[INFO] cloning repository https://github.com/ferran1/ex-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ferran1/ex-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fferran1%2Fex-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fferran1%2Fex-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 66e7ef7ee59767150348ab69a2da5eff0feccda9 [INFO] checking ferran1/ex-rust against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fferran1%2Fex-rust" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ferran1/ex-rust on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ferran1/ex-rust [INFO] finished tweaking git repo https://github.com/ferran1/ex-rust [INFO] tweaked toml for git repo https://github.com/ferran1/ex-rust written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/ferran1/ex-rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9cbb8b758bdb5113f8465f96a52f864b59ab70784165525a2fc9a5c7b0484167 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "9cbb8b758bdb5113f8465f96a52f864b59ab70784165525a2fc9a5c7b0484167", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9cbb8b758bdb5113f8465f96a52f864b59ab70784165525a2fc9a5c7b0484167", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9cbb8b758bdb5113f8465f96a52f864b59ab70784165525a2fc9a5c7b0484167", kill_on_drop: false }` [INFO] [stdout] 9cbb8b758bdb5113f8465f96a52f864b59ab70784165525a2fc9a5c7b0484167 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b2e1d272f569b5957878ea43d73217a31050155d7016fa63519389d7ef211b05 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "b2e1d272f569b5957878ea43d73217a31050155d7016fa63519389d7ef211b05", kill_on_drop: false }` [INFO] [stderr] Checking ex-rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `home_address` [INFO] [stdout] --> src/bin/enums.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let home_address = IPAddressKind::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_home_address` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/bin/enums.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let loopback = IPAddr::V6(String::from("::1")); // Call the type alias "IPAddr" of the [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `call` [INFO] [stdout] --> src/bin/enums.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | fn call(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/bin/match.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | 1...5 => println!("It's one from 1 to 5"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `third_value` [INFO] [stdout] --> src/bin/vectors.rs:13:14 [INFO] [stdout] | [INFO] [stdout] 13 | Some(third_value) => println!("It's purple!"), [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_third_value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/bin/shadowing.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let x = x + 5; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `third_value` [INFO] [stdout] --> src/bin/vectors.rs:13:14 [INFO] [stdout] | [INFO] [stdout] 13 | Some(third_value) => println!("It's purple!"), [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_third_value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/bin/shadowing.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | let x = x + 5; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/bin/match.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | / if let number = 1 { [INFO] [stdout] 25 | | println!("The number is 1!"); [INFO] [stdout] 26 | | } else { [INFO] [stdout] 27 | | println!("The number isn't 1..") [INFO] [stdout] 28 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `number` [INFO] [stdout] --> src/bin/match.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 24 | if let number = 1 { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/primitives_constants.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let a = 30; // i = signed integer [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/bin/primitives_constants.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let mut b : u32 = 35; // u = unsigned integer, mut = mutable [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/bin/primitives_constants.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let c = 2.0; // Default type = f64 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/bin/primitives_constants.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let d: f32 = 20.5; // Variables can always be type annotated [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/bin/primitives_constants.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let e = true; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/bin/primitives_constants.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let f = 'F'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_str` [INFO] [stdout] --> src/bin/primitives_constants.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | let my_str = "This is a &str"; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_string` [INFO] [stdout] --> src/bin/primitives_constants.rs:46:9 [INFO] [stdout] | [INFO] [stdout] 46 | let my_string = String::from("This is a String"); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/bin/primitives_constants.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let sum = 5 + 10; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `difference` [INFO] [stdout] --> src/bin/primitives_constants.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let difference = 95.5 - 4.3; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difference` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `product` [INFO] [stdout] --> src/bin/primitives_constants.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let product = 4 * 30; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_product` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `quotient` [INFO] [stdout] --> src/bin/primitives_constants.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | let quotient = 56.7 / 32.2; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_quotient` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `remainder` [INFO] [stdout] --> src/bin/primitives_constants.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | let remainder = 43 % 5; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/bin/primitives_constants.rs:84:13 [INFO] [stdout] | [INFO] [stdout] 84 | let (x, y, z) = tup; // Deconstruct tuple to create bindings [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> src/bin/primitives_constants.rs:84:16 [INFO] [stdout] | [INFO] [stdout] 84 | let (x, y, z) = tup; // Deconstruct tuple to create bindings [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/primitives_constants.