[INFO] cloning repository https://github.com/Iorveth/ParallelAlgorithms [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Iorveth/ParallelAlgorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIorveth%2FParallelAlgorithms", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIorveth%2FParallelAlgorithms'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 56a6c4cf10f9f55a7fd2d3703c023dcf77900710 [INFO] checking Iorveth/ParallelAlgorithms/56a6c4cf10f9f55a7fd2d3703c023dcf77900710 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIorveth%2FParallelAlgorithms" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Iorveth/ParallelAlgorithms on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Iorveth/ParallelAlgorithms [INFO] finished tweaking git repo https://github.com/Iorveth/ParallelAlgorithms [INFO] tweaked toml for git repo https://github.com/Iorveth/ParallelAlgorithms written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Iorveth/ParallelAlgorithms 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] cedbd19fc0297f774a06c6f1d5ffb647cc55e95c13e43a282e12f2d6dd2cc5e4 [INFO] running `Command { std: "docker" "start" "-a" "cedbd19fc0297f774a06c6f1d5ffb647cc55e95c13e43a282e12f2d6dd2cc5e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "cedbd19fc0297f774a06c6f1d5ffb647cc55e95c13e43a282e12f2d6dd2cc5e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cedbd19fc0297f774a06c6f1d5ffb647cc55e95c13e43a282e12f2d6dd2cc5e4", kill_on_drop: false }` [INFO] [stdout] cedbd19fc0297f774a06c6f1d5ffb647cc55e95c13e43a282e12f2d6dd2cc5e4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dc1c7c624c8b38614e4e6ef8b7cc21f4a35f50d5fe920991eb12440177443dc9 [INFO] running `Command { std: "docker" "start" "-a" "dc1c7c624c8b38614e4e6ef8b7cc21f4a35f50d5fe920991eb12440177443dc9", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Checking ParallelAlgorithms v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `eating_philosophers::eating_philosophers_run` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use eating_philosophers::eating_philosophers_run; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `readers_writers::readers_writers_run` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use readers_writers::readers_writers_run; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `readers_writers::Priority` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use readers_writers::Priority; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `eating_philosophers::eating_philosophers_run` [INFO] [stdout] --> src/main.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use eating_philosophers::eating_philosophers_run; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `readers_writers::readers_writers_run` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use readers_writers::readers_writers_run; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `readers_writers::Priority` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use readers_writers::Priority; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/eating_philosophers.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let mut forks: [AtomicBool; 5] = [ [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: variable does not need to be mutable [INFO] [stdout] --> src/eating_philosophers.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | let mut handles: Vec<_> = philosophers [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/readers_writers.rs:63:13 [INFO] [stdout] | [INFO] [stdout] 63 | _ => unreachable!(), [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/readers_writers.rs:63:13 [INFO] [stdout] | [INFO] [stdout] 48 | Priority::Readers => { [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 57 | Priority::Writers | Priority::Equal => { [INFO] [stdout] | ----------------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 63 | _ => unreachable!(), [INFO] [stdout] | ^ collectively making this unreachable [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/readers_writers.rs:78:13 [INFO] [stdout] | [INFO] [stdout] 78 | _ => unreachable!(), [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/readers_writers.rs:78:13 [INFO] [stdout] | [INFO] [stdout] 69 | Priority::Readers | Priority::Equal => { [INFO] [stdout] | ----------------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 75 | Priority::Writers => { [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 78 | _ => unreachable!(), [INFO] [stdout] | ^ collectively making this unreachable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/readers_writers.rs:94:13 [INFO] [stdout] | [INFO] [stdout] 94 | _ => unreachable!(), [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/readers_writers.rs:94:13 [INFO] [stdout] | [INFO] [stdout] 86 | Priority::Readers | Priority::Equal => { [INFO] [stdout] | ----------------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 89 | Priority::Writers => { [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 94 | _ => unreachable!