[INFO] cloning repository https://github.com/Oluwanifemiiii/CSC_305
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Oluwanifemiiii/CSC_305" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOluwanifemiiii%2FCSC_305", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOluwanifemiiii%2FCSC_305'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c947d71774f4d537dab381ef13a7a162a992a210
[INFO] linting Oluwanifemiiii/CSC_305 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOluwanifemiiii%2FCSC_305" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Oluwanifemiiii/CSC_305
[INFO] finished tweaking git repo https://github.com/Oluwanifemiiii/CSC_305
[INFO] tweaked toml for git repo https://github.com/Oluwanifemiiii/CSC_305 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Oluwanifemiiii/CSC_305 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Oluwanifemiiii/CSC_305 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" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4b8dac2ac992af3ded6822d6349949654852548618060ecd02883b8bd31adc4
[INFO] running `Command { std: "docker" "start" "-a" "a4b8dac2ac992af3ded6822d6349949654852548618060ecd02883b8bd31adc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4b8dac2ac992af3ded6822d6349949654852548618060ecd02883b8bd31adc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4b8dac2ac992af3ded6822d6349949654852548618060ecd02883b8bd31adc4", kill_on_drop: false }`
[INFO] [stdout] a4b8dac2ac992af3ded6822d6349949654852548618060ecd02883b8bd31adc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0419d98e677965e8a3fb1548e17a31b2316840ca8b5a5fc35be9193459c8c526
[INFO] running `Command { std: "docker" "start" "-a" "0419d98e677965e8a3fb1548e17a31b2316840ca8b5a5fc35be9193459c8c526", kill_on_drop: false }`
[INFO] [stderr]     Checking hello_world2_lib v0.1.0 (/opt/rustwide/workdir/hello_world2_lib)
[INFO] [stderr]     Checking hello_world2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: empty line after doc comment
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | / ///Alternatively, load them in one line
[INFO] [stdout] 11 | |
[INFO] [stdout]    | |_^
[INFO] [stdout] 12 |   extern crate hello_world2_lib;
[INFO] [stdout]    |   ----------------------------- the comment documents this extern crate
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
[INFO] [stdout]    = note: `#[warn(clippy::empty_line_after_doc_comments)]` on by default
[INFO] [stdout]    = help: if the empty line is unintentional, remove it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `english`, `french`, and `spanish`
[INFO] [stdout]   --> src/main.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 | use greetings::{english, spanish, french};
[INFO] [stdout]    |                 ^^^^^^^  ^^^^^^^  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty line after doc comment
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | / ///Alternatively, load them in one line
[INFO] [stdout] 11 | |
[INFO] [stdout]    | |_^
[INFO] [stdout] 12 |   extern crate hello_world2_lib;
[INFO] [stdout]    |   ----------------------------- the comment documents this extern crate
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
[INFO] [stdout]    = note: `#[warn(clippy::empty_line_after_doc_comments)]` on by default
[INFO] [stdout]    = help: if the empty line is unintentional, remove it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `english`, `french`, and `spanish`
[INFO] [stdout]   --> src/main.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 | use greetings::{english, spanish, french};
[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 variable: `logical`
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/scalar.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     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: `a_float`
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/scalar.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a_float: f64 = 1.0;  // Regular annotation
[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/how_you_hold_data_for_operations/primitives/scalar.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let an_integer   = 5i32; // Suffix annotation
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_float`
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/scalar.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     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/how_you_hold_data_for_operations/primitives/scalar.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     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: variable `inferred_type` is assigned to, but never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut inferred_type = 12; // Type i64 is inferred from another line.
