]   --> src/ex1/structs2.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let car2 = Car {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_car2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p1`
[INFO] [stdout]   --> src/ex1/structs2.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let p1 = (1, 3);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p2`
[INFO] [stdout]   --> src/ex1/structs2.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let p2 = (4, 10, 12);
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_p2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p01`
[INFO] [stdout]   --> src/ex1/structs2.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let p01 = pt2d(1, 2);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_p01`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p02`
[INFO] [stdout]   --> src/ex1/structs2.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let p02 = pt3d(1, 2, 4);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_p02`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/ex1/hashmaps.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         Some(v) => {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/ex1/hashmap_ex.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         Err(e) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]  --> src/ex2/ref_borrow_slices.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut y=&x;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `WeekDay` is never used
[INFO] [stdout]  --> src/ex1/enums2.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum WeekDay{
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]  --> src/ex2/ref_borrow_slices.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut y=&x;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TravelType` is never used
[INFO] [stdout]   --> src/ex1/enums2.rs:15:6
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum TravelType{
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `travel_allowance` is never used
[INFO] [stdout]   --> src/ex1/enums2.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl TravelType{
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 22 |     fn travel_allowance(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]   --> src/ex1/enums2.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | enum Value{
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/enums2.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn run()
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/conditionals.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/basics.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run()
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_fn` is never used
[INFO] [stdout]   --> src/ex1/basics.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn my_fn(s: &str)
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiplication` is never used
[INFO] [stdout]   --> src/ex1/basics.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn multiplication(a:i32, b:i32) -> i32 
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2` is never used
[INFO] [stdout]   --> src/ex1/basics.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn f2(a:i32, b:i32) -> (i32, i32, i32)
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dog` is never constructed
[INFO] [stdout]   --> src/ex1/io_json.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Dog{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DogOwner` is never constructed
[INFO] [stdout]   --> src/ex1/io_json.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct DogOwner{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/io_json.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn run() 
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dog_serialization` is never used
[INFO] [stdout]   --> src/ex1/io_json.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn dog_serialization()
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dog_deserialization` is never used
[INFO] [stdout]   --> src/ex1/io_json.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn dog_deserialization()
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/ownership.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_ownership` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn takes_ownership(vec: &mut Vec<i32>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `give_ownership` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn give_ownership() -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `combined_ownership` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn combined_ownership(mut v: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn f2() {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn f3() {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_str` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn generate_str() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Geometry` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Geometry {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Elevation` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Elevation {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Level` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Level {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Area` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Area {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Val` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Val {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ValVec` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct ValVec {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rooms` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub struct Rooms {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Data` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct Data {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/parse_json.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_json` is never used
[INFO] [stdout]   --> src/ex1/parse_json.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn test_json(inp: Data) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/vectors.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/func_json.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/cli.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/funcs.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet` is never used
[INFO] [stdout]   --> src/ex1/funcs.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn greet (g: &str, name: &str) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/ex1/funcs.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn add(n1:i32, n2:i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]  --> src/ex1/func_json2.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Person {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/func_json2.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]  --> src/ex1/structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Color {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ColorX` is never constructed
[INFO] [stdout]  --> src/ex1/structs.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct ColorX (u8, u8, u8, u8);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> src/ex1/structs.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `full_name`, `set_last_name`, and `to_tuple` are never used
[INFO] [stdout]   --> src/ex1/structs.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Person {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 19 |     fn new(f: &str, l: &str) -> Person{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn full_name(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn set_last_name(&mut self, x: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn to_tuple(self) -> (String, String){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/structs.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn run(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/maths.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Car` is never constructed
[INFO] [stdout]  --> src/ex1/structs2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Car {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `display_car_info`, `update_fuel`, `sell`, `monthly_insurance`, and `selling_price` are never used
