[INFO] cloning repository https://github.com/YoruAi/RustStudy [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/YoruAi/RustStudy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYoruAi%2FRustStudy", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYoruAi%2FRustStudy'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3520973f0097d52a13779d1137493ca9e422d5c0 [INFO] checking YoruAi/RustStudy against master#fd0c901b00ee1e08a250039cdb90258603497e20 for pr-153692 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYoruAi%2FRustStudy" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml [INFO] started tweaking git repo https://github.com/YoruAi/RustStudy [INFO] finished tweaking git repo https://github.com/YoruAi/RustStudy [INFO] tweaked toml for git repo https://github.com/YoruAi/RustStudy written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/YoruAi/RustStudy on toolchain fd0c901b00ee1e08a250039cdb90258603497e20 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fd0c901b00ee1e08a250039cdb90258603497e20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/YoruAi/RustStudy 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" "+fd0c901b00ee1e08a250039cdb90258603497e20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded bcrypt v0.18.0 [INFO] [stderr] Downloaded sea-orm-macros v1.1.19 [INFO] [stderr] Downloaded inherent v1.0.13 [INFO] [stderr] Downloaded sea-query v0.32.7 [INFO] [stderr] Downloaded bigdecimal v0.4.10 [INFO] [stderr] Downloaded sea-orm v1.1.19 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+fd0c901b00ee1e08a250039cdb90258603497e20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 17ca350abbf4a3e183ee8443b1db04ae29f616d4fe996d137d8199b125e4317b [INFO] running `Command { std: "docker" "start" "-a" "17ca350abbf4a3e183ee8443b1db04ae29f616d4fe996d137d8199b125e4317b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "17ca350abbf4a3e183ee8443b1db04ae29f616d4fe996d137d8199b125e4317b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "17ca350abbf4a3e183ee8443b1db04ae29f616d4fe996d137d8199b125e4317b", kill_on_drop: false }` [INFO] [stdout] 17ca350abbf4a3e183ee8443b1db04ae29f616d4fe996d137d8199b125e4317b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+fd0c901b00ee1e08a250039cdb90258603497e20" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7fffbf6b519bf18cc598a294638ddf23cb425d64ec4cef63cbfd25d700b083ae [INFO] running `Command { std: "docker" "start" "-a" "7fffbf6b519bf18cc598a294638ddf23cb425d64ec4cef63cbfd25d700b083ae", kill_on_drop: false }` [INFO] [stderr] Compiling zerocopy v0.8.39 [INFO] [stderr] Checking futures-io v0.3.32 [INFO] [stderr] Compiling syn v2.0.117 [INFO] [stderr] Checking getrandom v0.2.17 [INFO] [stderr] Checking bitflags v2.11.0 [INFO] [stderr] Compiling siphasher v1.0.2 [INFO] [stderr] Compiling libm v0.2.16 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Checking getrandom v0.3.4 [INFO] [stderr] Checking dtoa v1.0.11 [INFO] [stderr] Compiling proc-macro2-diagnostics v0.10.1 [INFO] [stderr] Compiling yansi v1.0.1 [INFO] [stderr] Compiling time-core v0.1.8 [INFO] [stderr] Compiling num-conv v0.2.0 [INFO] [stderr] Checking phf_shared v0.11.3 [INFO] [stderr] Checking indexmap v2.13.0 [INFO] [stderr] Checking dtoa-short v0.3.5 [INFO] [stderr] Checking digest v0.10.7 [INFO] [stderr] Checking ring v0.17.14 [INFO] [stderr] Compiling time-macros v0.2.27 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[stderr] Compiling multer v3.1.0 [INFO] [stderr] Compiling stable-pattern v0.1.0 [INFO] [stderr] Compiling figment v0.10.19 [INFO] [stderr] Compiling futures v0.3.32 [INFO] [stderr] Checking chapter11-tests v0.1.0 (/opt/rustwide/workdir/chapter11-tests) [INFO] [stderr] Compiling smallvec v1.15.1 [INFO] [stderr] Compiling either v1.15.0 [INFO] [stderr] Checking rustix v1.1.4 [INFO] [stderr] Checking cipher v0.4.4 [INFO] [stderr] Compiling rocket v0.5.1 [INFO] [stderr] Checking aliasable v0.1.3 [INFO] [stderr] Checking chapter21-web-server-project v0.1.0 (/opt/rustwide/workdir/chapter21-web-server-project) [INFO] [stderr] Checking num_cpus v1.17.0 [INFO] [stderr] Checking blowfish v0.9.1 [INFO] [stderr] Checking strum v0.26.3 [INFO] [stderr] Checking chapter13-functional-features v0.1.0 (/opt/rustwide/workdir/chapter13-functional-features) [INFO] [stderr] Checking bcrypt v0.18.0 [INFO] [stdout] warning: function `add` is never used [INFO] [stdout] --> chapter11-tests/src/bin/tests.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn add(a: u32, b: u32) -> u32 { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let mut v1 = vec![1, 2, 3]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1_iter` [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let v1_iter = v1.iter(); // & [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_v1_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1_iter` [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let v1_iter = v1.iter_mut(); // &mut [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_v1_iter` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `count` [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let count = v1.iter().count(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `collect` [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let collect: Vec = v1.iter().copied().collect(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_collect` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter10-generic-traits-lifetimes v0.1.0 (/opt/rustwide/workdir/chapter10-generic-traits-lifetimes) [INFO] [stdout] warning: unused variable: `closure` [INFO] [stdout] --> chapter13-functional-features/src/bin/closures.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let closure = |num: u32| -> u32 { num }; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_closure` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter03-common-concepts v0.1.0 (/opt/rustwide/workdir/chapter03-common-concepts) [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> chapter13-functional-features/src/bin/closures.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let s = closure(String::from("hello")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking appendix v0.1.0 (/opt/rustwide/workdir/appendix) [INFO] [stdout] warning: unused variable: `closure` [INFO] [stdout] --> chapter13-functional-features/src/bin/closures.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let closure = |num: u32| -> u32 { num }; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_closure` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> chapter13-functional-features/src/bin/closures.