[INFO] cloning repository https://github.com/kdwk/playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kdwk/playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdwk%2Fplayground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdwk%2Fplayground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e3c14362b08fa789d4ed0808944638f5c12864af [INFO] checking kdwk/playground against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdwk%2Fplayground" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kdwk/playground on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kdwk/playground [INFO] finished tweaking git repo https://github.com/kdwk/playground [INFO] tweaked toml for git repo https://github.com/kdwk/playground written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/kdwk/playground already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false 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[INFO] running `Command { std: "docker" "start" "-a" "f1c9ac9c9c31a71b70ba1b0565fc3eea16d4225bcb4db52b1f29515aeff5e17a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f1c9ac9c9c31a71b70ba1b0565fc3eea16d4225bcb4db52b1f29515aeff5e17a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f1c9ac9c9c31a71b70ba1b0565fc3eea16d4225bcb4db52b1f29515aeff5e17a", kill_on_drop: false }` [INFO] [stdout] f1c9ac9c9c31a71b70ba1b0565fc3eea16d4225bcb4db52b1f29515aeff5e17a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" 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[stderr] Checking main v0.1.0 (/opt/rustwide/workdir/main) [INFO] [stdout] warning: unused imports: `Duration` and `Instant` [INFO] [stdout] --> main/src/quicksort.rs:72:21 [INFO] [stdout] | [INFO] [stdout] 72 | use std::time::{Duration, Instant}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `extend::ext` [INFO] [stdout] --> main/src/quicksort.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | use extend::ext; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::prelude::*` [INFO] [stdout] --> main/src/quicksort.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | use super::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Duration` and `Instant` [INFO] [stdout] --> main/src/quicksort.rs:72:21 [INFO] [stdout] | [INFO] [stdout] 72 | use std::time::{Duration, Instant}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `extend::ext` [INFO] [stdout] --> main/src/quicksort.rs:74:9 [INFO] [stdout] | [INFO] [stdout] 74 | use extend::ext; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `super::prelude::*` [INFO] [stdout] --> main/src/quicksort.rs:76:9 [INFO] [stdout] | [INFO] [stdout] 76 | use super::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> main/src/quicksort.rs:79:13 [INFO] [stdout] | [INFO] [stdout] 79 | let v = vec![9, 3, -1, 0, 3, -56]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> main/src/quicksort.rs:79:13 [INFO] [stdout] | [INFO] [stdout] 79 | let v = vec![9, 3, -1, 0, 3, -56]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `b` is assigned to, but never used [INFO] [stdout] --> main/src/async_exp.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let mut b: &dyn Future; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_b` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> main/src/async_exp.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | for i in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `b` is never read [INFO] [stdout] --> main/src/async_exp.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | b = &async { 5 } [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0716]: temporary value dropped while borrowed [INFO] [stdout] --> main/src/async_exp.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | a.push(&async { [INFO] [stdout] | _____________^ [INFO] [stdout] 20 | | wait(4).await; [INFO] [stdout] 21 | | 5 [INFO] [stdout] 22 | | }); [INFO] [stdout] | | ^ - temporary value is freed at the end of this statement [INFO] [stdout] | |_____| [INFO] [stdout] | creates a temporary value which is freed while still in use [INFO] [stdout] 23 | a.push(&async { 6 }); [INFO] [stdout] | - borrow later used here [INFO] [stdout] | [INFO] [stdout] = note: consider using a `let` binding to create a longer lived value [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> main/src/async_exp.rs:57:13 [INFO] [stdout] | [INFO] [stdout] 57 | let a = 2; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `context` [INFO] [stdout] --> main/src/compose.rs:25:20 [INFO] [stdout] | [INFO] [stdout] 25 | fn build(self, context: ()) -> impl Compose { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `context` [INFO] [stdout] --> main/src/compose.rs:37:20 [INFO] [stdout] | [INFO] [stdout] 37 | fn build(self, context: ()) -> impl Compose { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `context` [INFO] [stdout] --> main/src/compose.rs:46:20 [INFO] [stdout] | [INFO] [stdout] 46 | fn build(self, context: ()) -> impl Compose { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> main/src/react.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 46 | panic!("Unreachable: called build on SingleChar"); [INFO] [stdout] | ------------------------------------------------- any code following this expression is unreachable [INFO] [stdout] 47 | Self { c: self.c } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `b` is assigned to, but never used [INFO] [stdout] --> main/src/async_exp.rs:24:13 [INFO] [stdout] | [INFO] [stdout] 24 | let mut b: &dyn Future; [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_b` instead [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> main/src/async_exp.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | for i in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `b` is never read [INFO] [stdout] --> main/src/async_exp.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | b = &async { 5 } [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0716]: temporary value dropped while borrowed [INFO] [stdout] --> main/src/async_exp.