[INFO] [stdout]   --> src/ex1/structs2.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Car {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 9  |     fn new(name: String, year: u32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn display_car_info(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn update_fuel(&mut self, gallons: f32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn sell(self) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn monthly_insurance() -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn selling_price(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/structs2.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run2` is never used
[INFO] [stdout]   --> src/ex1/structs2.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn run2() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run3` is never used
[INFO] [stdout]   --> src/ex1/structs2.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub fn run3() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/structs_enums.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() 
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> src/ex1/options_ex.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_grade` is never used
[INFO] [stdout]  --> src/ex1/options_ex.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_grade(n:&String, db:&Vec<Student>) -> Option<u32>{
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/options_ex.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn run() 
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> src/ex1/result_ex.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_grade` is never used
[INFO] [stdout]  --> src/ex1/result_ex.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_grade(n:&String, db:&Vec<Student>) -> Option<u32>{
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_student` is never used
[INFO] [stdout]   --> src/ex1/result_ex.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn check_student(n:&String, db:&Vec<Student>) -> Result<(), String>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_student_grade` is never used
[INFO] [stdout]   --> src/ex1/result_ex.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn check_student_grade(n:&String, db:&Vec<Student>) -> Result<Option<u32>, String>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/result_ex.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn run() 
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run2` is never used
[INFO] [stdout]   --> src/ex1/result_ex.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn run2(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/hashmaps.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run2` is never used
[INFO] [stdout]   --> src/ex1/hashmaps.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn run2(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> src/ex1/hashmap_ex.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StudentManager` is never constructed
[INFO] [stdout]   --> src/ex1/hashmap_ex.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct StudentManager {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_student`, `get_student`, and `display` are never used
[INFO] [stdout]   --> src/ex1/hashmap_ex.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl StudentManager {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn add_student(&mut self, i: i32, s: Student) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn get_student(&mut self, i: i32) -> bool{
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn display(&mut self) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/ex1/hashmap_ex.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Data` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Data {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Assets` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Assets {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Asset` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Asset {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Properties` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct Properties {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Location` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct Location {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SpeckleReference` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct SpeckleReference {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Argument` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct Argument {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_json` is never used
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn test_json(inp: Data) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Structure` is never constructed
[INFO] [stdout]  --> src/ex2/formatting.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Structure(i32);
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]   --> src/ex2/formatting.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct List(Vec<i32>);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/formatting.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn run(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/ex2/literals.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn reverse(pair:(i32, bool)) -> (bool, i32){
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/literals.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn run(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex2/ref_borrow_slices.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run()
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]   --> src/ex2/ref_borrow_slices.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn first_word(s: &String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/ex2/structs2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Rectangle{
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_area` is never used
[INFO] [stdout]  --> src/ex2/structs2.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Rectangle{
[INFO] [stdout]   | -------------- method in this implementation
[INFO] [stdout] 6 |     fn get_area(&self) -> f32{
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `width` is never used
[INFO] [stdout]   --> src/ex2/structs2.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Rectangle{
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 13 |     fn width(&self) -> bool{
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/structs2.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn run()
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/ex2/enum2.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind{
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/ex2/enum2.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]   --> src/ex2/enum2.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/enum2.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn run()
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/ex2/generic_data_types.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Point<T, U>{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `display` is never used
[INFO] [stdout]  --> src/ex2/generic_data_types.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl Point<i8, f32>{
[INFO] [stdout]   | ------------------- method in this implementation
[INFO] [stdout] 8 |     fn display(&self){
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/generic_data_types.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn run(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_and_divide` is never used
[INFO] [stdout]  --> src/ex2/opt2.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn check_and_divide(dividend: i32, divisor: i32) -> Option<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `divide` is never used
[INFO] [stdout]   --> src/ex2/opt2.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn divide(a: i32, b: i32) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/opt2.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Name` is never constructed
[INFO] [stdout]  --> src/ex2/read_file.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Name(String);
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read` is never used
[INFO] [stdout]  --> src/ex2/read_file.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn read(){
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/read_file.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn run()
