[INFO] cloning repository https://github.com/Guang1234567/minigrep [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Guang1234567/minigrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuang1234567%2Fminigrep", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuang1234567%2Fminigrep'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ebf1c9da65374dbf50c51521d82a50ac9a8d16d8 [INFO] testing Guang1234567/minigrep against 1.60.0 for beta-1.61-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGuang1234567%2Fminigrep" "/workspace/builds/worker-117/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-117/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Guang1234567/minigrep 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/Guang1234567/minigrep [INFO] finished tweaking git repo https://github.com/Guang1234567/minigrep [INFO] tweaked toml for git repo https://github.com/Guang1234567/minigrep written to /workspace/builds/worker-117/source/Cargo.toml [INFO] crate git repo https://github.com/Guang1234567/minigrep 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] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-io-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-executor-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-channel-preview v0.3.0-alpha.17 [INFO] [stderr] Downloaded futures-preview v0.3.0-alpha.17 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2cf1cee72a8b36bff41ada0994e16a5f21ced5665ae0bc005a878c88f3c6dd11 [INFO] running `Command { std: "docker" "start" "-a" "2cf1cee72a8b36bff41ada0994e16a5f21ced5665ae0bc005a878c88f3c6dd11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2cf1cee72a8b36bff41ada0994e16a5f21ced5665ae0bc005a878c88f3c6dd11", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2cf1cee72a8b36bff41ada0994e16a5f21ced5665ae0bc005a878c88f3c6dd11", kill_on_drop: false }` [INFO] [stdout] 2cf1cee72a8b36bff41ada0994e16a5f21ced5665ae0bc005a878c88f3c6dd11 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] acae313b8d85bc25b8ba738d95e54fa36838a94cf91e6dfae6dcadfdc3f73871 [INFO] running `Command { std: "docker" "start" "-a" "acae313b8d85bc25b8ba738d95e54fa36838a94cf91e6dfae6dcadfdc3f73871", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling arrayvec v0.4.12 [INFO] [stderr] Compiling nodrop v0.1.14 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling futures-core-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling futures-io-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling try-lock v0.2.2 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling crossbeam-utils v0.6.6 [INFO] [stderr] Compiling tokio-sync v0.1.7 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling tokio-trace-core v0.1.0 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling hyper v0.12.35 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling futures-sink-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling futures-channel-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling tokio-executor v0.1.8 [INFO] [stderr] Compiling crossbeam-queue v0.1.2 [INFO] [stderr] Compiling indexmap v1.3.0 [INFO] [stderr] Compiling futures-util-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling want v0.2.0 [INFO] [stderr] Compiling tokio-current-thread v0.1.6 [INFO] [stderr] Compiling tokio-timer v0.2.11 [INFO] [stderr] Compiling crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling num_cpus v1.10.1 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling time v0.1.42 [INFO] [stderr] Compiling futures-cpupool v0.1.8 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling crossbeam-deque v0.7.1 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling mio v0.6.19 [INFO] [stderr] Compiling tokio-threadpool v0.1.16 [INFO] [stderr] Compiling futures-executor-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling tokio-io v0.1.12 [INFO] [stderr] Compiling http v0.1.19 [INFO] [stderr] Compiling tokio-buf v0.1.1 [INFO] [stderr] Compiling string v0.2.1 [INFO] [stderr] Compiling futures-preview v0.3.0-alpha.17 [INFO] [stderr] Compiling tokio-reactor v0.1.10 [INFO] [stderr] Compiling h2 v0.1.26 [INFO] [stderr] Compiling http-body v0.1.0 [INFO] [stderr] Compiling tokio-tcp v0.1.3 [INFO] [stderr] Compiling tokio v0.1.19 [INFO] [stderr] Compiling minigrep v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/thread_pool/mod.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::future::Future` [INFO] [stdout] --> src/thread_pool/mod.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::future::Future; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/print/mod.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{self, Write}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Write` [INFO] [stdout] --> src/print/mod.rs:2:21 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{self, Write}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> src/oop_demo/mod.rs:9:27 [INFO] [stdout] | [INFO] [stdout] 9 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Cacher` [INFO] [stdout] --> src/cache/mod.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct Cacher [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] --> src/cache/mod.