[INFO] cloning repository https://github.com/blinkingso/rust_samples [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blinkingso/rust_samples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblinkingso%2Frust_samples", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblinkingso%2Frust_samples'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1eacfbf5f3a61a15ab6e587a1a65a094020396d3 [INFO] checking blinkingso/rust_samples against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblinkingso%2Frust_samples" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/blinkingso/rust_samples on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/blinkingso/rust_samples [INFO] finished tweaking git repo https://github.com/blinkingso/rust_samples [INFO] tweaked toml for git repo https://github.com/blinkingso/rust_samples written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/blinkingso/rust_samples already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 356ec3d8ddb8c39835de4e0b0967f460f67299194c1e114b074dd9f0086f8bc2 [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" "356ec3d8ddb8c39835de4e0b0967f460f67299194c1e114b074dd9f0086f8bc2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "356ec3d8ddb8c39835de4e0b0967f460f67299194c1e114b074dd9f0086f8bc2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "356ec3d8ddb8c39835de4e0b0967f460f67299194c1e114b074dd9f0086f8bc2", kill_on_drop: false }` [INFO] [stdout] 356ec3d8ddb8c39835de4e0b0967f460f67299194c1e114b074dd9f0086f8bc2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8e3d4d05d62938b50f90b125b2e0a1c2798a688d815e9162ef6abb53501638b5 [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" "8e3d4d05d62938b50f90b125b2e0a1c2798a688d815e9162ef6abb53501638b5", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.108 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling xml-rs v0.8.4 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Compiling proc-macro2 v1.0.32 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling khronos_api v3.1.0 [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling pkg-config v0.3.22 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Compiling syn v1.0.81 [INFO] [stderr] Checking smallvec v1.7.0 [INFO] [stderr] Checking piston-float v1.0.1 [INFO] [stderr] Checking ttf-parser v0.6.2 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking once_cell v1.8.0 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Checking scoped-tls v1.0.0 [INFO] 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[INFO] [stderr] Checking wayland-egl v0.28.6 [INFO] [stderr] Checking image v0.23.14 [INFO] [stderr] Checking gfx_device_gl v0.16.2 [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Compiling structopt-derive v0.4.18 [INFO] [stderr] Checking structopt v0.3.25 [INFO] [stderr] Checking piston-gfx_texture v0.41.0 [INFO] [stderr] Checking piston2d-gfx_graphics v0.73.0 [INFO] [stderr] Checking smithay-client-toolkit v0.12.3 [INFO] [stderr] Checking winit v0.24.0 [INFO] [stderr] Checking pistoncore-input v1.0.1 [INFO] [stderr] Checking glutin v0.26.0 [INFO] [stderr] Checking pistoncore-window v0.47.1 [INFO] [stderr] Checking pistoncore-event_loop v0.53.1 [INFO] [stderr] Checking pistoncore-glutin_window v0.69.0 [INFO] [stderr] Checking piston v0.53.1 [INFO] [stderr] Checking piston_window v0.120.0 [INFO] [stderr] Checking rust_lang v0.1.0 (/opt/rustwide/workdir/rust_lang) [INFO] [stdout] warning: unused import: `std::any::Any` [INFO] [stdout] --> rust_lang/examples/arrays.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::any::Any; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::front_of_house::hosting` [INFO] [stdout] --> rust_lang/examples/modules_exa.rs:19:16 [INFO] [stdout] | [INFO] [stdout] 19 | pub(crate) use crate::front_of_house::hosting; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: glob import doesn't reexport anything because no candidate is public enough [INFO] [stdout] --> rust_lang/examples/modules_exa.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | pub use crate::front_of_house::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0601]: `main` function not found in crate `ch_04` [INFO] [stdout] --> rust_lang/examples/ch_04.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | / //! Lifetimes, ownership and borrowing; [INFO] [stdout] 2 | | [INFO] [stdout] 3 | | #[derive(Debug)] [INFO] [stdout] 4 | | enum StatusMessage { [INFO] [stdout] ... | [INFO] [stdout] 136 | | } [INFO] [stdout] 137 | | } [INFO] [stdout] | |_^ consider adding a `main` function to `rust_lang/examples/ch_04.rs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `add_to_wait_list` [INFO] [stdout] --> rust_lang/examples/modules_exa.rs:6:23 [INFO] [stdout] | [INFO] [stdout] 6 | pub(crate) fn add_to_wait_list() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `seat_at_table` [INFO] [stdout] --> rust_lang/examples/modules_exa.rs:9:12 [INFO] [stdout] | [INFO] [stdout] 9 | fn