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `WeekDay` is never used
[INFO] [stdout]  --> src/ex1/enums2.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum WeekDay{
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/ex1/basics.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         format!("{fname} {lname}");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let _ = format!("{fname} {lname}");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TravelType` is never used
[INFO] [stdout]   --> src/ex1/enums2.rs:15:6
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum TravelType{
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `travel_allowance` is never used
[INFO] [stdout]   --> src/ex1/enums2.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl TravelType{
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 22 |     fn travel_allowance(&self) -> f32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]   --> src/ex1/enums2.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | enum Value{
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/enums2.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn run()
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/conditionals.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/basics.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run()
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `my_fn` is never used
[INFO] [stdout]   --> src/ex1/basics.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn my_fn(s: &str)
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiplication` is never used
[INFO] [stdout]   --> src/ex1/basics.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn multiplication(a:i32, b:i32) -> i32 
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2` is never used
[INFO] [stdout]   --> src/ex1/basics.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn f2(a:i32, b:i32) -> (i32, i32, i32)
[INFO] [stdout]    |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dog` is never constructed
[INFO] [stdout]   --> src/ex1/io_json.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Dog{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DogOwner` is never constructed
[INFO] [stdout]   --> src/ex1/io_json.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct DogOwner{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/io_json.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn run() 
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dog_serialization` is never used
[INFO] [stdout]   --> src/ex1/io_json.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn dog_serialization()
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dog_deserialization` is never used
[INFO] [stdout]   --> src/ex1/io_json.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn dog_deserialization()
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/ownership.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `takes_ownership` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn takes_ownership(vec: &mut Vec<i32>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `give_ownership` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn give_ownership() -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `combined_ownership` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn combined_ownership(mut v: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f2` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn f2() {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `f3` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn f3() {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_str` is never used
[INFO] [stdout]   --> src/ex1/ownership.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn generate_str() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Geometry` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Geometry {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Elevation` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Elevation {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Level` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Level {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Area` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Area {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Val` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct Val {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ValVec` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct ValVec {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rooms` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub struct Rooms {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Data` is never constructed
[INFO] [stdout]   --> src/ex1/parse_json.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct Data {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/parse_json.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_json` is never used
[INFO] [stdout]   --> src/ex1/parse_json.rs:85:8
[INFO] [stdout]    |
[INFO] [stdout] 85 | pub fn test_json(inp: Data) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/vectors.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/func_json.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/cli.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/funcs.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greet` is never used
[INFO] [stdout]   --> src/ex1/funcs.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn greet (g: &str, name: &str) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/ex1/funcs.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn add(n1:i32, n2:i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]  --> src/ex1/func_json2.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Person {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/func_json2.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]  --> src/ex1/structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Color {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ColorX` is never constructed
[INFO] [stdout]  --> src/ex1/structs.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct ColorX (u8, u8, u8, u8);
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> src/ex1/structs.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `full_name`, `set_last_name`, and `to_tuple` are never used
[INFO] [stdout]   --> src/ex1/structs.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Person {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 19 |     fn new(f: &str, l: &str) -> Person{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn full_name(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn set_last_name(&mut self, x: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn to_tuple(self) -> (String, String){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/structs.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn run(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/maths.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Car` is never constructed
[INFO] [stdout]  --> src/ex1/structs2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Car {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `display_car_info`, `update_fuel`, `sell`, `monthly_insurance`, and `selling_price` are never used
[INFO] [stdout]   --> src/ex1/structs2.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Car {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 9  |     fn new(name: String, year: u32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn display_car_info(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn update_fuel(&mut self, gallons: f32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn sell(self) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn monthly_insurance() -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn selling_price(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/structs2.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run2` is never used
[INFO] [stdout]   --> src/ex1/structs2.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn run2() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run3` is never used
[INFO] [stdout]   --> src/ex1/structs2.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub fn run3() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/structs_enums.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() 
