[INFO] cloning repository https://github.com/sinabro-dev/hello-rust-by-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sinabro-dev/hello-rust-by-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinabro-dev%2Fhello-rust-by-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinabro-dev%2Fhello-rust-by-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ac67a6c4e220da974b951b80ef10dc021c95f52b
[INFO] checking sinabro-dev/hello-rust-by-example against try#b28cc4eb48a6415b914e8ad0308be255ff8d73ed for pr-156508
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinabro-dev%2Fhello-rust-by-example" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sinabro-dev/hello-rust-by-example
[INFO] finished tweaking git repo https://github.com/sinabro-dev/hello-rust-by-example
[INFO] tweaked toml for git repo https://github.com/sinabro-dev/hello-rust-by-example written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sinabro-dev/hello-rust-by-example on toolchain b28cc4eb48a6415b914e8ad0308be255ff8d73ed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sinabro-dev/hello-rust-by-example 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" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking sinabro-dev/hello-rust-by-example against try#b28cc4eb48a6415b914e8ad0308be255ff8d73ed for pr-156508
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinabro-dev%2Fhello-rust-by-example" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sinabro-dev/hello-rust-by-example
[INFO] finished tweaking git repo https://github.com/sinabro-dev/hello-rust-by-example
[INFO] tweaked toml for git repo https://github.com/sinabro-dev/hello-rust-by-example written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sinabro-dev/hello-rust-by-example on toolchain b28cc4eb48a6415b914e8ad0308be255ff8d73ed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sinabro-dev/hello-rust-by-example 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" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f9b5dbf966b62291ba690bed0b53f03cb14350284cb7c6c53aa5f9e64324cd3
[INFO] running `Command { std: "docker" "start" "-a" "0f9b5dbf966b62291ba690bed0b53f03cb14350284cb7c6c53aa5f9e64324cd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f9b5dbf966b62291ba690bed0b53f03cb14350284cb7c6c53aa5f9e64324cd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f9b5dbf966b62291ba690bed0b53f03cb14350284cb7c6c53aa5f9e64324cd3", kill_on_drop: false }`
[INFO] [stdout] 0f9b5dbf966b62291ba690bed0b53f03cb14350284cb7c6c53aa5f9e64324cd3
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b28cc4eb48a6415b914e8ad0308be255ff8d73ed" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d0d6a2e71be2e9761eaffe6e2e8d2cfe3ab7117e09c8332079b25614e1c730c
[INFO] running `Command { std: "docker" "start" "-a" "9d0d6a2e71be2e9761eaffe6e2e8d2cfe3ab7117e09c8332079b25614e1c730c", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-by-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]   --> src/a_hello_world.rs:71:42
[INFO] [stdout]    |
[INFO] [stdout] 71 | use std::fmt::{self, Formatter, Display, write};
[INFO] [stdout]    |                                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]    --> src/c_custom_types.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 | use std::fmt::format;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/h_flow_of_control.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         'inner: loop {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]   --> src/a_hello_world.rs:71:42
[INFO] [stdout]    |
[INFO] [stdout] 71 | use std::fmt::{self, Formatter, Display, write};
[INFO] [stdout]    |                                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]    --> src/c_custom_types.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 | use std::fmt::format;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/h_flow_of_control.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         'inner: loop {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/h_flow_of_control.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |             break 'outer;
[INFO] [stdout]    |             ------------ any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 75 |         println!("This point will never be reached");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/h_flow_of_control.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |             break 'outer;
[INFO] [stdout]    |             ------------ any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 75 |         println!("This point will never be reached");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical`
[INFO] [stdout]  --> src/b_primitives.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let logical: bool = true;
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_float`
[INFO] [stdout]   --> src/b_primitives.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let default_float = 3.0; // f64
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_integer`
[INFO] [stdout]   --> src/b_primitives.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let default_integer = 7; // i32
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_float`
[INFO] [stdout]   --> src/b_primitives.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let a_float: f64 = 1.0;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `an_integer`
[INFO] [stdout]   --> src/b_primitives.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let an_integer = 5i32;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inferred_type` is assigned to, but never used
[INFO] [stdout]   --> src/b_primitives.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut inferred_type = 12; // i64
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_inferred_type` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `mutable` is assigned to, but never used
[INFO] [stdout]   --> src/b_primitives.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut mutable = 12;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_mutable` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutable`
[INFO] [stdout]   --> src/b_primitives.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mutable = true; // overwritten with shadowing
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inferred_type` is never read
[INFO] [stdout]   --> src/b_primitives.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     inferred_type = 4294967296i64;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mutable` is never read
[INFO] [stdout]   --> src/b_primitives.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     mutable = 21;   // can be changed
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical`
[INFO] [stdout]  --> src/b_primitives.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let logical: bool = true;
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_float`
[INFO] [stdout]   --> src/b_primitives.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let default_float = 3.0; // f64
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_integer`
[INFO] [stdout]   --> src/b_primitives.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let default_integer = 7; // i32
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_float`
[INFO] [stdout]   --> src/b_primitives.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let a_float: f64 = 1.0;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `an_integer`
[INFO] [stdout]   --> src/b_primitives.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let an_integer = 5i32;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inferred_type` is assigned to, but never used
[INFO] [stdout]   --> src/b_primitives.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut inferred_type = 12; // i64
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_inferred_type` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `mutable` is assigned to, but never used
