[INFO] cloning repository https://github.com/MisterZurg/mipt_Rust_Programming [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MisterZurg/mipt_Rust_Programming" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMisterZurg%2Fmipt_Rust_Programming", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMisterZurg%2Fmipt_Rust_Programming'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2e23bf6600a6e35d36c90a08b640b63cebb5f103 [INFO] checking MisterZurg/mipt_Rust_Programming against try#802c9b5f98c16ec9d24cdfd517f740f1f3df0e29 for pr-137728 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMisterZurg%2Fmipt_Rust_Programming" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/MisterZurg/mipt_Rust_Programming on toolchain 802c9b5f98c16ec9d24cdfd517f740f1f3df0e29 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/MisterZurg/mipt_Rust_Programming [INFO] finished tweaking git repo https://github.com/MisterZurg/mipt_Rust_Programming [INFO] tweaked toml for git repo https://github.com/MisterZurg/mipt_Rust_Programming written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/MisterZurg/mipt_Rust_Programming 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" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] warning: /workspace/builds/worker-4-tc2/source/Cargo.toml: unused manifest key: edition [INFO] [stderr] warning: /workspace/builds/worker-4-tc2/source/Cargo.toml: unused manifest key: name [INFO] [stderr] warning: /workspace/builds/worker-4-tc2/source/Cargo.toml: unused manifest key: version [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 ntest v0.9.0 [INFO] [stderr] Downloaded ntest_timeout v0.9.0 [INFO] [stderr] Downloaded ntest_test_cases v0.9.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 60219ed22fd2677981e15c09d780fbddbc9640db5402624d97db8b79745456e8 [INFO] running `Command { std: "docker" "start" "-a" "60219ed22fd2677981e15c09d780fbddbc9640db5402624d97db8b79745456e8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "60219ed22fd2677981e15c09d780fbddbc9640db5402624d97db8b79745456e8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60219ed22fd2677981e15c09d780fbddbc9640db5402624d97db8b79745456e8", kill_on_drop: false }` [INFO] [stdout] 60219ed22fd2677981e15c09d780fbddbc9640db5402624d97db8b79745456e8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dc9d866d0b3705749f7b18808575eeefb0287fdf38f7d74f55efee580c0e68bf [INFO] running `Command { std: "docker" "start" "-a" "dc9d866d0b3705749f7b18808575eeefb0287fdf38f7d74f55efee580c0e68bf", kill_on_drop: false }` [INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"` [INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest [INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest [INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions [INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: edition [INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: name [INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: version [INFO] [stderr] Compiling libc v0.2.152 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Compiling proc-macro2 v1.0.78 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling equivalent v1.0.1 [INFO] [stderr] Compiling hashbrown v0.14.3 [INFO] [stderr] Compiling toml_datetime v0.6.5 [INFO] [stderr] Compiling winnow v0.5.35 [INFO] [stderr] Compiling once_cell v1.19.0 [INFO] [stderr] Checking add v0.1.0 (/opt/rustwide/workdir/problems/tutorial/add) [INFO] [stderr] Compiling indexmap v2.2.1 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Checking getrandom v0.2.12 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking combinations v0.1.0 (/opt/rustwide/workdir/problems/intro/combinations) [INFO] [stderr] Checking conway v0.1.0 (/opt/rustwide/workdir/problems/intro/conway) [INFO] [stdout] warning: unused variable: `rows` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:13:16 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn new(rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_rows` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cols` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:13:29 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn new(rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `grid` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:18:23 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn from_slice(grid: &[T], rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_grid` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rows` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:18:35 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn from_slice(grid: &[T], rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cols` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:18:48 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn from_slice(grid: &[T], rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:28:23 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn get(&self, row: usize, col: usize) -> &T { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `col` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:28:35 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn get(&self, row: usize, col: usize) -> &T { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_col` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:33:27 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn set(&mut self, value: T, row: usize, col: usize) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:33:37 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn set(&mut self, value: T, row: usize, col: usize) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `col` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:33:49 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn set(&mut self, value: T, row: usize, col: usize) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_col` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:38:30 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn neighbours(&self, row: usize, col: usize) -> Vec<(usize, usize)> { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `col` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:38:42 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn neighbours(&self, row: usize, col: usize) -> Vec<(usize, usize)> { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_col` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `grid` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:66:22 [INFO] [stdout] | [INFO] [stdout] 66 | pub fn