[INFO] cloning repository https://github.com/Sirotyann/rust_hello_world [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sirotyann/rust_hello_world" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirotyann%2Frust_hello_world", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirotyann%2Frust_hello_world'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4b8952ebe13a320cbe65799925cf85d91be6b627 [INFO] testing Sirotyann/rust_hello_world against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSirotyann%2Frust_hello_world" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Sirotyann/rust_hello_world on toolchain 1.60.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Sirotyann/rust_hello_world [INFO] finished tweaking git repo https://github.com/Sirotyann/rust_hello_world [INFO] tweaked toml for git repo https://github.com/Sirotyann/rust_hello_world written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/Sirotyann/rust_hello_world already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5a9472d9260965c7ad5efd65d83619aacce3a1fa164ff631ac2b7393525d7c42 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "5a9472d9260965c7ad5efd65d83619aacce3a1fa164ff631ac2b7393525d7c42", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5a9472d9260965c7ad5efd65d83619aacce3a1fa164ff631ac2b7393525d7c42", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5a9472d9260965c7ad5efd65d83619aacce3a1fa164ff631ac2b7393525d7c42", kill_on_drop: false }` [INFO] [stdout] 5a9472d9260965c7ad5efd65d83619aacce3a1fa164ff631ac2b7393525d7c42 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] d859e1a6ce4496249f8a6959052997d8bb80a752d4f50e8bd0ebff1b9381e43f [INFO] running `Command { std: "docker" "start" "-a" "d859e1a6ce4496249f8a6959052997d8bb80a752d4f50e8bd0ebff1b9381e43f", kill_on_drop: false }` [INFO] [stderr] Compiling rust_hello_world v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/basic/pointers.rs:146:9 [INFO] [stdout] | [INFO] [stdout] 146 | 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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/basic/pointers.rs:148:9 [INFO] [stdout] | [INFO] [stdout] 148 | 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: `j` [INFO] [stdout] --> src/basic/threads.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | for j in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_j` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/basic/threads.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | let mut v = vec![1, 2, 3]; [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: function is never used: `demo` [INFO] [stdout] --> src/module_example.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn demo () { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `CON` [INFO] [stdout] --> src/basic/variables.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | const CON: &str = "I am a const string."; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static is never used: `STA` [INFO] [stdout] --> src/basic/variables.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | static STA: &str = "I am a static string."; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/variables.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | pub fn demo () { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/types.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_tuple` [INFO] [stdout] --> src/basic/types.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | fn demo_tuple() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_array` [INFO] [stdout] --> src/basic/types.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | fn demo_array() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/flow.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_if` [INFO] [stdout] --> src/basic/flow.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn demo_if() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_loop` [INFO] [stdout] --> src/basic/flow.rs:34:4 [INFO] [stdout] | [INFO] [stdout] 34 | fn demo_loop() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_while` [INFO] [stdout] --> src/basic/flow.rs:46:4 [INFO] [stdout] | [INFO] [stdout] 46 | fn demo_while() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_for` [INFO] [stdout] --> src/basic/flow.rs:54:4 [INFO] [stdout] | [INFO] [stdout] 54 | fn demo_for() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_match` [INFO] [stdout] --> src/basic/flow.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn demo_match (some_u8_value:u8) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/ownership.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `takes_ownership` [INFO] [stdout] --> src/basic/ownership.rs:34:4 [INFO] [stdout] | [INFO] [stdout] 34 | fn takes_ownership(some_string: String) -> String { // some_string comes into scope [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `borrow_mut_ownership` [INFO] [stdout] --> src/basic/ownership.rs:39:4 [INFO] [stdout] | [INFO] [stdout] 39 | fn borrow_mut_ownership(some_string: &mut String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_scope` [INFO] [stdout] --> src/basic/ownership.rs:43:4 [INFO] [stdout] | [INFO] [stdout] 43 | fn demo_scope() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_move` [INFO] [stdout] --> src/basic/ownership.rs:51:4 [INFO] [stdout] | [INFO] [stdout] 51 | fn demo_move() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_clone` [INFO] [stdout] --> src/basic/ownership.rs:58:4 [INFO] [stdout] | [INFO] [stdout] 58 | fn demo_clone() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_copy` [INFO] [stdout] --> src/basic/ownership.rs:64:4 [INFO] [stdout] | [INFO] [stdout] 64 | fn demo_copy() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/strings.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/structs.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `name` [INFO] [stdout] --> src/basic/structs.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | name: String, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/structs.rs:28:10 [INFO] [stdout] | [INFO] [stdout] 28 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `age` [INFO] [stdout] --> src/basic/structs.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | age: u8, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/structs.rs:28:10 [INFO] [stdout] | [INFO] [stdout] 28 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/basic/structs.rs:38:4 [INFO] [stdout] | [INFO] [stdout] 38 | fn demo_create() -> User { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `age_plus` [INFO] [stdout] --> src/basic/structs.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | fn age_plus(&mut self) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `build` [INFO] [stdout] --> src/basic/structs.rs:49:8 [INFO] [stdout] | [INFO] [stdout] 49 | fn build(name:String, age:u8) -> User{ [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `x` [INFO] [stdout] --> src/basic/structs.rs:57:5 [INFO] [stdout] | [INFO] [stdout] 57 | x: T, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: `GenPoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/structs.rs:55:10 [INFO] [stdout] | [INFO] [stdout] 55 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> src/basic/structs.rs:58:5 [INFO] [stdout] | [INFO] [stdout] 58 | y: T, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: `GenPoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/structs.rs:55:10 [INFO] [stdout] | [INFO] [stdout] 55 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `x` [INFO] [stdout] --> src/basic/structs.rs:62:8 [INFO] [stdout] | [INFO] [stdout] 62 | fn x(&self) -> &T { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_generic` [INFO] [stdout] --> src/basic/structs.