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let s = closure(String::from("hello")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/traits.rs:49:24 [INFO] [stdout] | [INFO] [stdout] 49 | fn some_function(t: &T, u: &U) -> impl Display [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter16-concurrency v0.1.0 (/opt/rustwide/workdir/chapter16-concurrency) [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/traits.rs:49:31 [INFO] [stdout] | [INFO] [stdout] 49 | fn some_function(t: &T, u: &U) -> impl Display [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `some_function` is never used [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/traits.rs:49:4 [INFO] [stdout] | [INFO] [stdout] 49 | fn some_function(t: &T, u: &U) -> impl Display [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter18-object-oriented v0.1.0 (/opt/rustwide/workdir/chapter18-object-oriented) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let mut v1 = vec![1, 2, 3]; [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1_iter` [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let v1_iter = v1.iter(); // & [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_v1_iter` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v1_iter` [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let v1_iter = v1.iter_mut(); // &mut [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_v1_iter` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `count` [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let count = v1.iter().count(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_count` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `collect` [INFO] [stdout] --> chapter13-functional-features/src/bin/iterator.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let collect: Vec = v1.iter().copied().collect(); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_collect` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter01-helloworld v0.1.0 (/opt/rustwide/workdir/chapter01-helloworld) [INFO] [stderr] Checking chapter09-error v0.1.0 (/opt/rustwide/workdir/chapter09-error) [INFO] [stderr] Checking chapter15-smart-pointer v0.1.0 (/opt/rustwide/workdir/chapter15-smart-pointer) [INFO] [stdout] warning: unused variable: `result` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/generic.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let result = largest(&number_list); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `x` is never read [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/generic.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | struct Point { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 23 | x: T, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `x` and `mix` are never used [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/generic.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 27 | impl Point { [INFO] [stdout] | ---------------------- methods in this implementation [INFO] [stdout] 28 | fn x(&self) -> &T { [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn mix(self, other: Point) -> Point { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter14-cargo v0.1.0 (/opt/rustwide/workdir/chapter14-cargo) [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_rc.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let b = Cons(3, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_rc.rs:20:13 [INFO] [stdout] | [INFO] [stdout] 20 | let c = Cons(4, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/deref.rs:12:14 [INFO] [stdout] | [INFO] [stdout] 12 | fn hello(name: &str) {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> chapter09-error/src/bin/panic.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let home: IpAddr = "127.0.0.1" [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Point` is never constructed [INFO] [stdout] --> appendix/src/bin/c.rs:25:12 [INFO] [stdout] | [INFO] [stdout] 25 | struct Point { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter07-crates-and-modules v0.1.0 (/opt/rustwide/workdir/chapter07-crates-and-modules) [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> chapter18-object-oriented/src/bin/oop_features.rs:64:27 [INFO] [stdout] | [INFO] [stdout] 64 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `home` [INFO] [stdout] --> chapter09-error/src/bin/panic.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let home: IpAddr = "127.0.0.1" [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_home` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter05-structs v0.1.0 (/opt/rustwide/workdir/chapter05-structs) [INFO] [stdout] warning: unused variable: `result` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/generic.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let result = largest(&number_list); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `x` is never read [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/generic.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 22 | struct Point { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 23 | x: T, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `x` and `mix` are never used [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/generic.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 27 | impl Point { [INFO] [stdout] | ---------------------- methods in this implementation [INFO] [stdout] 28 | fn x(&self) -> &T { [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn mix(self, other: Point) -> Point { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter08-collections v0.1.0 (/opt/rustwide/workdir/chapter08-collections) [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/drop.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let c = CustomSmartPointer { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut v: Vec = Vec::new(); // omitted type if compiler can infer [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut v: Vec = Vec::new(); // omitted type if compiler can infer [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `third` [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let third = v.get(2); // will return None if out of bounds [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_third` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | let row = vec![ [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:21:13 [INFO] [stdout] | [INFO] [stdout] 21 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [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] 21 - Int(i32), [INFO] [stdout] 21 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:22:15 [INFO] [stdout] | [INFO] [stdout] 22 | Float(f64), [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] 22 - Float(f64), [INFO] [stdout] 22 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:23:14 [INFO] [stdout] | [INFO] [stdout] 23 | Text(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] 23 - Text(String), [INFO] [stdout] 23 + Text(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_weak.rs:11:14 [INFO] [stdout] | [INFO] [stdout] 11 | Cons(i32, RefCell>), [INFO] [stdout] | ---- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [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] 11 - Cons(i32, RefCell>), [INFO] [stdout] 11 + Cons((), RefCell>), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `value` and `children` are never read [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_weak.