[INFO] cloning repository https://github.com/lforeverhao/rust_learn [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lforeverhao/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flforeverhao%2Frust_learn", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flforeverhao%2Frust_learn'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5c0fa028aa8343016f141e54ddace34b70347b38 [INFO] checking lforeverhao/rust_learn against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flforeverhao%2Frust_learn" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. 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573d4868243f265712bdeb840fe63977cd5cba9afa9794836faa2f31cd385e17 [INFO] running `Command { std: "docker" "start" "-a" "573d4868243f265712bdeb840fe63977cd5cba9afa9794836faa2f31cd385e17", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "573d4868243f265712bdeb840fe63977cd5cba9afa9794836faa2f31cd385e17", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "573d4868243f265712bdeb840fe63977cd5cba9afa9794836faa2f31cd385e17", kill_on_drop: false }` [INFO] [stdout] 573d4868243f265712bdeb840fe63977cd5cba9afa9794836faa2f31cd385e17 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 22672de8f3cd39f33f18547d8d239d5c121088a662f2f5b76b2869c5e8b0ba4e [INFO] running `Command { std: "docker" "start" "-a" "22672de8f3cd39f33f18547d8d239d5c121088a662f2f5b76b2869c5e8b0ba4e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking futures v0.1.29 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Checking either v1.5.3 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Checking smallvec v0.6.13 [INFO] [stderr] Compiling crossbeam-utils v0.7.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking lock_api v0.3.2 [INFO] [stderr] Compiling crossbeam-epoch v0.8.0 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling memoffset v0.5.3 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Compiling indexmap v1.3.0 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.11.1 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking mio v0.6.21 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Checking tokio-executor v0.1.9 [INFO] [stderr] Checking tokio-sync v0.1.7 [INFO] [stderr] Checking crossbeam-deque v0.7.2 [INFO] [stderr] Checking tokio-io v0.1.12 [INFO] [stderr] Checking http v0.1.21 [INFO] [stderr] Checking tokio-current-thread v0.1.6 [INFO] [stderr] Checking tokio-threadpool v0.1.17 [INFO] [stderr] Checking tokio-timer v0.2.12 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking tokio-buf v0.1.1 [INFO] [stderr] Checking tokio-codec v0.1.1 [INFO] [stderr] Checking tokio-reactor v0.1.11 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking string v0.2.1 [INFO] [stderr] Compiling hyper v0.12.35 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking try-lock v0.2.2 [INFO] [stderr] Checking want v0.2.0 [INFO] [stderr] Checking tokio-udp v0.1.5 [INFO] [stderr] Checking tokio-uds v0.2.5 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking test_api v0.1.0 (/opt/rustwide/workdir/test_api) [INFO] [stderr] Checking test_string v0.1.0 (/opt/rustwide/workdir/test_string) [INFO] [stdout] warning: unused import: `std::str::Chars` [INFO] [stdout] --> test_string/src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::str::Chars; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Metadata` [INFO] [stdout] --> test_api/src/main.rs:1:21 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fs::{File, Metadata, read_to_string}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Error` [INFO] [stdout] --> test_api/src/main.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Error, Read}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `showStr` is never used [INFO] [stdout] --> test_string/src/main.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn showStr(s: &str) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `showStr` should have a snake case name [INFO] [stdout] --> test_string/src/main.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn showStr(s: &str) { [INFO] [stdout] | ^^^^^^^ help: convert the identifier to snake case: `show_str` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `result` [INFO] [stdout] --> test_api/src/main.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let mut result = [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> test_api/src/main.rs:19:9 [INFO] [stdout] | [INFO] [stdout] 19 | let mut result = [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: `file` [INFO] [stdout] --> test_api/src/main.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let file = File::open("Cargo.toml1").expect("some thing wrong"); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_file` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `result` [INFO] [stdout] --> test_api/src/main.rs:43:9 [INFO] [stdout] | [INFO] [stdout] 43 | let result = chain.read_to_string(&mut buffer); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `result` [INFO] [stdout] --> test_api/src/main.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 63 | let result = read_to_string("Cargo.toml"); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> test_api/src/main.rs:23:17 [INFO] [stdout] | [INFO] [stdout] 23 | f.read_to_string(&mut s); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 23 | let _ = f.read_to_string(&mut s); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking test_borrow v0.1.0 (/opt/rustwide/workdir/test_borrow) [INFO] [stdout] warning: unused imports: `Metadata`, `read_to_string` [INFO] [stdout] --> test_api/src/main.rs:1:21 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fs::{File, Metadata, read_to_string}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Error` [INFO] [stdout] --> test_api/src/main.