seat_at_table() {} [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `take_order` [INFO] [stdout] --> rust_lang/examples/modules_exa.rs:13:12 [INFO] [stdout] | [INFO] [stdout] 13 | fn take_order() {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `serve_order` [INFO] [stdout] --> rust_lang/examples/modules_exa.rs:14:12 [INFO] [stdout] | [INFO] [stdout] 14 | fn serve_order() {} [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `take_payment` [INFO] [stdout] --> rust_lang/examples/modules_exa.rs:15:12 [INFO] [stdout] | [INFO] [stdout] 15 | fn take_payment() {} [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rust_lang/examples/pipes.rs:7:9 [INFO] [stdout] | [INFO] [stdout] 7 | let mut process = match Command::new("minigrep") [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> rust_lang/examples/ref_borrowing.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let r1 = &mut s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> rust_lang/examples/ref_borrowing.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let r1 = &s; // no problem [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r2` [INFO] [stdout] --> rust_lang/examples/ref_borrowing.rs:34:9 [INFO] [stdout] | [INFO] [stdout] 34 | let r2 = &s; // no problem [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `CPU` [INFO] [stdout] --> rust_lang/examples/ch_05.rs:190:8 [INFO] [stdout] | [INFO] [stdout] 190 | struct CPU { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `read_opcode` [INFO] [stdout] --> rust_lang/examples/ch_05.rs:204:8 [INFO] [stdout] | [INFO] [stdout] 204 | fn read_opcode(&self) -> u16 { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_xy` [INFO] [stdout] --> rust_lang/examples/ch_05.rs:215:8 [INFO] [stdout] | [INFO] [stdout] 215 | fn add_xy(&mut self, x: u8, y: u8) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `call` [INFO] [stdout] --> rust_lang/examples/ch_05.rs:230:8 [INFO] [stdout] | [INFO] [stdout] 230 | fn call(&mut self, addr: u16) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `ret` [INFO] [stdout] --> rust_lang/examples/ch_05.rs:245:8 [INFO] [stdout] | [INFO] [stdout] 245 | fn ret(&mut self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `run` [INFO] [stdout] --> rust_lang/examples/ch_05.rs:256:8 [INFO] [stdout] | [INFO] [stdout] 256 | fn run(&mut self) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `mutable_ref` [INFO] [stdout] --> rust_lang/examples/ref_borrowing.rs:16:4 [INFO] [stdout] | [INFO] [stdout] 16 | fn mutable_ref() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process::Output` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::process::Output; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `hash::Hash` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:4:45 [INFO] [stdout] | [INFO] [stdout] 4 | use std::{collections::HashMap, fmt::Debug, hash::Hash, io::Write, iter::Cycle}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::boxed::Box` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | use std::boxed::Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `graphics::Viewport` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:68:5 [INFO] [stdout] | [INFO] [stdout] 68 | use graphics::Viewport; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0601`. [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::time::Duration` [INFO] [stdout] --> rust_lang/examples/ch_08.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `io::Write`, `net::TcpStream` [INFO] [stdout] --> rust_lang/examples/ch_08.rs:4:11 [INFO] [stdout] | [INFO] [stdout] 4 | use std::{io::Write, net::TcpStream}; [INFO] [stdout] | ^^^^^^^^^ ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Cons`, `Nil` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | use crate::List::{Cons, Nil}; [INFO] [stdout] | ^^^^ ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `s` is never read [INFO] [stdout] --> rust_lang/examples/ref_slice.rs:13:13 [INFO] [stdout] | [INFO] [stdout] 13 | let mut s = "hello"; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> rust_lang/examples/ch_10.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | #[macro_use] [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Work` is imported redundantly [INFO] [stdout] --> rust_lang/examples/ch_10.rs:147:13 [INFO] [stdout] | [INFO] [stdout] 147 | use crate::Work; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 410 | / enum Work { [INFO] [stdout] 411 | | Task((usize, u8)), [INFO] [stdout] 412 | | Finished, [INFO] [stdout] 413 | | } [INFO] [stdout] | |_- the item `Work` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust_lang` due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `str_b` [INFO] [stdout] --> rust_lang/examples/lifetimes.rs:19:44 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn longest<'a, 'b: 'a>(str_a: &'a str, str_b: &'b str) -> &'a str { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_str_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `part` [INFO] [stdout] --> rust_lang/examples/lifetimes.