from_grid(grid: Grid) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_grid` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rows` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:13:16 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn new(rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_rows` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cols` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:13:29 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn new(rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `grid` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:18:23 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn from_slice(grid: &[T], rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_grid` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rows` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:18:35 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn from_slice(grid: &[T], rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_rows` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cols` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:18:48 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn from_slice(grid: &[T], rows: usize, cols: usize) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cols` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:28:23 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn get(&self, row: usize, col: usize) -> &T { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `col` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:28:35 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn get(&self, row: usize, col: usize) -> &T { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_col` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `value` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:33:27 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn set(&mut self, value: T, row: usize, col: usize) { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_value` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:33:37 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn set(&mut self, value: T, row: usize, col: usize) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `col` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:33:49 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn set(&mut self, value: T, row: usize, col: usize) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_col` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `row` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:38:30 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn neighbours(&self, row: usize, col: usize) -> Vec<(usize, usize)> { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_row` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `col` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:38:42 [INFO] [stdout] | [INFO] [stdout] 38 | pub fn neighbours(&self, row: usize, col: usize) -> Vec<(usize, usize)> { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_col` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `grid` [INFO] [stdout] --> problems/intro/conway/src/lib.rs:66:22 [INFO] [stdout] | [INFO] [stdout] 66 | pub fn from_grid(grid: Grid) -> Self { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_grid` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling toml_edit v0.19.15 [INFO] [stderr] Compiling proc-macro-crate v1.3.1 [INFO] [stderr] Compiling ntest_test_cases v0.9.0 [INFO] [stderr] Compiling ntest_timeout v0.9.0 [INFO] [stderr] Checking ntest v0.9.0 [INFO] [stderr] Checking min-queue v0.1.0 (/opt/rustwide/workdir/problems/intro/min-queue) [INFO] [stdout] warning: unused import: `std::collections::VecDeque` [INFO] [stdout] --> problems/intro/min-queue/src/lib.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::collections::VecDeque; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::VecDeque` [INFO] [stdout] --> problems/intro/min-queue/src/lib.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::collections::VecDeque; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0392]: type parameter `T` is never used [INFO] [stdout] --> problems/intro/min-queue/src/lib.rs:6:21 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct MinQueue { [INFO] [stdout] | ^ unused type parameter [INFO] [stdout] | [INFO] [stdout] = help: consider removing `T`, referring to it in a field, or using a marker such as `PhantomData` [INFO] [stdout] = help: if you intended `T` to be a const parameter, use `const T: /* Type */` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> problems/intro/min-queue/src/lib.rs:5:10 [INFO] [stdout] | [INFO] [stdout] 5 | #[derive(Default)] [INFO] [stdout] | ^ cannot infer type [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> problems/intro/min-queue/src/lib.rs:16:28 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn push(&mut self, val: T) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0392]: type parameter `T` is never used [INFO] [stdout] --> problems/intro/min-queue/src/lib.rs:6:21 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct MinQueue { [INFO] [stdout] | ^ unused type parameter [INFO] [stdout] | [INFO] [stdout] = help: consider removing `T`, referring to it in a field, or using a marker such as `PhantomData` [INFO] [stdout] = help: if you intended `T` to be a const parameter, use `const T: /* Type */` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0282, E0392. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> problems/intro/min-queue/src/lib.rs:5:10 [INFO] [stdout] | [INFO] [stdout] 5 | #[derive(Default)] [INFO] [stdout] | ^ cannot infer type [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Default` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `val` [INFO] [stdout] --> problems/intro/min-queue/src/lib.rs:16:28 [INFO] [stdout] | [INFO] [stdout] 16 | pub fn push(&mut self, val: T) { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_val` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0282, E0392. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `min-queue` (lib) due to 2 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `min-queue` (lib test) due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "dc9d866d0b3705749f7b18808575eeefb0287fdf38f7d74f55efee580c0e68bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dc9d866d0b3705749f7b18808575eeefb0287fdf38f7d74f55efee580c0e68bf", kill_on_drop: false }` [INFO] [stdout] dc9d866d0b3705749f7b18808575eeefb0287fdf38f7d74f55efee580c0e68bf