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn demo_generic() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/enums.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/basic/enums.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | V4(String), [INFO] [stdout] | ^^^^^^^^^^ [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] --> src/basic/enums.rs:26:10 [INFO] [stdout] | [INFO] [stdout] 26 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/basic/enums.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | V6(String), [INFO] [stdout] | ^^^^^^^^^^ [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] --> src/basic/enums.rs:26:10 [INFO] [stdout] | [INFO] [stdout] 26 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/basic/enums.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `MALE` [INFO] [stdout] --> src/basic/enums.rs:43:5 [INFO] [stdout] | [INFO] [stdout] 43 | MALE, FEMALE [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Gender` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/enums.rs:41:10 [INFO] [stdout] | [INFO] [stdout] 41 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `FEMALE` [INFO] [stdout] --> src/basic/enums.rs:43:11 [INFO] [stdout] | [INFO] [stdout] 43 | MALE, FEMALE [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Gender` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/enums.rs:41:10 [INFO] [stdout] | [INFO] [stdout] 41 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `prt` [INFO] [stdout] --> src/basic/enums.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | fn prt(&self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_fun` [INFO] [stdout] --> src/basic/enums.rs:52:4 [INFO] [stdout] | [INFO] [stdout] 52 | fn demo_fun() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Person` [INFO] [stdout] --> src/basic/enums.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | struct Person { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_option` [INFO] [stdout] --> src/basic/enums.rs:66:4 [INFO] [stdout] | [INFO] [stdout] 66 | fn demo_option() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Coin` [INFO] [stdout] --> src/basic/enums.rs:87:6 [INFO] [stdout] | [INFO] [stdout] 87 | enum Coin { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `value_in_cents` [INFO] [stdout] --> src/basic/enums.rs:94:4 [INFO] [stdout] | [INFO] [stdout] 94 | fn value_in_cents(coin: Coin) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_match` [INFO] [stdout] --> src/basic/enums.rs:103:4 [INFO] [stdout] | [INFO] [stdout] 103 | fn demo_match() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_if_let` [INFO] [stdout] --> src/basic/enums.rs:110:4 [INFO] [stdout] | [INFO] [stdout] 110 | fn demo_if_let(num:Option) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/functions.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn demo () { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_closure` [INFO] [stdout] --> src/basic/functions.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn demo_closure() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Cacher` [INFO] [stdout] --> src/basic/functions.rs:52:8 [INFO] [stdout] | [INFO] [stdout] 52 | struct Cacher [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/basic/functions.rs:62:8 [INFO] [stdout] | [INFO] [stdout] 62 | fn value(&mut self, arg: u32) -> u32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_closure_as_param` [INFO] [stdout] --> src/basic/functions.rs:74:4 [INFO] [stdout] | [INFO] [stdout] 74 | fn demo_closure_as_param() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_capture_env` [INFO] [stdout] --> src/basic/functions.rs:84:4 [INFO] [stdout] | [INFO] [stdout] 84 | fn demo_capture_env() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/traits.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `create_art` [INFO] [stdout] --> src/basic/traits.rs:21:4 [INFO] [stdout] | [INFO] [stdout] 21 | fn create_art() -> NewsArticle { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `create_tw` [INFO] [stdout] --> src/basic/traits.rs:30:4 [INFO] [stdout] | [INFO] [stdout] 30 | fn create_tw() -> Tweet { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/basic/traits.rs:38:4 [INFO] [stdout] | [INFO] [stdout] 38 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `content` [INFO] [stdout] --> src/basic/traits.rs:62:5 [INFO] [stdout] | [INFO] [stdout] 62 | pub content: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notify` [INFO] [stdout] --> src/basic/traits.rs:87:4 [INFO] [stdout] | [INFO] [stdout] 87 | fn notify(item: impl Summary) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_argument` [INFO] [stdout] --> src/basic/traits.rs:91:4 [INFO] [stdout] | [INFO] [stdout] 91 | fn demo_argument() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `show_summary_and_location` [INFO] [stdout] --> src/basic/traits.rs:111:4 [INFO] [stdout] | [INFO] [stdout] 111 | fn show_summary_and_location(item: impl Summary + Location) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_multiple_traits` [INFO] [stdout] --> src/basic/traits.rs:115:4 [INFO] [stdout] | [INFO] [stdout] 115 | fn demo_multiple_traits() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Screen` [INFO] [stdout] --> src/basic/traits.rs:125:12 [INFO] [stdout] | [INFO] [stdout] 125 | pub struct Screen { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `run` [INFO] [stdout] --> src/basic/traits.rs:130:12 [INFO] [stdout] | [INFO] [stdout] 130 | pub fn run(&self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_trait_object` [INFO] [stdout] --> src/basic/traits.rs:152:4 [INFO] [stdout] | [INFO] [stdout] 152 | fn demo_trait_object() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/pointers.rs:35:8 [INFO] [stdout] | [INFO] [stdout] 35 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_life_time` [INFO] [stdout] --> src/basic/pointers.rs:50:4 [INFO] [stdout] | [INFO] [stdout] 50 | fn demo_life_time() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `longest` [INFO] [stdout] --> src/basic/pointers.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_box_base` [INFO] [stdout] --> src/basic/pointers.rs:69:4 [INFO] [stdout] | [INFO] [stdout] 69 | fn demo_box_base() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/basic/pointers.rs:87:8 [INFO] [stdout] | [INFO] [stdout] 87 | fn new(x:T) -> MyBox { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_deref` [INFO] [stdout] --> src/basic/pointers.rs:102:4 [INFO] [stdout] | [INFO] [stdout] 102 | fn demo_deref() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `hello` [INFO] [stdout] --> src/basic/pointers.rs:109:4 [INFO] [stdout] | [INFO] [stdout] 109 | fn hello(word: &str) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_deref_coercion` [INFO] [stdout] --> src/basic/pointers.rs:113:4 [INFO] [stdout] | [INFO] [stdout] 113 | fn demo_deref_coercion() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_drop` [INFO] [stdout] --> src/basic/pointers.rs:127:4 [INFO] [stdout] | [INFO] [stdout] 127 | fn demo_drop() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `List` [INFO] [stdout] --> src/basic/pointers.rs:138:6 [INFO] [stdout] | [INFO] [stdout] 138 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_rc` [INFO] [stdout] --> src/basic/pointers.rs:143:4 [INFO] [stdout] | [INFO] [stdout] 143 | fn demo_rc() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/generics.