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 24 | part: &'a str, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Borrow` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:2:19 [INFO] [stdout] | [INFO] [stdout] 2 | use std::borrow::{Borrow, BorrowMut}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `BorrowMut` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:2:27 [INFO] [stdout] | [INFO] [stdout] 2 | use std::borrow::{Borrow, BorrowMut}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `writer` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let writer: &mut dyn Write = &mut buf; [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_writer` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `combo` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:128:9 [INFO] [stdout] | [INFO] [stdout] 128 | let combo = left.splice(right); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_combo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `canvas` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:24:20 [INFO] [stdout] | [INFO] [stdout] 24 | fn draw(&self, canvas: &mut Canvas) { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_canvas` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:28:24 [INFO] [stdout] | [INFO] [stdout] 28 | fn hit_test(&self, x: i32, y: i32) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:28:32 [INFO] [stdout] | [INFO] [stdout] 28 | fn hit_test(&self, x: i32, y: i32) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rhs` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:106:22 [INFO] [stdout] | [INFO] [stdout] 106 | fn splice(&self, rhs: &Self) -> Self { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rhs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rhs` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:112:22 [INFO] [stdout] | [INFO] [stdout] 112 | fn splice(&self, rhs: &Self) -> Self { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rhs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rhs` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:135:22 [INFO] [stdout] | [INFO] [stdout] 135 | fn splice(&self, rhs: &dyn MegaSplice) -> Box { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rhs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rhs` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:141:22 [INFO] [stdout] | [INFO] [stdout] 141 | fn splice(&self, rhs: &dyn MegaSplice) -> Box { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rhs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `canvas` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:171:20 [INFO] [stdout] | [INFO] [stdout] 171 | fn draw(&self, canvas: &mut Canvas) { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_canvas` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:175:24 [INFO] [stdout] | [INFO] [stdout] 175 | fn hit_test(&self, x: i32, y: i32) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:175:32 [INFO] [stdout] | [INFO] [stdout] 175 | fn hit_test(&self, x: i32, y: i32) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `List` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:10:6 [INFO] [stdout] | [INFO] [stdout] 10 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 18 | fn new(t: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | Cons(i32, Rc), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:72:5 [INFO] [stdout] | [INFO] [stdout] 72 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sender` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:98:5 [INFO] [stdout] | [INFO] [stdout] 98 | sender: &'a T, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:164:5 [INFO] [stdout] | [INFO] [stdout] 164 | Cons(i32, RefCell>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Nil` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:165:5 [INFO] [stdout] | [INFO] [stdout] 165 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `tail` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:169:12 [INFO] [stdout] | [INFO] [stdout] 169 | pub fn tail(&self) -> Option<&RefCell>> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:218:5 [INFO] [stdout] | [INFO] [stdout] 218 | value: E, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `prev` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:219:5 [INFO] [stdout] | [INFO] [stdout] 219 | prev: LinkedNode, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `head` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:241:5 [INFO] [stdout] | [INFO] [stdout] 241 | head: LinkedNode, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `tail` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:242:5 [INFO] [stdout] | [INFO] [stdout] 242 | tail: LinkedNode, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `list` [INFO] [stdout] --> rust_lang/examples/smart_pointers.rs:327:5 [INFO] [stdout] | [INFO] [stdout] 327 | list: LinkedList, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `rayon::prelude` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:106:5 [INFO] [stdout] | [INFO] [stdout] 106 | use rayon::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `byte` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:195:33 [INFO] [stdout] | [INFO] [stdout] 195 | Operation::Noop(byte) => { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_byte` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `test_encoding_time` [INFO] [stdout] --> rust_lang/examples/ch_09.rs:9:4 [INFO] [stdout] | [INFO] [stdout] 9 | fn test_encoding_time() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Time` [INFO] [stdout] --> rust_lang/examples/ch_09.