[INFO] cloning repository https://github.com/ja1778/rust_deep_learn
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ja1778/rust_deep_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fja1778%2Frust_deep_learn"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fja1778%2Frust_deep_learn'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 93739847d4aaec0fbdb2cb6cd2a09e3082877247
[INFO] testing ja1778/rust_deep_learn against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fja1778%2Frust_deep_learn" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ja1778/rust_deep_learn on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ja1778/rust_deep_learn
[INFO] finished tweaking git repo https://github.com/ja1778/rust_deep_learn
[INFO] tweaked toml for git repo https://github.com/ja1778/rust_deep_learn written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/ja1778/rust_deep_learn already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c94dc2df409938717332af7077a8b48c1ca0a09f64c3ac8168d9a74800de4c21
[INFO] running `"docker" "start" "-a" "c94dc2df409938717332af7077a8b48c1ca0a09f64c3ac8168d9a74800de4c21"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling threadpool v1.8.0
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling rust_deep_learn 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:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `operation_fn` should have an upper camel case name
[INFO] [stderr]   --> src/matrix.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub type operation_fn = Fn(Float) -> Float;
[INFO] [stderr]    |          ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `OperationFn`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/matrix.rs:10:25
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub type operation_fn = Fn(Float) -> Float;
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Float) -> Float`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crossbeam::channel as channel1`
[INFO] [stderr]   --> src/lib.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     use crossbeam::channel as channel1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crossbeam::thread::scope`
[INFO] [stderr]   --> src/lib.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     use crossbeam::thread::scope;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/lib.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     use std::rc::Rc;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AtomicUsize`, `Ordering`
[INFO] [stderr]   --> src/lib.rs:17:29
[INFO] [stderr]    |
[INFO] [stderr] 17 |     use std::sync::atomic::{AtomicUsize, Ordering};
[INFO] [stderr]    |                             ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]   --> src/lib.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     use std::thread;
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `rust_deep_learn`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c94dc2df409938717332af7077a8b48c1ca0a09f64c3ac8168d9a74800de4c21"`
[INFO] running `"docker" "rm" "-f" "c94dc2df409938717332af7077a8b48c1ca0a09f64c3ac8168d9a74800de4c21"`
[INFO] [stdout] c94dc2df409938717332af7077a8b48c1ca0a09f64c3ac8168d9a74800de4c21