[INFO] cloning repository https://github.com/xklf2014/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xklf2014/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxklf2014%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxklf2014%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 478610dc516ec99a20ac60411739f21a022ec792
[INFO] checking xklf2014/rust_study against try#5d9095c550fcec9e458ce8d6b0c04a217641db66 for pr-77153
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxklf2014%2Frust_study" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xklf2014/rust_study on toolchain 5d9095c550fcec9e458ce8d6b0c04a217641db66
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d9095c550fcec9e458ce8d6b0c04a217641db66" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xklf2014/rust_study
[INFO] finished tweaking git repo https://github.com/xklf2014/rust_study
[INFO] tweaked toml for git repo https://github.com/xklf2014/rust_study written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/xklf2014/rust_study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d9095c550fcec9e458ce8d6b0c04a217641db66" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ferris-says v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+5d9095c550fcec9e458ce8d6b0c04a217641db66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0d448d3008e407959bfaaf7b41c5967711ec8821a2a87f1d493f5d33f62ac999
[INFO] running `Command { std: "docker" "start" "-a" "0d448d3008e407959bfaaf7b41c5967711ec8821a2a87f1d493f5d33f62ac999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d448d3008e407959bfaaf7b41c5967711ec8821a2a87f1d493f5d33f62ac999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d448d3008e407959bfaaf7b41c5967711ec8821a2a87f1d493f5d33f62ac999", kill_on_drop: false }`
[INFO] [stdout] 0d448d3008e407959bfaaf7b41c5967711ec8821a2a87f1d493f5d33f62ac999
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+5d9095c550fcec9e458ce8d6b0c04a217641db66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b87dc281343eaa56fa9a0241c52be256d7d6ccc22ff1decc666743c0c3bbf516
[INFO] running `Command { std: "docker" "start" "-a" "b87dc281343eaa56fa9a0241c52be256d7d6ccc22ff1decc666743c0c3bbf516", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking ferris-says v0.1.2
[INFO] [stderr]     Checking MyFirstRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/basic_test.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     /**
[INFO] [stdout] 58 | |     十进制(Decimal)    98_222
[INFO] [stdout] 59 | |     十六进制(Hex)    0xff
[INFO] [stdout] 60 | |     八进制(Octal)    0o77
[INFO] [stdout] 61 | |     二进制(Binary)    0b1111_0000
[INFO] [stdout] 62 | |     字节(Byte) (u8 only)    b'A'
[INFO] [stdout] 63 | |     */
[INFO] [stdout]    | |______^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ferris_says::say`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ferris_says::say;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufWriter`, `stdout`
[INFO] [stdout]  --> src/main.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{stdout, BufWriter};
[INFO] [stdout]   |               ^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Formatter`
[INFO] [stdout]  --> src/conversion.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fmt::Formatter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/flow_of_control.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         'inner: loop {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/basic_test.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     /**
[INFO] [stdout] 58 | |     十进制(Decimal)    98_222
[INFO] [stdout] 59 | |     十六进制(Hex)    0xff
[INFO] [stdout] 60 | |     八进制(Octal)    0o77
[INFO] [stdout] 61 | |     二进制(Binary)    0b1111_0000
[INFO] [stdout] 62 | |     字节(Byte) (u8 only)    b'A'
[INFO] [stdout] 63 | |     */
[INFO] [stdout]    | |______^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ferris_says::say`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ferris_says::say;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufWriter`, `stdout`
[INFO] [stdout]  --> src/main.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{stdout, BufWriter};
[INFO] [stdout]   |               ^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Formatter`
[INFO] [stdout]  --> src/conversion.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fmt::Formatter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/flow_of_control.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         'inner: loop {
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ys`
[INFO] [stdout]   --> src/slicesArrays.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let ys: [i32; 500] = [0; 500];
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ys`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `un_used_variable`
[INFO] [stdout]   --> src/variable_binding.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let un_used_variable = 3u32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_un_used_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `noisy_unused_variable`
[INFO] [stdout]   --> src/variable_binding.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let noisy_unused_variable = 2u32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_noisy_unused_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `long_lived_binding`
[INFO] [stdout]   --> src/variable_binding.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let long_lived_binding = 1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_long_lived_binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ys`
[INFO] [stdout]   --> src/slicesArrays.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let ys: [i32; 500] = [0; 500];
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_ys`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `un_used_variable`
[INFO] [stdout]   --> src/variable_binding.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let un_used_variable = 3u32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_un_used_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `noisy_unused_variable`
[INFO] [stdout]   --> src/variable_binding.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let noisy_unused_variable = 2u32;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_noisy_unused_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `long_lived_binding`
[INFO] [stdout]   --> src/variable_binding.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let long_lived_binding = 1;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_long_lived_binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pTuple`
