[INFO] fetching crate rust-learning 0.1.0... [INFO] testing rust-learning-0.1.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0 [INFO] extracting crate rust-learning 0.1.0 into /workspace/builds/worker-0-tc1/source [INFO] started tweaking crates.io crate rust-learning 0.1.0 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate rust-learning 0.1.0 [INFO] tweaked toml for crates.io crate rust-learning 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate rust-learning 0.1.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate rust-learning 0.1.0 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 805073282b863984eb28c85a3a8f8b6babaea926ff665cf9b8b6a3f3a17c1d33 [INFO] running `Command { std: "docker" "start" "-a" "805073282b863984eb28c85a3a8f8b6babaea926ff665cf9b8b6a3f3a17c1d33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "805073282b863984eb28c85a3a8f8b6babaea926ff665cf9b8b6a3f3a17c1d33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "805073282b863984eb28c85a3a8f8b6babaea926ff665cf9b8b6a3f3a17c1d33", kill_on_drop: false }` [INFO] [stdout] 805073282b863984eb28c85a3a8f8b6babaea926ff665cf9b8b6a3f3a17c1d33 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] e4c23c19297a6608a9af0de26bf7cfc3775e43a46d3bdc1e8ccce6b012f8ef9c [INFO] running `Command { std: "docker" "start" "-a" "e4c23c19297a6608a9af0de26bf7cfc3775e43a46d3bdc1e8ccce6b012f8ef9c", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.93 [INFO] [stderr] Compiling unicode-ident v1.0.16 [INFO] [stderr] Compiling libc v0.2.169 [INFO] [stderr] Compiling zerocopy v0.8.18 [INFO] [stderr] Compiling getrandom v0.3.1 [INFO] [stderr] Compiling byteorder v1.5.0 [INFO] [stderr] Compiling quote v1.0.38 [INFO] [stderr] Compiling syn v2.0.98 [INFO] [stderr] Compiling rand_core v0.9.1 [INFO] [stderr] Compiling zerocopy-derive v0.7.35 [INFO] [stderr] Compiling zerocopy v0.7.35 [INFO] [stderr] Compiling ppv-lite86 v0.2.20 [INFO] [stderr] Compiling rand_chacha v0.9.0 [INFO] [stderr] Compiling rand v0.9.0 [INFO] [stderr] Compiling rust-learning v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::string` [INFO] [stdout] --> src/type_trait_life/lifttime.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::string; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/lib.rs:294:17 [INFO] [stdout] | [INFO] [stdout] 294 | 'loop2: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: renamed to `rng` [INFO] [stdout] --> src/guess.rs:13:31 [INFO] [stdout] | [INFO] [stdout] 13 | let secret_number = rand::thread_rng().gen_range(1..=101); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range` [INFO] [stdout] --> src/guess.rs:13:44 [INFO] [stdout] | [INFO] [stdout] 13 | let secret_number = rand::thread_rng().gen_range(1..=101); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/closed_iter/iter.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut v = vec![1, 2, 3, 4, 5]; [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: `s2` [INFO] [stdout] --> src/ownership.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | let s2 = String::from("hello"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/ownership.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let s2 = s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/ownership.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 94 | let s1 = gives_ownership(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/ownership.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | let s3 = takes_and_gives_back(s2); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reference_to_nothing` [INFO] [stdout] --> src/ownership.rs:181:9 [INFO] [stdout] | [INFO] [stdout] 181 | let reference_to_nothing = dangle(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference_to_nothing` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hello` [INFO] [stdout] --> src/ownership.rs:198:9 [INFO] [stdout] | [INFO] [stdout] 198 | let hello = &s[0..5]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `world` [INFO] [stdout] --> src/ownership.rs:199:9 [INFO] [stdout] | [INFO] [stdout] 199 | let world = &s[6..11]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_world` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user3` [INFO] [stdout] --> src/struct_def.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let user3 = struct_build_user(String::from("some3"), String::from("some3@example.com")); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `subject` [INFO] [stdout] --> src/struct_def.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | let subject = AlwaysEqual; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subject` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rect3` [INFO] [stdout] --> src/struct_def.rs:126:9 [INFO] [stdout] | [INFO] [stdout] 126 | let rect3 = Rectangle { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_rect3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enum_match/enum_def.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | let home = IpAddr { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/enum_match/enum_def.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | let loopback = IpAddr { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enum_match/enum_def.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let home = IpAddress::V4(String::from("127.0.0.1")); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/enum_match/enum_def.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let loopback = IpAddress::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enum_match/enum_def.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let home = IpAddr2 { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_u8_value` [INFO] [stdout] --> src/enum_match/option_def.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let some_u8_value = 0i32; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_u8_value` [INFO] [stdout] --> src/enum_match/match_def.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let some_u8_value = Some(0); [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/enum_match/match_def.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let a = 15; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m1` [INFO] [stdout] --> src/collect/vector.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let m1 = v[0]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m2` [INFO] [stdout] --> src/collect/vector.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let m2 = v2[1]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m3` [INFO] [stdout] --> src/collect/vector.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let m3 = v3[2]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collect/vector.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let mut v3 = vec!["1", "2", "3"]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collect/vector.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let mut v4 = vec![String::from("1"), String::from("2"), String::from("3")]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> src/collect/vector.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | let row = vec![ [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/collect/string.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | let mut str = String::new(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/collect/string.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let s3 = s1 + &s2; // 注意 s1 被移动了，不能继续使用 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/collect/string.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let s = s1 + "-" + &s2 + "-" + &s3; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/collect/string.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let s = format!("{s1}-{s2}-{s3}"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/collect/string.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | let s1 = String::from("hello"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collect/string.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut str = String::new(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/panic/result.rs:14:25 [INFO] [stdout] | [INFO] [stdout] 14 | Err(e) => panic!("Error"), [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/panic/result.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let f = File::open("hello.txt").unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/panic/result.