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Error, Read}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking test_collection v0.1.0 (/opt/rustwide/workdir/test_collection) [INFO] [stdout] warning: function `process_err` is never used [INFO] [stdout] --> test_api/src/main.rs:54:4 [INFO] [stdout] | [INFO] [stdout] 54 | fn process_err(s: String) -> io::Result { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking test_lifetime v0.1.0 (/opt/rustwide/workdir/test_lifetime) [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> test_collection/src/lib.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::str::Chars` [INFO] [stdout] --> test_string/src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::str::Chars; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> test_collection/src/lib.rs:3:4 [INFO] [stdout] | [INFO] [stdout] 3 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `showStr` should have a snake case name [INFO] [stdout] --> test_string/src/main.rs:17:4 [INFO] [stdout] | [INFO] [stdout] 17 | fn showStr(s: &str) { [INFO] [stdout] | ^^^^^^^ help: convert the identifier to snake case: `show_str` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find function `longest1` in this scope [INFO] [stdout] --> test_lifetime/src/lib.rs:34:20 [INFO] [stdout] | [INFO] [stdout] 24 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ------------------------------------------------- similarly named function `longest` defined here [INFO] [stdout] ... [INFO] [stdout] 34 | let longest1 = longest1("1", "2"); [INFO] [stdout] | ^^^^^^^^ help: a function with a similar name exists: `longest` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking test_concurrent v0.1.0 (/opt/rustwide/workdir/test_concurrent) [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0425`. [INFO] [stdout] [INFO] [stderr] error: could not compile `test_lifetime` (lib test) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused variable: `len` [INFO] [stdout] --> test_collection/src/lib.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | let len = map.len(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_len` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> test_concurrent/src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::time::Duration` [INFO] [stdout] --> test_concurrent/src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::sync::mpsc` [INFO] [stdout] --> test_concurrent/src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::sync::mpsc; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::sync::Arc` [INFO] [stdout] --> test_concurrent/src/thread_test.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::sync::Arc; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module [INFO] [stdout] --> test_concurrent/src/main.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | mod thread_test; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow` [INFO] [stdout] --> test_concurrent/src/mutex.rs:1:19 [INFO] [stdout] | [INFO] [stdout] 1 | use std::borrow::{Borrow, BorrowMut}; [INFO] [stdout] | ^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Cell`, `RefCell` [INFO] [stdout] --> test_concurrent/src/arc.rs:1:17 [INFO] [stdout] | [INFO] [stdout] 1 | use std::cell::{Cell, RefCell}; [INFO] [stdout] | ^^^^ ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::time::Duration` [INFO] [stdout] --> test_concurrent/src/atomic.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::time::Duration; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `main` is never used [INFO] [stdout] --> test_lifetime/src/lib.rs:1:4 [INFO] [stdout] | [INFO] [stdout] 1 | fn main() {} [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `longest` is never used [INFO] [stdout] --> test_lifetime/src/lib.rs:24:4 [INFO] [stdout] | [INFO] [stdout] 24 | fn longest<'a>(x: &'a str, y: &'a str) -> &'a str { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> test_concurrent/src/channel.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 63 | for i in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `handle` [INFO] [stdout] --> test_concurrent/src/channel.rs:65:13 [INFO] [stdout] | [INFO] [stdout] 65 | let handle = thread::spawn(move || { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> test_concurrent/src/channel.rs:72:9 [INFO] [stdout] | [INFO] [stdout] 72 | for x in receiver { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> test_concurrent/src/mutex.rs:10:13 [INFO] [stdout] | [INFO] [stdout] 10 | for i in 0..COUNT { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> test_concurrent/src/mutex.rs:18:13 [INFO] [stdout] | [INFO] [stdout] 18 | for i in 0..COUNT { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> test_concurrent/src/mutex.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | for i in 0..COUNT { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `index` [INFO] [stdout] --> test_concurrent/src/arc.rs:9:9 [INFO] [stdout] | [INFO] [stdout] 9 | for index in 0..10 { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_index` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> test_concurrent/src/atomic.rs:12:13 [INFO] [stdout] | [INFO] [stdout] 12 | for x in 0..COUNT { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> test_concurrent/src/atomic.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | for x in 0..COUNT { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> test_concurrent/src/atomic.