[INFO] cloning repository https://github.com/Harshit933/rust-spin_lock [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Harshit933/rust-spin_lock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarshit933%2Frust-spin_lock", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarshit933%2Frust-spin_lock'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ed14705f9f07c44e80166b25048632a05411537d [INFO] testing Harshit933/rust-spin_lock against try#c066bf6804adc55193b71afdff6a56922f4a8689+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_in_2025-retry-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarshit933%2Frust-spin_lock" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Harshit933/rust-spin_lock [INFO] finished tweaking git repo https://github.com/Harshit933/rust-spin_lock [INFO] tweaked toml for git repo https://github.com/Harshit933/rust-spin_lock written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Harshit933/rust-spin_lock on toolchain c066bf6804adc55193b71afdff6a56922f4a8689 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c066bf6804adc55193b71afdff6a56922f4a8689" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Harshit933/rust-spin_lock 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" "+c066bf6804adc55193b71afdff6a56922f4a8689" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] testing Harshit933/rust-spin_lock against try#c066bf6804adc55193b71afdff6a56922f4a8689+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_in_2025-retry-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarshit933%2Frust-spin_lock" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Harshit933/rust-spin_lock [INFO] finished tweaking git repo https://github.com/Harshit933/rust-spin_lock [INFO] tweaked toml for git repo https://github.com/Harshit933/rust-spin_lock written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Harshit933/rust-spin_lock on toolchain c066bf6804adc55193b71afdff6a56922f4a8689 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c066bf6804adc55193b71afdff6a56922f4a8689" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Harshit933/rust-spin_lock 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" "+c066bf6804adc55193b71afdff6a56922f4a8689" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c066bf6804adc55193b71afdff6a56922f4a8689" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 05784ab22c67abb7453bc6b77feaca7fa40edc4d0c89cbe061dc4180c443db3d [INFO] running `Command { std: "docker" "start" "-a" "05784ab22c67abb7453bc6b77feaca7fa40edc4d0c89cbe061dc4180c443db3d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "05784ab22c67abb7453bc6b77feaca7fa40edc4d0c89cbe061dc4180c443db3d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "05784ab22c67abb7453bc6b77feaca7fa40edc4d0c89cbe061dc4180c443db3d", kill_on_drop: false }` [INFO] [stdout] 05784ab22c67abb7453bc6b77feaca7fa40edc4d0c89cbe061dc4180c443db3d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c066bf6804adc55193b71afdff6a56922f4a8689" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] a974e75a6fefc65620adb2d079166577f595c24a9a3a7b8ebbb6b58c6b9209a9 [INFO] running `Command { std: "docker" "start" "-a" "a974e75a6fefc65620adb2d079166577f595c24a9a3a7b8ebbb6b58c6b9209a9", kill_on_drop: false }` [INFO] [stderr] Compiling spin-lock v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `cell::UnsafeCell` and `env::var` [INFO] [stdout] --> src/guard.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{cell::UnsafeCell, env::var, ops::{Deref, DerefMut}}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> src/guard.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::spin_lock::SpinLock` [INFO] [stdout] --> src/guard.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | use crate::spin_lock::SpinLock; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `self`, `spawn`, and `sync::atomic::Ordering::Relaxed` [INFO] [stdout] --> src/atomic_spin_lock.rs:36:15 [INFO] [stdout] | [INFO] [stdout] 36 | use std::{sync::atomic::Ordering::Relaxed, thread::{self, spawn}}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::atomic_spin_lock::SpinLockAtomic` [INFO] [stdout] --> src/atomic_spin_lock.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | use crate::atomic_spin_lock::SpinLockAtomic; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SpinLock` is never constructed [INFO] [stdout] --> src/spin_lock.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct SpinLock { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `lock`, and `unlock` are never used [INFO] [stdout] --> src/spin_lock.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 15 | impl SpinLock { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 16 | pub fn new(value: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | pub fn lock<'a>(&'a self) -> Guard { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 37 | pub unsafe fn unlock(&self) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Guard` is never constructed [INFO] [stdout] --> src/guard.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Guard<'a, T> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SpinLockAtomic` is never constructed [INFO] [stdout] --> src/atomic_spin_lock.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct SpinLockAtomic { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SpinLockAtomic` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `unlock`, and `lock` are never used [INFO] [stdout] --> src/atomic_spin_lock.