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `A` [INFO] [stdout] --> src/basic/generics.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | struct A { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `item` [INFO] [stdout] --> src/basic/generics.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | fn item(&self) -> &SomeTypeName { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/basic/threads.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_join` [INFO] [stdout] --> src/basic/threads.rs:39:4 [INFO] [stdout] | [INFO] [stdout] 39 | fn demo_join() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_move_keyword` [INFO] [stdout] --> src/basic/threads.rs:55:4 [INFO] [stdout] | [INFO] [stdout] 55 | fn demo_move_keyword() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_channel` [INFO] [stdout] --> src/basic/threads.rs:71:4 [INFO] [stdout] | [INFO] [stdout] 71 | fn demo_channel() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_channel_multi_producer` [INFO] [stdout] --> src/basic/threads.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn demo_channel_multi_producer() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/collectors/vectors.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/collectors/vectors.rs:26:4 [INFO] [stdout] | [INFO] [stdout] 26 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_loop` [INFO] [stdout] --> src/collectors/vectors.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn demo_loop() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Int` [INFO] [stdout] --> src/collectors/vectors.rs:53:5 [INFO] [stdout] | [INFO] [stdout] 53 | Int(i32), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Cell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/collectors/vectors.rs:51:10 [INFO] [stdout] | [INFO] [stdout] 51 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Text` [INFO] [stdout] --> src/collectors/vectors.rs:54:5 [INFO] [stdout] | [INFO] [stdout] 54 | Text(String), [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Cell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/collectors/vectors.rs:51:10 [INFO] [stdout] | [INFO] [stdout] 51 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_mul_types` [INFO] [stdout] --> src/collectors/vectors.rs:57:4 [INFO] [stdout] | [INFO] [stdout] 57 | fn demo_mul_types() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/collectors/strings.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/collectors/strings.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_plus` [INFO] [stdout] --> src/collectors/strings.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn demo_plus() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_char` [INFO] [stdout] --> src/collectors/strings.rs:36:4 [INFO] [stdout] | [INFO] [stdout] 36 | fn demo_char() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/collectors/maps.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/collectors/maps.rs:21:4 [INFO] [stdout] | [INFO] [stdout] 21 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_loop` [INFO] [stdout] --> src/collectors/maps.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn demo_loop() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/collectors/linked_list.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `List` [INFO] [stdout] --> src/feature/cons_list.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/feature/cons_list.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | fn new() -> List { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `prepend` [INFO] [stdout] --> src/feature/cons_list.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | fn prepend(self, n:i32) -> List { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `stringify` [INFO] [stdout] --> src/feature/cons_list.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | fn stringify(&self) -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/feature/cons_list.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 32 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/basic/threads.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | j.join(); // join up thread to main thread, so make main thread to wait for the current thread resolve [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/basic/threads.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | handler.join(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 107 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.49s [INFO] running `Command { std: "docker" "inspect" "d859e1a6ce4496249f8a6959052997d8bb80a752d4f50e8bd0ebff1b9381e43f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d859e1a6ce4496249f8a6959052997d8bb80a752d4f50e8bd0ebff1b9381e43f", kill_on_drop: false }` [INFO] [stdout] d859e1a6ce4496249f8a6959052997d8bb80a752d4f50e8bd0ebff1b9381e43f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7ec55b3f627561416d67d5a824e889f8b9ad944a1190b55470f264fe46cc4d20 [INFO] running `Command { std: "docker" "start" "-a" "7ec55b3f627561416d67d5a824e889f8b9ad944a1190b55470f264fe46cc4d20", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling rust_hello_world v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/basic/pointers.rs:146:9 [INFO] [stdout] | [INFO] [stdout] 146 | 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)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/basic/pointers.rs:148:9 [INFO] [stdout] | [INFO] [stdout] 148 | 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: `j` [INFO] [stdout] --> src/basic/threads.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | for j in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_j` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/basic/threads.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | let mut v = vec![1, 2, 3]; [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: function is never used: `demo` [INFO] [stdout] --> src/module_example.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn demo () { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `CON` [INFO] [stdout] --> src/basic/variables.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | const CON: &str = "I am a const string."; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: static is never used: `STA` [INFO] [stdout] --> src/basic/variables.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | static STA: &str = "I am a static string."; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/variables.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | pub fn demo () { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/types.