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let f = File::open("hello.txt").expect("Failed to open hello.txt"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:101:15 [INFO] [stdout] | [INFO] [stdout] 101 | fn notify_add(item: &(impl Summary + Display)) {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:102:43 [INFO] [stdout] | [INFO] [stdout] 102 | fn notify_bound_add(item: &T) {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:104:36 [INFO] [stdout] | [INFO] [stdout] 104 | fn notify_bound_where_no_res(t: &T, u: &U) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:104:43 [INFO] [stdout] | [INFO] [stdout] 104 | fn notify_bound_where_no_res(t: &T, u: &U) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:109:29 [INFO] [stdout] | [INFO] [stdout] 109 | fn notify_bound_where(t: &T, u: &U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:109:36 [INFO] [stdout] | [INFO] [stdout] 109 | fn notify_bound_where(t: &T, u: &U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/type_trait_life/lifttime.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let s: &'static str = "I have a static lifetime."; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/type_trait_life/lifttime.rs:80:9 [INFO] [stdout] | [INFO] [stdout] 80 | let i = ImportantExcerpt { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `y` is assigned to, but never used [INFO] [stdout] --> src/lib.rs:63:21 [INFO] [stdout] | [INFO] [stdout] 63 | let mut y = 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_y` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/lib.rs:64:13 [INFO] [stdout] | [INFO] [stdout] 64 | y = 2; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `closures_def` is never used [INFO] [stdout] --> src/closed_iter/closed.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn closures_def() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rectangle` is never constructed [INFO] [stdout] --> src/closed_iter/closed.rs:19:8 [INFO] [stdout] | [INFO] [stdout] 19 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `iter_def` is never used [INFO] [stdout] --> src/closed_iter/iter.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn iter_def() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Shoe` is never constructed [INFO] [stdout] --> src/closed_iter/iter.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | struct Shoe { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Shoe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `shoes_in_size` is never used [INFO] [stdout] --> src/closed_iter/iter.rs:29:4 [INFO] [stdout] | [INFO] [stdout] 29 | fn shoes_in_size(shoes: Vec, shoe_size: u32) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ownership_return` is never used [INFO] [stdout] --> src/ownership.rs:93:4 [INFO] [stdout] | [INFO] [stdout] 93 | fn ownership_return() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `gives_ownership` is never used [INFO] [stdout] --> src/ownership.rs:101:4 [INFO] [stdout] | [INFO] [stdout] 101 | fn gives_ownership() -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `takes_and_gives_back` is never used [INFO] [stdout] --> src/ownership.rs:106:4 [INFO] [stdout] | [INFO] [stdout] 106 | fn takes_and_gives_back(a_string: String) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `username`, `email`, and `sign_in_count` are never read [INFO] [stdout] --> src/struct_def.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 1 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 2 | username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 3 | email: String, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 4 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/struct_def.rs:42:14 [INFO] [stdout] | [INFO] [stdout] 42 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/struct_def.rs:44:14 [INFO] [stdout] | [INFO] [stdout] 44 | struct Point(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `AlwaysEqual` is never constructed [INFO] [stdout] --> src/struct_def.rs:62:8 [INFO] [stdout] | [INFO] [stdout] 62 | struct AlwaysEqual; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `struct_no_field` is never used [INFO] [stdout] --> src/struct_def.rs:63:4 [INFO] [stdout] | [INFO] [stdout] 63 | fn struct_no_field() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `kind` and `address` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct IpAddr { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 7 | kind: IpAddrKind, [INFO] [stdout] | ^^^^ [INFO] [stdout] 8 | address: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `kind` and `address` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 11 | struct IpAddr2 { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 12 | kind: IpAddrKind, [INFO] [stdout] | ^^^^ [INFO] [stdout] 13 | address: (u8, u8, u8, u8), [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_match/enum_def.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | V4(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 17 - V4(String), [INFO] [stdout] 17 + V4(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_match/enum_def.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | V6(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 18 - V6(String), [INFO] [stdout] 18 + V6(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:72:12 [INFO] [stdout] | [INFO] [stdout] 72 | Move { x: i32, y: i32 }, [INFO] [stdout] | ---- ^ ^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_match/enum_def.rs:73:11 [INFO] [stdout] | [INFO] [stdout] 73 | Write(String), [INFO] [stdout] | ----- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 73 - Write(String), [INFO] [stdout] 73 + Write(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:74:17 [INFO] [stdout] | [INFO] [stdout] 74 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ----------- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 74 - ChangeColor(i32, i32, i32), [INFO] [stdout] 74 + ChangeColor((), (), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Alaska` is never constructed [INFO] [stdout] --> src/enum_match/match_def.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 3 | enum UsState { [INFO] [stdout] | ------- variant in this enum [INFO] [stdout] 4 | Alabama, [INFO] [stdout] 5 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed [INFO] [stdout] --> src/enum_match/match_def.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 9 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 10 | Penny, [INFO] [stdout] 11 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 12 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eat_at_restaurant` is never used [INFO] [stdout] --> src/package_crate_use.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn eat_at_restaurant() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `function1` is never used [INFO] [stdout] --> src/package_crate_use.rs:62:4 [INFO] [stdout] | [INFO] [stdout] 62 | fn function1() -> Result { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `function2` is never used [INFO] [stdout] --> src/package_crate_use.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn function2() -> IoResult<()> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Breakfast` is never constructed [INFO] [stdout] --> src/package_crate_use.rs:5:16 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Breakfast { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `summer` is never used [INFO] [stdout] --> src/package_crate_use.rs:10:16 [INFO] [stdout] | [INFO] [stdout] 9 | impl Breakfast { [INFO] [stdout] | -------------- associated function in this implementation [INFO] [stdout] 10 | pub fn summer(toast: &str) -> Breakfast { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Appetizer` is never used [INFO] [stdout] --> src/package_crate_use.rs:18:14 [INFO] [stdout] | [INFO] [stdout] 18 | pub enum Appetizer { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `test_use_` is never used [INFO] [stdout] --> src/package_crate_use.