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> src/ex1/options_ex.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_grade` is never used
[INFO] [stdout]  --> src/ex1/options_ex.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_grade(n:&String, db:&Vec<Student>) -> Option<u32>{
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/options_ex.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn run() 
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> src/ex1/result_ex.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_grade` is never used
[INFO] [stdout]  --> src/ex1/result_ex.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn get_grade(n:&String, db:&Vec<Student>) -> Option<u32>{
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_student` is never used
[INFO] [stdout]   --> src/ex1/result_ex.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn check_student(n:&String, db:&Vec<Student>) -> Result<(), String>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_student_grade` is never used
[INFO] [stdout]   --> src/ex1/result_ex.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn check_student_grade(n:&String, db:&Vec<Student>) -> Result<Option<u32>, String>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/result_ex.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn run() 
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run2` is never used
[INFO] [stdout]   --> src/ex1/result_ex.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn run2(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex1/hashmaps.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn run(){
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run2` is never used
[INFO] [stdout]   --> src/ex1/hashmaps.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn run2(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Student` is never constructed
[INFO] [stdout]  --> src/ex1/hashmap_ex.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Student {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StudentManager` is never constructed
[INFO] [stdout]   --> src/ex1/hashmap_ex.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct StudentManager {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_student`, `get_student`, and `display` are never used
[INFO] [stdout]   --> src/ex1/hashmap_ex.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl StudentManager {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn add_student(&mut self, i: i32, s: Student) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn get_student(&mut self, i: i32) -> bool{
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn display(&mut self) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/ex1/hashmap_ex.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Data` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Data {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Assets` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Assets {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Asset` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Asset {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Properties` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct Properties {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Location` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | struct Location {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SpeckleReference` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct SpeckleReference {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Argument` is never constructed
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub struct Argument {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_json` is never used
[INFO] [stdout]   --> src/ex1/asset_json_parser.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn test_json(inp: Data) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Structure` is never constructed
[INFO] [stdout]  --> src/ex2/formatting.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Structure(i32);
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]   --> src/ex2/formatting.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct List(Vec<i32>);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/formatting.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn run(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/ex2/literals.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn reverse(pair:(i32, bool)) -> (bool, i32){
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/literals.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn run(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/ex2/ref_borrow_slices.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run()
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]   --> src/ex2/ref_borrow_slices.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn first_word(s: &String) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/ex2/structs2.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Rectangle{
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_area` is never used
[INFO] [stdout]  --> src/ex2/structs2.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Rectangle{
[INFO] [stdout]   | -------------- method in this implementation
[INFO] [stdout] 6 |     fn get_area(&self) -> f32{
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `width` is never used
[INFO] [stdout]   --> src/ex2/structs2.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Rectangle{
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 13 |     fn width(&self) -> bool{
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/structs2.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn run()
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IpAddrKind` is never used
[INFO] [stdout]  --> src/ex2/enum2.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum IpAddrKind{
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]  --> src/ex2/enum2.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Coin {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]   --> src/ex2/enum2.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/enum2.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn run()
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/ex2/generic_data_types.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Point<T, U>{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `display` is never used
[INFO] [stdout]  --> src/ex2/generic_data_types.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl Point<i8, f32>{
[INFO] [stdout]   | ------------------- method in this implementation
[INFO] [stdout] 8 |     fn display(&self){
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/generic_data_types.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn run(){
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_and_divide` is never used
[INFO] [stdout]  --> src/ex2/opt2.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn check_and_divide(dividend: i32, divisor: i32) -> Option<i32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `divide` is never used
[INFO] [stdout]   --> src/ex2/opt2.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn divide(a: i32, b: i32) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/opt2.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Name` is never constructed
[INFO] [stdout]  --> src/ex2/read_file.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Name(String);
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read` is never used
[INFO] [stdout]  --> src/ex2/read_file.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn read(){
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/ex2/read_file.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn run()
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/ex1/basics.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         format!("{fname} {lname}");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let _ = format!("{fname} {lname}");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.08s
[INFO] running `Command { std: "docker" "inspect" "5e4a72db5be6beb2d6ba19a7f72f807913054d1c2a30b093f0067fcd4d9c0b92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e4a72db5be6beb2d6ba19a7f72f807913054d1c2a30b093f0067fcd4d9c0b92", kill_on_drop: false }`
[INFO] [stdout] 5e4a72db5be6beb2d6ba19a7f72f807913054d1c2a30b093f0067fcd4d9c0b92