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_tuple` [INFO] [stdout] --> src/basic/types.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | fn demo_tuple() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_array` [INFO] [stdout] --> src/basic/types.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | fn demo_array() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/flow.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_if` [INFO] [stdout] --> src/basic/flow.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn demo_if() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_loop` [INFO] [stdout] --> src/basic/flow.rs:34:4 [INFO] [stdout] | [INFO] [stdout] 34 | fn demo_loop() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_while` [INFO] [stdout] --> src/basic/flow.rs:46:4 [INFO] [stdout] | [INFO] [stdout] 46 | fn demo_while() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_for` [INFO] [stdout] --> src/basic/flow.rs:54:4 [INFO] [stdout] | [INFO] [stdout] 54 | fn demo_for() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_match` [INFO] [stdout] --> src/basic/flow.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn demo_match (some_u8_value:u8) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/ownership.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `takes_ownership` [INFO] [stdout] --> src/basic/ownership.rs:34:4 [INFO] [stdout] | [INFO] [stdout] 34 | fn takes_ownership(some_string: String) -> String { // some_string comes into scope [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `borrow_mut_ownership` [INFO] [stdout] --> src/basic/ownership.rs:39:4 [INFO] [stdout] | [INFO] [stdout] 39 | fn borrow_mut_ownership(some_string: &mut String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_scope` [INFO] [stdout] --> src/basic/ownership.rs:43:4 [INFO] [stdout] | [INFO] [stdout] 43 | fn demo_scope() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_move` [INFO] [stdout] --> src/basic/ownership.rs:51:4 [INFO] [stdout] | [INFO] [stdout] 51 | fn demo_move() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_clone` [INFO] [stdout] --> src/basic/ownership.rs:58:4 [INFO] [stdout] | [INFO] [stdout] 58 | fn demo_clone() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_copy` [INFO] [stdout] --> src/basic/ownership.rs:64:4 [INFO] [stdout] | [INFO] [stdout] 64 | fn demo_copy() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/strings.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/structs.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `name` [INFO] [stdout] --> src/basic/structs.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | name: String, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/structs.rs:28:10 [INFO] [stdout] | [INFO] [stdout] 28 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `age` [INFO] [stdout] --> src/basic/structs.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | age: u8, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/structs.rs:28:10 [INFO] [stdout] | [INFO] [stdout] 28 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/basic/structs.rs:38:4 [INFO] [stdout] | [INFO] [stdout] 38 | fn demo_create() -> User { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `age_plus` [INFO] [stdout] --> src/basic/structs.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | fn age_plus(&mut self) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `build` [INFO] [stdout] --> src/basic/structs.rs:49:8 [INFO] [stdout] | [INFO] [stdout] 49 | fn build(name:String, age:u8) -> User{ [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `x` [INFO] [stdout] --> src/basic/structs.rs:57:5 [INFO] [stdout] | [INFO] [stdout] 57 | x: T, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: `GenPoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/structs.rs:55:10 [INFO] [stdout] | [INFO] [stdout] 55 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> src/basic/structs.rs:58:5 [INFO] [stdout] | [INFO] [stdout] 58 | y: T, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: `GenPoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/structs.rs:55:10 [INFO] [stdout] | [INFO] [stdout] 55 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `x` [INFO] [stdout] --> src/basic/structs.rs:62:8 [INFO] [stdout] | [INFO] [stdout] 62 | fn x(&self) -> &T { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_generic` [INFO] [stdout] --> src/basic/structs.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn demo_generic() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/enums.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/basic/enums.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | V4(String), [INFO] [stdout] | ^^^^^^^^^^ [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] --> src/basic/enums.rs:26:10 [INFO] [stdout] | [INFO] [stdout] 26 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/basic/enums.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | V6(String), [INFO] [stdout] | ^^^^^^^^^^ [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] --> src/basic/enums.rs:26:10 [INFO] [stdout] | [INFO] [stdout] 26 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/basic/enums.rs:32:4 [INFO] [stdout] | [INFO] [stdout] 32 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `MALE` [INFO] [stdout] --> src/basic/enums.rs:43:5 [INFO] [stdout] | [INFO] [stdout] 43 | MALE, FEMALE [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Gender` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/enums.rs:41:10 [INFO] [stdout] | [INFO] [stdout] 41 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `FEMALE` [INFO] [stdout] --> src/basic/enums.rs:43:11 [INFO] [stdout] | [INFO] [stdout] 43 | MALE, FEMALE [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Gender` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/basic/enums.rs:41:10 [INFO] [stdout] | [INFO] [stdout] 41 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `prt` [INFO] [stdout] --> src/basic/enums.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | fn prt(&self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_fun` [INFO] [stdout] --> src/basic/enums.rs:52:4 [INFO] [stdout] | [INFO] [stdout] 52 | fn demo_fun() { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Person` [INFO] [stdout] --> src/basic/enums.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | struct Person { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_option` [INFO] [stdout] --> src/basic/enums.rs:66:4 [INFO] [stdout] | [INFO] [stdout] 66 | fn demo_option() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Coin` [INFO] [stdout] --> src/basic/enums.rs:87:6 [INFO] [stdout] | [INFO] [stdout] 87 | enum Coin { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `value_in_cents` [INFO] [stdout] --> src/basic/enums.rs:94:4 [INFO] [stdout] | [INFO] [stdout] 94 | fn value_in_cents(coin: Coin) -> u32 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_match` [INFO] [stdout] --> src/basic/enums.rs:103:4 [INFO] [stdout] | [INFO] [stdout] 103 | fn demo_match() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_if_let` [INFO] [stdout] --> src/basic/enums.rs:110:4 [INFO] [stdout] | [INFO] [stdout] 110 | fn demo_if_let(num:Option) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/functions.