[INFO] [stdout]   --> src/b_primitives.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut mutable = 12;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_mutable` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutable`
[INFO] [stdout]   --> src/b_primitives.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mutable = true; // overwritten with shadowing
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inferred_type` is never read
[INFO] [stdout]   --> src/b_primitives.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     inferred_type = 4294967296i64;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mutable` is never read
[INFO] [stdout]   --> src/b_primitives.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     mutable = 21;   // can be changed
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `immutable_binding`
[INFO] [stdout]   --> src/d_variable_bindings.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let immutable_binding = 1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `immutable_binding`
[INFO] [stdout]   --> src/d_variable_bindings.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let immutable_binding = 1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_immutable_binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/h_flow_of_control.rs:399:21
[INFO] [stdout]     |
[INFO] [stdout] 399 |     if let Foo::Qux(value @ 100) = b {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/h_flow_of_control.rs:399:21
[INFO] [stdout]     |
[INFO] [stdout] 399 |     if let Foo::Qux(value @ 100) = b {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/o_scoping_rules.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let x = ToDrop;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/o_scoping_rules.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let x = ToDrop;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/a_hello_world.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> src/a_hello_world.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn intro() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `format_print` is never used
[INFO] [stdout]   --> src/a_hello_world.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn format_print() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> src/a_hello_world.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Person<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `debug` is never used
[INFO] [stdout]   --> src/a_hello_world.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn debug() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2D` is never constructed
[INFO] [stdout]   --> src/a_hello_world.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | struct Point2D {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyList` is never constructed
[INFO] [stdout]   --> src/a_hello_world.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct MyList(Vec<i32>);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display` is never used
[INFO] [stdout]   --> src/a_hello_world.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn display() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `City` is never constructed
[INFO] [stdout]    --> src/a_hello_world.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | struct City {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]    --> src/a_hello_world.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | struct Color {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `formatting` is never used
[INFO] [stdout]    --> src/a_hello_world.rs:139:4
[INFO] [stdout]     |
[INFO] [stdout] 139 | fn formatting() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/b_primitives.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `types` is never used
[INFO] [stdout]  --> src/b_primitives.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn types() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `literals_and_operators` is never used
[INFO] [stdout]   --> src/b_primitives.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn literals_and_operators() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tuples` is never used
[INFO] [stdout]   --> src/b_primitives.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn tuples() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arrays_and_slices` is never used
[INFO] [stdout]   --> src/b_primitives.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn arrays_and_slices() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/c_custom_types.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Unit` is never constructed
[INFO] [stdout]   --> src/c_custom_types.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Unit;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]   --> src/c_custom_types.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Pair(i32, f32);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/c_custom_types.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/c_custom_types.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `structures` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn structures() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Number` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:56:6
[INFO] [stdout]    |
[INFO] [stdout] 56 | enum Number {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:62:6
[INFO] [stdout]    |
[INFO] [stdout] 62 | enum Color {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enums` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn enums() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `WebEvent` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:80:6
[INFO] [stdout]    |
[INFO] [stdout] 80 | enum WebEvent {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inspect` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn inspect(event: WebEvent) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `web_events` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn web_events() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `VeryVerboseEnumOfThingsToDoWithNumbers` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:119:6
[INFO] [stdout]     |
[INFO] [stdout] 119 | enum VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 124 | impl VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]     | ------------------------------------------- method in this implementation
[INFO] [stdout] 125 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Operations` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:133:6
[INFO] [stdout]     |
[INFO] [stdout] 133 | type Operations = VeryVerboseEnumOfThingsToDoWithNumbers;
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `type_aliases` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn type_aliases() {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LinkedList` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:141:6
[INFO] [stdout]     |
[INFO] [stdout] 141 | enum LinkedList {
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `prepend`, `len`, and `stringify` are never used
[INFO] [stdout]    --> src/c_custom_types.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 148 | impl LinkedList {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 149 |     fn new() -> LinkedList {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn prepend(self, elem: u32) -> LinkedList {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn len(&self) -> u32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 164 |     fn stringify(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `linked_list` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn linked_list() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `LANGUAGE` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 | static LANGUAGE: &str = "Rust";
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `THRESHOLD` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:194:7
[INFO] [stdout]     |
[INFO] [stdout] 194 | const THRESHOLD: i32 = 10;
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_big` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:196:4