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let mut b : u32 = 35; // u = unsigned integer, mut = mutable [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/references_borrowing.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let a = y; /* Ownership is being "moved" to the variable a because the value [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/bin/references_borrowing.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let d = &c; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/bin/references_borrowing.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let e = &c; // variables d and e borrow from the variable c, [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/references_borrowing.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let mut c = String::from("Hello world!"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home_address` [INFO] [stdout] --> src/bin/enums.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | let home_address = IPAddressKind::V4(127, 0, 0, 1); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_home_address` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/bin/enums.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | let loopback = IPAddr::V6(String::from("::1")); // Call the type alias "IPAddr" of the [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/primitives_constants.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | let a = 30; // i = signed integer [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/bin/primitives_constants.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let mut b : u32 = 35; // u = unsigned integer, mut = mutable [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/bin/primitives_constants.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let c = 2.0; // Default type = f64 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/bin/primitives_constants.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let d: f32 = 20.5; // Variables can always be type annotated [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/bin/primitives_constants.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let e = true; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/bin/primitives_constants.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let f = 'F'; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_str` [INFO] [stdout] --> src/bin/primitives_constants.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | let my_str = "This is a &str"; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `my_string` [INFO] [stdout] --> src/bin/primitives_constants.rs:46:9 [INFO] [stdout] | [INFO] [stdout] 46 | let my_string = String::from("This is a String"); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_my_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sum` [INFO] [stdout] --> src/bin/primitives_constants.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let sum = 5 + 10; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sum` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `difference` [INFO] [stdout] --> src/bin/primitives_constants.rs:52:9 [INFO] [stdout] | [INFO] [stdout] 52 | let difference = 95.5 - 4.3; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difference` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `product` [INFO] [stdout] --> src/bin/primitives_constants.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let product = 4 * 30; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_product` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `quotient` [INFO] [stdout] --> src/bin/primitives_constants.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | let quotient = 56.7 / 32.2; [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_quotient` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `remainder` [INFO] [stdout] --> src/bin/primitives_constants.rs:58:9 [INFO] [stdout] | [INFO] [stdout] 58 | let remainder = 43 % 5; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remainder` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/bin/primitives_constants.rs:84:13 [INFO] [stdout] | [INFO] [stdout] 84 | let (x, y, z) = tup; // Deconstruct tuple to create bindings [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> src/bin/primitives_constants.rs:84:16 [INFO] [stdout] | [INFO] [stdout] 84 | let (x, y, z) = tup; // Deconstruct tuple to create bindings [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `call` [INFO] [stdout] --> src/bin/enums.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | fn call(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/primitives_constants.rs:15:9 [INFO] [stdout] | [INFO] [stdout] 15 | let mut b : u32 = 35; // u = unsigned integer, mut = mutable [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/bin/references_borrowing.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let a = y; /* Ownership is being "moved" to the variable a because the value [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> src/bin/references_borrowing.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let d = &c; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/bin/references_borrowing.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let e = &c; // variables d and e borrow from the variable c, [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin/references_borrowing.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let mut c = String::from("Hello world!"); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/bin/match.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | 1...5 => println!("It's one from 1 to 5"), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/bin/match.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | / if let number = 1 { [INFO] [stdout] 25 | | println!("The number is 1!"); [INFO] [stdout] 26 | | } else { [INFO] [stdout] 27 | | println!("The number isn't 1..") [INFO] [stdout] 28 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `number` [INFO] [stdout] --> src/bin/match.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 24 | if let number = 1 { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.11s [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "b2e1d272f569b5957878ea43d73217a31050155d7016fa63519389d7ef211b05", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b2e1d272f569b5957878ea43d73217a31050155d7016fa63519389d7ef211b05", kill_on_drop: false }` [INFO] [stdout] b2e1d272f569b5957878ea43d73217a31050155d7016fa63519389d7ef211b05