[INFO] crate lockless 0.2.0 is already in cache
[INFO] building lockless-0.2.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate lockless 0.2.0 into work/builds/worker-0/source
[INFO] validating manifest of crates.io crate lockless 0.2.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lockless 0.2.0
[INFO] finished tweaking crates.io crate lockless 0.2.0
[INFO] tweaked toml for crates.io crate lockless 0.2.0 written to work/builds/worker-0/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 4bebe0acfdddad5c4de92a36cf0890e963783803202aad11169174bf24502110
[INFO] running `"docker" "start" "-a" "4bebe0acfdddad5c4de92a36cf0890e963783803202aad11169174bf24502110"`
[INFO] [stderr]    Compiling owning_ref v0.2.4
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling parking_lot v0.3.8
[INFO] [stderr]    Compiling lockless v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::task::park': renamed to `current`
[INFO] [stderr]    --> src/sync/mpsc_queue.rs:143:45
[INFO] [stderr]     |
[INFO] [stderr] 143 |         self.tasks.swap(id.into(), id, Some(task::park())).is_some()
[INFO] [stderr]     |                                             ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::task::Task::unpark': renamed to `notify`
[INFO] [stderr]    --> src/sync/mpsc_queue.rs:137:18
[INFO] [stderr]     |
[INFO] [stderr] 137 |             task.unpark();
[INFO] [stderr]     |                  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `lockless`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4bebe0acfdddad5c4de92a36cf0890e963783803202aad11169174bf24502110"`
[INFO] running `"docker" "rm" "-f" "4bebe0acfdddad5c4de92a36cf0890e963783803202aad11169174bf24502110"`
[INFO] [stdout] 4bebe0acfdddad5c4de92a36cf0890e963783803202aad11169174bf24502110