[INFO] fetching crate sync_2 1.0.4...
[INFO] checking sync_2-1.0.4 against 1.95.0 for pr-155915
[INFO] extracting crate sync_2 1.0.4 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate sync_2 1.0.4
[INFO] finished tweaking crates.io crate sync_2 1.0.4
[INFO] tweaked toml for crates.io crate sync_2 1.0.4 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sync_2 1.0.4 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[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] 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] 3f8a41034d3cd5b4743238995a9ab4f53b8e3a293acaf8b6962e20dc1d8ad441
[INFO] running `Command { std: "docker" "start" "-a" "3f8a41034d3cd5b4743238995a9ab4f53b8e3a293acaf8b6962e20dc1d8ad441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f8a41034d3cd5b4743238995a9ab4f53b8e3a293acaf8b6962e20dc1d8ad441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f8a41034d3cd5b4743238995a9ab4f53b8e3a293acaf8b6962e20dc1d8ad441", kill_on_drop: false }`
[INFO] [stdout] 3f8a41034d3cd5b4743238995a9ab4f53b8e3a293acaf8b6962e20dc1d8ad441
[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] b3b2083b7bda89198b34d5ec4b37d8270f74be110460e01bc0f1c61af65ac6fc
[INFO] running `Command { std: "docker" "start" "-a" "b3b2083b7bda89198b34d5ec4b37d8270f74be110460e01bc0f1c61af65ac6fc", kill_on_drop: false }`
[INFO] [stderr]     Checking sync_2 v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(negative_impls)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]  --> src/lib.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::sync::atomic::{spin_loop_hint as spin_loop, AtomicU8, AtomicUsize, Ordering::SeqCst};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]   --> src/lib.rs:93:36
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]    |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:387:36
[INFO] [stdout]     |
[INFO] [stdout] 387 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:429:36
[INFO] [stdout]     |
[INFO] [stdout] 429 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:802:26
[INFO] [stdout]     |
[INFO] [stdout] 802 | use core::sync::atomic::{spin_loop_hint as spin_loop, AtomicU8, AtomicUsize, Ordering::SeqCst};
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:898:36
[INFO] [stdout]     |
[INFO] [stdout] 898 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:948:36
[INFO] [stdout]     |
[INFO] [stdout] 948 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]     --> src/lib.rs:1399:36
[INFO] [stdout]      |
[INFO] [stdout] 1399 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]      |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(negative_impls)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]  --> src/lib.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::sync::atomic::{spin_loop_hint as spin_loop, AtomicU8, AtomicUsize, Ordering::SeqCst};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]   --> src/lib.rs:93:36
[INFO] [stdout]    |
[INFO] [stdout] 93 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]    |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:387:36
[INFO] [stdout]     |
[INFO] [stdout] 387 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:429:36
[INFO] [stdout]     |
[INFO] [stdout] 429 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:802:26
[INFO] [stdout]     |
[INFO] [stdout] 802 | use core::sync::atomic::{spin_loop_hint as spin_loop, AtomicU8, AtomicUsize, Ordering::SeqCst};
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:898:36
[INFO] [stdout]     |
[INFO] [stdout] 898 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]    --> src/lib.rs:948:36
[INFO] [stdout]     |
[INFO] [stdout] 948 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::sync::atomic::spin_loop_hint`: use hint::spin_loop instead
[INFO] [stdout]     --> src/lib.rs:1399:36
[INFO] [stdout]      |
[INFO] [stdout] 1399 |                 Err(WouldBlock) => spin_loop(),
[INFO] [stdout]      |                                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sync_2` (lib test) due to 1 previous error; 8 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `sync_2` (lib) due to 1 previous error; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b3b2083b7bda89198b34d5ec4b37d8270f74be110460e01bc0f1c61af65ac6fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3b2083b7bda89198b34d5ec4b37d8270f74be110460e01bc0f1c61af65ac6fc", kill_on_drop: false }`
[INFO] [stdout] b3b2083b7bda89198b34d5ec4b37d8270f74be110460e01bc0f1c61af65ac6fc