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 23 | struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 24 | value: i32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 25 | parent: RefCell>, [INFO] [stdout] 26 | children: RefCell>>, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `string3` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/lifetime.rs:12:13 [INFO] [stdout] | [INFO] [stdout] 12 | let string3 = String::from("'b"); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_string3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `string3` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/lifetime.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let string3 = String::from("'a"); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_string3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `announce` is never used [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/lifetime.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 37 | impl<'a> ImportantExcerpt<'a> { [INFO] [stdout] | ----------------------------- method in this implementation [INFO] [stdout] 38 | fn announce<'b>(&self, announcement: &'b str) -> &'b str { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter19-patterns-and-matching v0.1.0 (/opt/rustwide/workdir/chapter19-patterns-and-matching) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter08-collections/src/bin/string.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let mut s = String::new(); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter08-collections/src/bin/string.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let mut s2 = String::from("hello world! "); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> chapter08-collections/src/bin/string.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let mut s = String::new(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> chapter08-collections/src/bin/string.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let s = format!("{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] --> chapter08-collections/src/bin/string.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let s1 = &s[0..3]; // unsafe, if 0..2 it will panic [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] --> chapter08-collections/src/bin/string.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let mut s = String::new(); [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter08-collections/src/bin/string.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let mut s2 = String::from("hello world! "); [INFO] [stdout] | ----^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> chapter08-collections/src/bin/string.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let mut s = String::new(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> chapter08-collections/src/bin/string.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let s = format!("{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] --> chapter08-collections/src/bin/string.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let s1 = &s[0..3]; // unsafe, if 0..2 it will panic [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter04-ownership v0.1.0 (/opt/rustwide/workdir/chapter04-ownership) [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_rc.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let b = Cons(3, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_rc.rs:20:13 [INFO] [stdout] | [INFO] [stdout] 20 | let c = Cons(4, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_rc.rs:10:14 [INFO] [stdout] | [INFO] [stdout] 10 | Cons(i32, Rc), [INFO] [stdout] | ---- ^^^ ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [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] 10 - Cons(i32, Rc), [INFO] [stdout] 10 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> chapter16-concurrency/src/bin/message_passing.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let err = rx.try_recv().unwrap_err(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `readme_file` [INFO] [stdout] --> chapter09-error/src/bin/result.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let readme_file = readme_file_result.unwrap_or_else(|error| match error.kind() { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_readme_file` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `readme_file` [INFO] [stdout] --> chapter09-error/src/bin/result.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let readme_file = File::open("README.md").expect("open file error"); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_readme_file` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_content_from_file` is never used [INFO] [stdout] --> chapter09-error/src/bin/result.rs:21:8 [INFO] [stdout] | [INFO] [stdout] 21 | fn read_content_from_file() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `read_content_from_file_simple` is never used [INFO] [stdout] --> chapter09-error/src/bin/result.rs:34:8 [INFO] [stdout] | [INFO] [stdout] 34 | fn read_content_from_file_simple() -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `last_char_of_first_line` is never used [INFO] [stdout] --> chapter09-error/src/bin/result.rs:41:8 [INFO] [stdout] | [INFO] [stdout] 41 | fn last_char_of_first_line(text: &str) -> Option { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter06-enums-and-match v0.1.0 (/opt/rustwide/workdir/chapter06-enums-and-match) [INFO] [stdout] warning: unused import: `std::ops::Deref` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_ref_cell.