[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/how_you_hold_data_for_operations/primitives/scalar.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut mutable = 12; // Mutable `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_mutable` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutable`
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mutable = true;
[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/how_you_hold_data_for_operations/primitives/scalar.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     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/how_you_hold_data_for_operations/primitives/scalar.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     mutable = 21;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `default_greeting` is never used
[INFO] [stdout]  --> src/greetings/spanish.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn default_greeting() -> String {
[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 `default_greeting` is never used
[INFO] [stdout]  --> src/greetings/french.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn default_greeting() -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `default_greeting` is never used
[INFO] [stdout]  --> src/greetings/english.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn default_greeting() -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/compound.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn reverse(pair: (i32, bool)) -> (bool, i32) {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Matrix(f32, f32, f32, f32);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `analyze_slice` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn analyze_slice(slice: &[i32]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiplier` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn multiplier(arr: &[f64]) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main_iii` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn main_iii() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/scalar.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ergo` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn ergo() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]  --> src/greetings/spanish.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let message = String::from("Hola");
[INFO] [stdout]   |     ----------------------------------- unnecessary `let` binding
[INFO] [stdout] 3 |     message
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]   = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]   |
[INFO] [stdout] 2 ~     
[INFO] [stdout] 3 ~     String::from("Hola")
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]  --> src/greetings/french.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let message = String::from("Alo");
[INFO] [stdout]   |     ---------------------------------- unnecessary `let` binding
[INFO] [stdout] 3 |     message
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]   |
[INFO] [stdout] 2 ~     
[INFO] [stdout] 3 ~     String::from("Alo")
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]  --> src/greetings/english.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let message = String::from("Hi!");
[INFO] [stdout]   |     ---------------------------------- unnecessary `let` binding
[INFO] [stdout] 3 |     message
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]   |
[INFO] [stdout] 2 ~     
[INFO] [stdout] 3 ~     String::from("Hi!")
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logical`
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/scalar.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     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: `a_float`
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/scalar.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let a_float: f64 = 1.0;  // Regular annotation
[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/how_you_hold_data_for_operations/primitives/scalar.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let an_integer   = 5i32; // Suffix annotation
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_float`
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/scalar.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     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/how_you_hold_data_for_operations/primitives/scalar.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     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: variable `inferred_type` is assigned to, but never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut inferred_type = 12; // Type i64 is inferred from another line.
[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/how_you_hold_data_for_operations/primitives/scalar.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut mutable = 12; // Mutable `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_mutable` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutable`
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mutable = true;
[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/how_you_hold_data_for_operations/primitives/scalar.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     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/how_you_hold_data_for_operations/primitives/scalar.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     mutable = 21;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:36:42
[INFO] [stdout]    |
[INFO] [stdout] 36 |         println!("true AND false is {}", true && false);
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^ help: try: `false`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:37:41
[INFO] [stdout]    |
[INFO] [stdout] 37 |         println!("true OR false is {}", true || false);
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^ help: try: `true`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:38:36
[INFO] [stdout]    |
[INFO] [stdout] 38 |         println!("NOT true is {}", !true);
[INFO] [stdout]    |                                    ^^^^^ help: try: `false`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: re-implementing `PartialEq::ne` is unnecessary
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:181:5
[INFO] [stdout]     |
[INFO] [stdout] 181 |     fn ne(&self, other: &Self) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_ne_impl
[INFO] [stdout]     = note: `#[warn(clippy::partialeq_ne_impl)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `default_greeting` is never used
[INFO] [stdout]  --> src/greetings/spanish.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn default_greeting() -> String {
[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 `default_greeting` is never used
[INFO] [stdout]  --> src/greetings/french.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn default_greeting() -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `default_greeting` is never used
[INFO] [stdout]  --> src/greetings/english.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn default_greeting() -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/compound.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn reverse(pair: (i32, bool)) -> (bool, i32) {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Matrix(f32, f32, f32, f32);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `analyze_slice` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn analyze_slice(slice: &[i32]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiplier` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn multiplier(arr: &[f64]) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main_iii` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/compound.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn main_iii() {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/how_you_hold_data_for_operations/primitives/scalar.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ergo` is never used
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn ergo() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:204:20
[INFO] [stdout]     |
[INFO] [stdout] 204 |           let name = match parts.next() {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 205 | |             Some(val) => val,
[INFO] [stdout] 206 | |             None => "",
[INFO] [stdout] 207 | |         };
[INFO] [stdout]     | |_________^ help: replace it with: `parts.next().unwrap_or_default()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout]     = note: `#[warn(clippy::manual_unwrap_or_default)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:251:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |         self.radius as i32
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ help: try: `self.radius`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: re-implementing `PartialEq::ne` is unnecessary
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:277:5
[INFO] [stdout]     |
[INFO] [stdout] 277 |     fn ne(&self, other: &Self) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_ne_impl
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]  --> src/greetings/spanish.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let message = String::from("Hola");
[INFO] [stdout]   |     ----------------------------------- unnecessary `let` binding
[INFO] [stdout] 3 |     message
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]   = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]   |
[INFO] [stdout] 2 ~     
[INFO] [stdout] 3 ~     String::from("Hola")
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:296:20
[INFO] [stdout]     |
[INFO] [stdout] 296 |           let name = match parts.next() {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 297 | |             Some(val) => val,
[INFO] [stdout] 298 | |             None => "",
[INFO] [stdout] 299 | |         };
[INFO] [stdout]     | |_________^ help: replace it with: `parts.next().unwrap_or_default()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]  --> src/greetings/french.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let message = String::from("Alo");
[INFO] [stdout]   |     ---------------------------------- unnecessary `let` binding
[INFO] [stdout] 3 |     message
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]   |
[INFO] [stdout] 2 ~     
[INFO] [stdout] 3 ~     String::from("Alo")
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]  --> src/greetings/english.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let message = String::from("Hi!");
[INFO] [stdout]   |     ---------------------------------- unnecessary `let` binding
[INFO] [stdout] 3 |     message
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]   |
[INFO] [stdout] 2 ~     
[INFO] [stdout] 3 ~     String::from("Hi!")