[INFO] [stdout]     |
[INFO] [stdout] 196 | fn is_big(n: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `constants` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:200:4
[INFO] [stdout]     |
[INFO] [stdout] 200 | fn constants() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/d_variable_bindings.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/a_hello_world.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn intro() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mutability` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn mutability() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scope` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn scope() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadowing` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn shadowing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> src/a_hello_world.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn intro() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `declare_first` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn declare_first() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `freezing` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn freezing() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/e_rust.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `casting` is never used
[INFO] [stdout]   --> src/e_rust.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn casting() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `literals` is never used
[INFO] [stdout]   --> src/e_rust.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn literals() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inference` is never used
[INFO] [stdout]   --> src/e_rust.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn inference() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NanoSecond` is never used
[INFO] [stdout]    --> src/e_rust.rs:108:6
[INFO] [stdout]     |
[INFO] [stdout] 108 | type NanoSecond = u64;
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Inch` is never used
[INFO] [stdout]    --> src/e_rust.rs:109:6
[INFO] [stdout]     |
[INFO] [stdout] 109 | type Inch = u64;
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `U64` is never used
[INFO] [stdout]    --> src/e_rust.rs:110:6
[INFO] [stdout]     |
[INFO] [stdout] 110 | type U64 = u64;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `aliasing` is never used
[INFO] [stdout]    --> src/e_rust.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn aliasing() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/f_conversion.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyNumber` is never constructed
[INFO] [stdout]   --> src/f_conversion.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct MyNumber {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_and_into` is never used
[INFO] [stdout]   --> src/f_conversion.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn from_and_into() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EvenNumber` is never constructed
[INFO] [stdout]   --> src/f_conversion.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct EvenNumber(i32);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_from_and_try_into` is never used
[INFO] [stdout]   --> src/f_conversion.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn try_from_and_try_into() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/f_conversion.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_and_from_strings` is never used
[INFO] [stdout]   --> src/f_conversion.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn to_and_from_strings() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/g_expressions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expressions` is never used
[INFO] [stdout]  --> src/g_expressions.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn expressions() {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `format_print` is never used
[INFO] [stdout]   --> src/a_hello_world.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn format_print() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Person` is never constructed
[INFO] [stdout]   --> src/a_hello_world.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Person<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `debug` is never used
[INFO] [stdout]   --> src/a_hello_world.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn debug() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point2D` is never constructed
[INFO] [stdout]   --> src/a_hello_world.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | struct Point2D {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/h_flow_of_control.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyList` is never constructed
[INFO] [stdout]   --> src/a_hello_world.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct MyList(Vec<i32>);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `if_else` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn if_else() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display` is never used
[INFO] [stdout]   --> src/a_hello_world.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn display() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_and_break` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn loop_and_break() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `City` is never constructed
[INFO] [stdout]    --> src/a_hello_world.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | struct City {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `nesting_and_labels` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn nesting_and_labels() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returning_from_loops` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn returning_from_loops() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Color` is never constructed
[INFO] [stdout]    --> src/a_hello_world.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | struct Color {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `formatting` is never used
[INFO] [stdout]    --> src/a_hello_world.rs:139:4
[INFO] [stdout]     |
[INFO] [stdout] 139 | fn formatting() {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `while_loops` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn while_loops() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_loops` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn for_loops() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/b_primitives.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_keyword` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn match_keyword() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `types` is never used
[INFO] [stdout]  --> src/b_primitives.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn types() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_destructuring` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:199:4
[INFO] [stdout]     |
[INFO] [stdout] 199 | fn match_destructuring() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `literals_and_operators` is never used
[INFO] [stdout]   --> src/b_primitives.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn literals_and_operators() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_guards` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:314:4
[INFO] [stdout]     |
[INFO] [stdout] 314 | fn match_guards() {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tuples` is never used
[INFO] [stdout]   --> src/b_primitives.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn tuples() {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_binding` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:337:4
[INFO] [stdout]     |
[INFO] [stdout] 337 | fn match_binding() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `if_let` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:360:4
[INFO] [stdout]     |
[INFO] [stdout] 360 | fn if_let() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arrays_and_slices` is never used
