[INFO] crate cuid 0.1.0 is already in cache
[INFO] testing cuid-0.1.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate cuid 0.1.0 into work/builds/worker-5/source
[INFO] validating manifest of crates.io crate cuid 0.1.0 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 cuid 0.1.0
[INFO] finished tweaking crates.io crate cuid 0.1.0
[INFO] tweaked toml for crates.io crate cuid 0.1.0 written to work/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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] 12a42f2ba0d67e336cc982c3937c1b933cfe0dc0a92942184c77d1eb176af91e
[INFO] running `"docker" "start" "-a" "12a42f2ba0d67e336cc982c3937c1b933cfe0dc0a92942184c77d1eb176af91e"`
[INFO] [stderr]    Compiling cuid v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(test)]  // used for benchmarking
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(no_more_cas)]  // used by counter
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/lib.rs:7:25
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::sync::atomic::{ATOMIC_USIZE_INIT, AtomicUsize};
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/lib.rs:24:31
[INFO] [stderr]    |
[INFO] [stderr] 24 | static COUNTER: AtomicUsize = ATOMIC_USIZE_INIT;
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `AtomicUsize::new(0)`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `cuid`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "12a42f2ba0d67e336cc982c3937c1b933cfe0dc0a92942184c77d1eb176af91e"`
[INFO] running `"docker" "rm" "-f" "12a42f2ba0d67e336cc982c3937c1b933cfe0dc0a92942184c77d1eb176af91e"`
[INFO] [stdout] 12a42f2ba0d67e336cc982c3937c1b933cfe0dc0a92942184c77d1eb176af91e