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::ops::Deref; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `1` is never read [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_ref_cell.rs:24:28 [INFO] [stdout] | [INFO] [stdout] 24 | Cons(RefCell, Rc), [INFO] [stdout] | ---- ^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [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] 24 - Cons(RefCell, Rc), [INFO] [stdout] 24 + Cons(RefCell, ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `string3` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/lifetime.rs:12:13 [INFO] [stdout] | [INFO] [stdout] 12 | let string3 = String::from("'b"); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_string3` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `string3` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/lifetime.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let string3 = String::from("'a"); [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_string3` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `announce` is never used [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/lifetime.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 37 | impl<'a> ImportantExcerpt<'a> { [INFO] [stdout] | ----------------------------- method in this implementation [INFO] [stdout] 38 | fn announce<'b>(&self, announcement: &'b str) -> &'b str { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/deref.rs:12:14 [INFO] [stdout] | [INFO] [stdout] 12 | fn hello(name: &str) {} [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `IpAddrKind` is never used [INFO] [stdout] --> chapter06-enums-and-match/src/bin/enums_and_match.rs:2:6 [INFO] [stdout] | [INFO] [stdout] 2 | enum IpAddrKind { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read [INFO] [stdout] --> chapter06-enums-and-match/src/bin/enums_and_match.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | V4(u8, u8, u8, u8), [INFO] [stdout] | -- ^^ ^^ ^^ ^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `IpAddr` 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] 8 - V4(u8, u8, u8, u8), [INFO] [stdout] 8 + V4((), (), (), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter06-enums-and-match/src/bin/enums_and_match.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | V6(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `IpAddr` 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] 9 - V6(String), [INFO] [stdout] 9 + V6(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed [INFO] [stdout] --> chapter06-enums-and-match/src/bin/enums_and_match.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 12 | enum Message { [INFO] [stdout] | ------- variants in this enum [INFO] [stdout] 13 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] 14 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^ [INFO] [stdout] 15 | Write(String), [INFO] [stdout] 16 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling synstructure v0.13.2 [INFO] [stderr] Compiling proc-macro-error2 v2.0.1 [INFO] [stderr] Checking tempfile v3.26.0 [INFO] [stdout] warning: unused variable: `list` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_box.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let list = List::Cons(1, Box::new(List::Cons(2, Box::new(List::Nil)))); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_list` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0` and `1` are never read [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_box.rs:9:14 [INFO] [stdout] | [INFO] [stdout] 9 | Cons(i32, Box), [INFO] [stdout] | ---- ^^^ ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [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] 9 - Cons(i32, Box), [INFO] [stdout] 9 + Cons((), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:42:20 [INFO] [stdout] | [INFO] [stdout] 42 | let Point { x: a, y: b } = p; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:42:26 [INFO] [stdout] | [INFO] [stdout] 42 | let Point { x: a, y: b } = p; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:43:17 [INFO] [stdout] | [INFO] [stdout] 43 | let Point { x, y } = p; // shorthand [INFO] [stdout] | ^ help: try ignoring the field: `x: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:43:20 [INFO] [stdout] | [INFO] [stdout] 43 | let Point { x, y } = p; // shorthand [INFO] [stdout] | ^ help: try ignoring the field: `y: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `feet` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:84:11 [INFO] [stdout] | [INFO] [stdout] 84 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_feet` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `inches` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:84:17 [INFO] [stdout] | [INFO] [stdout] 84 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_inches` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:84:34 [INFO] [stdout] | [INFO] [stdout] 84 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^ help: try ignoring the field: `x: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:84:37 [INFO] [stdout] | [INFO] [stdout] 84 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^ help: try ignoring the field: `y: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:92:10 [INFO] [stdout] | [INFO] [stdout] 92 | let (a, .., d) = (1, 2, 3, 4); // ignore remaining parts of a value(unambiguous) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:92:17 [INFO] [stdout] | [INFO] [stdout] 92 | let (a, .., d) = (1, 2, 3, 4); // ignore remaining parts of a value(unambiguous) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> chapter07-crates-and-modules/src/bin/paths.rs:23:17 [INFO] [stdout] | [INFO] [stdout] 22 | pub struct SubInner { [INFO] [stdout] | -------- fields in this struct [INFO] [stdout] 23 | pub x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 24 | y: i32, // private [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `SubInnerEnum` is never used [INFO] [stdout] --> chapter07-crates-and-modules/src/bin/paths.rs:32:18 [INFO] [stdout] | [INFO] [stdout] 32 | pub enum SubInnerEnum { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling devise_core v0.4.2 [INFO] [stdout] warning: unused variable: `score` [INFO] [stdout] --> chapter08-collections/src/bin/hash_map.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let score = scores.get(&team_name).copied(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_score` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `best_team_name` [INFO] [stdout] --> chapter08-collections/src/bin/hash_map.rs:18:10 [INFO] [stdout] | [INFO] [stdout] 18 | let (best_team_name, _) = scores.iter().max_by_key(|&(_, v)| v).expect("empty"); [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_team_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `employees` [INFO] [stdout] --> chapter08-collections/src/bin/hash_map.