[INFO] [stdout]   --> src/b_primitives.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn arrays_and_slices() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `while_let` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:405:4
[INFO] [stdout]     |
[INFO] [stdout] 405 | fn while_let() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/c_custom_types.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/i_functions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Unit` is never constructed
[INFO] [stdout]   --> src/c_custom_types.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Unit;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]   --> src/i_functions.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn intro() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pair` is never constructed
[INFO] [stdout]   --> src/c_custom_types.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Pair(i32, f32);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `associated_functions_and_methods` is never used
[INFO] [stdout]   --> src/i_functions.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn associated_functions_and_methods() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/c_custom_types.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Point {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `origin` and `new` are never used
[INFO] [stdout]   --> src/i_functions.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     impl Point {
[INFO] [stdout]    |     ---------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 72 |         fn origin() -> Point {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |         fn new(x: f64, y: f64) -> Point {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]   --> src/c_custom_types.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Rectangle {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `structures` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn structures() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `area`, `perimeter`, and `translate` are never used
[INFO] [stdout]    --> src/i_functions.rs:90:12
[INFO] [stdout]     |
[INFO] [stdout]  84 |     impl Rectangle {
[INFO] [stdout]     |     -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  90 |         fn area(&self) -> f64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  95 |         fn perimeter(&self) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |         fn translate(&mut self, x: f64, y: f64) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Number` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:56:6
[INFO] [stdout]    |
[INFO] [stdout] 56 | enum Number {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `destroy` is never used
[INFO] [stdout]    --> src/i_functions.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 132 |     impl Pair {
[INFO] [stdout]     |     --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 138 |         fn destroy(self) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Color` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:62:6
[INFO] [stdout]    |
[INFO] [stdout] 62 | enum Color {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures` is never used
[INFO] [stdout]    --> src/i_functions.rs:149:4
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn closures() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enums` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn enums() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `WebEvent` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:80:6
[INFO] [stdout]    |
[INFO] [stdout] 80 | enum WebEvent {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_capturing` is never used
[INFO] [stdout]    --> src/i_functions.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn closures_capturing() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inspect` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn inspect(event: WebEvent) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_move` is never used
[INFO] [stdout]    --> src/i_functions.rs:212:4
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn closures_move() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_as_input_params` is never used
[INFO] [stdout]    --> src/i_functions.rs:233:4
[INFO] [stdout]     |
[INFO] [stdout] 233 | fn closures_as_input_params() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `web_events` is never used
[INFO] [stdout]   --> src/c_custom_types.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn web_events() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_type_anonymity` is never used
[INFO] [stdout]    --> src/i_functions.rs:271:4
[INFO] [stdout]     |
[INFO] [stdout] 271 | fn closures_type_anonymity() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `VeryVerboseEnumOfThingsToDoWithNumbers` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:119:6
[INFO] [stdout]     |
[INFO] [stdout] 119 | enum VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_input_functions` is never used
[INFO] [stdout]    --> src/i_functions.rs:284:4
[INFO] [stdout]     |
[INFO] [stdout] 284 | fn closures_input_functions() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_as_output_params` is never used
[INFO] [stdout]    --> src/i_functions.rs:300:4
[INFO] [stdout]     |
[INFO] [stdout] 300 | fn closures_as_output_params() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_iterator_any` is never used
[INFO] [stdout]    --> src/i_functions.rs:337:4
[INFO] [stdout]     |
[INFO] [stdout] 337 | fn closures_iterator_any() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `run` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 124 | impl VeryVerboseEnumOfThingsToDoWithNumbers {
[INFO] [stdout]     | ------------------------------------------- method in this implementation
[INFO] [stdout] 125 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `higher_order_functions` is never used
[INFO] [stdout]    --> src/i_functions.rs:355:4
[INFO] [stdout]     |
[INFO] [stdout] 355 | fn higher_order_functions() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Operations` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:133:6
[INFO] [stdout]     |
[INFO] [stdout] 133 | type Operations = VeryVerboseEnumOfThingsToDoWithNumbers;
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `diverging_functions` is never used
[INFO] [stdout]    --> src/i_functions.rs:390:4
[INFO] [stdout]     |
[INFO] [stdout] 390 | fn diverging_functions() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `type_aliases` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn type_aliases() {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/j_modules.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LinkedList` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:141:6
[INFO] [stdout]     |
[INFO] [stdout] 141 | enum LinkedList {
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `visibility` is never used
[INFO] [stdout]   --> src/j_modules.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn visibility() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `struct_visibility` is never used
[INFO] [stdout]    --> src/j_modules.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn struct_visibility() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_declaration` is never used
[INFO] [stdout]    --> src/j_modules.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn use_declaration() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn function() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `prepend`, `len`, and `stringify` are never used
[INFO] [stdout]    --> src/c_custom_types.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 148 | impl LinkedList {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 149 |     fn new() -> LinkedList {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn prepend(self, elem: u32) -> LinkedList {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn len(&self) -> u32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 164 |     fn stringify(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `super_and_self` is never used