[INFO] [stdout]  --> src/tuples_test.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn pTuple() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]   --> src/tuples_test.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn reverse(pair: (i32, bool)) -> (bool, i32) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `basicTest`
[INFO] [stdout]  --> src/basic_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn basicTest(){
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `analyze_slice`
[INFO] [stdout]  --> src/slicesArrays.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn analyze_slice(slice: &[i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sclies`
[INFO] [stdout]  --> src/slicesArrays.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn sclies() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Unit`
[INFO] [stdout]   --> src/custom_types.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Unit;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]   --> src/custom_types.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Pair(i32, f32);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `struct_test`
[INFO] [stdout]   --> src/custom_types.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn struct_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `WebEvent`
[INFO] [stdout]   --> src/custom_types.rs:62:10
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub enum WebEvent {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pTuple`
[INFO] [stdout]  --> src/tuples_test.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn pTuple() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inspect`
[INFO] [stdout]   --> src/custom_types.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn inspect(event: WebEvent) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]   --> src/tuples_test.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn reverse(pair: (i32, bool)) -> (bool, i32) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `basicTest`
[INFO] [stdout]  --> src/basic_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn basicTest(){
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `analyze_slice`
[INFO] [stdout]  --> src/slicesArrays.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn analyze_slice(slice: &[i32]) {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sclies`
[INFO] [stdout]  --> src/slicesArrays.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn sclies() {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Unit`
[INFO] [stdout]   --> src/custom_types.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Unit;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pair`
[INFO] [stdout]   --> src/custom_types.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Pair(i32, f32);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_test`
[INFO] [stdout]   --> src/custom_types.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn enum_test() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `struct_test`
[INFO] [stdout]   --> src/custom_types.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn struct_test() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `WebEvent`
[INFO] [stdout]   --> src/custom_types.rs:62:10
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub enum WebEvent {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inspect`
[INFO] [stdout]   --> src/custom_types.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn inspect(event: WebEvent) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `enum_test`
[INFO] [stdout]   --> src/custom_types.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub fn enum_test() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Add`
[INFO] [stdout]   --> src/custom_types.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Subtract`
[INFO] [stdout]   --> src/custom_types.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     Subtract,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Operations`
[INFO] [stdout]    --> src/custom_types.rs:102:1
[INFO] [stdout]     |
[INFO] [stdout] 102 | type Operations = VeryVerboseEnumOfThingsToDoWithNumbers;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]    --> src/custom_types.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_alias`
[INFO] [stdout]    --> src/custom_types.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn test_alias() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Status`
[INFO] [stdout]    --> src/custom_types.rs:121:6
[INFO] [stdout]     |
[INFO] [stdout] 121 | enum Status {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Work`
[INFO] [stdout]    --> src/custom_types.rs:126:6
[INFO] [stdout]     |
[INFO] [stdout] 126 | enum Work {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Number`
[INFO] [stdout]    --> src/custom_types.rs:147:6
[INFO] [stdout]     |
[INFO] [stdout] 147 | enum Number {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Color`
[INFO] [stdout]    --> src/custom_types.rs:153:6
[INFO] [stdout]     |
[INFO] [stdout] 153 | enum Color {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Add`
[INFO] [stdout]   --> src/custom_types.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     Add,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `c_like_test`
[INFO] [stdout]    --> src/custom_types.rs:159:8
[INFO] [stdout]     |
[INFO] [stdout] 159 | pub fn c_like_test() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `List`
[INFO] [stdout]    --> src/custom_types.rs:168:6
[INFO] [stdout]     |
[INFO] [stdout] 168 | enum List {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Subtract`
[INFO] [stdout]   --> src/custom_types.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     Subtract,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/custom_types.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn new() -> List {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `prepend`
[INFO] [stdout]    --> src/custom_types.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn prepend(self, elem: u32) -> List {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]    --> src/custom_types.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 |     fn len(&self) -> u32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stringify`
[INFO] [stdout]    --> src/custom_types.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 |     fn stringify(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `linked_list_test`
[INFO] [stdout]    --> src/custom_types.rs:201:8
[INFO] [stdout]     |
[INFO] [stdout] 201 | pub fn linked_list_test() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `LANGUAGE`
