[INFO] cloning repository https://github.com/Lucian-4a25/rust-atomic-locks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lucian-4a25/rust-atomic-locks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucian-4a25%2Frust-atomic-locks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucian-4a25%2Frust-atomic-locks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b832d9f5f79e500a2a5669fe6c29b3cb659a499
[INFO] checking Lucian-4a25/rust-atomic-locks against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucian-4a25%2Frust-atomic-locks" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Lucian-4a25/rust-atomic-locks
[INFO] finished tweaking git repo https://github.com/Lucian-4a25/rust-atomic-locks
[INFO] tweaked toml for git repo https://github.com/Lucian-4a25/rust-atomic-locks written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Lucian-4a25/rust-atomic-locks on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Lucian-4a25/rust-atomic-locks 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atomic-wait v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e2250805176cdd0f5d5d2e1055763e3b523cb6212f78a1dabc29e15045a98cc
[INFO] running `Command { std: "docker" "start" "-a" "2e2250805176cdd0f5d5d2e1055763e3b523cb6212f78a1dabc29e15045a98cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e2250805176cdd0f5d5d2e1055763e3b523cb6212f78a1dabc29e15045a98cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e2250805176cdd0f5d5d2e1055763e3b523cb6212f78a1dabc29e15045a98cc", kill_on_drop: false }`
[INFO] [stdout] 2e2250805176cdd0f5d5d2e1055763e3b523cb6212f78a1dabc29e15045a98cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84fe8493209b148795815e3904df477b54fb461508e2b34e5ced486dc01b534a
[INFO] running `Command { std: "docker" "start" "-a" "84fe8493209b148795815e3904df477b54fb461508e2b34e5ced486dc01b534a", kill_on_drop: false }`
[INFO] [stderr]     Checking atomic-wait v1.1.0
[INFO] [stderr]     Checking rust-atomic-locks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arc_into_inner)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicU16`
[INFO] [stdout]  --> src/main.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 |     sync::atomic::{AtomicU16, AtomicU64, AtomicUsize, Ordering},
[INFO] [stdout]   |                    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wake_all`
[INFO] [stdout]  --> src/mutex/mod.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use atomic_wait::{wait, wake_all, wake_one};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicU16`
[INFO] [stdout]  --> src/mutex/mod.rs:6:31
[INFO] [stdout]   |
[INFO] [stdout] 6 |     sync::atomic::{AtomicI16, AtomicU16, AtomicU32, Ordering},
[INFO] [stdout]   |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/ordering/fences.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     time::Duration,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicUsize` and `fmt::Write`
[INFO] [stdout]  --> src/rwlock/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fmt::Write,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 5 |     ops::{Deref, DerefMut},
[INFO] [stdout] 6 |     sync::atomic::{AtomicU32, AtomicUsize, Ordering},
[INFO] [stdout]   |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread`
[INFO] [stdout]  --> src/send_sync_trait.rs:1:52
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::Cell, marker::PhantomData, rc::Rc, thread};
[INFO] [stdout]   |                                                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `arc_into_inner` has been stable since 1.70.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arc_into_inner)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arc_into_inner)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicU16`, `AtomicU64`, `AtomicUsize`, `Ordering`, `hint::black_box`, and `time::Instant`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     hint::black_box,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 4 |     sync::atomic::{AtomicU16, AtomicU64, AtomicUsize, Ordering},
[INFO] [stdout]   |                    ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 5 |     thread,
[INFO] [stdout] 6 |     time::Instant,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread`
[INFO] [stdout]  --> src/arc/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     thread,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/cond_var/mod.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::mutex::{Mutex, MutexGuard};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> src/cond_var/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wake_all`
[INFO] [stdout]  --> src/mutex/mod.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use atomic_wait::{wait, wake_all, wake_one};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicI16`, `AtomicU16`, `thread`, and `time::Instant`
[INFO] [stdout]  --> src/mutex/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 |     sync::atomic::{AtomicI16, AtomicU16, AtomicU32, Ordering},
[INFO] [stdout]   |                    ^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 7 |     thread,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     time::Instant,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/ordering/fences.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     time::Duration,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicUsize` and `fmt::Write`
[INFO] [stdout]  --> src/rwlock/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fmt::Write,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 5 |     ops::{Deref, DerefMut},
[INFO] [stdout] 6 |     sync::atomic::{AtomicU32, AtomicUsize, Ordering},
[INFO] [stdout]   |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread`
[INFO] [stdout]  --> src/send_sync_trait.rs:1:52
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::Cell, marker::PhantomData, rc::Rc, thread};
[INFO] [stdout]   |                                                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `arc_into_inner` has been stable since 1.70.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(arc_into_inner)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/send_sync_trait.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let a = Rc::new([1]);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-atomic-locks` (bin "rust-atomic-locks") due to 1 previous error; 11 warnings emitted
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/send_sync_trait.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let a = Rc::new([1]);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-atomic-locks` (bin "rust-atomic-locks" test) due to 1 previous error; 8 warnings emitted
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "84fe8493209b148795815e3904df477b54fb461508e2b34e5ced486dc01b534a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84fe8493209b148795815e3904df477b54fb461508e2b34e5ced486dc01b534a", kill_on_drop: false }`
[INFO] [stdout] 84fe8493209b148795815e3904df477b54fb461508e2b34e5ced486dc01b534a