[INFO] [stdout]    --> src/j_modules.rs:191:4
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn super_and_self() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `private_function` is never used
[INFO] [stdout]  --> src/j_modules.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn private_function() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `linked_list` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn linked_list() {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `LANGUAGE` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 | static LANGUAGE: &str = "Rust";
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]   --> src/j_modules.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn function() {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `THRESHOLD` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:194:7
[INFO] [stdout]     |
[INFO] [stdout] 194 | const THRESHOLD: i32 = 10;
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `indirect_access` is never used
[INFO] [stdout]   --> src/j_modules.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn indirect_access() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_big` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:196:4
[INFO] [stdout]     |
[INFO] [stdout] 196 | fn is_big(n: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_public_function_in_my_mod` is never used
[INFO] [stdout]   --> src/j_modules.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn call_public_function_in_my_mod() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `constants` is never used
[INFO] [stdout]    --> src/c_custom_types.rs:200:4
[INFO] [stdout]     |
[INFO] [stdout] 200 | fn constants() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_crate` is never used
[INFO] [stdout]   --> src/j_modules.rs:46:19
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub(crate) fn public_function_in_crate() {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/d_variable_bindings.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `private_function` is never used
[INFO] [stdout]   --> src/j_modules.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn private_function() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn intro() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mutability` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn mutability() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scope` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn scope() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shadowing` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn shadowing() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `declare_first` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn declare_first() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `freezing` is never used
[INFO] [stdout]   --> src/d_variable_bindings.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn freezing() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/e_rust.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `casting` is never used
[INFO] [stdout]   --> src/e_rust.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn casting() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `literals` is never used
[INFO] [stdout]   --> src/e_rust.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn literals() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `inference` is never used
[INFO] [stdout]   --> src/e_rust.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn inference() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NanoSecond` is never used
[INFO] [stdout]    --> src/e_rust.rs:108:6
[INFO] [stdout]     |
[INFO] [stdout] 108 | type NanoSecond = u64;
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Inch` is never used
[INFO] [stdout]    --> src/e_rust.rs:109:6
[INFO] [stdout]     |
[INFO] [stdout] 109 | type Inch = u64;
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `U64` is never used
[INFO] [stdout]    --> src/e_rust.rs:110:6
[INFO] [stdout]     |
[INFO] [stdout] 110 | type U64 = u64;
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `aliasing` is never used
[INFO] [stdout]    --> src/e_rust.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn aliasing() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/f_conversion.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyNumber` is never constructed
[INFO] [stdout]   --> src/f_conversion.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct MyNumber {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `from_and_into` is never used
[INFO] [stdout]   --> src/f_conversion.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn from_and_into() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EvenNumber` is never constructed
[INFO] [stdout]   --> src/f_conversion.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct EvenNumber(i32);
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_from_and_try_into` is never used
[INFO] [stdout]   --> src/f_conversion.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn try_from_and_try_into() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]   --> src/f_conversion.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | struct Circle {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_and_from_strings` is never used
[INFO] [stdout]   --> src/f_conversion.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn to_and_from_strings() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/g_expressions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]   --> src/j_modules.rs:24:16
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn function() {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expressions` is never used
[INFO] [stdout]  --> src/g_expressions.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn expressions() {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_nested` is never used
[INFO] [stdout]   --> src/j_modules.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub(self) fn public_function_in_nested() { // the same as leaving them private
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/h_flow_of_control.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `if_else` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn if_else() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loop_and_break` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn loop_and_break() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `nesting_and_labels` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn nesting_and_labels() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returning_from_loops` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn returning_from_loops() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `while_loops` is never used
[INFO] [stdout]   --> src/h_flow_of_control.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn while_loops() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_loops` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn for_loops() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_keyword` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn match_keyword() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_destructuring` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:199:4
[INFO] [stdout]     |
[INFO] [stdout] 199 | fn match_destructuring() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_guards` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:314:4
[INFO] [stdout]     |
[INFO] [stdout] 314 | fn match_guards() {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_binding` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:337:4
[INFO] [stdout]     |
[INFO] [stdout] 337 | fn match_binding() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `if_let` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:360:4
[INFO] [stdout]     |