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let employees = if let Some(employees) = company.get(&dept) { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_employees` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `x` and `y` are never read [INFO] [stdout] --> chapter07-crates-and-modules/src/bin/paths.rs:23:17 [INFO] [stdout] | [INFO] [stdout] 22 | pub struct SubInner { [INFO] [stdout] | -------- fields in this struct [INFO] [stdout] 23 | pub x: i32, [INFO] [stdout] | ^ [INFO] [stdout] 24 | y: i32, // private [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `SubInnerEnum` is never used [INFO] [stdout] --> chapter07-crates-and-modules/src/bin/paths.rs:32:18 [INFO] [stdout] | [INFO] [stdout] 32 | pub enum SubInnerEnum { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling hyper v0.14.32 [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/traits.rs:49:24 [INFO] [stdout] | [INFO] [stdout] 49 | fn some_function(t: &T, u: &U) -> impl Display [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `u` [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/traits.rs:49:31 [INFO] [stdout] | [INFO] [stdout] 49 | fn some_function(t: &T, u: &U) -> impl Display [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_u` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `some_function` is never used [INFO] [stdout] --> chapter10-generic-traits-lifetimes/src/bin/traits.rs:49:4 [INFO] [stdout] | [INFO] [stdout] 49 | fn some_function(t: &T, u: &U) -> impl Display [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking ahash v0.8.12 [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/drop.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let c = CustomSmartPointer { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking ppv-lite86 v0.2.21 [INFO] [stdout] warning: unused variable: `score` [INFO] [stdout] --> chapter08-collections/src/bin/hash_map.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let score = scores.get(&team_name).copied(); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_score` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `best_team_name` [INFO] [stdout] --> chapter08-collections/src/bin/hash_map.rs:18:10 [INFO] [stdout] | [INFO] [stdout] 18 | let (best_team_name, _) = scores.iter().max_by_key(|&(_, v)| v).expect("empty"); [INFO] [stdout] | ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_best_team_name` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `employees` [INFO] [stdout] --> chapter08-collections/src/bin/hash_map.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | let employees = if let Some(employees) = company.get(&dept) { [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_employees` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Deref` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_ref_cell.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::ops::Deref; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:10:17 [INFO] [stdout] | [INFO] [stdout] 10 | if let Some(i) = x { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:13:14 [INFO] [stdout] | [INFO] [stdout] 13 | let Some(i) = x else { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:17:20 [INFO] [stdout] | [INFO] [stdout] 17 | while let Some(i) = x { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:21:10 [INFO] [stdout] | [INFO] [stdout] 21 | for (index, value) in v.iter().enumerate() {} [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | for (index, value) in v.iter().enumerate() {} [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:23:10 [INFO] [stdout] | [INFO] [stdout] 23 | let (x, y) = (1, 2); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let (x, y) = (1, 2); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:25:22 [INFO] [stdout] | [INFO] [stdout] 25 | fn coordinates(&(x, y): &(i32, i32)) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:25:25 [INFO] [stdout] | [INFO] [stdout] 25 | fn coordinates(&(x, y): &(i32, i32)) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:42:20 [INFO] [stdout] | [INFO] [stdout] 42 | let Point { x: a, y: b } = p; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:42:26 [INFO] [stdout] | [INFO] [stdout] 42 | let Point { x: a, y: b } = p; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:43:17 [INFO] [stdout] | [INFO] [stdout] 43 | let Point { x, y } = p; // shorthand [INFO] [stdout] | ^ help: try ignoring the field: `x: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:43:20 [INFO] [stdout] | [INFO] [stdout] 43 | let Point { x, y } = p; // shorthand [INFO] [stdout] | ^ help: try ignoring the field: `y: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `feet` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:84:11 [INFO] [stdout] | [INFO] [stdout] 84 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_feet` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `inches` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:84:17 [INFO] [stdout] | [INFO] [stdout] 84 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_inches` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:84:34 [INFO] [stdout] | [INFO] [stdout] 84 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^ help: try ignoring the field: `x: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:84:37 [INFO] [stdout] | [INFO] [stdout] 84 | let ((feet, inches), Point { x, y }) = ((3, 10), Point { x: 3, y: -10 }); [INFO] [stdout] | ^ help: try ignoring the field: `y: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:92:10 [INFO] [stdout] | [INFO] [stdout] 92 | let (a, .., d) = (1, 2, 3, 4); // ignore remaining parts of a value(unambiguous) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `d` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:92:17 [INFO] [stdout] | [INFO] [stdout] 92 | let (a, .., d) = (1, 2, 3, 4); // ignore remaining parts of a value(unambiguous) [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_d` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Rgb` is never constructed [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:55:9 [INFO] [stdout] | [INFO] [stdout] 54 | enum Color { [INFO] [stdout] | ----- variant in this enum [INFO] [stdout] 55 | Rgb(i32, i32, i32), [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Move`, and `Write` are never constructed [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:59:9 [INFO] [stdout] | [INFO] [stdout] 58 | enum Message { [INFO] [stdout] | ------- variants in this enum [INFO] [stdout] 59 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] 60 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^ [INFO] [stdout] 61 | Write(String), [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `foo` is never used [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/pattern_syntax.rs:87:8 [INFO] [stdout] | [INFO] [stdout] 87 | fn foo(_: i32, y: i32) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `IpAddrKind` is never used [INFO] [stdout] --> chapter06-enums-and-match/src/bin/enums_and_match.rs:2:6 [INFO] [stdout] | [INFO] [stdout] 2 | enum IpAddrKind { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, `2`, and `3` are never read [INFO] [stdout] --> chapter06-enums-and-match/src/bin/enums_and_match.