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | struct Time { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `unknown_words` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:206:4 [INFO] [stdout] | [INFO] [stdout] 206 | fn unknown_words(document: &[String], wordlist: &S) -> S { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `collect_into_vector` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:238:4 [INFO] [stdout] | [INFO] [stdout] 238 | fn collect_into_vector(iter: I) -> Vec { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `cyclical_zip` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:271:4 [INFO] [stdout] | [INFO] [stdout] 271 | fn cyclical_zip(v: Vec, u: Vec) -> Cycle, IntoIter>> { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `cyclical_zip2` [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:276:4 [INFO] [stdout] | [INFO] [stdout] 276 | fn cyclical_zip2(v: Vec, u: Vec) -> impl Iterator { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `input` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:103:5 [INFO] [stdout] | [INFO] [stdout] 103 | input: String, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `path` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:104:5 [INFO] [stdout] | [INFO] [stdout] 104 | path: String, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:108:8 [INFO] [stdout] | [INFO] [stdout] 108 | fn new(input: &str) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `with_path` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:116:8 [INFO] [stdout] | [INFO] [stdout] 116 | fn with_path(input: &str, path: &str) -> Self { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `parse` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:123:8 [INFO] [stdout] | [INFO] [stdout] 123 | fn parse(&self) -> Vec { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `convert` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:183:8 [INFO] [stdout] | [INFO] [stdout] 183 | fn convert(&self) -> Vec { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `generate_svg` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:208:8 [INFO] [stdout] | [INFO] [stdout] 208 | fn generate_svg(&self, path_data: Vec) -> Document { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `save` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:239:8 [INFO] [stdout] | [INFO] [stdout] 239 | fn save(&self) {} [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Forward` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:244:5 [INFO] [stdout] | [INFO] [stdout] 244 | Forward(isize), [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `TurnLeft` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:245:5 [INFO] [stdout] | [INFO] [stdout] 245 | TurnLeft, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `TurnRight` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:246:5 [INFO] [stdout] | [INFO] [stdout] 246 | TurnRight, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Home` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:247:5 [INFO] [stdout] | [INFO] [stdout] 247 | Home, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Noop` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:248:5 [INFO] [stdout] | [INFO] [stdout] 248 | Noop(usize), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `East` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:253:5 [INFO] [stdout] | [INFO] [stdout] 253 | East, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `South` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:254:5 [INFO] [stdout] | [INFO] [stdout] 254 | South, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `West` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:255:5 [INFO] [stdout] | [INFO] [stdout] 255 | West, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `North` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:256:5 [INFO] [stdout] | [INFO] [stdout] 256 | North, [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `WIDTH` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:270:1 [INFO] [stdout] | [INFO] [stdout] 270 | const WIDTH: isize = 400; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `HEIGHT` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:271:1 [INFO] [stdout] | [INFO] [stdout] 271 | const HEIGHT: isize = 400; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `HOME_X` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:272:1 [INFO] [stdout] | [INFO] [stdout] 272 | const HOME_X: isize = WIDTH / 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `HOME_Y` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:273:1 [INFO] [stdout] | [INFO] [stdout] 273 | const HOME_Y: isize = HEIGHT / 2; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `STROKE_WIDTH` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:274:1 [INFO] [stdout] | [INFO] [stdout] 274 | const STROKE_WIDTH: usize = 5; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `x` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:277:5 [INFO] [stdout] | [INFO] [stdout] 277 | x: isize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:278:5 [INFO] [stdout] | [INFO] [stdout] 278 | y: isize, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `heading` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:279:5 [INFO] [stdout] | [INFO] [stdout] 279 | heading: Orientation, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:283:8 [INFO] [stdout] | [INFO] [stdout] 283 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `forward` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:291:8 [INFO] [stdout] | [INFO] [stdout] 291 | fn forward(&mut self, distance: isize) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `home` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:304:8 [INFO] [stdout] | [INFO] [stdout] 304 | fn home(&mut self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `turn_left` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:309:8 [INFO] [stdout] | [INFO] [stdout] 309 | fn turn_left(&mut self) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `turn_right` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:320:8 [INFO] [stdout] | [INFO] [stdout] 320 | fn turn_right(&mut self) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `wrap` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:331:8 [INFO] [stdout] | [INFO] [stdout] 331 | fn wrap(&mut self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Ping` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:378:5 [INFO] [stdout] | [INFO] [stdout] 378 | Ping, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Pong` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:379:5 [INFO] [stdout] | [INFO] [stdout] 379 | Pong, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Pang` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:380:5 [INFO] [stdout] | [INFO] [stdout] 380 | Pang, [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Work` [INFO] [stdout] --> rust_lang/examples/ch_10.rs:410:6 [INFO] [stdout] | [INFO] [stdout] 410 | enum Work { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 39 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:80:9 [INFO] [stdout] | [INFO] [stdout] 80 | config.serialize(&mut serializer); [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 return value of `core::num::::abs` that must be used [INFO] [stdout] --> rust_lang/tests/traits_genrics.rs:224:5 [INFO] [stdout] | [INFO] [stdout] 224 | i64::abs(zero); [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the result of the operation, without modifying the original [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 22 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Write` [INFO] [stdout] --> rust_lang/examples/ch_07.rs:10:21 [INFO] [stdout] | [INFO] [stdout] 10 | use std::io::{Read, Write}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `PathBuf` [INFO] [stdout] --> rust_lang/examples/ch_07.rs:11:23 [INFO] [stdout] | [INFO] [stdout] 11 | use std::path::{Path, PathBuf}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `OpenOptions` [INFO] [stdout] --> rust_lang/examples/ch_07.rs:51:21 [INFO] [stdout] | [INFO] [stdout] 51 | use std::fs::{File, OpenOptions}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> rust_lang/examples/ch_07.rs:110:5 [INFO] [stdout] | [INFO] [stdout] 110 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `case_insensitive` [INFO] [stdout] --> rust_lang/examples/minigrep.rs:161:9 [INFO] [stdout] | [INFO] [stdout] 161 | case_insensitive: bool, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `basic_hash` [INFO] [stdout] --> rust_lang/examples/ch_07.rs:106:4 [INFO] [stdout] | [INFO] [stdout] 106 | fn basic_hash(key: &str) -> u32 { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> rust_lang/tests/operator_overloading.rs:169:8 [INFO] [stdout] | [INFO] [stdout] 169 | fn new(width: usize, height: usize) -> Image

{ [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rust_lang/examples/virtual_memory.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let mut n_nonzero = 0; [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: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "8e3d4d05d62938b50f90b125b2e0a1c2798a688d815e9162ef6abb53501638b5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8e3d4d05d62938b50f90b125b2e0a1c2798a688d815e9162ef6abb53501638b5", kill_on_drop: false }` [INFO] [stdout] 8e3d4d05d62938b50f90b125b2e0a1c2798a688d815e9162ef6abb53501638b5