[INFO] [stdout] 360 | fn if_let() {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `while_let` is never used
[INFO] [stdout]    --> src/h_flow_of_control.rs:405:4
[INFO] [stdout]     |
[INFO] [stdout] 405 | fn while_let() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/i_functions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]   --> src/i_functions.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn intro() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `associated_functions_and_methods` is never used
[INFO] [stdout]   --> src/i_functions.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn associated_functions_and_methods() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `origin` and `new` are never used
[INFO] [stdout]   --> src/i_functions.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     impl Point {
[INFO] [stdout]    |     ---------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 72 |         fn origin() -> Point {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |         fn new(x: f64, y: f64) -> Point {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `area`, `perimeter`, and `translate` are never used
[INFO] [stdout]    --> src/i_functions.rs:90:12
[INFO] [stdout]     |
[INFO] [stdout]  84 |     impl Rectangle {
[INFO] [stdout]     |     -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  90 |         fn area(&self) -> f64 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  95 |         fn perimeter(&self) -> f64 {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |         fn translate(&mut self, x: f64, y: f64) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `destroy` is never used
[INFO] [stdout]    --> src/i_functions.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 132 |     impl Pair {
[INFO] [stdout]     |     --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 138 |         fn destroy(self) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures` is never used
[INFO] [stdout]    --> src/i_functions.rs:149:4
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn closures() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_capturing` is never used
[INFO] [stdout]    --> src/i_functions.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn closures_capturing() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_my_mod` is never used
[INFO] [stdout]   --> src/j_modules.rs:30:45
[INFO] [stdout]    |
[INFO] [stdout] 30 |         pub(in crate::j_modules::my_mod) fn public_function_in_my_mod() {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_super_mod` is never used
[INFO] [stdout]   --> src/j_modules.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 |         pub(super) fn public_function_in_super_mod() {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]   --> src/j_modules.rs:51:16
[INFO] [stdout]    |
[INFO] [stdout] 51 |         pub fn function() {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `restricted_function` is never used
[INFO] [stdout]   --> src/j_modules.rs:54:23
[INFO] [stdout]    |
[INFO] [stdout] 54 |         pub(crate) fn restricted_function() {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OpenBox` is never constructed
[INFO] [stdout]   --> src/j_modules.rs:96:16
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub struct OpenBox<T> {
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClosedBox` is never constructed
[INFO] [stdout]   --> src/j_modules.rs:99:16
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub struct ClosedBox<T> {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_move` is never used
[INFO] [stdout]    --> src/i_functions.rs:212:4
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn closures_move() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_as_input_params` is never used
[INFO] [stdout]    --> src/i_functions.rs:233:4
[INFO] [stdout]     |
[INFO] [stdout] 233 | fn closures_as_input_params() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_type_anonymity` is never used
[INFO] [stdout]    --> src/i_functions.rs:271:4
[INFO] [stdout]     |
[INFO] [stdout] 271 | fn closures_type_anonymity() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_input_functions` is never used
[INFO] [stdout]    --> src/i_functions.rs:284:4
[INFO] [stdout]     |
[INFO] [stdout] 284 | fn closures_input_functions() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_as_output_params` is never used
[INFO] [stdout]    --> src/i_functions.rs:300:4
[INFO] [stdout]     |
[INFO] [stdout] 300 | fn closures_as_output_params() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closures_iterator_any` is never used
[INFO] [stdout]    --> src/i_functions.rs:337:4
[INFO] [stdout]     |
[INFO] [stdout] 337 | fn closures_iterator_any() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `higher_order_functions` is never used
[INFO] [stdout]    --> src/i_functions.rs:355:4
[INFO] [stdout]     |
[INFO] [stdout] 355 | fn higher_order_functions() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `diverging_functions` is never used
[INFO] [stdout]    --> src/i_functions.rs:390:4
[INFO] [stdout]     |
[INFO] [stdout] 390 | fn diverging_functions() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/j_modules.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `visibility` is never used
[INFO] [stdout]   --> src/j_modules.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn visibility() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `struct_visibility` is never used
[INFO] [stdout]    --> src/j_modules.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn struct_visibility() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_declaration` is never used
[INFO] [stdout]    --> src/j_modules.rs:134:4
[INFO] [stdout]     |
[INFO] [stdout] 134 | fn use_declaration() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn function() {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `super_and_self` is never used
[INFO] [stdout]    --> src/j_modules.rs:191:4
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn super_and_self() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `private_function` is never used
[INFO] [stdout]  --> src/j_modules.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn private_function() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]   --> src/j_modules.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn function() {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `indirect_access` is never used
[INFO] [stdout]   --> src/j_modules.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn indirect_access() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `call_public_function_in_my_mod` is never used
[INFO] [stdout]   --> src/j_modules.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn call_public_function_in_my_mod() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_crate` is never used
[INFO] [stdout]   --> src/j_modules.rs:46:19
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub(crate) fn public_function_in_crate() {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `private_function` is never used
[INFO] [stdout]   --> src/j_modules.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn private_function() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]   --> src/j_modules.rs:24:16
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub fn function() {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_nested` is never used
[INFO] [stdout]   --> src/j_modules.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub(self) fn public_function_in_nested() { // the same as leaving them private
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_my_mod` is never used
[INFO] [stdout]   --> src/j_modules.rs:30:45
[INFO] [stdout]    |
[INFO] [stdout] 30 |         pub(in crate::j_modules::my_mod) fn public_function_in_my_mod() {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `public_function_in_super_mod` is never used
[INFO] [stdout]   --> src/j_modules.rs:34:23
[INFO] [stdout]    |