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | V4(u8, u8, u8, u8), [INFO] [stdout] | -- ^^ ^^ ^^ ^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this variant [INFO] [stdout] | [INFO] [stdout] = note: `IpAddr` 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] 8 - V4(u8, u8, u8, u8), [INFO] [stdout] 8 + V4((), (), (), ()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter06-enums-and-match/src/bin/enums_and_match.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | V6(String), [INFO] [stdout] | -- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `IpAddr` 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] 9 - V6(String), [INFO] [stdout] 9 + V6(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed [INFO] [stdout] --> chapter06-enums-and-match/src/bin/enums_and_match.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 12 | enum Message { [INFO] [stdout] | ------- variants in this enum [INFO] [stdout] 13 | Quit, [INFO] [stdout] | ^^^^ [INFO] [stdout] 14 | Move { x: i32, y: i32 }, [INFO] [stdout] | ^^^^ [INFO] [stdout] 15 | Write(String), [INFO] [stdout] 16 | ChangeColor(i32, i32, i32), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut v: Vec = Vec::new(); // omitted type if compiler can infer [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:2:9 [INFO] [stdout] | [INFO] [stdout] 2 | let mut v: Vec = Vec::new(); // omitted type if compiler can infer [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `third` [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let third = v.get(2); // will return None if out of bounds [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_third` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> chapter08-collections/src/bin/vector.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | 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: `list` [INFO] [stdout] --> chapter15-smart-pointer/src/bin/ptr_box.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let list = List::Cons(1, Box::new(List::Cons(2, Box::new(List::Nil)))); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_list` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> chapter18-object-oriented/src/bin/oop_features.rs:64:27 [INFO] [stdout] | [INFO] [stdout] 64 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `readme_file` [INFO] [stdout] --> chapter09-error/src/bin/result.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let readme_file = readme_file_result.unwrap_or_else(|error| match error.kind() { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_readme_file` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `readme_file` [INFO] [stdout] --> chapter09-error/src/bin/result.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let readme_file = File::open("README.md").expect("open file error"); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_readme_file` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:10:17 [INFO] [stdout] | [INFO] [stdout] 10 | if let Some(i) = x { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:13:14 [INFO] [stdout] | [INFO] [stdout] 13 | let Some(i) = x else { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:17:20 [INFO] [stdout] | [INFO] [stdout] 17 | while let Some(i) = x { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:21:10 [INFO] [stdout] | [INFO] [stdout] 21 | for (index, value) in v.iter().enumerate() {} [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:21:17 [INFO] [stdout] | [INFO] [stdout] 21 | for (index, value) in v.iter().enumerate() {} [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:23:10 [INFO] [stdout] | [INFO] [stdout] 23 | let (x, y) = (1, 2); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:23:13 [INFO] [stdout] | [INFO] [stdout] 23 | let (x, y) = (1, 2); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:25:22 [INFO] [stdout] | [INFO] [stdout] 25 | fn coordinates(&(x, y): &(i32, i32)) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> chapter19-patterns-and-matching/src/bin/patterns_places.rs:25:25 [INFO] [stdout] | [INFO] [stdout] 25 | fn coordinates(&(x, y): &(i32, i32)) {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stdout] warning: unused variable: `err` [INFO] [stdout] --> chapter16-concurrency/src/bin/message_passing.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let err = rx.try_recv().unwrap_err(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling zerofrom-derive v0.1.6 [INFO] [stderr] Compiling tokio-macros v2.6.1 [INFO] [stderr] Compiling yoke-derive v0.8.1 [INFO] [stderr] Compiling futures-macro v0.3.32 [INFO] [stderr] Compiling zerovec-derive v0.11.2 [INFO] [stderr] Compiling displaydoc v0.2.5 [INFO] [stderr] Compiling tracing-attributes v0.1.31 [INFO] [stderr] Compiling cssparser-macros v0.6.1 [INFO] [stderr] Compiling html5ever v0.27.0 [INFO] [stderr] Compiling derive_more v0.99.20 [INFO] [stderr] Compiling hello-macro-attribute v0.1.0 (/opt/rustwide/workdir/chapter20-advanced-features/hello-macro-attribute) [INFO] [stderr] Compiling hello-macro-derive v0.1.0 (/opt/rustwide/workdir/chapter20-advanced-features/hello-macro-derive) [INFO] [stderr] Compiling pear_codegen v0.2.9 [INFO] [stderr] Compiling thiserror-impl v2.0.18 [INFO] [stderr] Compiling ref-cast-impl v1.0.25 [INFO] [stderr] Checking chapter20-advanced-features v0.1.0 (/opt/rustwide/workdir/chapter20-advanced-features) [INFO] [stderr] Compiling inherent v1.0.13 [INFO] [stderr] Compiling async-stream-impl v0.3.6 [INFO] [stderr] Compiling devise_codegen v0.4.2 [INFO] [stderr] Compiling derive_more-impl v2.1.1 [INFO] [stderr] Compiling phf_generator v0.11.3 [INFO] [stderr] Compiling phf_generator v0.10.0 [INFO] [stderr] Checking pear v0.2.9 [INFO] [stderr] Compiling phf_codegen v0.11.3 [INFO] [stderr] Compiling string_cache_codegen v0.5.4 [INFO] [stderr] Compiling phf_codegen v0.10.0 [INFO] [stderr] Checking async-stream v0.3.6 [INFO] [stderr] Compiling phf_macros v0.11.3 [INFO] [stderr] Compiling sea-bae v0.2.1 [INFO] [stderr] Compiling async-trait v0.1.89 [INFO] [stderr] Compiling selectors v0.25.0 [INFO] [stderr] Checking zerofrom v0.1.6 [INFO] [stderr] Checking yoke v0.8.1 [INFO] [stderr] Checking zerovec v0.11.5 [INFO] [stderr] Checking zerotrie v0.2.3 [INFO] [stderr] Compiling markup5ever v0.12.1 [INFO] [stderr] Checking rsa v0.9.10 [INFO] [stderr] Compiling