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 49 | pub fn test_use_() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `SpreadsheetCell` is never used [INFO] [stdout] --> src/collect/vector.rs:63:6 [INFO] [stdout] | [INFO] [stdout] 63 | enum SpreadsheetCell { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vector_enum` is never used [INFO] [stdout] --> src/collect/vector.rs:70:8 [INFO] [stdout] | [INFO] [stdout] 70 | pub fn vector_enum() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_question_mark` is never used [INFO] [stdout] --> src/panic/result.rs:72:8 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn read_username_from_file_question_mark() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_std_lib` is never used [INFO] [stdout] --> src/panic/result.rs:86:8 [INFO] [stdout] | [INFO] [stdout] 86 | pub fn read_username_from_file_std_lib() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/type_trait_life/trait_def.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 19 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 23 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `content`, `reply`, and `retweet` are never read [INFO] [stdout] --> src/type_trait_life/trait_def.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 27 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 28 | username: String, [INFO] [stdout] 29 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 30 | reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 31 | retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_add` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:101:4 [INFO] [stdout] | [INFO] [stdout] 101 | fn notify_add(item: &(impl Summary + Display)) {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound_add` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:102:4 [INFO] [stdout] | [INFO] [stdout] 102 | fn notify_bound_add(item: &T) {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound_where_no_res` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:104:4 [INFO] [stdout] | [INFO] [stdout] 104 | fn notify_bound_where_no_res(t: &T, u: &U) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound_where` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:109:4 [INFO] [stdout] | [INFO] [stdout] 109 | fn notify_bound_where(t: &T, u: &U) -> i32 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `returns_summarizable` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:118:4 [INFO] [stdout] | [INFO] [stdout] 118 | fn returns_summarizable() -> impl Summary { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pair` is never constructed [INFO] [stdout] --> src/type_trait_life/trait_def.rs:160:8 [INFO] [stdout] | [INFO] [stdout] 160 | struct Pair { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:166:8 [INFO] [stdout] | [INFO] [stdout] 165 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 166 | fn new(x: T, y: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `cmp_display` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:172:8 [INFO] [stdout] | [INFO] [stdout] 171 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 172 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `first_demo` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn first_demo() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `borrow_checker` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn borrow_checker() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cmp_str_len` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:42:4 [INFO] [stdout] | [INFO] [stdout] 42 | fn cmp_str_len() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:62:4 [INFO] [stdout] | [INFO] [stdout] 62 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed [INFO] [stdout] --> src/type_trait_life/lifttime.rs:73:8 [INFO] [stdout] | [INFO] [stdout] 73 | struct ImportantExcerpt<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `lifetime_struct` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:77:4 [INFO] [stdout] | [INFO] [stdout] 77 | fn lifetime_struct() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:115:8 [INFO] [stdout] | [INFO] [stdout] 114 | impl<'a> ImportantExcerpt<'a> { [INFO] [stdout] | ----------------------------- methods in this implementation [INFO] [stdout] 115 | fn level(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 118 | fn announce_and_return_part(&self, announcement: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest_with_an_announcement` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:125:4 [INFO] [stdout] | [INFO] [stdout] 125 | fn longest_with_an_announcement<'a, T>( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `add` is never used [INFO] [stdout] --> src/lib.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | fn add(a: i32, b: i32) -> i32 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `subtract` is never used [INFO] [stdout] --> src/lib.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | fn subtract(a: i32, b: i32) -> i32 { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `enum_def`, `if_let_def`, `match_def`, and `option_def` [INFO] [stdout] --> src/main.rs:3:33 [INFO] [stdout] | [INFO] [stdout] 3 | use rust_learning::enum_match::{enum_def, option_def, match_def, if_let_def}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rand::Rng` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use rand::Rng; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `control_flow`, `data_types`, `function`, and `variable` [INFO] [stdout] --> src/main.rs:7:34 [INFO] [stdout] | [INFO] [stdout] 7 | use rust_learning::base_theory::{control_flow, data_types, function, variable}; [INFO] [stdout] | ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `collect`, `enum_match`, `ownership`, `panic`, and `type_trait_life` [INFO] [stdout] --> src/main.rs:9:21 [INFO] [stdout] | [INFO] [stdout] 9 | use rust_learning::{collect, enum_match, ownership, panic, type_trait_life}; [INFO] [stdout] | ^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rust_learning::pub_use` [INFO] [stdout] --> src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use rust_learning::pub_use; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Summary` and `Tweet` [INFO] [stdout] --> src/main.rs:17:38 [INFO] [stdout] | [INFO] [stdout] 17 | use rust_learning::type_trait_life::{Summary, Tweet}; [INFO] [stdout] | ^^^^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rust_learning::struct_def` [INFO] [stdout] --> src/main.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use rust_learning::struct_def; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.25s [INFO] running `Command { std: "docker" "inspect" "e4c23c19297a6608a9af0de26bf7cfc3775e43a46d3bdc1e8ccce6b012f8ef9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e4c23c19297a6608a9af0de26bf7cfc3775e43a46d3bdc1e8ccce6b012f8ef9c", kill_on_drop: false }` [INFO] [stdout] e4c23c19297a6608a9af0de26bf7cfc3775e43a46d3bdc1e8ccce6b012f8ef9c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] e136545e3c97c9e14f785dc6761941c6129184e011437fc645980a381c86df22 [INFO] running `Command { std: "docker" "start" "-a" "e136545e3c97c9e14f785dc6761941c6129184e011437fc645980a381c86df22", kill_on_drop: false }` [INFO] [stdout] warning: unused import: `std::string` [INFO] [stdout] --> src/type_trait_life/lifttime.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::string; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/lib.rs:294:17 [INFO] [stdout] | [INFO] [stdout] 294 | 'loop2: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: renamed to `rng` [INFO] [stdout] --> src/guess.rs:13:31 [INFO] [stdout] | [INFO] [stdout] 13 | let secret_number = rand::thread_rng().gen_range(1..=101); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range` [INFO] [stdout] --> src/guess.rs:13:44 [INFO] [stdout] | [INFO] [stdout] 13 | let secret_number = rand::thread_rng().gen_range(1..=101); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/closed_iter/iter.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut v = vec![1, 2, 3, 4, 5]; [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: `s2` [INFO] [stdout] --> src/ownership.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | let s2 = String::from("hello"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/ownership.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let s2 = s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/ownership.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 94 | let s1 = gives_ownership(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/ownership.