(), [INFO] [stdout] | ^ collectively making this unreachable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/readers_writers.rs:80:13 [INFO] [stdout] | [INFO] [stdout] 80 | let mut write = self.write_lock.write().unwrap(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/readers_writers.rs:99:9 [INFO] [stdout] | [INFO] [stdout] 99 | let mut readers_writers = ReadersWriters::new(readers_count, writers_count, priority); [INFO] [stdout] | ----^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/sleeping_dresser.rs:35:17 [INFO] [stdout] | [INFO] [stdout] 35 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Philosopher` is never constructed [INFO] [stdout] --> src/eating_philosophers.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Philosopher { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/eating_philosophers.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | let mut forks: [AtomicBool; 5] = [ [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: associated items `new` and `eat` are never used [INFO] [stdout] --> src/eating_philosophers.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 13 | impl Philosopher { [INFO] [stdout] | ---------------- associated items in this implementation [INFO] [stdout] 14 | fn new(name: String, left_hand: u8, right_hand: u8) -> Philosopher { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 22 | fn eat(&self, forks: &[AtomicBool; 5]) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `init` is never used [INFO] [stdout] --> src/eating_philosophers.rs:38:4 [INFO] [stdout] | [INFO] [stdout] 38 | fn init() -> (Arc<[AtomicBool; 5]>, Vec) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eating_philosophers_run` is never used [INFO] [stdout] --> src/eating_philosophers.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn eating_philosophers_run() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Priority` is never used [INFO] [stdout] --> src/readers_writers.rs:7:10 [INFO] [stdout] | [INFO] [stdout] 7 | pub enum Priority { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ReadersWriters` is never constructed [INFO] [stdout] --> src/readers_writers.rs:13:12 [INFO] [stdout] | [INFO] [stdout] 13 | pub struct ReadersWriters { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `get_readers_count`, `get_writers_count`, `read`, and `write` are never used [INFO] [stdout] --> src/readers_writers.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 21 | impl ReadersWriters { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 22 | fn new(readers_count: usize, writers_count: usize, priority: Priority) -> Arc { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 32 | fn get_readers_count(&self) -> &AtomicUsize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 36 | fn get_writers_count(&self) -> &AtomicUsize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 40 | fn read(&self, i: usize) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 67 | fn write(&self, i: usize) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `readers_writers_run` is never used [INFO] [stdout] --> src/readers_writers.rs:98:8 [INFO] [stdout] | [INFO] [stdout] 98 | pub fn readers_writers_run(readers_count: usize, writers_count: usize, priority: Priority) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/eating_philosophers.rs:61:9 [INFO] [stdout] | [INFO] [stdout] 61 | let mut handles: Vec<_> = philosophers [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/eating_philosophers.rs:66:19 [INFO] [stdout] | [INFO] [stdout] 64 | let forks_for_child = forks.clone(); [INFO] [stdout] | --------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 65 | [INFO] [stdout] 66 | spawn(move || { [INFO] [stdout] | ___________________^ [INFO] [stdout] 67 | | p.eat(&forks_for_child); [INFO] [stdout] 68 | | }) [INFO] [stdout] | |_____________^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/readers_writers.rs:63:13 [INFO] [stdout] | [INFO] [stdout] 63 | _ => unreachable!(), [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/readers_writers.rs:63:13 [INFO] [stdout] | [INFO] [stdout] 48 | Priority::Readers => { [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 57 | Priority::Writers | Priority::Equal => { [INFO] [stdout] | ----------------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 63 | _ => unreachable!(), [INFO] [stdout] | ^ collectively making this unreachable [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 19 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/readers_writers.rs:78:13 [INFO] [stdout] | [INFO] [stdout] 78 | _ => unreachable!(), [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/readers_writers.rs:78:13 [INFO] [stdout] | [INFO] [stdout] 69 | Priority::Readers | Priority::Equal => { [INFO] [stdout] | ----------------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 75 | Priority::Writers => { [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 78 | _ => unreachable!