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | fn new(calculation: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/cache/mod.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | fn value(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value2` [INFO] [stdout] --> src/cache/mod.rs:36:8 [INFO] [stdout] | [INFO] [stdout] 36 | fn value2(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value3` [INFO] [stdout] --> src/cache/mod.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | fn value3(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_some` [INFO] [stdout] --> src/cache/mod.rs:57:8 [INFO] [stdout] | [INFO] [stdout] 57 | fn is_some(&self) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_none` [INFO] [stdout] --> src/cache/mod.rs:64:8 [INFO] [stdout] | [INFO] [stdout] 64 | fn is_none(&self) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/iterator/mod.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | fn new() -> Counter { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/deref/mod.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | fn new(x: T) -> MyBox { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `List` [INFO] [stdout] --> src/memory/mod.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/memory/mod.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | Cons(T, RefCell>>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListMemoryLeak` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/memory/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[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: `Nil` [INFO] [stdout] --> src/memory/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListMemoryLeak` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/memory/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[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: `tail` [INFO] [stdout] --> src/memory/mod.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | fn tail(&self) -> Option<&RefCell>>> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/rc/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Cons(T, &'a Box>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `Nil` [INFO] [stdout] --> src/rc/mod.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `Cons` [INFO] [stdout] --> src/rc/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | Cons(T, Rc>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRcVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:10:10 [INFO] [stdout] | [INFO] [stdout] 10 | #[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: `Nil` [INFO] [stdout] --> src/rc/mod.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRcVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:10:10 [INFO] [stdout] | [INFO] [stdout] 10 | #[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: `Cons` [INFO] [stdout] --> src/rc/mod.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | Cons(Rc>, Rc>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRcRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:16:10 [INFO] [stdout] | [INFO] [stdout] 16 | #[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: `Nil` [INFO] [stdout] --> src/rc/mod.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRcRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:16:10 [INFO] [stdout] | [INFO] [stdout] 16 | #[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: struct is never constructed: `LimitTracker` [INFO] [stdout] --> src/ref_demo/mod.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct LimitTracker<'a, T> [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/ref_demo/mod.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn new(messenger: &'a T, max: usize) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `set_value` [INFO] [stdout] --> src/ref_demo/mod.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 24 | pub fn set_value(&mut self, value: usize) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> src/tree/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | value: T, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/tree/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `parent` [INFO] [stdout] --> src/tree/mod.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | parent: RefCell>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/tree/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `children` [INFO] [stdout] --> src/tree/mod.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | children: RefCell>>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/tree/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `new` [INFO] [stdout] --> src/oop_demo/mod.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/oop_demo/mod.rs:88:8 [INFO] [stdout] | [INFO] [stdout] 88 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_text` [INFO] [stdout] --> src/oop_demo/mod.rs:95:12 [INFO] [stdout] | [INFO] [stdout] 95 | pub fn add_text(&mut self, text: &str) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `content` [INFO] [stdout] --> src/oop_demo/mod.rs:99:12 [INFO] [stdout] | [INFO] [stdout] 99 | pub fn content(&self) -> &str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `request_review` [INFO] [stdout] --> src/oop_demo/mod.rs:103:12 [INFO] [stdout] | [INFO] [stdout] 103 | pub fn request_review(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `approve` [INFO] [stdout] --> src/oop_demo/mod.rs:109:12 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn approve(&mut self) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `id` [INFO] [stdout] --> src/thread_pool/mod.