[INFO] [stdout]    --> src/custom_types.rs:211:1
[INFO] [stdout]     |
[INFO] [stdout] 211 | static LANGUAGE: &str = "RUST";
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `THRESHOLD`
[INFO] [stdout]    --> src/custom_types.rs:212:1
[INFO] [stdout]     |
[INFO] [stdout] 212 | const THRESHOLD: i32 = 10;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Operations`
[INFO] [stdout]    --> src/custom_types.rs:102:1
[INFO] [stdout]     |
[INFO] [stdout] 102 | type Operations = VeryVerboseEnumOfThingsToDoWithNumbers;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_big`
[INFO] [stdout]    --> src/custom_types.rs:214:4
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn is_big(n: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `constant_test`
[INFO] [stdout]    --> src/custom_types.rs:218:8
[INFO] [stdout]     |
[INFO] [stdout] 218 | pub fn constant_test() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_let`
[INFO] [stdout]  --> src/variable_binding.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test_let() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_mutability`
[INFO] [stdout]   --> src/variable_binding.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn test_mutability() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]    --> src/custom_types.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn run(&self, x: i32, y: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_scope_and_shadowing`
[INFO] [stdout]   --> src/variable_binding.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn test_scope_and_shadowing() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_alias`
[INFO] [stdout]    --> src/custom_types.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn test_alias() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_declare_first`
[INFO] [stdout]   --> src/variable_binding.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn test_declare_first() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_freezing`
[INFO] [stdout]   --> src/variable_binding.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn test_freezing(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_casting`
[INFO] [stdout]  --> src/types.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test_casting() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Status`
[INFO] [stdout]    --> src/custom_types.rs:121:6
[INFO] [stdout]     |
[INFO] [stdout] 121 | enum Status {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_literals`
[INFO] [stdout]   --> src/types.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn test_literals() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Work`
[INFO] [stdout]    --> src/custom_types.rs:126:6
[INFO] [stdout]     |
[INFO] [stdout] 126 | enum Work {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_inference`
[INFO] [stdout]   --> src/types.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn test_inference() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `NanoSecond`
[INFO] [stdout]   --> src/types.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | type NanoSecond = u64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Number`
[INFO] [stdout]    --> src/custom_types.rs:147:6
[INFO] [stdout]     |
[INFO] [stdout] 147 | enum Number {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Inch`
[INFO] [stdout]   --> src/types.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | type Inch = u64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `u64_t`
[INFO] [stdout]   --> src/types.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | type u64_t = u64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_aliasing`
[INFO] [stdout]   --> src/types.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn test_aliasing() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Color`
[INFO] [stdout]    --> src/custom_types.rs:153:6
[INFO] [stdout]     |
[INFO] [stdout] 153 | enum Color {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_from`
[INFO] [stdout]   --> src/conversion.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn test_from() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `c_like_test`
[INFO] [stdout]    --> src/custom_types.rs:159:8
[INFO] [stdout]     |
[INFO] [stdout] 159 | pub fn c_like_test() {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_into`
[INFO] [stdout]   --> src/conversion.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn test_into() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_try_from_and_into`
[INFO] [stdout]   --> src/conversion.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn test_try_from_and_into() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_convering_to_string`
[INFO] [stdout]   --> src/conversion.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn test_convering_to_string() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `List`
[INFO] [stdout]    --> src/custom_types.rs:168:6
[INFO] [stdout]     |
[INFO] [stdout] 168 | enum List {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/custom_types.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn new() -> List {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `prepend`
[INFO] [stdout]    --> src/custom_types.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn prepend(self, elem: u32) -> List {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]    --> src/custom_types.rs:182:8
[INFO] [stdout]     |
[INFO] [stdout] 182 |     fn len(&self) -> u32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stringify`
[INFO] [stdout]    --> src/custom_types.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 |     fn stringify(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `linked_list_test`
[INFO] [stdout]    --> src/custom_types.rs:201:8
[INFO] [stdout]     |
[INFO] [stdout] 201 | pub fn linked_list_test() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `LANGUAGE`
[INFO] [stdout]    --> src/custom_types.rs:211:1
[INFO] [stdout]     |
[INFO] [stdout] 211 | static LANGUAGE: &str = "RUST";
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `THRESHOLD`
[INFO] [stdout]    --> src/custom_types.rs:212:1
[INFO] [stdout]     |
[INFO] [stdout] 212 | const THRESHOLD: i32 = 10;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_big`
[INFO] [stdout]    --> src/custom_types.rs:214:4
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn is_big(n: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `constant_test`
[INFO] [stdout]    --> src/custom_types.rs:218:8
[INFO] [stdout]     |
[INFO] [stdout] 218 | pub fn constant_test() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_let`