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn demo () { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_closure` [INFO] [stdout] --> src/basic/functions.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn demo_closure() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Cacher` [INFO] [stdout] --> src/basic/functions.rs:52:8 [INFO] [stdout] | [INFO] [stdout] 52 | struct Cacher [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/basic/functions.rs:62:8 [INFO] [stdout] | [INFO] [stdout] 62 | fn value(&mut self, arg: u32) -> u32 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_closure_as_param` [INFO] [stdout] --> src/basic/functions.rs:74:4 [INFO] [stdout] | [INFO] [stdout] 74 | fn demo_closure_as_param() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_capture_env` [INFO] [stdout] --> src/basic/functions.rs:84:4 [INFO] [stdout] | [INFO] [stdout] 84 | fn demo_capture_env() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/traits.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `create_art` [INFO] [stdout] --> src/basic/traits.rs:21:4 [INFO] [stdout] | [INFO] [stdout] 21 | fn create_art() -> NewsArticle { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `create_tw` [INFO] [stdout] --> src/basic/traits.rs:30:4 [INFO] [stdout] | [INFO] [stdout] 30 | fn create_tw() -> Tweet { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/basic/traits.rs:38:4 [INFO] [stdout] | [INFO] [stdout] 38 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `content` [INFO] [stdout] --> src/basic/traits.rs:62:5 [INFO] [stdout] | [INFO] [stdout] 62 | pub content: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `notify` [INFO] [stdout] --> src/basic/traits.rs:87:4 [INFO] [stdout] | [INFO] [stdout] 87 | fn notify(item: impl Summary) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_argument` [INFO] [stdout] --> src/basic/traits.rs:91:4 [INFO] [stdout] | [INFO] [stdout] 91 | fn demo_argument() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `show_summary_and_location` [INFO] [stdout] --> src/basic/traits.rs:111:4 [INFO] [stdout] | [INFO] [stdout] 111 | fn show_summary_and_location(item: impl Summary + Location) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_multiple_traits` [INFO] [stdout] --> src/basic/traits.rs:115:4 [INFO] [stdout] | [INFO] [stdout] 115 | fn demo_multiple_traits() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Screen` [INFO] [stdout] --> src/basic/traits.rs:125:12 [INFO] [stdout] | [INFO] [stdout] 125 | pub struct Screen { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `run` [INFO] [stdout] --> src/basic/traits.rs:130:12 [INFO] [stdout] | [INFO] [stdout] 130 | pub fn run(&self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_trait_object` [INFO] [stdout] --> src/basic/traits.rs:152:4 [INFO] [stdout] | [INFO] [stdout] 152 | fn demo_trait_object() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/pointers.rs:35:8 [INFO] [stdout] | [INFO] [stdout] 35 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_life_time` [INFO] [stdout] --> src/basic/pointers.rs:50:4 [INFO] [stdout] | [INFO] [stdout] 50 | fn demo_life_time() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `longest` [INFO] [stdout] --> src/basic/pointers.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_box_base` [INFO] [stdout] --> src/basic/pointers.rs:69:4 [INFO] [stdout] | [INFO] [stdout] 69 | fn demo_box_base() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/basic/pointers.rs:87:8 [INFO] [stdout] | [INFO] [stdout] 87 | fn new(x:T) -> MyBox { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_deref` [INFO] [stdout] --> src/basic/pointers.rs:102:4 [INFO] [stdout] | [INFO] [stdout] 102 | fn demo_deref() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `hello` [INFO] [stdout] --> src/basic/pointers.rs:109:4 [INFO] [stdout] | [INFO] [stdout] 109 | fn hello(word: &str) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_deref_coercion` [INFO] [stdout] --> src/basic/pointers.rs:113:4 [INFO] [stdout] | [INFO] [stdout] 113 | fn demo_deref_coercion() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_drop` [INFO] [stdout] --> src/basic/pointers.rs:127:4 [INFO] [stdout] | [INFO] [stdout] 127 | fn demo_drop() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `List` [INFO] [stdout] --> src/basic/pointers.rs:138:6 [INFO] [stdout] | [INFO] [stdout] 138 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_rc` [INFO] [stdout] --> src/basic/pointers.rs:143:4 [INFO] [stdout] | [INFO] [stdout] 143 | fn demo_rc() { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/basic/generics.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `A` [INFO] [stdout] --> src/basic/generics.rs:11:8 [INFO] [stdout] | [INFO] [stdout] 11 | struct A { [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `item` [INFO] [stdout] --> src/basic/generics.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | fn item(&self) -> &SomeTypeName { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/basic/threads.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_join` [INFO] [stdout] --> src/basic/threads.rs:39:4 [INFO] [stdout] | [INFO] [stdout] 39 | fn demo_join() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_move_keyword` [INFO] [stdout] --> src/basic/threads.rs:55:4 [INFO] [stdout] | [INFO] [stdout] 55 | fn demo_move_keyword() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_channel` [INFO] [stdout] --> src/basic/threads.rs:71:4 [INFO] [stdout] | [INFO] [stdout] 71 | fn demo_channel() { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_channel_multi_producer` [INFO] [stdout] --> src/basic/threads.rs:85:4 [INFO] [stdout] | [INFO] [stdout] 85 | fn demo_channel_multi_producer() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/collectors/vectors.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/collectors/vectors.rs:26:4 [INFO] [stdout] | [INFO] [stdout] 26 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_loop` [INFO] [stdout] --> src/collectors/vectors.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn demo_loop() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Int` [INFO] [stdout] --> src/collectors/vectors.rs:53:5 [INFO] [stdout] | [INFO] [stdout] 53 | Int(i32), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Cell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/collectors/vectors.rs:51:10 [INFO] [stdout] | [INFO] [stdout] 51 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Text` [INFO] [stdout] --> src/collectors/vectors.rs:54:5 [INFO] [stdout] | [INFO] [stdout] 54 | Text(String), [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Cell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/collectors/vectors.rs:51:10 [INFO] [stdout] | [INFO] [stdout] 51 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_mul_types` [INFO] [stdout] --> src/collectors/vectors.rs:57:4 [INFO] [stdout] | [INFO] [stdout] 57 | fn demo_mul_types() { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/collectors/strings.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/collectors/strings.