[INFO] [stdout] 34 |         pub(super) fn public_function_in_super_mod() {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]   --> src/j_modules.rs:51:16
[INFO] [stdout]    |
[INFO] [stdout] 51 |         pub fn function() {
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `restricted_function` is never used
[INFO] [stdout]   --> src/j_modules.rs:54:23
[INFO] [stdout]    |
[INFO] [stdout] 54 |         pub(crate) fn restricted_function() {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OpenBox` is never constructed
[INFO] [stdout]   --> src/j_modules.rs:96:16
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub struct OpenBox<T> {
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClosedBox` is never constructed
[INFO] [stdout]   --> src/j_modules.rs:99:16
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub struct ClosedBox<T> {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/j_modules.rs:104:16
[INFO] [stdout]     |
[INFO] [stdout] 103 |     impl<T> ClosedBox<T> {
[INFO] [stdout]     |     -------------------- associated function in this implementation
[INFO] [stdout] 104 |         pub fn new(c: T) -> ClosedBox<T> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:128:16
[INFO] [stdout]     |
[INFO] [stdout] 128 |         pub fn function() {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn function() {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn function() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `indirect_call` is never used
[INFO] [stdout]    --> src/j_modules.rs:177:12
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub fn indirect_call() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:172:16
[INFO] [stdout]     |
[INFO] [stdout] 172 |         pub fn function() {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> src/k_crates.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> src/l_cargo.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dependencies` is never used
[INFO] [stdout]   --> src/l_cargo.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn dependencies() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `conventions` is never used
[INFO] [stdout]   --> src/l_cargo.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn conventions() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testing` is never used
[INFO] [stdout]   --> src/l_cargo.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn testing() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/m_attributes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> src/m_attributes.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn intro() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dead_code` is never used
[INFO] [stdout]   --> src/m_attributes.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn dead_code() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cfg` is never used
[INFO] [stdout]   --> src/m_attributes.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn cfg() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/n_generics.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_functions` is never used
[INFO] [stdout]   --> src/n_generics.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn generics_functions() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_implementations` is never used
[INFO] [stdout]   --> src/n_generics.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn generics_implementations() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/n_generics.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     impl Val { // impl of `Val`
[INFO] [stdout]    |     -------- method in this implementation
[INFO] [stdout] 52 |         fn value(&self) -> &f64 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/j_modules.rs:104:16
[INFO] [stdout]     |
[INFO] [stdout] 103 |     impl<T> ClosedBox<T> {
[INFO] [stdout]     |     -------------------- associated function in this implementation
[INFO] [stdout] 104 |         pub fn new(c: T) -> ClosedBox<T> {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:128:16
[INFO] [stdout]     |
[INFO] [stdout] 128 |         pub fn function() {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn function() {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn function() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `indirect_call` is never used
[INFO] [stdout]    --> src/j_modules.rs:177:12
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub fn indirect_call() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `function` is never used
[INFO] [stdout]    --> src/j_modules.rs:172:16
[INFO] [stdout]     |
[INFO] [stdout] 172 |         pub fn function() {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> src/k_crates.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> src/l_cargo.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn intro() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dependencies` is never used
[INFO] [stdout]   --> src/l_cargo.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn dependencies() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `conventions` is never used
[INFO] [stdout]   --> src/l_cargo.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn conventions() {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testing` is never used
[INFO] [stdout]   --> src/l_cargo.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn testing() {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/m_attributes.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]  --> src/m_attributes.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn intro() {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dead_code` is never used
[INFO] [stdout]   --> src/m_attributes.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn dead_code() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cfg` is never used
[INFO] [stdout]   --> src/m_attributes.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn cfg() {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/n_generics.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_functions` is never used
[INFO] [stdout]   --> src/n_generics.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn generics_functions() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_implementations` is never used
[INFO] [stdout]   --> src/n_generics.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn generics_implementations() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/n_generics.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     impl Val { // impl of `Val`
[INFO] [stdout]    |     -------- method in this implementation
[INFO] [stdout] 52 |         fn value(&self) -> &f64 {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/n_generics.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     impl<T> GenVal<T> { // impl of `GenVal` for a generic type `T`
[INFO] [stdout]    |     ----------------- method in this implementation
[INFO] [stdout] 57 |         fn value(&self) -> &T {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_traits` is never used
[INFO] [stdout]   --> src/n_generics.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn generics_traits() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_bounds` is never used
[INFO] [stdout]   --> src/n_generics.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn generics_bounds() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_multiple_bounds` is never used
[INFO] [stdout]    --> src/n_generics.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn generics_multiple_bounds() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_where_clauses` is never used
[INFO] [stdout]    --> src/n_generics.rs:148:4
[INFO] [stdout]     |
[INFO] [stdout] 148 | fn generics_where_clauses() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_new_type_idiom` is never used
[INFO] [stdout]    --> src/n_generics.rs:184:4
[INFO] [stdout]     |
[INFO] [stdout] 184 | fn generics_new_type_idiom() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_days` is never used