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | let s3 = takes_and_gives_back(s2); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reference_to_nothing` [INFO] [stdout] --> src/ownership.rs:181:9 [INFO] [stdout] | [INFO] [stdout] 181 | let reference_to_nothing = dangle(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference_to_nothing` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hello` [INFO] [stdout] --> src/ownership.rs:198:9 [INFO] [stdout] | [INFO] [stdout] 198 | let hello = &s[0..5]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `world` [INFO] [stdout] --> src/ownership.rs:199:9 [INFO] [stdout] | [INFO] [stdout] 199 | let world = &s[6..11]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_world` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user3` [INFO] [stdout] --> src/struct_def.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let user3 = struct_build_user(String::from("some3"), String::from("some3@example.com")); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `subject` [INFO] [stdout] --> src/struct_def.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | let subject = AlwaysEqual; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subject` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rect3` [INFO] [stdout] --> src/struct_def.rs:126:9 [INFO] [stdout] | [INFO] [stdout] 126 | let rect3 = Rectangle { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_rect3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enum_match/enum_def.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | let home = IpAddr { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/enum_match/enum_def.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | let loopback = IpAddr { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enum_match/enum_def.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let home = IpAddress::V4(String::from("127.0.0.1")); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/enum_match/enum_def.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let loopback = IpAddress::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enum_match/enum_def.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let home = IpAddr2 { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_u8_value` [INFO] [stdout] --> src/enum_match/option_def.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let some_u8_value = 0i32; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_u8_value` [INFO] [stdout] --> src/enum_match/match_def.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let some_u8_value = Some(0); [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/enum_match/match_def.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let a = 15; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m1` [INFO] [stdout] --> src/collect/vector.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let m1 = v[0]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m2` [INFO] [stdout] --> src/collect/vector.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let m2 = v2[1]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m3` [INFO] [stdout] --> src/collect/vector.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let m3 = v3[2]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collect/vector.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let mut v3 = vec!["1", "2", "3"]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collect/vector.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let mut v4 = vec![String::from("1"), String::from("2"), String::from("3")]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> src/collect/vector.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | let row = vec![ [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/collect/string.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | let mut str = String::new(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/collect/string.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let s3 = s1 + &s2; // 注意 s1 被移动了，不能继续使用 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/collect/string.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let s = s1 + "-" + &s2 + "-" + &s3; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/collect/string.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let s = format!("{s1}-{s2}-{s3}"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/collect/string.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | let s1 = String::from("hello"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collect/string.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut str = String::new(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/panic/result.rs:14:25 [INFO] [stdout] | [INFO] [stdout] 14 | Err(e) => panic!("Error"), [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/panic/result.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let f = File::open("hello.txt").unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/panic/result.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let f = File::open("hello.txt").expect("Failed to open hello.txt"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:101:15 [INFO] [stdout] | [INFO] [stdout] 101 | fn notify_add(item: &(impl Summary + Display)) {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:102:43 [INFO] [stdout] | [INFO] [stdout] 102 | fn notify_bound_add(item: &T) {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:104:36 [INFO] [stdout] | [INFO] [stdout] 104 | fn notify_bound_where_no_res(t: &T, u: &U) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:104:43 [INFO] [stdout] | [INFO] [stdout] 104 | fn notify_bound_where_no_res(t: &T, u: &U) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:109:29 [INFO] [stdout] | [INFO] [stdout] 109 | fn notify_bound_where(t: &T, u: &U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:109:36 [INFO] [stdout] | [INFO] [stdout] 109 | fn notify_bound_where(t: &T, u: &U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/type_trait_life/lifttime.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let s: &'static str = "I have a static lifetime."; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/type_trait_life/lifttime.rs:80:9 [INFO] [stdout] | [INFO] [stdout] 80 | let i = ImportantExcerpt { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `y` is assigned to, but never used [INFO] [stdout] --> src/lib.rs:63:21 [INFO] [stdout] | [INFO] [stdout] 63 | let mut y = 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_y` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/lib.rs:64:13 [INFO] [stdout] | [INFO] [stdout] 64 | y = 2; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `closures_def` is never used [INFO] [stdout] --> src/closed_iter/closed.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn closures_def() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Rectangle` is never constructed [INFO] [stdout] --> src/closed_iter/closed.rs:19:8 [INFO] [stdout] | [INFO] [stdout] 19 | struct Rectangle { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `iter_def` is never used [INFO] [stdout] --> src/closed_iter/iter.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn iter_def() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Shoe` is never constructed [INFO] [stdout] --> src/closed_iter/iter.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | struct Shoe { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Shoe` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `shoes_in_size` is never used [INFO] [stdout] --> src/closed_iter/iter.rs:29:4 [INFO] [stdout] | [INFO] [stdout] 29 | fn shoes_in_size(shoes: Vec, shoe_size: u32) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ownership_return` is never used [INFO] [stdout] --> src/ownership.rs:93:4 [INFO] [stdout] | [INFO] [stdout] 93 | fn ownership_return() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `gives_ownership` is never used [INFO] [stdout] --> src/ownership.rs:101:4 [INFO] [stdout] | [INFO] [stdout] 101 | fn gives_ownership() -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `takes_and_gives_back` is never used [INFO] [stdout] --> src/ownership.rs:106:4 [INFO] [stdout] | [INFO] [stdout] 106 | fn takes_and_gives_back(a_string: String) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `username`, `email`, and `sign_in_count` are never read [INFO] [stdout] --> src/struct_def.