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_plus` [INFO] [stdout] --> src/collectors/strings.rs:23:4 [INFO] [stdout] | [INFO] [stdout] 23 | fn demo_plus() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_char` [INFO] [stdout] --> src/collectors/strings.rs:36:4 [INFO] [stdout] | [INFO] [stdout] 36 | fn demo_char() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/collectors/maps.rs:13:8 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_create` [INFO] [stdout] --> src/collectors/maps.rs:21:4 [INFO] [stdout] | [INFO] [stdout] 21 | fn demo_create() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo_loop` [INFO] [stdout] --> src/collectors/maps.rs:31:4 [INFO] [stdout] | [INFO] [stdout] 31 | fn demo_loop() { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/collectors/linked_list.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `List` [INFO] [stdout] --> src/feature/cons_list.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/feature/cons_list.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 10 | fn new() -> List { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `prepend` [INFO] [stdout] --> src/feature/cons_list.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 14 | fn prepend(self, n:i32) -> List { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `stringify` [INFO] [stdout] --> src/feature/cons_list.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | fn stringify(&self) -> String { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `demo` [INFO] [stdout] --> src/feature/cons_list.rs:32:8 [INFO] [stdout] | [INFO] [stdout] 32 | pub fn demo() { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/basic/threads.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | j.join(); // join up thread to main thread, so make main thread to wait for the current thread resolve [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/basic/threads.rs:67:5 [INFO] [stdout] | [INFO] [stdout] 67 | handler.join(); [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 107 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.20s [INFO] running `Command { std: "docker" "inspect" "7ec55b3f627561416d67d5a824e889f8b9ad944a1190b55470f264fe46cc4d20", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7ec55b3f627561416d67d5a824e889f8b9ad944a1190b55470f264fe46cc4d20", kill_on_drop: false }` [INFO] [stdout] 7ec55b3f627561416d67d5a824e889f8b9ad944a1190b55470f264fe46cc4d20 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 88d13e68ac35df6d364c32df21cd1883e65d406fd2497b72983633e22aa73f99 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "88d13e68ac35df6d364c32df21cd1883e65d406fd2497b72983633e22aa73f99", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/basic/pointers.rs:146:9 [INFO] [stderr] | [INFO] [stderr] 146 | let b = Cons(3, Rc::clone(&a)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/basic/pointers.rs:148:9 [INFO] [stderr] | [INFO] [stderr] 148 | let c = Cons(4, Rc::clone(&a)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_c` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `j` [INFO] [stderr] --> src/basic/threads.rs:33:9 [INFO] [stderr] | [INFO] [stderr] 33 | for j in 0..10 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_j` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/basic/threads.rs:57:9 [INFO] [stderr] | [INFO] [stderr] 57 | let mut v = vec![1, 2, 3]; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/module_example.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn demo () { [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: constant is never used: `CON` [INFO] [stderr] --> src/basic/variables.rs:7:1 [INFO] [stderr] | [INFO] [stderr] 7 | const CON: &str = "I am a const string."; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: static is never used: `STA` [INFO] [stderr] --> src/basic/variables.rs:8:1 [INFO] [stderr] | [INFO] [stderr] 8 | static STA: &str = "I am a static string."; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/variables.rs:10:8 [INFO] [stderr] | [INFO] [stderr] 10 | pub fn demo () { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/types.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_tuple` [INFO] [stderr] --> src/basic/types.rs:24:5 [INFO] [stderr] | [INFO] [stderr] 24 | fn demo_tuple() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_array` [INFO] [stderr] --> src/basic/types.rs:31:5 [INFO] [stderr] | [INFO] [stderr] 31 | fn demo_array() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/flow.rs:6:8 [INFO] [stderr] | [INFO] [stderr] 6 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_if` [INFO] [stderr] --> src/basic/flow.rs:18:4 [INFO] [stderr] | [INFO] [stderr] 18 | fn demo_if() { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_loop` [INFO] [stderr] --> src/basic/flow.rs:34:4 [INFO] [stderr] | [INFO] [stderr] 34 | fn demo_loop() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_while` [INFO] [stderr] --> src/basic/flow.rs:46:4 [INFO] [stderr] | [INFO] [stderr] 46 | fn demo_while() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_for` [INFO] [stderr] --> src/basic/flow.rs:54:4 [INFO] [stderr] | [INFO] [stderr] 54 | fn demo_for() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_match` [INFO] [stderr] --> src/basic/flow.rs:60:4 [INFO] [stderr] | [INFO] [stderr] 60 | fn demo_match (some_u8_value:u8) { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/ownership.rs:14:8 [INFO] [stderr] | [INFO] [stderr] 14 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `takes_ownership` [INFO] [stderr] --> src/basic/ownership.rs:34:4 [INFO] [stderr] | [INFO] [stderr] 34 | fn takes_ownership(some_string: String) -> String { // some_string comes into scope [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `borrow_mut_ownership` [INFO] [stderr] --> src/basic/ownership.rs:39:4 [INFO] [stderr] | [INFO] [stderr] 39 | fn borrow_mut_ownership(some_string: &mut String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_scope` [INFO] [stderr] --> src/basic/ownership.rs:43:4 [INFO] [stderr] | [INFO] [stderr] 43 | fn demo_scope() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_move` [INFO] [stderr] --> src/basic/ownership.rs:51:4 [INFO] [stderr] | [INFO] [stderr] 51 | fn demo_move() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_clone` [INFO] [stderr] --> src/basic/ownership.rs:58:4 [INFO] [stderr] | [INFO] [stderr] 58 | fn demo_clone() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_copy` [INFO] [stderr] --> src/basic/ownership.rs:64:4 [INFO] [stderr] | [INFO] [stderr] 64 | fn demo_copy() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/strings.