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | id: usize, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 37 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::process; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 47.70s [INFO] running `Command { std: "docker" "inspect" "acae313b8d85bc25b8ba738d95e54fa36838a94cf91e6dfae6dcadfdc3f73871", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "acae313b8d85bc25b8ba738d95e54fa36838a94cf91e6dfae6dcadfdc3f73871", kill_on_drop: false }` [INFO] [stdout] acae313b8d85bc25b8ba738d95e54fa36838a94cf91e6dfae6dcadfdc3f73871 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 74c66715388b1193a83bba71fd9eb11c635d6b763925d7d4b99e707227f3a2b3 [INFO] running `Command { std: "docker" "start" "-a" "74c66715388b1193a83bba71fd9eb11c635d6b763925d7d4b99e707227f3a2b3", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/thread_pool/mod.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::future::Future` [INFO] [stdout] --> src/thread_pool/mod.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::future::Future; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/print/mod.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{self, Write}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Write` [INFO] [stdout] --> src/print/mod.rs:2:21 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{self, Write}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> src/oop_demo/mod.rs:9:27 [INFO] [stdout] | [INFO] [stdout] 9 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Cacher` [INFO] [stdout] --> src/cache/mod.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | struct Cacher [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] --> src/cache/mod.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | fn new(calculation: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/cache/mod.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | fn value(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value2` [INFO] [stdout] --> src/cache/mod.rs:36:8 [INFO] [stdout] | [INFO] [stdout] 36 | fn value2(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value3` [INFO] [stdout] --> src/cache/mod.rs:47:8 [INFO] [stdout] | [INFO] [stdout] 47 | fn value3(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_some` [INFO] [stdout] --> src/cache/mod.rs:57:8 [INFO] [stdout] | [INFO] [stdout] 57 | fn is_some(&self) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `is_none` [INFO] [stdout] --> src/cache/mod.rs:64:8 [INFO] [stdout] | [INFO] [stdout] 64 | fn is_none(&self) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/iterator/mod.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | fn new() -> Counter { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/deref/mod.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | fn new(x: T) -> MyBox { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `List` [INFO] [stdout] --> src/memory/mod.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | enum List { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/memory/mod.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | Cons(T, RefCell>>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListMemoryLeak` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/memory/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[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: `Nil` [INFO] [stdout] --> src/memory/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListMemoryLeak` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/memory/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[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: `tail` [INFO] [stdout] --> src/memory/mod.rs:16:8 [INFO] [stdout] | [INFO] [stdout] 16 | fn tail(&self) -> Option<&RefCell>>> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Cons` [INFO] [stdout] --> src/rc/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Cons(T, &'a Box>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `Nil` [INFO] [stdout] --> src/rc/mod.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `Cons` [INFO] [stdout] --> src/rc/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | Cons(T, Rc>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRcVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:10:10 [INFO] [stdout] | [INFO] [stdout] 10 | #[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: `Nil` [INFO] [stdout] --> src/rc/mod.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRcVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:10:10 [INFO] [stdout] | [INFO] [stdout] 10 | #[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: `Cons` [INFO] [stdout] --> src/rc/mod.rs:18:5 [INFO] [stdout] | [INFO] [stdout] 18 | Cons(Rc>, Rc>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRcRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:16:10 [INFO] [stdout] | [INFO] [stdout] 16 | #[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: `Nil` [INFO] [stdout] --> src/rc/mod.