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 1 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 2 | username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 3 | email: String, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 4 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/struct_def.rs:42:14 [INFO] [stdout] | [INFO] [stdout] 42 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/struct_def.rs:44:14 [INFO] [stdout] | [INFO] [stdout] 44 | struct Point(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `AlwaysEqual` is never constructed [INFO] [stdout] --> src/struct_def.rs:62:8 [INFO] [stdout] | [INFO] [stdout] 62 | struct AlwaysEqual; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `struct_no_field` is never used [INFO] [stdout] --> src/struct_def.rs:63:4 [INFO] [stdout] | [INFO] [stdout] 63 | fn struct_no_field() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `kind` and `address` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct IpAddr { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 7 | kind: IpAddrKind, [INFO] [stdout] | ^^^^ [INFO] [stdout] 8 | address: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `kind` and `address` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 11 | struct IpAddr2 { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 12 | kind: IpAddrKind, [INFO] [stdout] | ^^^^ [INFO] [stdout] 13 | address: (u8, u8, u8, u8), [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_match/enum_def.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | V4(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 17 - V4(String), [INFO] [stdout] 17 + V4(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_match/enum_def.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | V6(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 18 - V6(String), [INFO] [stdout] 18 + V6(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:72:12 [INFO] [stdout] | [INFO] [stdout] 72 | Move { x: i32, y: i32 }, [INFO] [stdout] | ---- ^ ^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_match/enum_def.rs:73:11 [INFO] [stdout] | [INFO] [stdout] 73 | Write(String), [INFO] [stdout] | ----- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 73 - Write(String), [INFO] [stdout] 73 + Write(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:74:17 [INFO] [stdout] | [INFO] [stdout] 74 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ----------- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 74 - ChangeColor(i32, i32, i32), [INFO] [stdout] 74 + ChangeColor((), (), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling rust-learning v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variant `Alaska` is never constructed [INFO] [stdout] --> src/enum_match/match_def.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 3 | enum UsState { [INFO] [stdout] | ------- variant in this enum [INFO] [stdout] 4 | Alabama, [INFO] [stdout] 5 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed [INFO] [stdout] --> src/enum_match/match_def.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 9 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 10 | Penny, [INFO] [stdout] 11 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 12 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eat_at_restaurant` is never used [INFO] [stdout] --> src/package_crate_use.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn eat_at_restaurant() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `function1` is never used [INFO] [stdout] --> src/package_crate_use.rs:62:4 [INFO] [stdout] | [INFO] [stdout] 62 | fn function1() -> Result { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `function2` is never used [INFO] [stdout] --> src/package_crate_use.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn function2() -> IoResult<()> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Breakfast` is never constructed [INFO] [stdout] --> src/package_crate_use.rs:5:16 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Breakfast { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `summer` is never used [INFO] [stdout] --> src/package_crate_use.rs:10:16 [INFO] [stdout] | [INFO] [stdout] 9 | impl Breakfast { [INFO] [stdout] | -------------- associated function in this implementation [INFO] [stdout] 10 | pub fn summer(toast: &str) -> Breakfast { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Appetizer` is never used [INFO] [stdout] --> src/package_crate_use.rs:18:14 [INFO] [stdout] | [INFO] [stdout] 18 | pub enum Appetizer { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `test_use_` is never used [INFO] [stdout] --> src/package_crate_use.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 49 | pub fn test_use_() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `SpreadsheetCell` is never used [INFO] [stdout] --> src/collect/vector.rs:63:6 [INFO] [stdout] | [INFO] [stdout] 63 | enum SpreadsheetCell { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vector_enum` is never used [INFO] [stdout] --> src/collect/vector.rs:70:8 [INFO] [stdout] | [INFO] [stdout] 70 | pub fn vector_enum() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_question_mark` is never used [INFO] [stdout] --> src/panic/result.rs:72:8 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn read_username_from_file_question_mark() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_std_lib` is never used [INFO] [stdout] --> src/panic/result.rs:86:8 [INFO] [stdout] | [INFO] [stdout] 86 | pub fn read_username_from_file_std_lib() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/type_trait_life/trait_def.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 19 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 23 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `content`, `reply`, and `retweet` are never read [INFO] [stdout] --> src/type_trait_life/trait_def.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 27 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 28 | username: String, [INFO] [stdout] 29 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 30 | reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 31 | retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_add` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:101:4 [INFO] [stdout] | [INFO] [stdout] 101 | fn notify_add(item: &(impl Summary + Display)) {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound_add` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:102:4 [INFO] [stdout] | [INFO] [stdout] 102 | fn notify_bound_add(item: &T) {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound_where_no_res` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:104:4 [INFO] [stdout] | [INFO] [stdout] 104 | fn notify_bound_where_no_res(t: &T, u: &U) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound_where` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:109:4 [INFO] [stdout] | [INFO] [stdout] 109 | fn notify_bound_where(t: &T, u: &U) -> i32 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `returns_summarizable` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:118:4 [INFO] [stdout] | [INFO] [stdout] 118 | fn returns_summarizable() -> impl Summary { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pair` is never constructed [INFO] [stdout] --> src/type_trait_life/trait_def.rs:160:8 [INFO] [stdout] | [INFO] [stdout] 160 | struct Pair { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:166:8 [INFO] [stdout] | [INFO] [stdout] 165 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 166 | fn new(x: T, y: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `cmp_display` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:172:8 [INFO] [stdout] | [INFO] [stdout] 171 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 172 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `first_demo` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn first_demo() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `borrow_checker` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn borrow_checker() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cmp_str_len` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:42:4 [INFO] [stdout] | [INFO] [stdout] 42 | fn cmp_str_len() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:62:4 [INFO] [stdout] | [INFO] [stdout] 62 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed [INFO] [stdout] --> src/type_trait_life/lifttime.rs:73:8 [INFO] [stdout] | [INFO] [stdout] 73 | struct ImportantExcerpt<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `lifetime_struct` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:77:4 [INFO] [stdout] | [INFO] [stdout] 77 | fn lifetime_struct() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:115:8 [INFO] [stdout] | [INFO] [stdout] 114 | impl<'a> ImportantExcerpt<'a> { [INFO] [stdout] | ----------------------------- methods in this implementation [INFO] [stdout] 115 | fn level(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 118 | fn announce_and_return_part(&self, announcement: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest_with_an_announcement` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:125:4 [INFO] [stdout] | [INFO] [stdout] 125 | fn longest_with_an_announcement<'a, T>( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `add` is never used [INFO] [stdout] --> src/lib.