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | for x in 0..COUNT { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `run_sync_channel` is never used [INFO] [stdout] --> test_concurrent/src/channel.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn run_sync_channel() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `run_async_channel` is never used [INFO] [stdout] --> test_concurrent/src/channel.rs:33:8 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn run_async_channel() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `multi_sender_one_receiver` is never used [INFO] [stdout] --> test_concurrent/src/channel.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | pub fn multi_sender_one_receiver() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `create_thread` is never used [INFO] [stdout] --> test_concurrent/src/thread_test.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn create_thread() { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `park_thread` is never used [INFO] [stdout] --> test_concurrent/src/thread_test.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | pub fn park_thread() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `create_thread_move` is never used [INFO] [stdout] --> test_concurrent/src/thread_test.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn create_thread_move() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `create_thread_no_move` is never used [INFO] [stdout] --> test_concurrent/src/thread_test.rs:39:8 [INFO] [stdout] | [INFO] [stdout] 39 | pub fn create_thread_no_move() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `mutex_test` is never used [INFO] [stdout] --> test_concurrent/src/mutex.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn mutex_test() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `arc_cross_thread` is never used [INFO] [stdout] --> test_concurrent/src/arc.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | pub fn arc_cross_thread() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `arc_one_write_multi_read` is never used [INFO] [stdout] --> test_concurrent/src/arc.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn arc_one_write_multi_read() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `atomic_test` is never used [INFO] [stdout] --> test_concurrent/src/atomic.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | pub fn atomic_test() { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> test_concurrent/src/thread_test.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | handle.join(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 12 | let _ = handle.join(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> test_concurrent/src/thread_test.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | handle.join(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 25 | let _ = handle.join(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `arcClone` should have a snake case name [INFO] [stdout] --> test_concurrent/src/mutex.rs:8:9 [INFO] [stdout] | [INFO] [stdout] 8 | let arcClone = arc.clone(); [INFO] [stdout] | ^^^^^^^^ help: convert the identifier to snake case: `arc_clone` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `arcClone1` should have a snake case name [INFO] [stdout] --> test_concurrent/src/mutex.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let arcClone1 = arc.clone(); [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to snake case: `arc_clone1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `arcClone2` should have a snake case name [INFO] [stdout] --> test_concurrent/src/mutex.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let arcClone2 = arc.clone(); [INFO] [stdout] | ^^^^^^^^^ help: convert the identifier to snake case: `arc_clone2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> test_concurrent/src/mutex.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | handle.join(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 31 | let _ = handle.join(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> test_concurrent/src/mutex.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | handle1.join(); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 32 | let _ = handle1.join(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> test_concurrent/src/mutex.rs:33:5 [INFO] [stdout] | [INFO] [stdout] 33 | handle2.join(); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 33 | let _ = handle2.join(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> test_concurrent/src/atomic.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | thread.join(); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 30 | let _ = thread.join(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> test_concurrent/src/atomic.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | thread1.join(); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 31 | let _ = thread1.join(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> test_concurrent/src/atomic.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | thread2.join(); [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 32 | let _ = thread2.join(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 39 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "22672de8f3cd39f33f18547d8d239d5c121088a662f2f5b76b2869c5e8b0ba4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "22672de8f3cd39f33f18547d8d239d5c121088a662f2f5b76b2869c5e8b0ba4e", kill_on_drop: false }` [INFO] [stdout] 22672de8f3cd39f33f18547d8d239d5c121088a662f2f5b76b2869c5e8b0ba4e