(), [INFO] [stdout] | ^ collectively making this unreachable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/readers_writers.rs:94:13 [INFO] [stdout] | [INFO] [stdout] 94 | _ => unreachable!(), [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/readers_writers.rs:94:13 [INFO] [stdout] | [INFO] [stdout] 86 | Priority::Readers | Priority::Equal => { [INFO] [stdout] | ----------------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 89 | Priority::Writers => { [INFO] [stdout] | ----------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 94 | _ => unreachable!(), [INFO] [stdout] | ^ collectively making this unreachable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/readers_writers.rs:80:13 [INFO] [stdout] | [INFO] [stdout] 80 | let mut write = self.write_lock.write().unwrap(); [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `ParallelAlgorithms` (bin "ParallelAlgorithms" test) due to 2 previous errors; 19 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/readers_writers.rs:99:9 [INFO] [stdout] | [INFO] [stdout] 99 | let mut readers_writers = ReadersWriters::new(readers_count, writers_count, priority); [INFO] [stdout] | ----^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `e` [INFO] [stdout] --> src/sleeping_dresser.rs:35:17 [INFO] [stdout] | [INFO] [stdout] 35 | Err(e) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_e` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Philosopher` is never constructed [INFO] [stdout] --> src/eating_philosophers.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Philosopher { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new` and `eat` are never used [INFO] [stdout] --> src/eating_philosophers.rs:14:8 [INFO] [stdout] | [INFO] [stdout] 13 | impl Philosopher { [INFO] [stdout] | ---------------- associated items in this implementation [INFO] [stdout] 14 | fn new(name: String, left_hand: u8, right_hand: u8) -> Philosopher { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 22 | fn eat(&self, forks: &[AtomicBool; 5]) { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `init` is never used [INFO] [stdout] --> src/eating_philosophers.rs:38:4 [INFO] [stdout] | [INFO] [stdout] 38 | fn init() -> (Arc<[AtomicBool; 5]>, Vec) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `eating_philosophers_run` is never used [INFO] [stdout] --> src/eating_philosophers.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn eating_philosophers_run() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `Priority` is never used [INFO] [stdout] --> src/readers_writers.rs:7:10 [INFO] [stdout] | [INFO] [stdout] 7 | pub enum Priority { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `ReadersWriters` is never constructed [INFO] [stdout] --> src/readers_writers.rs:13:12 [INFO] [stdout] | [INFO] [stdout] 13 | pub struct ReadersWriters { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `get_readers_count`, `get_writers_count`, `read`, and `write` are never used [INFO] [stdout] --> src/readers_writers.rs:22:8 [INFO] [stdout] | [INFO] [stdout] 21 | impl ReadersWriters { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 22 | fn new(readers_count: usize, writers_count: usize, priority: Priority) -> Arc { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 32 | fn get_readers_count(&self) -> &AtomicUsize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 36 | fn get_writers_count(&self) -> &AtomicUsize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 40 | fn read(&self, i: usize) { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 67 | fn write(&self, i: usize) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `readers_writers_run` is never used [INFO] [stdout] --> src/readers_writers.rs:98:8 [INFO] [stdout] | [INFO] [stdout] 98 | pub fn readers_writers_run(readers_count: usize, writers_count: usize, priority: Priority) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/eating_philosophers.rs:66:19 [INFO] [stdout] | [INFO] [stdout] 64 | let forks_for_child = forks.clone(); [INFO] [stdout] | --------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 65 | [INFO] [stdout] 66 | spawn(move || { [INFO] [stdout] | ___________________^ [INFO] [stdout] 67 | | p.eat(&forks_for_child); [INFO] [stdout] 68 | | }) [INFO] [stdout] | |_____________^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 19 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `ParallelAlgorithms` (bin "ParallelAlgorithms") due to 2 previous errors; 19 warnings emitted [INFO] running `Command { std: "docker" "inspect" "dc1c7c624c8b38614e4e6ef8b7cc21f4a35f50d5fe920991eb12440177443dc9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dc1c7c624c8b38614e4e6ef8b7cc21f4a35f50d5fe920991eb12440177443dc9", kill_on_drop: false }` [INFO] [stdout] dc1c7c624c8b38614e4e6ef8b7cc21f4a35f50d5fe920991eb12440177443dc9