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | fn add(a: i32, b: i32) -> i32 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `subtract` is never used [INFO] [stdout] --> src/lib.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | fn subtract(a: i32, b: i32) -> i32 { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `enum_def`, `if_let_def`, `match_def`, and `option_def` [INFO] [stdout] --> src/main.rs:3:33 [INFO] [stdout] | [INFO] [stdout] 3 | use rust_learning::enum_match::{enum_def, option_def, match_def, if_let_def}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rand::Rng` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use rand::Rng; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `control_flow`, `data_types`, `function`, and `variable` [INFO] [stdout] --> src/main.rs:7:34 [INFO] [stdout] | [INFO] [stdout] 7 | use rust_learning::base_theory::{control_flow, data_types, function, variable}; [INFO] [stdout] | ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `collect`, `enum_match`, `ownership`, `panic`, and `type_trait_life` [INFO] [stdout] --> src/main.rs:9:21 [INFO] [stdout] | [INFO] [stdout] 9 | use rust_learning::{collect, enum_match, ownership, panic, type_trait_life}; [INFO] [stdout] | ^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rust_learning::pub_use` [INFO] [stdout] --> src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use rust_learning::pub_use; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Summary` and `Tweet` [INFO] [stdout] --> src/main.rs:17:38 [INFO] [stdout] | [INFO] [stdout] 17 | use rust_learning::type_trait_life::{Summary, Tweet}; [INFO] [stdout] | ^^^^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rust_learning::struct_def` [INFO] [stdout] --> src/main.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use rust_learning::struct_def; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0603]: function `subtract` is private [INFO] [stdout] --> tests/integration_test.rs:2:31 [INFO] [stdout] | [INFO] [stdout] 2 | use rust_learning::unit_test::subtract; [INFO] [stdout] | ^^^^^^^^ private function [INFO] [stdout] | [INFO] [stdout] note: the function `subtract` is defined here [INFO] [stdout] --> /opt/rustwide/workdir/src/lib.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | fn subtract(a: i32, b: i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `enum_def`, `if_let_def`, `match_def`, and `option_def` [INFO] [stdout] --> src/main.rs:3:33 [INFO] [stdout] | [INFO] [stdout] 3 | use rust_learning::enum_match::{enum_def, option_def, match_def, if_let_def}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rand::Rng` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use rand::Rng; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `control_flow`, `data_types`, `function`, and `variable` [INFO] [stdout] --> src/main.rs:7:34 [INFO] [stdout] | [INFO] [stdout] 7 | use rust_learning::base_theory::{control_flow, data_types, function, variable}; [INFO] [stdout] | ^^^^^^^^^^^^ ^^^^^^^^^^ ^^^^^^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `collect`, `enum_match`, `ownership`, `panic`, and `type_trait_life` [INFO] [stdout] --> src/main.rs:9:21 [INFO] [stdout] | [INFO] [stdout] 9 | use rust_learning::{collect, enum_match, ownership, panic, type_trait_life}; [INFO] [stdout] | ^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^ ^^^^^ ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rust_learning::pub_use` [INFO] [stdout] --> src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use rust_learning::pub_use; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Summary` and `Tweet` [INFO] [stdout] --> src/main.rs:17:38 [INFO] [stdout] | [INFO] [stdout] 17 | use rust_learning::type_trait_life::{Summary, Tweet}; [INFO] [stdout] | ^^^^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rust_learning::struct_def` [INFO] [stdout] --> src/main.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use rust_learning::struct_def; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::string` [INFO] [stdout] --> src/type_trait_life/lifttime.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::string; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused label [INFO] [stdout] --> src/lib.rs:294:17 [INFO] [stdout] | [INFO] [stdout] 294 | 'loop2: loop { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_labels)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0603`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-learning` (test "integration_test") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: use of deprecated function `rand::thread_rng`: renamed to `rng` [INFO] [stdout] --> src/guess.rs:13:31 [INFO] [stdout] | [INFO] [stdout] 13 | let secret_number = rand::thread_rng().gen_range(1..=101); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range` [INFO] [stdout] --> src/guess.rs:13:44 [INFO] [stdout] | [INFO] [stdout] 13 | let secret_number = rand::thread_rng().gen_range(1..=101); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> src/closed_iter/closed.rs:111:13 [INFO] [stdout] | [INFO] [stdout] 111 | let value = String::from("closure called"); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/closed_iter/iter.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let mut v = vec![1, 2, 3, 4, 5]; [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: `v1` [INFO] [stdout] --> src/closed_iter/iter.rs:80:13 [INFO] [stdout] | [INFO] [stdout] 80 | let v1: Vec = vec![1, 2, 3]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_v1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/ownership.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | let s2 = String::from("hello"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s2` [INFO] [stdout] --> src/ownership.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let s2 = s1; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/ownership.rs:94:9 [INFO] [stdout] | [INFO] [stdout] 94 | let s1 = gives_ownership(); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/ownership.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | let s3 = takes_and_gives_back(s2); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `reference_to_nothing` [INFO] [stdout] --> src/ownership.rs:181:9 [INFO] [stdout] | [INFO] [stdout] 181 | let reference_to_nothing = dangle(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_reference_to_nothing` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hello` [INFO] [stdout] --> src/ownership.rs:198:9 [INFO] [stdout] | [INFO] [stdout] 198 | let hello = &s[0..5]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `world` [INFO] [stdout] --> src/ownership.rs:199:9 [INFO] [stdout] | [INFO] [stdout] 199 | let world = &s[6..11]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_world` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user3` [INFO] [stdout] --> src/struct_def.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let user3 = struct_build_user(String::from("some3"), String::from("some3@example.com")); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `subject` [INFO] [stdout] --> src/struct_def.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | let subject = AlwaysEqual; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subject` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rect3` [INFO] [stdout] --> src/struct_def.rs:126:9 [INFO] [stdout] | [INFO] [stdout] 126 | let rect3 = Rectangle { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_rect3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enum_match/enum_def.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | let home = IpAddr { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/enum_match/enum_def.