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | Nil, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] note: `ListRcRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/rc/mod.rs:16:10 [INFO] [stdout] | [INFO] [stdout] 16 | #[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: struct is never constructed: `LimitTracker` [INFO] [stdout] --> src/ref_demo/mod.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct LimitTracker<'a, T> [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/ref_demo/mod.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn new(messenger: &'a T, max: usize) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `set_value` [INFO] [stdout] --> src/ref_demo/mod.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 24 | pub fn set_value(&mut self, value: usize) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> src/tree/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | value: T, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/tree/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `parent` [INFO] [stdout] --> src/tree/mod.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | parent: RefCell>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/tree/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `children` [INFO] [stdout] --> src/tree/mod.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | children: RefCell>>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/tree/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `new` [INFO] [stdout] --> src/oop_demo/mod.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 24 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/oop_demo/mod.rs:88:8 [INFO] [stdout] | [INFO] [stdout] 88 | fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `add_text` [INFO] [stdout] --> src/oop_demo/mod.rs:95:12 [INFO] [stdout] | [INFO] [stdout] 95 | pub fn add_text(&mut self, text: &str) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `content` [INFO] [stdout] --> src/oop_demo/mod.rs:99:12 [INFO] [stdout] | [INFO] [stdout] 99 | pub fn content(&self) -> &str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `request_review` [INFO] [stdout] --> src/oop_demo/mod.rs:103:12 [INFO] [stdout] | [INFO] [stdout] 103 | pub fn request_review(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `approve` [INFO] [stdout] --> src/oop_demo/mod.rs:109:12 [INFO] [stdout] | [INFO] [stdout] 109 | pub fn approve(&mut self) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `id` [INFO] [stdout] --> src/thread_pool/mod.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | id: usize, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 37 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling minigrep v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::env` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::env; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::process; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/thread_demo/mod.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Arc`, `Mutex` [INFO] [stdout] --> src/oop_demo/mod.rs:119:21 [INFO] [stdout] | [INFO] [stdout] 119 | use std::sync::{Arc, Mutex}; [INFO] [stdout] | ^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::sync::mpsc` [INFO] [stdout] --> src/oop_demo/mod.rs:120:9 [INFO] [stdout] | [INFO] [stdout] 120 | use std::sync::mpsc; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> src/oop_demo/mod.rs:121:9 [INFO] [stdout] | [INFO] [stdout] 121 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::time::Duration` [INFO] [stdout] --> src/oop_demo/mod.rs:122:9 [INFO] [stdout] | [INFO] [stdout] 122 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::*` [INFO] [stdout] --> src/server_demo/mod.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | use super::*; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::error::Error` [INFO] [stdout] --> src/thread_pool/mod.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::future::Future` [INFO] [stdout] --> src/thread_pool/mod.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::future::Future; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `post` [INFO] [stdout] --> src/oop_demo/mod.rs:9:27 [INFO] [stdout] | [INFO] [stdout] 9 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `z` [INFO] [stdout] --> src/deref/mod.rs:27:13 [INFO] [stdout] | [INFO] [stdout] 27 | let z = MyBox::new(String::from("Rust")); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/memory/mod.rs:33:13 [INFO] [stdout] | [INFO] [stdout] 33 | let b = Cons(3, a.clone()); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/memory/mod.rs:34:13 [INFO] [stdout] | [INFO] [stdout] 34 | 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: `b` [INFO] [stdout] --> src/rc/mod.rs:55:13 [INFO] [stdout] | [INFO] [stdout] 55 | let b = Cons(3, Rc::clone(&a)); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `c` [INFO] [stdout] --> src/rc/mod.rs:58:17 [INFO] [stdout] | [INFO] [stdout] 58 | 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: `producer` [INFO] [stdout] --> src/thread_demo/mod.rs:49:13 [INFO] [stdout] | [INFO] [stdout] 49 | let producer = thread::spawn(move || { [INFO] [stdout] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_producer` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `value` [INFO] [stdout] --> src/cache/mod.rs:20:8 [INFO] [stdout] | [INFO] [stdout] 20 | fn value(&mut self, arg: U) -> &R [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: `value2` [INFO] [stdout] --> src/cache/mod.rs:36:8 [INFO] [stdout] | [INFO] [stdout] 36 | fn value2(&mut self, arg: U) -> &R [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> src/tree/mod.