[INFO] [stdout]    --> src/n_generics.rs:187:16
[INFO] [stdout]     |
[INFO] [stdout] 186 |     impl Years {
[INFO] [stdout]     |     ---------- method in this implementation
[INFO] [stdout] 187 |         pub fn to_days(&self) -> Days {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_years` is never used
[INFO] [stdout]    --> src/n_generics.rs:194:16
[INFO] [stdout]     |
[INFO] [stdout] 193 |     impl Days {
[INFO] [stdout]     |     --------- method in this implementation
[INFO] [stdout] 194 |         pub fn to_years(&self) -> Years {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_associated_items` is never used
[INFO] [stdout]    --> src/n_generics.rs:211:4
[INFO] [stdout]     |
[INFO] [stdout] 211 | fn generics_associated_items() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_phantom_type_params` is never used
[INFO] [stdout]    --> src/n_generics.rs:293:4
[INFO] [stdout]     |
[INFO] [stdout] 293 | fn generics_phantom_type_params() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]   --> src/o_scoping_rules.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn intro() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:489:25
[INFO] [stdout]     |
[INFO] [stdout] 489 |     struct Borrowed<'a>(&'a i32);
[INFO] [stdout]     |            --------     ^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Borrowed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:496:9
[INFO] [stdout]     |
[INFO] [stdout] 495 |     struct NamedBorrowed<'a> {
[INFO] [stdout]     |            ------------- fields in this struct
[INFO] [stdout] 496 |         x: &'a i32,
[INFO] [stdout]     |         ^
[INFO] [stdout] 497 |         y: &'a i32,
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NamedBorrowed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:505:13
[INFO] [stdout]     |
[INFO] [stdout] 505 |         Num(i32),
[INFO] [stdout]     |         --- ^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Either` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 505 -         Num(i32),
[INFO] [stdout] 505 +         Num(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:506:13
[INFO] [stdout]     |
[INFO] [stdout] 506 |         Ref(&'a i32),
[INFO] [stdout]     |         --- ^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Either` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 506 -         Ref(&'a i32),
[INFO] [stdout] 506 +         Ref(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:529:27
[INFO] [stdout]     |
[INFO] [stdout] 529 |     struct Borrowed<'a> { x: &'a i32 }
[INFO] [stdout]     |            --------       ^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Borrowed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:558:27
[INFO] [stdout]     |
[INFO] [stdout] 558 |     struct Ref<'a, T: 'a>(&'a T);
[INFO] [stdout]     |            ---            ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Ref` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/n_generics.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 56 |     impl<T> GenVal<T> { // impl of `GenVal` for a generic type `T`
[INFO] [stdout]    |     ----------------- method in this implementation
[INFO] [stdout] 57 |         fn value(&self) -> &T {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_traits` is never used
[INFO] [stdout]   --> src/n_generics.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn generics_traits() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_bounds` is never used
[INFO] [stdout]   --> src/n_generics.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn generics_bounds() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_multiple_bounds` is never used
[INFO] [stdout]    --> src/n_generics.rs:119:4
[INFO] [stdout]     |
[INFO] [stdout] 119 | fn generics_multiple_bounds() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_where_clauses` is never used
[INFO] [stdout]    --> src/n_generics.rs:148:4
[INFO] [stdout]     |
[INFO] [stdout] 148 | fn generics_where_clauses() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_new_type_idiom` is never used
[INFO] [stdout]    --> src/n_generics.rs:184:4
[INFO] [stdout]     |
[INFO] [stdout] 184 | fn generics_new_type_idiom() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_days` is never used
[INFO] [stdout]    --> src/n_generics.rs:187:16
[INFO] [stdout]     |
[INFO] [stdout] 186 |     impl Years {
[INFO] [stdout]     |     ---------- method in this implementation
[INFO] [stdout] 187 |         pub fn to_days(&self) -> Days {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_years` is never used
[INFO] [stdout]    --> src/n_generics.rs:194:16
[INFO] [stdout]     |
[INFO] [stdout] 193 |     impl Days {
[INFO] [stdout]     |     --------- method in this implementation
[INFO] [stdout] 194 |         pub fn to_years(&self) -> Years {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_associated_items` is never used
[INFO] [stdout]    --> src/n_generics.rs:211:4
[INFO] [stdout]     |
[INFO] [stdout] 211 | fn generics_associated_items() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generics_phantom_type_params` is never used
[INFO] [stdout]    --> src/n_generics.rs:293:4
[INFO] [stdout]     |
[INFO] [stdout] 293 | fn generics_phantom_type_params() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `intro` is never used
[INFO] [stdout]   --> src/o_scoping_rules.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn intro() {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:489:25
[INFO] [stdout]     |
[INFO] [stdout] 489 |     struct Borrowed<'a>(&'a i32);
[INFO] [stdout]     |            --------     ^^^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Borrowed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:496:9
[INFO] [stdout]     |
[INFO] [stdout] 495 |     struct NamedBorrowed<'a> {
[INFO] [stdout]     |            ------------- fields in this struct
[INFO] [stdout] 496 |         x: &'a i32,
[INFO] [stdout]     |         ^
[INFO] [stdout] 497 |         y: &'a i32,
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NamedBorrowed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:505:13
[INFO] [stdout]     |
[INFO] [stdout] 505 |         Num(i32),
[INFO] [stdout]     |         --- ^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Either` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 505 -         Num(i32),
[INFO] [stdout] 505 +         Num(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:506:13
[INFO] [stdout]     |
[INFO] [stdout] 506 |         Ref(&'a i32),
[INFO] [stdout]     |         --- ^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Either` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 506 -         Ref(&'a i32),
[INFO] [stdout] 506 +         Ref(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:529:27
[INFO] [stdout]     |
[INFO] [stdout] 529 |     struct Borrowed<'a> { x: &'a i32 }
[INFO] [stdout]     |            --------       ^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Borrowed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/o_scoping_rules.rs:558:27
[INFO] [stdout]     |
[INFO] [stdout] 558 |     struct Ref<'a, T: 'a>(&'a T);
[INFO] [stdout]     |            ---            ^^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `Ref` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/g_expressions.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         2 * x;
[INFO] [stdout]    |         ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let _ = 2 * x;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/g_expressions.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         2 * x;
[INFO] [stdout]    |         ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let _ = 2 * x;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "9d0d6a2e71be2e9761eaffe6e2e8d2cfe3ab7117e09c8332079b25614e1c730c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d0d6a2e71be2e9761eaffe6e2e8d2cfe3ab7117e09c8332079b25614e1c730c", kill_on_drop: false }`
[INFO] [stdout] 9d0d6a2e71be2e9761eaffe6e2e8d2cfe3ab7117e09c8332079b25614e1c730c