devise v0.4.2 [INFO] [stderr] Checking phf v0.11.3 [INFO] [stderr] Compiling ouroboros_macro v0.18.5 [INFO] [stderr] Checking tinystr v0.8.2 [INFO] [stderr] Checking potential_utf v0.1.4 [INFO] [stderr] Checking futures-executor v0.3.32 [INFO] [stderr] Compiling rocket_http v0.5.1 [INFO] [stderr] Compiling sea-orm-macros v1.1.19 [INFO] [stderr] Checking cssparser v0.31.2 [INFO] [stderr] Checking icu_collections v2.1.1 [INFO] [stderr] Checking thiserror v2.0.18 [INFO] [stderr] Checking icu_locale_core v2.1.1 [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let f: Thunk = Box::new(|_| true); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:16:13 [INFO] [stdout] | [INFO] [stdout] 16 | let num: u32 = match "err".trim().parse() { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:26:25 [INFO] [stdout] | [INFO] [stdout] 26 | fn generic_sized(t: T) {} // T: Sized [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:27:27 [INFO] [stdout] | [INFO] [stdout] 27 | fn generic(t: &T) {} // only Sized can be used with ?, T can be Sized or not Sized [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Millimeters` is never constructed [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | struct Millimeters(u32); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `Kilometers` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:6:10 [INFO] [stdout] | [INFO] [stdout] 6 | type Kilometers = u32; // synonym for u32, not a new type [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `Result` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:7:10 [INFO] [stdout] | [INFO] [stdout] 7 | type Result = std::result::Result; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `bar` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | fn bar() -> ! { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `generic_sized` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:26:8 [INFO] [stdout] | [INFO] [stdout] 26 | fn generic_sized(t: T) {} // T: Sized [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `generic` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:27:8 [INFO] [stdout] | [INFO] [stdout] 27 | fn generic(t: &T) {} // only Sized can be used with ?, T can be Sized or not Sized [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | let f: Thunk = Box::new(|_| true); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `num` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:16:13 [INFO] [stdout] | [INFO] [stdout] 16 | let num: u32 = match "err".trim().parse() { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:26:25 [INFO] [stdout] | [INFO] [stdout] 26 | fn generic_sized(t: T) {} // T: Sized [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `t` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_types.rs:27:27 [INFO] [stdout] | [INFO] [stdout] 27 | fn generic(t: &T) {} // only Sized can be used with ?, T can be Sized or not Sized [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_t` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> chapter20-advanced-features/src/bin/unsafe_rust.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let r = address as *const i32; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Foo` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/unsafe_rust.rs:51:18 [INFO] [stdout] | [INFO] [stdout] 51 | unsafe trait Foo {} [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `answer` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_functions_and_closures.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | let answer = do_twice(add_one, 5); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_answer` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `list_of_statuses` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_functions_and_closures.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let list_of_statuses: Vec = (0u32..20).map(Status::Value).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_statuses` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `Iterator` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_traits.rs:7:15 [INFO] [stdout] | [INFO] [stdout] 7 | pub trait Iterator { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Point` is never constructed [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_traits.rs:15:12 [INFO] [stdout] | [INFO] [stdout] 15 | struct Point { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Millimeters` is never constructed [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_traits.rs:30:12 [INFO] [stdout] | [INFO] [stdout] 30 | struct Millimeters(u32); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Meters` is never constructed [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_traits.rs:31:12 [INFO] [stdout] | [INFO] [stdout] 31 | struct Meters(u32); [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `OutlinePrint` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_traits.rs:85:11 [INFO] [stdout] | [INFO] [stdout] 85 | trait OutlinePrint: Display { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking chapter02-guessing-game v0.1.0 (/opt/rustwide/workdir/chapter02-guessing-game) [INFO] [stderr] Checking derive_more v2.1.1 [INFO] [stdout] warning: unused variable: `r` [INFO] [stdout] --> chapter20-advanced-features/src/bin/unsafe_rust.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | let r = address as *const i32; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_r` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `answer` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_functions_and_closures.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 11 | let answer = do_twice(add_one, 5); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_answer` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `list_of_statuses` [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_functions_and_closures.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let list_of_statuses: Vec = (0u32..20).map(Status::Value).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_list_of_statuses` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_functions_and_closures.rs:13:15 [INFO] [stdout] | [INFO] [stdout] 13 | Value(u32), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [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] 13 - Value(u32), [INFO] [stdout] 13 + Value(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `Stop` is never constructed [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_functions_and_closures.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 12 | enum Status { [INFO] [stdout] | ------ variant in this enum [INFO] [stdout] 13 | Value(u32), [INFO] [stdout] 14 | Stop, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `returns_closure` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_functions_and_closures.