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | let loopback = IpAddr { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enum_match/enum_def.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let home = IpAddress::V4(String::from("127.0.0.1")); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `loopback` [INFO] [stdout] --> src/enum_match/enum_def.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let loopback = IpAddress::V6(String::from("::1")); [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_loopback` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> src/enum_match/enum_def.rs:50:9 [INFO] [stdout] | [INFO] [stdout] 50 | let home = IpAddr2 { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_u8_value` [INFO] [stdout] --> src/enum_match/option_def.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let some_u8_value = 0i32; [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `some_u8_value` [INFO] [stdout] --> src/enum_match/match_def.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let some_u8_value = Some(0); [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_u8_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/enum_match/match_def.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | let a = 15; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m1` [INFO] [stdout] --> src/collect/vector.rs:21:9 [INFO] [stdout] | [INFO] [stdout] 21 | let m1 = v[0]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m2` [INFO] [stdout] --> src/collect/vector.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | let m2 = v2[1]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `m3` [INFO] [stdout] --> src/collect/vector.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let m3 = v3[2]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_m3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collect/vector.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let mut v3 = vec!["1", "2", "3"]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collect/vector.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | let mut v4 = vec![String::from("1"), String::from("2"), String::from("3")]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> src/collect/vector.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | let row = vec![ [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str` [INFO] [stdout] --> src/collect/string.rs:9:13 [INFO] [stdout] | [INFO] [stdout] 9 | let mut str = String::new(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s3` [INFO] [stdout] --> src/collect/string.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 47 | let s3 = s1 + &s2; // 注意 s1 被移动了，不能继续使用 [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/collect/string.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let s = s1 + "-" + &s2 + "-" + &s3; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/collect/string.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | let s = format!("{s1}-{s2}-{s3}"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> src/collect/string.rs:64:9 [INFO] [stdout] | [INFO] [stdout] 64 | let s1 = String::from("hello"); [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/collect/string.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let mut str = String::new(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/panic/result.rs:14:25 [INFO] [stdout] | [INFO] [stdout] 14 | Err(e) => panic!("Error"), [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/panic/result.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | let f = File::open("hello.txt").unwrap(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/panic/result.rs:35:9 [INFO] [stdout] | [INFO] [stdout] 35 | let f = File::open("hello.txt").expect("Failed to open hello.txt"); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:101:15 [INFO] [stdout] | [INFO] [stdout] 101 | fn notify_add(item: &(impl Summary + Display)) {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:102:43 [INFO] [stdout] | [INFO] [stdout] 102 | fn notify_bound_add(item: &T) {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:104:36 [INFO] [stdout] | [INFO] [stdout] 104 | fn notify_bound_where_no_res(t: &T, u: &U) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:104:43 [INFO] [stdout] | [INFO] [stdout] 104 | fn notify_bound_where_no_res(t: &T, u: &U) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:109:29 [INFO] [stdout] | [INFO] [stdout] 109 | fn notify_bound_where(t: &T, u: &U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> src/type_trait_life/trait_def.rs:109:36 [INFO] [stdout] | [INFO] [stdout] 109 | fn notify_bound_where(t: &T, u: &U) -> i32 [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/type_trait_life/lifttime.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let s: &'static str = "I have a static lifetime."; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/type_trait_life/lifttime.rs:80:9 [INFO] [stdout] | [INFO] [stdout] 80 | let i = ImportantExcerpt { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `y` is assigned to, but never used [INFO] [stdout] --> src/lib.rs:63:21 [INFO] [stdout] | [INFO] [stdout] 63 | let mut y = 1; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_y` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `y` is never read [INFO] [stdout] --> src/lib.rs:64:13 [INFO] [stdout] | [INFO] [stdout] 64 | y = 2; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `closures_def` is never used [INFO] [stdout] --> src/closed_iter/closed.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn closures_def() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `height` is never read [INFO] [stdout] --> src/closed_iter/closed.rs:21:5 [INFO] [stdout] | [INFO] [stdout] 19 | struct Rectangle { [INFO] [stdout] | --------- field in this struct [INFO] [stdout] 20 | width: u32, [INFO] [stdout] 21 | height: u32, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `ownership_return` is never used [INFO] [stdout] --> src/ownership.rs:93:4 [INFO] [stdout] | [INFO] [stdout] 93 | fn ownership_return() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `gives_ownership` is never used [INFO] [stdout] --> src/ownership.rs:101:4 [INFO] [stdout] | [INFO] [stdout] 101 | fn gives_ownership() -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `takes_and_gives_back` is never used [INFO] [stdout] --> src/ownership.rs:106:4 [INFO] [stdout] | [INFO] [stdout] 106 | fn takes_and_gives_back(a_string: String) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `username`, `email`, and `sign_in_count` are never read [INFO] [stdout] --> src/struct_def.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 1 | struct User { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 2 | username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 3 | email: String, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 4 | sign_in_count: u64, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/struct_def.rs:42:14 [INFO] [stdout] | [INFO] [stdout] 42 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/struct_def.rs:44:14 [INFO] [stdout] | [INFO] [stdout] 44 | struct Point(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `AlwaysEqual` is never constructed [INFO] [stdout] --> src/struct_def.rs:62:8 [INFO] [stdout] | [INFO] [stdout] 62 | struct AlwaysEqual; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `struct_no_field` is never used [INFO] [stdout] --> src/struct_def.rs:63:4 [INFO] [stdout] | [INFO] [stdout] 63 | fn struct_no_field() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `kind` and `address` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct IpAddr { [INFO] [stdout] | ------ fields in this struct [INFO] [stdout] 7 | kind: IpAddrKind, [INFO] [stdout] | ^^^^ [INFO] [stdout] 8 | address: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `kind` and `address` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 11 | struct IpAddr2 { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] 12 | kind: IpAddrKind, [INFO] [stdout] | ^^^^ [INFO] [stdout] 13 | address: (u8, u8, u8, u8), [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_match/enum_def.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | V4(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 17 - V4(String), [INFO] [stdout] 17 + V4(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_match/enum_def.