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/structs.rs:11:8 [INFO] [stderr] | [INFO] [stderr] 11 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `name` [INFO] [stderr] --> src/basic/structs.rs:30:5 [INFO] [stderr] | [INFO] [stderr] 30 | name: String, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/basic/structs.rs:28:10 [INFO] [stderr] | [INFO] [stderr] 28 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `age` [INFO] [stderr] --> src/basic/structs.rs:31:5 [INFO] [stderr] | [INFO] [stderr] 31 | age: u8, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/basic/structs.rs:28:10 [INFO] [stderr] | [INFO] [stderr] 28 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_create` [INFO] [stderr] --> src/basic/structs.rs:38:4 [INFO] [stderr] | [INFO] [stderr] 38 | fn demo_create() -> User { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `age_plus` [INFO] [stderr] --> src/basic/structs.rs:45:8 [INFO] [stderr] | [INFO] [stderr] 45 | fn age_plus(&mut self) { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `build` [INFO] [stderr] --> src/basic/structs.rs:49:8 [INFO] [stderr] | [INFO] [stderr] 49 | fn build(name:String, age:u8) -> User{ [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `x` [INFO] [stderr] --> src/basic/structs.rs:57:5 [INFO] [stderr] | [INFO] [stderr] 57 | x: T, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] note: `GenPoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/basic/structs.rs:55:10 [INFO] [stderr] | [INFO] [stderr] 55 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `y` [INFO] [stderr] --> src/basic/structs.rs:58:5 [INFO] [stderr] | [INFO] [stderr] 58 | y: T, [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] note: `GenPoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/basic/structs.rs:55:10 [INFO] [stderr] | [INFO] [stderr] 55 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `x` [INFO] [stderr] --> src/basic/structs.rs:62:8 [INFO] [stderr] | [INFO] [stderr] 62 | fn x(&self) -> &T { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_generic` [INFO] [stderr] --> src/basic/structs.rs:67:4 [INFO] [stderr] | [INFO] [stderr] 67 | fn demo_generic() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/enums.rs:14:8 [INFO] [stderr] | [INFO] [stderr] 14 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `V4` [INFO] [stderr] --> src/basic/enums.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | V4(String), [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/basic/enums.rs:26:10 [INFO] [stderr] | [INFO] [stderr] 26 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `V6` [INFO] [stderr] --> src/basic/enums.rs:29:5 [INFO] [stderr] | [INFO] [stderr] 29 | V6(String), [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `IpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/basic/enums.rs:26:10 [INFO] [stderr] | [INFO] [stderr] 26 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_create` [INFO] [stderr] --> src/basic/enums.rs:32:4 [INFO] [stderr] | [INFO] [stderr] 32 | fn demo_create() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `MALE` [INFO] [stderr] --> src/basic/enums.rs:43:5 [INFO] [stderr] | [INFO] [stderr] 43 | MALE, FEMALE [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Gender` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/basic/enums.rs:41:10 [INFO] [stderr] | [INFO] [stderr] 41 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `FEMALE` [INFO] [stderr] --> src/basic/enums.rs:43:11 [INFO] [stderr] | [INFO] [stderr] 43 | MALE, FEMALE [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Gender` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/basic/enums.rs:41:10 [INFO] [stderr] | [INFO] [stderr] 41 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `prt` [INFO] [stderr] --> src/basic/enums.rs:47:8 [INFO] [stderr] | [INFO] [stderr] 47 | fn prt(&self) { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_fun` [INFO] [stderr] --> src/basic/enums.rs:52:4 [INFO] [stderr] | [INFO] [stderr] 52 | fn demo_fun() { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Person` [INFO] [stderr] --> src/basic/enums.rs:61:8 [INFO] [stderr] | [INFO] [stderr] 61 | struct Person { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_option` [INFO] [stderr] --> src/basic/enums.rs:66:4 [INFO] [stderr] | [INFO] [stderr] 66 | fn demo_option() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `Coin` [INFO] [stderr] --> src/basic/enums.rs:87:6 [INFO] [stderr] | [INFO] [stderr] 87 | enum Coin { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `value_in_cents` [INFO] [stderr] --> src/basic/enums.rs:94:4 [INFO] [stderr] | [INFO] [stderr] 94 | fn value_in_cents(coin: Coin) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_match` [INFO] [stderr] --> src/basic/enums.rs:103:4 [INFO] [stderr] | [INFO] [stderr] 103 | fn demo_match() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_if_let` [INFO] [stderr] --> src/basic/enums.rs:110:4 [INFO] [stderr] | [INFO] [stderr] 110 | fn demo_if_let(num:Option) { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/functions.rs:16:8 [INFO] [stderr] | [INFO] [stderr] 16 | pub fn demo () { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_closure` [INFO] [stderr] --> src/basic/functions.rs:40:4 [INFO] [stderr] | [INFO] [stderr] 40 | fn demo_closure() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Cacher` [INFO] [stderr] --> src/basic/functions.rs:52:8 [INFO] [stderr] | [INFO] [stderr] 52 | struct Cacher [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `value` [INFO] [stderr] --> src/basic/functions.rs:62:8 [INFO] [stderr] | [INFO] [stderr] 62 | fn value(&mut self, arg: u32) -> u32 { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_closure_as_param` [INFO] [stderr] --> src/basic/functions.rs:74:4 [INFO] [stderr] | [INFO] [stderr] 74 | fn demo_closure_as_param() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_capture_env` [INFO] [stderr] --> src/basic/functions.rs:84:4 [INFO] [stderr] | [INFO] [stderr] 84 | fn demo_capture_env() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/traits.rs:11:8 [INFO] [stderr] | [INFO] [stderr] 11 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `create_art` [INFO] [stderr] --> src/basic/traits.rs:21:4 [INFO] [stderr] | [INFO] [stderr] 21 | fn create_art() -> NewsArticle { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `create_tw` [INFO] [stderr] --> src/basic/traits.rs:30:4 [INFO] [stderr] | [INFO] [stderr] 30 | fn create_tw() -> Tweet { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_create` [INFO] [stderr] --> src/basic/traits.rs:38:4 [INFO] [stderr] | [INFO] [stderr] 38 | fn demo_create() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `content` [INFO] [stderr] --> src/basic/traits.rs:62:5 [INFO] [stderr] | [INFO] [stderr] 62 | pub content: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `notify` [INFO] [stderr] --> src/basic/traits.rs:87:4 [INFO] [stderr] | [INFO] [stderr] 87 | fn notify(item: impl Summary) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_argument` [INFO] [stderr] --> src/basic/traits.rs:91:4 [INFO] [stderr] | [INFO] [stderr] 91 | fn demo_argument() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `show_summary_and_location` [INFO] [stderr] --> src/basic/traits.rs:111:4 [INFO] [stderr] | [INFO] [stderr] 111 | fn show_summary_and_location(item: impl Summary + Location) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_multiple_traits` [INFO] [stderr] --> src/basic/traits.rs:115:4 [INFO] [stderr] | [INFO] [stderr] 115 | fn demo_multiple_traits() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Screen` [INFO] [stderr] --> src/basic/traits.rs:125:12 [INFO] [stderr] | [INFO] [stderr] 125 | pub struct Screen { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `run` [INFO] [stderr] --> src/basic/traits.rs:130:12 [INFO] [stderr] | [INFO] [stderr] 130 | pub fn run(&self) { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_trait_object` [INFO] [stderr] --> src/basic/traits.rs:152:4 [INFO] [stderr] | [INFO] [stderr] 152 | fn