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | a.push(&async { [INFO] [stdout] | _____________^ [INFO] [stdout] 20 | | wait(4).await; [INFO] [stdout] 21 | | 5 [INFO] [stdout] 22 | | }); [INFO] [stdout] | | ^ - temporary value is freed at the end of this statement [INFO] [stdout] | |_____| [INFO] [stdout] | creates a temporary value which is freed while still in use [INFO] [stdout] 23 | a.push(&async { 6 }); [INFO] [stdout] | - borrow later used here [INFO] [stdout] | [INFO] [stdout] = note: consider using a `let` binding to create a longer lived value [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> main/src/async_exp.rs:57:13 [INFO] [stdout] | [INFO] [stdout] 57 | let a = 2; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `context` [INFO] [stdout] --> main/src/compose.rs:25:20 [INFO] [stdout] | [INFO] [stdout] 25 | fn build(self, context: ()) -> impl Compose { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `context` [INFO] [stdout] --> main/src/compose.rs:37:20 [INFO] [stdout] | [INFO] [stdout] 37 | fn build(self, context: ()) -> impl Compose { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `context` [INFO] [stdout] --> main/src/compose.rs:46:20 [INFO] [stdout] | [INFO] [stdout] 46 | fn build(self, context: ()) -> impl Compose { [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_context` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> main/src/react.rs:47:9 [INFO] [stdout] | [INFO] [stdout] 46 | panic!("Unreachable: called build on SingleChar"); [INFO] [stdout] | ------------------------------------------------- any code following this expression is unreachable [INFO] [stdout] 47 | Self { c: self.c } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `old_widget` [INFO] [stdout] --> main/src/compose.rs:11:28 [INFO] [stdout] | [INFO] [stdout] 11 | fn needsRebuild(&self, old_widget: &Self) -> bool { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_widget` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `old_widget` [INFO] [stdout] --> main/src/compose.rs:11:28 [INFO] [stdout] | [INFO] [stdout] 11 | fn needsRebuild(&self, old_widget: &Self) -> bool { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_widget` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> main/src/quicksort.rs:79:13 [INFO] [stdout] | [INFO] [stdout] 79 | let v = vec![9, 3, -1, 0, 3, -56]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> main/src/recipe.rs:349:13 [INFO] [stdout] | [INFO] [stdout] 349 | let b = [3.0, 2.18, 3.14, 9.11] [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> main/src/tree.rs:22:29 [INFO] [stdout] | [INFO] [stdout] 22 | fn insert(&'a mut self, item: T) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> main/src/quicksort.rs:79:13 [INFO] [stdout] | [INFO] [stdout] 79 | let v = vec![9, 3, -1, 0, 3, -56]; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> main/src/recipe.rs:349:13 [INFO] [stdout] | [INFO] [stdout] 349 | let b = [3.0, 2.18, 3.14, 9.11] [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `item` [INFO] [stdout] --> main/src/tree.rs:22:29 [INFO] [stdout] | [INFO] [stdout] 22 | fn insert(&'a mut self, item: T) { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_item` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> main/src/main.rs:383:9 [INFO] [stdout] | [INFO] [stdout] 383 | let a = mix![ [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `apple1` [INFO] [stdout] --> main/src/main.rs:424:9 [INFO] [stdout] | [INFO] [stdout] 424 | let apple1 = Apple { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_apple1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> main/src/main.rs:452:9 [INFO] [stdout] | [INFO] [stdout] 452 | let a = tokio::spawn(async { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> main/src/main.rs:451:16 [INFO] [stdout] | [INFO] [stdout] 451 | fn test14<'it>(a: impl IntoIterator) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `romania` [INFO] [stdout] --> main/src/main.rs:469:9 [INFO] [stdout] | [INFO] [stdout] 469 | let romania = HashMap::from([ [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_romania` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `map` [INFO] [stdout] --> main/src/main.rs:478:9 [INFO] [stdout] | [INFO] [stdout] 478 | let map = map! { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_map` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `map2` [INFO] [stdout] --> main/src/main.rs:483:13 [INFO] [stdout] | [INFO] [stdout] 483 | let mut map2 = mixedmap! { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_map2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> main/src/main.rs:489:9 [INFO] [stdout] | [INFO] [stdout] 489 | let s1 = *s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> main/src/main.rs:483:9 [INFO] [stdout] | [INFO] [stdout] 483 | let mut map2 = mixedmap! { [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: `a` [INFO] [stdout] --> main/src/main.rs:383:9 [INFO] [stdout] | [INFO] [stdout] 383 | let a = mix![ [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0716`. [INFO] [stdout] [INFO] [stdout] warning: unused variable: `apple1` [INFO] [stdout] --> main/src/main.rs:424:9 [INFO] [stdout] | [INFO] [stdout] 424 | let apple1 = Apple { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_apple1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> main/src/main.rs:452:9 [INFO] [stdout] | [INFO] [stdout] 452 | let a = tokio::spawn(async { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> main/src/main.rs:451:16 [INFO] [stdout] | [INFO] [stdout] 451 | fn test14<'it>(a: impl IntoIterator) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `romania` [INFO] [stdout] --> main/src/main.rs:469:9 [INFO] [stdout] | [INFO] [stdout] 469 | let romania = HashMap::from([ [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_romania` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `map` [INFO] [stdout] --> main/src/main.rs:478:9 [INFO] [stdout] | [INFO] [stdout] 478 | let map = map! { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_map` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `map2` [INFO] [stdout] --> main/src/main.rs:483:13 [INFO] [stdout] | [INFO] [stdout] 483 | let mut map2 = mixedmap! { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_map2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s1` [INFO] [stdout] --> main/src/main.rs:489:9 [INFO] [stdout] | [INFO] [stdout] 489 | let s1 = *s; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_s1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> main/src/main.rs:483:9 [INFO] [stdout] | [INFO] [stdout] 483 | let mut map2 = mixedmap! { [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] [stderr] error: could not compile `main` (bin "main" test) due to 1 previous error; 21 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] For more information about this error, try `rustc --explain E0716`. [INFO] [stdout] [INFO] [stderr] error: could not compile `main` (bin "main") due to 1 previous error; 21 warnings emitted [INFO] running `Command { std: "docker" "inspect" "062753a21b82ea5f8e7fc38d0c40322255ebdb1292d55160ee353227eb692a79", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "062753a21b82ea5f8e7fc38d0c40322255ebdb1292d55160ee353227eb692a79", kill_on_drop: false }` [INFO] [stdout] 062753a21b82ea5f8e7fc38d0c40322255ebdb1292d55160ee353227eb692a79