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | V6(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 18 - V6(String), [INFO] [stdout] 18 + V6(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:72:12 [INFO] [stdout] | [INFO] [stdout] 72 | Move { x: i32, y: i32 }, [INFO] [stdout] | ---- ^ ^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/enum_match/enum_def.rs:73:11 [INFO] [stdout] | [INFO] [stdout] 73 | Write(String), [INFO] [stdout] | ----- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 73 - Write(String), [INFO] [stdout] 73 + Write(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/enum_match/enum_def.rs:74:17 [INFO] [stdout] | [INFO] [stdout] 74 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ----------- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Message` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields [INFO] [stdout] | [INFO] [stdout] 74 - ChangeColor(i32, i32, i32), [INFO] [stdout] 74 + ChangeColor((), (), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Alaska` is never constructed [INFO] [stdout] --> src/enum_match/match_def.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 3 | enum UsState { [INFO] [stdout] | ------- variant in this enum [INFO] [stdout] 4 | Alabama, [INFO] [stdout] 5 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed [INFO] [stdout] --> src/enum_match/match_def.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 9 | enum Coin { [INFO] [stdout] | ---- variants in this enum [INFO] [stdout] 10 | Penny, [INFO] [stdout] 11 | Nickel, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] 12 | Dime, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eat_at_restaurant` is never used [INFO] [stdout] --> src/package_crate_use.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn eat_at_restaurant() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `function1` is never used [INFO] [stdout] --> src/package_crate_use.rs:62:4 [INFO] [stdout] | [INFO] [stdout] 62 | fn function1() -> Result { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `function2` is never used [INFO] [stdout] --> src/package_crate_use.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn function2() -> IoResult<()> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Breakfast` is never constructed [INFO] [stdout] --> src/package_crate_use.rs:5:16 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct Breakfast { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `summer` is never used [INFO] [stdout] --> src/package_crate_use.rs:10:16 [INFO] [stdout] | [INFO] [stdout] 9 | impl Breakfast { [INFO] [stdout] | -------------- associated function in this implementation [INFO] [stdout] 10 | pub fn summer(toast: &str) -> Breakfast { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Appetizer` is never used [INFO] [stdout] --> src/package_crate_use.rs:18:14 [INFO] [stdout] | [INFO] [stdout] 18 | pub enum Appetizer { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `test_use_` is never used [INFO] [stdout] --> src/package_crate_use.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 49 | pub fn test_use_() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `SpreadsheetCell` is never used [INFO] [stdout] --> src/collect/vector.rs:63:6 [INFO] [stdout] | [INFO] [stdout] 63 | enum SpreadsheetCell { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `vector_enum` is never used [INFO] [stdout] --> src/collect/vector.rs:70:8 [INFO] [stdout] | [INFO] [stdout] 70 | pub fn vector_enum() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_question_mark` is never used [INFO] [stdout] --> src/panic/result.rs:72:8 [INFO] [stdout] | [INFO] [stdout] 72 | pub fn read_username_from_file_question_mark() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_username_from_file_std_lib` is never used [INFO] [stdout] --> src/panic/result.rs:86:8 [INFO] [stdout] | [INFO] [stdout] 86 | pub fn read_username_from_file_std_lib() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/type_trait_life/trait_def.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 19 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 23 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `content`, `reply`, and `retweet` are never read [INFO] [stdout] --> src/type_trait_life/trait_def.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 27 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 28 | username: String, [INFO] [stdout] 29 | content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 30 | reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 31 | retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_add` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:101:4 [INFO] [stdout] | [INFO] [stdout] 101 | fn notify_add(item: &(impl Summary + Display)) {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound_add` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:102:4 [INFO] [stdout] | [INFO] [stdout] 102 | fn notify_bound_add(item: &T) {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound_where_no_res` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:104:4 [INFO] [stdout] | [INFO] [stdout] 104 | fn notify_bound_where_no_res(t: &T, u: &U) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `notify_bound_where` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:109:4 [INFO] [stdout] | [INFO] [stdout] 109 | fn notify_bound_where(t: &T, u: &U) -> i32 [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `returns_summarizable` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:118:4 [INFO] [stdout] | [INFO] [stdout] 118 | fn returns_summarizable() -> impl Summary { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Pair` is never constructed [INFO] [stdout] --> src/type_trait_life/trait_def.rs:160:8 [INFO] [stdout] | [INFO] [stdout] 160 | struct Pair { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:166:8 [INFO] [stdout] | [INFO] [stdout] 165 | impl Pair { [INFO] [stdout] | --------------- associated function in this implementation [INFO] [stdout] 166 | fn new(x: T, y: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `cmp_display` is never used [INFO] [stdout] --> src/type_trait_life/trait_def.rs:172:8 [INFO] [stdout] | [INFO] [stdout] 171 | impl Pair { [INFO] [stdout] | ------------------------------------- method in this implementation [INFO] [stdout] 172 | fn cmp_display(&self) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `first_demo` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:20:4 [INFO] [stdout] | [INFO] [stdout] 20 | fn first_demo() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `borrow_checker` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn borrow_checker() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `cmp_str_len` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:42:4 [INFO] [stdout] | [INFO] [stdout] 42 | fn cmp_str_len() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:62:4 [INFO] [stdout] | [INFO] [stdout] 62 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed [INFO] [stdout] --> src/type_trait_life/lifttime.rs:73:8 [INFO] [stdout] | [INFO] [stdout] 73 | struct ImportantExcerpt<'a> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `lifetime_struct` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:77:4 [INFO] [stdout] | [INFO] [stdout] 77 | fn lifetime_struct() { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `level` and `announce_and_return_part` are never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:115:8 [INFO] [stdout] | [INFO] [stdout] 114 | impl<'a> ImportantExcerpt<'a> { [INFO] [stdout] | ----------------------------- methods in this implementation [INFO] [stdout] 115 | fn level(&self) -> i32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 118 | fn announce_and_return_part(&self, announcement: &str) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest_with_an_announcement` is never used [INFO] [stdout] --> src/type_trait_life/lifttime.rs:125:4 [INFO] [stdout] | [INFO] [stdout] 125 | fn longest_with_an_announcement<'a, T>( [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "e136545e3c97c9e14f785dc6761941c6129184e011437fc645980a381c86df22", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e136545e3c97c9e14f785dc6761941c6129184e011437fc645980a381c86df22", kill_on_drop: false }` [INFO] [stdout] e136545e3c97c9e14f785dc6761941c6129184e011437fc645980a381c86df22