demo_trait_object() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/pointers.rs:35:8 [INFO] [stderr] | [INFO] [stderr] 35 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_life_time` [INFO] [stderr] --> src/basic/pointers.rs:50:4 [INFO] [stderr] | [INFO] [stderr] 50 | fn demo_life_time() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `longest` [INFO] [stderr] --> src/basic/pointers.rs:60:4 [INFO] [stderr] | [INFO] [stderr] 60 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_box_base` [INFO] [stderr] --> src/basic/pointers.rs:69:4 [INFO] [stderr] | [INFO] [stderr] 69 | fn demo_box_base() { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/basic/pointers.rs:87:8 [INFO] [stderr] | [INFO] [stderr] 87 | fn new(x:T) -> MyBox { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_deref` [INFO] [stderr] --> src/basic/pointers.rs:102:4 [INFO] [stderr] | [INFO] [stderr] 102 | fn demo_deref() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `hello` [INFO] [stderr] --> src/basic/pointers.rs:109:4 [INFO] [stderr] | [INFO] [stderr] 109 | fn hello(word: &str) { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_deref_coercion` [INFO] [stderr] --> src/basic/pointers.rs:113:4 [INFO] [stderr] | [INFO] [stderr] 113 | fn demo_deref_coercion() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_drop` [INFO] [stderr] --> src/basic/pointers.rs:127:4 [INFO] [stderr] | [INFO] [stderr] 127 | fn demo_drop() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `List` [INFO] [stderr] --> src/basic/pointers.rs:138:6 [INFO] [stderr] | [INFO] [stderr] 138 | enum List { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_rc` [INFO] [stderr] --> src/basic/pointers.rs:143:4 [INFO] [stderr] | [INFO] [stderr] 143 | fn demo_rc() { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/basic/generics.rs:1:8 [INFO] [stderr] | [INFO] [stderr] 1 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `A` [INFO] [stderr] --> src/basic/generics.rs:11:8 [INFO] [stderr] | [INFO] [stderr] 11 | struct A { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `item` [INFO] [stderr] --> src/basic/generics.rs:16:8 [INFO] [stderr] | [INFO] [stderr] 16 | fn item(&self) -> &SomeTypeName { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_create` [INFO] [stderr] --> src/basic/threads.rs:24:4 [INFO] [stderr] | [INFO] [stderr] 24 | fn demo_create() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_join` [INFO] [stderr] --> src/basic/threads.rs:39:4 [INFO] [stderr] | [INFO] [stderr] 39 | fn demo_join() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_move_keyword` [INFO] [stderr] --> src/basic/threads.rs:55:4 [INFO] [stderr] | [INFO] [stderr] 55 | fn demo_move_keyword() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_channel` [INFO] [stderr] --> src/basic/threads.rs:71:4 [INFO] [stderr] | [INFO] [stderr] 71 | fn demo_channel() { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_channel_multi_producer` [INFO] [stderr] --> src/basic/threads.rs:85:4 [INFO] [stderr] | [INFO] [stderr] 85 | fn demo_channel_multi_producer() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/collectors/vectors.rs:16:8 [INFO] [stderr] | [INFO] [stderr] 16 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_create` [INFO] [stderr] --> src/collectors/vectors.rs:26:4 [INFO] [stderr] | [INFO] [stderr] 26 | fn demo_create() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_loop` [INFO] [stderr] --> src/collectors/vectors.rs:41:4 [INFO] [stderr] | [INFO] [stderr] 41 | fn demo_loop() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Int` [INFO] [stderr] --> src/collectors/vectors.rs:53:5 [INFO] [stderr] | [INFO] [stderr] 53 | Int(i32), [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Cell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/collectors/vectors.rs:51:10 [INFO] [stderr] | [INFO] [stderr] 51 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Text` [INFO] [stderr] --> src/collectors/vectors.rs:54:5 [INFO] [stderr] | [INFO] [stderr] 54 | Text(String), [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Cell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/collectors/vectors.rs:51:10 [INFO] [stderr] | [INFO] [stderr] 51 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_mul_types` [INFO] [stderr] --> src/collectors/vectors.rs:57:4 [INFO] [stderr] | [INFO] [stderr] 57 | fn demo_mul_types() { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/collectors/strings.rs:8:8 [INFO] [stderr] | [INFO] [stderr] 8 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_create` [INFO] [stderr] --> src/collectors/strings.rs:17:4 [INFO] [stderr] | [INFO] [stderr] 17 | fn demo_create() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_plus` [INFO] [stderr] --> src/collectors/strings.rs:23:4 [INFO] [stderr] | [INFO] [stderr] 23 | fn demo_plus() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_char` [INFO] [stderr] --> src/collectors/strings.rs:36:4 [INFO] [stderr] | [INFO] [stderr] 36 | fn demo_char() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/collectors/maps.rs:13:8 [INFO] [stderr] | [INFO] [stderr] 13 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_create` [INFO] [stderr] --> src/collectors/maps.rs:21:4 [INFO] [stderr] | [INFO] [stderr] 21 | fn demo_create() { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo_loop` [INFO] [stderr] --> src/collectors/maps.rs:31:4 [INFO] [stderr] | [INFO] [stderr] 31 | fn demo_loop() { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/collectors/linked_list.rs:4:8 [INFO] [stderr] | [INFO] [stderr] 4 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `List` [INFO] [stderr] --> src/feature/cons_list.rs:4:6 [INFO] [stderr] | [INFO] [stderr] 4 | enum List { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/feature/cons_list.rs:10:8 [INFO] [stderr] | [INFO] [stderr] 10 | fn new() -> List { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `prepend` [INFO] [stderr] --> src/feature/cons_list.rs:14:8 [INFO] [stderr] | [INFO] [stderr] 14 | fn prepend(self, n:i32) -> List { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `stringify` [INFO] [stderr] --> src/feature/cons_list.rs:18:8 [INFO] [stderr] | [INFO] [stderr] 18 | fn stringify(&self) -> String { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `demo` [INFO] [stderr] --> src/feature/cons_list.rs:32:8 [INFO] [stderr] | [INFO] [stderr] 32 | pub fn demo() { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/basic/threads.rs:49:9 [INFO] [stderr] | [INFO] [stderr] 49 | j.join(); // join up thread to main thread, so make main thread to wait for the current thread resolve [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/basic/threads.rs:67:5 [INFO] [stderr] | [INFO] [stderr] 67 | handler.join(); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: `rust_hello_world` (bin "rust_hello_world" test) generated 107 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_hello_world-0f41f9c28467271e) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "88d13e68ac35df6d364c32df21cd1883e65d406fd2497b72983633e22aa73f99", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "88d13e68ac35df6d364c32df21cd1883e65d406fd2497b72983633e22aa73f99", kill_on_drop: false }` [INFO] [stdout] 88d13e68ac35df6d364c32df21cd1883e65d406fd2497b72983633e22aa73f99