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | value: T, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/tree/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `children` [INFO] [stdout] --> src/tree/mod.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | children: RefCell>>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/tree/mod.rs:4:10 [INFO] [stdout] | [INFO] [stdout] 4 | #[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: `id` [INFO] [stdout] --> src/thread_pool/mod.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | id: usize, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/print/mod.rs:88:9 [INFO] [stdout] | [INFO] [stdout] 88 | writeln!(&mut some_writer, "{} - {}", 123, 789); [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] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 3.38s [INFO] [stdout] warning: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "74c66715388b1193a83bba71fd9eb11c635d6b763925d7d4b99e707227f3a2b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "74c66715388b1193a83bba71fd9eb11c635d6b763925d7d4b99e707227f3a2b3", kill_on_drop: false }` [INFO] [stdout] 74c66715388b1193a83bba71fd9eb11c635d6b763925d7d4b99e707227f3a2b3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 802c73f693026c11fd5f24bcc7bbb952912ef6759f1e79bed555f9280bff6dae [INFO] running `Command { std: "docker" "start" "-a" "802c73f693026c11fd5f24bcc7bbb952912ef6759f1e79bed555f9280bff6dae", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `std::error::Error` [INFO] [stderr] --> src/thread_pool/mod.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::error::Error; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::future::Future` [INFO] [stderr] --> src/thread_pool/mod.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::future::Future; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `self` [INFO] [stderr] --> src/print/mod.rs:2:15 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::{self, Write}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Write` [INFO] [stderr] --> src/print/mod.rs:2:21 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::{self, Write}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `post` [INFO] [stderr] --> src/oop_demo/mod.rs:9:27 [INFO] [stderr] | [INFO] [stderr] 9 | fn content<'a>(&self, post: &'a Post) -> &'a str { [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_post` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Cacher` [INFO] [stderr] --> src/cache/mod.rs:5:8 [INFO] [stderr] | [INFO] [stderr] 5 | struct Cacher [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/cache/mod.rs:12:8 [INFO] [stderr] | [INFO] [stderr] 12 | fn new(calculation: T) -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `value` [INFO] [stderr] --> src/cache/mod.rs:20:8 [INFO] [stderr] | [INFO] [stderr] 20 | fn value(&mut self, arg: U) -> &R [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `value2` [INFO] [stderr] --> src/cache/mod.rs:36:8 [INFO] [stderr] | [INFO] [stderr] 36 | fn value2(&mut self, arg: U) -> &R [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `value3` [INFO] [stderr] --> src/cache/mod.rs:47:8 [INFO] [stderr] | [INFO] [stderr] 47 | fn value3(&mut self, arg: U) -> &R [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `is_some` [INFO] [stderr] --> src/cache/mod.rs:57:8 [INFO] [stderr] | [INFO] [stderr] 57 | fn is_some(&self) -> bool { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `is_none` [INFO] [stderr] --> src/cache/mod.rs:64:8 [INFO] [stderr] | [INFO] [stderr] 64 | fn is_none(&self) -> bool { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/iterator/mod.rs:6:8 [INFO] [stderr] | [INFO] [stderr] 6 | fn new() -> Counter { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/deref/mod.rs:6:8 [INFO] [stderr] | [INFO] [stderr] 6 | fn new(x: T) -> MyBox { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: enum is never used: `List` [INFO] [stderr] --> src/memory/mod.rs:4:6 [INFO] [stderr] | [INFO] [stderr] 4 | enum List { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Cons` [INFO] [stderr] --> src/memory/mod.rs:11:5 [INFO] [stderr] | [INFO] [stderr] 11 | Cons(T, RefCell>>), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `ListMemoryLeak` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/memory/mod.rs:9:10 [INFO] [stderr] | [INFO] [stderr] 9 | #[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: `Nil` [INFO] [stderr] --> src/memory/mod.