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 18 | impl SpinLockAtomic { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 19 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | pub fn unlock(&self) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 27 | pub fn lock(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/spin_lock.rs:23:22 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn lock<'a>(&'a self) -> Guard { [INFO] [stdout] | ^^ -------- the lifetime gets resolved as `'a` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 23 | pub fn lock<'a>(&'a self) -> Guard<'a, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] running `Command { std: "docker" "inspect" "a974e75a6fefc65620adb2d079166577f595c24a9a3a7b8ebbb6b58c6b9209a9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a974e75a6fefc65620adb2d079166577f595c24a9a3a7b8ebbb6b58c6b9209a9", kill_on_drop: false }` [INFO] [stdout] a974e75a6fefc65620adb2d079166577f595c24a9a3a7b8ebbb6b58c6b9209a9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c066bf6804adc55193b71afdff6a56922f4a8689" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] 26a96e77c1bda434b0778a53178975ad26772801ca06159773f7a23b8b4b64f3 [INFO] running `Command { std: "docker" "start" "-a" "26a96e77c1bda434b0778a53178975ad26772801ca06159773f7a23b8b4b64f3", kill_on_drop: false }` [INFO] [stdout] warning: unused imports: `cell::UnsafeCell` and `env::var` [INFO] [stdout] --> src/guard.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{cell::UnsafeCell, env::var, ops::{Deref, DerefMut}}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> src/guard.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling spin-lock v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `crate::spin_lock::SpinLock` [INFO] [stdout] --> src/guard.rs:38:9 [INFO] [stdout] | [INFO] [stdout] 38 | use crate::spin_lock::SpinLock; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `self`, `spawn`, and `sync::atomic::Ordering::Relaxed` [INFO] [stdout] --> src/atomic_spin_lock.rs:36:15 [INFO] [stdout] | [INFO] [stdout] 36 | use std::{sync::atomic::Ordering::Relaxed, thread::{self, spawn}}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `crate::atomic_spin_lock::SpinLockAtomic` [INFO] [stdout] --> src/atomic_spin_lock.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | use crate::atomic_spin_lock::SpinLockAtomic; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SpinLock` is never constructed [INFO] [stdout] --> src/spin_lock.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct SpinLock { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `lock`, and `unlock` are never used [INFO] [stdout] --> src/spin_lock.rs:16:12 [INFO] [stdout] | [INFO] [stdout] 15 | impl SpinLock { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 16 | pub fn new(value: T) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | pub fn lock<'a>(&'a self) -> Guard { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 37 | pub unsafe fn unlock(&self) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Guard` is never constructed [INFO] [stdout] --> src/guard.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Guard<'a, T> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SpinLockAtomic` is never constructed [INFO] [stdout] --> src/atomic_spin_lock.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct SpinLockAtomic { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SpinLockAtomic` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `new`, `unlock`, and `lock` are never used [INFO] [stdout] --> src/atomic_spin_lock.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 18 | impl SpinLockAtomic { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 19 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | pub fn unlock(&self) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 27 | pub fn lock(&self) { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/spin_lock.rs:23:22 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn lock<'a>(&'a self) -> Guard { [INFO] [stdout] | ^^ -------- the lifetime gets resolved as `'a` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 23 | pub fn lock<'a>(&'a self) -> Guard<'a, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `cell::UnsafeCell` and `env::var` [INFO] [stdout] --> src/guard.rs:1:11 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{cell::UnsafeCell, env::var, ops::{Deref, DerefMut}}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `spawn` and `sync::atomic::Ordering::Relaxed` [INFO] [stdout] --> src/atomic_spin_lock.rs:36:15 [INFO] [stdout] | [INFO] [stdout] 36 | use std::{sync::atomic::Ordering::Relaxed, thread::{self, spawn}}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `unlock` is never used [INFO] [stdout] --> src/spin_lock.rs:37:19 [INFO] [stdout] | [INFO] [stdout] 15 | impl SpinLock { [INFO] [stdout] | ------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 37 | pub unsafe fn unlock(&self) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/spin_lock.rs:23:22 [INFO] [stdout] | [INFO] [stdout] 23 | pub fn lock<'a>(&'a self) -> Guard { [INFO] [stdout] | ^^ -------- the lifetime gets resolved as `'a` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 23 | pub fn lock<'a>(&'a self) -> Guard<'a, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.45s [INFO] running `Command { std: "docker" "inspect" "26a96e77c1bda434b0778a53178975ad26772801ca06159773f7a23b8b4b64f3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "26a96e77c1bda434b0778a53178975ad26772801ca06159773f7a23b8b4b64f3", kill_on_drop: false }` [INFO] [stdout] 26a96e77c1bda434b0778a53178975ad26772801ca06159773f7a23b8b4b64f3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+c066bf6804adc55193b71afdff6a56922f4a8689" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] 394dc19f0bf474521af3cc11212c6a69c849cdf29edeb15f736c29a05d2ff857 [INFO] running `Command { std: "docker" "start" "-a" "394dc19f0bf474521af3cc11212c6a69c849cdf29edeb15f736c29a05d2ff857", kill_on_drop: false }` [INFO] [stderr] warning: unused imports: `cell::UnsafeCell` and `env::var` [INFO] [stderr] --> src/guard.rs:1:11 [INFO] [stderr] | [INFO] [stderr] 1 | use std::{cell::UnsafeCell, env::var, ops::{Deref, DerefMut}}; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/guard.rs:36:9 [INFO] [stderr] | [INFO] [stderr] 36 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::spin_lock::SpinLock` [INFO] [stderr] --> src/guard.rs:38:9 [INFO] [stderr] | [INFO] [stderr] 38 | use crate::spin_lock::SpinLock; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `self`, `spawn`, and `sync::atomic::Ordering::Relaxed` [INFO] [stderr] --> src/atomic_spin_lock.rs:36:15 [INFO] [stderr] | [INFO] [stderr] 36 | use std::{sync::atomic::Ordering::Relaxed, thread::{self, spawn}}; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::atomic_spin_lock::SpinLockAtomic` [INFO] [stderr] --> src/atomic_spin_lock.rs:37:9 [INFO] [stderr] | [INFO] [stderr] 37 | use crate::atomic_spin_lock::SpinLockAtomic; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `SpinLock` is never constructed [INFO] [stderr] --> src/spin_lock.rs:5:12 [INFO] [stderr] | [INFO] [stderr] 5 | pub struct SpinLock { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated items `new`, `lock`, and `unlock` are never used [INFO] [stderr] --> src/spin_lock.rs:16:12 [INFO] [stderr] | [INFO] [stderr] 15 | impl SpinLock { [INFO] [stderr] | ------------------- associated items in this implementation [INFO] [stderr] 16 | pub fn new(value: T) -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] ... [INFO] [stderr] 23 | pub fn lock<'a>(&'a self) -> Guard { [INFO] [stderr] | ^^^^ [INFO] [stderr] ... [INFO] [stderr] 37 | pub unsafe fn unlock(&self) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `Guard` is never constructed [INFO] [stderr] --> src/guard.rs:7:12 [INFO] [stderr] | [INFO] [stderr] 7 | pub struct Guard<'a, T> { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct `SpinLockAtomic` is never constructed [INFO] [stderr] --> src/atomic_spin_lock.rs:12:12 [INFO] [stderr] | [INFO] [stderr] 12 | pub struct SpinLockAtomic { [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `SpinLockAtomic` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: associated items `new`, `unlock`, and `lock` are never used [INFO] [stderr] --> src/atomic_spin_lock.rs:19:12 [INFO] [stderr] | [INFO] [stderr] 18 | impl SpinLockAtomic { [INFO] [stderr] | ------------------- associated items in this implementation [INFO] [stderr] 19 | pub fn new() -> Self { [INFO] [stderr] | ^^^ [INFO] [stderr] ... [INFO] [stderr] 23 | pub fn unlock(&self) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 27 | pub fn lock(&self) { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stderr] --> src/spin_lock.rs:23:22 [INFO] [stderr] | [INFO] [stderr] 23 | pub fn lock<'a>(&'a self) -> Guard { [INFO] [stderr] | ^^ -------- the lifetime gets resolved as `'a` [INFO] [stderr] | | [INFO] [stderr] | this lifetime flows to the output [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: one option is to consistently use `'a` [INFO] [stderr] | [INFO] [stderr] 23 | pub fn lock<'a>(&'a self) -> Guard<'a, T> { [INFO] [stderr] | +++ [INFO] [stderr] [INFO] [stderr] warning: `spin-lock` (lib) generated 11 warnings (run `cargo fix --lib -p spin-lock` to apply 6 suggestions) [INFO] [stderr] warning: unused imports: `spawn` and `sync::atomic::Ordering::Relaxed` [INFO] [stderr] --> src/atomic_spin_lock.rs:36:15 [INFO] [stderr] | [INFO] [stderr] 36 | use std::{sync::atomic::Ordering::Relaxed, thread::{self, spawn}}; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method `unlock` is never used [INFO] [stderr] --> src/spin_lock.rs:37:19 [INFO] [stderr] | [INFO] [stderr] 15 | impl SpinLock { [INFO] [stderr] | ------------------- method in this implementation [INFO] [stderr] ... [INFO] [stderr] 37 | pub unsafe fn unlock(&self) { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `spin-lock` (lib test) generated 4 warnings (2 duplicates) (run `cargo fix --lib -p spin-lock --tests` to apply 1 suggestion) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/spin_lock-de90e995b4bdd4c0) [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test atomic_spin_lock::tests::try_simple_spin_lock ... ok [INFO] [stdout] test guard::tests::test_simple_spin_lock ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "394dc19f0bf474521af3cc11212c6a69c849cdf29edeb15f736c29a05d2ff857", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "394dc19f0bf474521af3cc11212c6a69c849cdf29edeb15f736c29a05d2ff857", kill_on_drop: false }` [INFO] [stdout] 394dc19f0bf474521af3cc11212c6a69c849cdf29edeb15f736c29a05d2ff857