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | fn returns_closure() -> impl Fn(i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `returns_init_closure` is never used [INFO] [stdout] --> chapter20-advanced-features/src/bin/advanced_functions_and_closures.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 23 | fn returns_init_closure(init: i32) -> impl Fn(i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking icu_provider v2.1.1 [INFO] [stderr] Checking serde v1.0.228 [INFO] [stderr] Checking ouroboros v0.18.5 [INFO] [stderr] Checking icu_normalizer v2.1.1 [INFO] [stderr] Checking icu_properties v2.1.2 [INFO] [stderr] Checking string_cache v0.8.9 [INFO] [stderr] Checking serde_urlencoded v0.7.1 [INFO] [stderr] Checking chrono v0.4.44 [INFO] [stderr] Checking serde_spanned v0.6.9 [INFO] [stderr] Checking toml_datetime v0.6.11 [INFO] [stderr] Checking ubyte v0.10.4 [INFO] [stderr] Compiling rocket_codegen v0.5.1 [INFO] [stderr] Checking toml_edit v0.22.27 [INFO] [stderr] Checking idna_adapter v1.2.1 [INFO] [stderr] Checking idna v1.1.0 [INFO] [stderr] Checking url v2.5.8 [INFO] [stderr] Checking tokio-stream v0.1.18 [INFO] [stderr] Checking hyper v1.8.1 [INFO] [stderr] Checking tokio-rustls v0.26.4 [INFO] [stderr] Checking tower v0.5.3 [INFO] [stderr] Checking tokio-util v0.7.18 [INFO] [stderr] Checking sea-query v0.32.7 [INFO] [stderr] Checking sqlx-core v0.8.6 [INFO] [stderr] Checking tower-http v0.6.8 [INFO] [stderr] Checking h2 v0.3.27 [INFO] [stderr] Checking scraper v0.20.0 [INFO] [stderr] Checking hyper-util v0.1.20 [INFO] [stderr] Checking toml v0.8.23 [INFO] [stderr] Checking hyper-rustls v0.27.7 [INFO] [stderr] Checking reqwest v0.12.28 [INFO] [stderr] Checking sqlx-mysql v0.8.6 [INFO] [stderr] Checking trpl v0.3.0 [INFO] [stderr] Checking chapter17-async-await v0.1.0 (/opt/rustwide/workdir/chapter17-async-await) [INFO] [stderr] Checking sqlx v0.8.6 [INFO] [stderr] Checking sea-query-binder v0.7.0 [INFO] [stderr] Checking sea-orm v1.1.19 [INFO] [stderr] Checking rocket-web-application v0.1.0 (/opt/rustwide/workdir/rocket-web-application) [INFO] [stdout] warning: unused import: `UserServiceError` [INFO] [stdout] --> rocket-web-application/src/handlers/user_handler.rs:3:50 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::services::user_service::{UserService, UserServiceError}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rocket::http::Status` [INFO] [stdout] --> rocket-web-application/src/handlers/user_handler.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use rocket::http::Status; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `UserServiceError` [INFO] [stdout] --> rocket-web-application/src/handlers/user_handler.rs:3:50 [INFO] [stdout] | [INFO] [stdout] 3 | use crate::services::user_service::{UserService, UserServiceError}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rocket::http::Status` [INFO] [stdout] --> rocket-web-application/src/handlers/user_handler.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use rocket::http::Status; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `status` [INFO] [stdout] --> rocket-web-application/src/error.rs:49:14 [INFO] [stdout] | [INFO] [stdout] 49 | let (status, body_struct) = match self { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `status` [INFO] [stdout] --> rocket-web-application/src/error.rs:49:14 [INFO] [stdout] | [INFO] [stdout] 49 | let (status, body_struct) = match self { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_status` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> rocket-web-application/src/error.rs:17:19 [INFO] [stdout] | [INFO] [stdout] 17 | DatabaseError(DbErr), [INFO] [stdout] | ------------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `AppError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [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 - DatabaseError(DbErr), [INFO] [stdout] 17 + DatabaseError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `BadRequest`, `InternalServerError`, and `UserService` are never constructed [INFO] [stdout] --> rocket-web-application/src/error.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 16 | pub enum AppError { [INFO] [stdout] | -------- variants in this enum [INFO] [stdout] 17 | DatabaseError(DbErr), [INFO] [stdout] 18 | BadRequest(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 22 | InternalServerError(String), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 23 | // 可以直接包裹局部错误，或者映射为具体变体 [INFO] [stdout] 24 | UserService(UserServiceError), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `AppError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `AppResult` is never used [INFO] [stdout] --> rocket-web-application/src/error.rs:95:10 [INFO] [stdout] | [INFO] [stdout] 95 | pub type AppResult = Result; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> rocket-web-application/src/error.rs:17:19 [INFO] [stdout] | [INFO] [stdout] 17 | DatabaseError(DbErr), [INFO] [stdout] | ------------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `AppError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [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 - DatabaseError(DbErr), [INFO] [stdout] 17 + DatabaseError(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `BadRequest`, `InternalServerError`, and `UserService` are never constructed [INFO] [stdout] --> rocket-web-application/src/error.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 16 | pub enum AppError { [INFO] [stdout] | -------- variants in this enum [INFO] [stdout] 17 | DatabaseError(DbErr), [INFO] [stdout] 18 | BadRequest(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 22 | InternalServerError(String), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 23 | // 可以直接包裹局部错误，或者映射为具体变体 [INFO] [stdout] 24 | UserService(UserServiceError), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `AppError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `AppResult` is never used [INFO] [stdout] --> rocket-web-application/src/error.rs:95:10 [INFO] [stdout] | [INFO] [stdout] 95 | pub type AppResult = Result; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 48.26s [INFO] running `Command { std: "docker" "inspect" "7fffbf6b519bf18cc598a294638ddf23cb425d64ec4cef63cbfd25d700b083ae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7fffbf6b519bf18cc598a294638ddf23cb425d64ec4cef63cbfd25d700b083ae", kill_on_drop: false }` [INFO] [stdout] 7fffbf6b519bf18cc598a294638ddf23cb425d64ec4cef63cbfd25d700b083ae