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | Nil, [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] note: `ListMemoryLeak` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/memory/mod.rs:9:10 [INFO] [stderr] | [INFO] [stderr] 9 | #[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: `tail` [INFO] [stderr] --> src/memory/mod.rs:16:8 [INFO] [stderr] | [INFO] [stderr] 16 | fn tail(&self) -> Option<&RefCell>>> { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Cons` [INFO] [stderr] --> src/rc/mod.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | Cons(T, &'a Box>), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `ListRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/rc/mod.rs:4:10 [INFO] [stderr] | [INFO] [stderr] 4 | #[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: `Nil` [INFO] [stderr] --> src/rc/mod.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | Nil, [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] note: `ListRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/rc/mod.rs:4:10 [INFO] [stderr] | [INFO] [stderr] 4 | #[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: `Cons` [INFO] [stderr] --> src/rc/mod.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | Cons(T, Rc>), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `ListRcVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/rc/mod.rs:10:10 [INFO] [stderr] | [INFO] [stderr] 10 | #[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: `Nil` [INFO] [stderr] --> src/rc/mod.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | Nil, [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] note: `ListRcVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/rc/mod.rs:10:10 [INFO] [stderr] | [INFO] [stderr] 10 | #[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: `Cons` [INFO] [stderr] --> src/rc/mod.rs:18:5 [INFO] [stderr] | [INFO] [stderr] 18 | Cons(Rc>, Rc>), [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `ListRcRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/rc/mod.rs:16:10 [INFO] [stderr] | [INFO] [stderr] 16 | #[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: `Nil` [INFO] [stderr] --> src/rc/mod.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | Nil, [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] note: `ListRcRefVersion` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/rc/mod.rs:16:10 [INFO] [stderr] | [INFO] [stderr] 16 | #[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: struct is never constructed: `LimitTracker` [INFO] [stderr] --> src/ref_demo/mod.rs:5:12 [INFO] [stderr] | [INFO] [stderr] 5 | pub struct LimitTracker<'a, T> [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/ref_demo/mod.rs:16:12 [INFO] [stderr] | [INFO] [stderr] 16 | pub fn new(messenger: &'a T, max: usize) -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `set_value` [INFO] [stderr] --> src/ref_demo/mod.rs:24:12 [INFO] [stderr] | [INFO] [stderr] 24 | pub fn set_value(&mut self, value: usize) { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `value` [INFO] [stderr] --> src/tree/mod.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | value: T, [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/tree/mod.rs:4:10 [INFO] [stderr] | [INFO] [stderr] 4 | #[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: `parent` [INFO] [stderr] --> src/tree/mod.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | parent: RefCell>>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/tree/mod.rs:4:10 [INFO] [stderr] | [INFO] [stderr] 4 | #[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: `children` [INFO] [stderr] --> src/tree/mod.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | children: RefCell>>>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/tree/mod.rs:4:10 [INFO] [stderr] | [INFO] [stderr] 4 | #[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: `new` [INFO] [stderr] --> src/oop_demo/mod.rs:24:8 [INFO] [stderr] | [INFO] [stderr] 24 | fn new() -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/oop_demo/mod.rs:88:8 [INFO] [stderr] | [INFO] [stderr] 88 | fn new() -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `add_text` [INFO] [stderr] --> src/oop_demo/mod.rs:95:12 [INFO] [stderr] | [INFO] [stderr] 95 | pub fn add_text(&mut self, text: &str) { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `content` [INFO] [stderr] --> src/oop_demo/mod.rs:99:12 [INFO] [stderr] | [INFO] [stderr] 99 | pub fn content(&self) -> &str { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `request_review` [INFO] [stderr] --> src/oop_demo/mod.rs:103:12 [INFO] [stderr] | [INFO] [stderr] 103 | pub fn request_review(&mut self) { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `approve` [INFO] [stderr] --> src/oop_demo/mod.rs:109:12 [INFO] [stderr] | [INFO] [stderr] 109 | pub fn approve(&mut self) { [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `id` [INFO] [stderr] --> src/thread_pool/mod.rs:36:5 [INFO] [stderr] | [INFO] [stderr] 36 | id: usize, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/thread_demo/mod.