[INFO] [stdout]  --> src/variable_binding.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test_let() {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_mutability`
[INFO] [stdout]   --> src/variable_binding.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn test_mutability() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_scope_and_shadowing`
[INFO] [stdout]   --> src/variable_binding.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn test_scope_and_shadowing() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_declare_first`
[INFO] [stdout]   --> src/variable_binding.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn test_declare_first() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_freezing`
[INFO] [stdout]   --> src/variable_binding.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn test_freezing(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_casting`
[INFO] [stdout]  --> src/types.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test_casting() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_literals`
[INFO] [stdout]   --> src/types.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn test_literals() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_inference`
[INFO] [stdout]   --> src/types.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn test_inference() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `NanoSecond`
[INFO] [stdout]   --> src/types.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | type NanoSecond = u64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Inch`
[INFO] [stdout]   --> src/types.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | type Inch = u64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `u64_t`
[INFO] [stdout]   --> src/types.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | type u64_t = u64;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_aliasing`
[INFO] [stdout]   --> src/types.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn test_aliasing() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_from`
[INFO] [stdout]   --> src/conversion.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn test_from() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_into`
[INFO] [stdout]   --> src/conversion.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn test_into() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_try_from_and_into`
[INFO] [stdout]   --> src/conversion.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn test_try_from_and_into() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_convering_to_string`
[INFO] [stdout]   --> src/conversion.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn test_convering_to_string() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_parsing_string`
[INFO] [stdout]   --> src/conversion.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn test_parsing_string(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_expressions`
[INFO] [stdout]  --> src/expressions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test_expressions(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_if_else`
[INFO] [stdout]  --> src/flow_of_control.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test_if_else() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_loop`
[INFO] [stdout]   --> src/flow_of_control.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn test_loop() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_nesting_and_lables`
[INFO] [stdout]   --> src/flow_of_control.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn test_nesting_and_lables() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `MyFirstRust` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `my_first_rust`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pTuple` should have a snake case name
[INFO] [stdout]  --> src/tuples_test.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn pTuple() {
[INFO] [stdout]   |        ^^^^^^ help: convert the identifier to snake case: `p_tuple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `basicTest` should have a snake case name
[INFO] [stdout]  --> src/basic_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn basicTest(){
[INFO] [stdout]   |        ^^^^^^^^^ help: convert the identifier to snake case: `basic_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/expressions.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         2 * x;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_parsing_string`
[INFO] [stdout]   --> src/conversion.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn test_parsing_string(){
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_expressions`
[INFO] [stdout]  --> src/expressions.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test_expressions(){
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_if_else`
[INFO] [stdout]  --> src/flow_of_control.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn test_if_else() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_loop`
[INFO] [stdout]   --> src/flow_of_control.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn test_loop() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_nesting_and_lables`
[INFO] [stdout]   --> src/flow_of_control.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn test_nesting_and_lables() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `MyFirstRust` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `my_first_rust`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pTuple` should have a snake case name
[INFO] [stdout]  --> src/tuples_test.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn pTuple() {
[INFO] [stdout]   |        ^^^^^^ help: convert the identifier to snake case: `p_tuple`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `basicTest` should have a snake case name
[INFO] [stdout]  --> src/basic_test.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn basicTest(){
[INFO] [stdout]   |        ^^^^^^^^^ help: convert the identifier to snake case: `basic_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]   --> src/expressions.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         2 * x;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 66 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 66 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.62s
[INFO] running `Command { std: "docker" "inspect" "b87dc281343eaa56fa9a0241c52be256d7d6ccc22ff1decc666743c0c3bbf516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b87dc281343eaa56fa9a0241c52be256d7d6ccc22ff1decc666743c0c3bbf516", kill_on_drop: false }`
[INFO] [stdout] b87dc281343eaa56fa9a0241c52be256d7d6ccc22ff1decc666743c0c3bbf516