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: re-implementing `PartialEq::ne` is unnecessary
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:376:5
[INFO] [stdout]     |
[INFO] [stdout] 376 |     fn ne(&self, other: &Self) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_ne_impl
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:399:20
[INFO] [stdout]     |
[INFO] [stdout] 399 |           let name = match parts.next() {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 400 | |             Some(val) => val,
[INFO] [stdout] 401 | |             None => "",
[INFO] [stdout] 402 | |         };
[INFO] [stdout]     | |_________^ help: replace it with: `parts.next().unwrap_or_default()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:36:42
[INFO] [stdout]    |
[INFO] [stdout] 36 |         println!("true AND false is {}", true && false);
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^ help: try: `false`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:37:41
[INFO] [stdout]    |
[INFO] [stdout] 37 |         println!("true OR false is {}", true || false);
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^ help: try: `true`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/how_you_hold_data_for_operations/primitives/scalar.rs:38:36
[INFO] [stdout]    |
[INFO] [stdout] 38 |         println!("NOT true is {}", !true);
[INFO] [stdout]    |                                    ^^^^^ help: try: `false`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: re-implementing `PartialEq::ne` is unnecessary
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:181:5
[INFO] [stdout]     |
[INFO] [stdout] 181 |     fn ne(&self, other: &Self) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_ne_impl
[INFO] [stdout]     = note: `#[warn(clippy::partialeq_ne_impl)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:204:20
[INFO] [stdout]     |
[INFO] [stdout] 204 |           let name = match parts.next() {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 205 | |             Some(val) => val,
[INFO] [stdout] 206 | |             None => "",
[INFO] [stdout] 207 | |         };
[INFO] [stdout]     | |_________^ help: replace it with: `parts.next().unwrap_or_default()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout]     = note: `#[warn(clippy::manual_unwrap_or_default)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:251:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |         self.radius as i32
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ help: try: `self.radius`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: re-implementing `PartialEq::ne` is unnecessary
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:277:5
[INFO] [stdout]     |
[INFO] [stdout] 277 |     fn ne(&self, other: &Self) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_ne_impl
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:296:20
[INFO] [stdout]     |
[INFO] [stdout] 296 |           let name = match parts.next() {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 297 | |             Some(val) => val,
[INFO] [stdout] 298 | |             None => "",
[INFO] [stdout] 299 | |         };
[INFO] [stdout]     | |_________^ help: replace it with: `parts.next().unwrap_or_default()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: re-implementing `PartialEq::ne` is unnecessary
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:376:5
[INFO] [stdout]     |
[INFO] [stdout] 376 |     fn ne(&self, other: &Self) -> bool {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_ne_impl
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match can be simplified with `.unwrap_or_default()`
[INFO] [stdout]    --> src/how_you_hold_data_for_operations/derived/user_defined.rs:399:20
[INFO] [stdout]     |
[INFO] [stdout] 399 |           let name = match parts.next() {
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 400 | |             Some(val) => val,
[INFO] [stdout] 401 | |             None => "",
[INFO] [stdout] 402 | |         };
[INFO] [stdout]     | |_________^ help: replace it with: `parts.next().unwrap_or_default()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or_default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "0419d98e677965e8a3fb1548e17a31b2316840ca8b5a5fc35be9193459c8c526", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0419d98e677965e8a3fb1548e17a31b2316840ca8b5a5fc35be9193459c8c526", kill_on_drop: false }`
[INFO] [stdout] 0419d98e677965e8a3fb1548e17a31b2316840ca8b5a5fc35be9193459c8c526