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Arc`, `Mutex` [INFO] [stderr] --> src/oop_demo/mod.rs:119:21 [INFO] [stderr] | [INFO] [stderr] 119 | use std::sync::{Arc, Mutex}; [INFO] [stderr] | ^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::sync::mpsc` [INFO] [stderr] --> src/oop_demo/mod.rs:120:9 [INFO] [stderr] | [INFO] [stderr] 120 | use std::sync::mpsc; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/oop_demo/mod.rs:121:9 [INFO] [stderr] | [INFO] [stderr] 121 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::time::Duration` [INFO] [stderr] --> src/oop_demo/mod.rs:122:9 [INFO] [stderr] | [INFO] [stderr] 122 | use std::time::Duration; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `super::*` [INFO] [stderr] --> src/server_demo/mod.rs:10:9 [INFO] [stderr] | [INFO] [stderr] 10 | use super::*; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::error::Error` [INFO] [stderr] --> src/thread_pool/mod.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::error::Error; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `z` [INFO] [stderr] --> src/deref/mod.rs:27:13 [INFO] [stderr] | [INFO] [stderr] 27 | let z = MyBox::new(String::from("Rust")); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_z` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/memory/mod.rs:33:13 [INFO] [stderr] | [INFO] [stderr] 33 | let b = Cons(3, a.clone()); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/memory/mod.rs:34:13 [INFO] [stderr] | [INFO] [stderr] 34 | 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: `b` [INFO] [stderr] --> src/rc/mod.rs:55:13 [INFO] [stderr] | [INFO] [stderr] 55 | let b = Cons(3, Rc::clone(&a)); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `c` [INFO] [stderr] --> src/rc/mod.rs:58:17 [INFO] [stderr] | [INFO] [stderr] 58 | 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: `producer` [INFO] [stderr] --> src/thread_demo/mod.rs:49:13 [INFO] [stderr] | [INFO] [stderr] 49 | let producer = thread::spawn(move || { [INFO] [stderr] | ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_producer` [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `value` [INFO] [stderr] --> src/cache/mod.rs:20:8 [INFO] [stderr] | [INFO] [stderr] 20 | fn value(&mut self, arg: U) -> &R [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/print/mod.rs:88:9 [INFO] [stderr] | [INFO] [stderr] 88 | writeln!(&mut some_writer, "{} - {}", 123, 789); [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] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: `minigrep` (lib) generated 37 warnings [INFO] [stderr] warning: `minigrep` (lib test) generated 21 warnings (6 duplicates) [INFO] [stderr] warning: unused import: `std::env` [INFO] [stderr] --> src/main.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::env; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::process` [INFO] [stderr] --> src/main.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::process; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `minigrep` (bin "minigrep" test) generated 2 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 4.51s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/minigrep-71d67c301c071885) [INFO] [stdout] [INFO] [stdout] running 23 tests [INFO] [stdout] test deref::tests::it_works ... ok [INFO] [stdout] test iterator::tests::using_other_iterator_trait_methods ... ok [INFO] [stdout] test iterator::tests::iterator_demonstration ... ok [INFO] [stdout] test iterator::tests::iterator_sum ... ok [INFO] [stdout] test iterator::tests::calling_next_directly ... ok [INFO] [stdout] test oop_demo::tests::it_works ... ok [INFO] [stdout] test memory::tests::it_works2 ... ok [INFO] [stdout] test memory::tests::it_works ... ok [INFO] [stdout] test rc::tests::test_list_rc_ref_version ... ok [INFO] [stdout] test rc::tests::test_list_rc_version ... ok [INFO] [stdout] test server_demo::tests::it_works ... ok [INFO] [stdout] test search::tests::case_sensitive ... ok [INFO] [stdout] test ref_demo::tests::it_sends_an_over_75_percent_warning_message ... ok [INFO] [stdout] test thread_demo::tests::it_works2 ... ok [INFO] [stdout] test tree::tests::it_works ... ok [INFO] [stdout] test rc::tests::test_list_ref_version ... ok [INFO] [stdout] 123 - 789 [INFO] [stdout] test print::tests::it_works ... ok [INFO] [stdout] test thread_demo::tests::it_works_channel ... ok [INFO] [stdout] test search::tests::case_insensitive ... ok [INFO] [stdout] test thread_demo::tests::it_works ... ok [INFO] [stdout] test thread_demo::tests::it_works_mutex ... ok [INFO] [stdout] test cache::tests::it_works ... ok [INFO] [stdout] test thread_pool::tests::it_works ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 6.01s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/minigrep-c1ce1f9a2e110ab0) [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] [stderr] Doc-tests minigrep [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" "802c73f693026c11fd5f24bcc7bbb952912ef6759f1e79bed555f9280bff6dae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "802c73f693026c11fd5f24bcc7bbb952912ef6759f1e79bed555f9280bff6dae", kill_on_drop: false }` [INFO] [stdout] 802c73f693026c11fd5f24bcc7bbb952912ef6759f1e79bed555f9280bff6dae