[INFO] updating cached repository slavam2605/cnn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/slavam2605/cnn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/slavam2605/cnn" "work/ex/beta-1.38-1/sources/1.37.0/gh/slavam2605/cnn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/slavam2605/cnn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/slavam2605/cnn" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slavam2605/cnn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slavam2605/cnn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8496c7182ebd52c1c763aee0475dcc01df866de7
[INFO] sha for GitHub repo slavam2605/cnn: 8496c7182ebd52c1c763aee0475dcc01df866de7
[INFO] validating manifest of slavam2605/cnn on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of slavam2605/cnn on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing slavam2605/cnn
[INFO] finished frobbing slavam2605/cnn
[INFO] frobbed toml for slavam2605/cnn written to work/ex/beta-1.38-1/sources/1.37.0/gh/slavam2605/cnn/Cargo.toml
[INFO] started frobbing slavam2605/cnn
[INFO] finished frobbing slavam2605/cnn
[INFO] frobbed toml for slavam2605/cnn written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slavam2605/cnn/Cargo.toml
[INFO] crate slavam2605/cnn already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing slavam2605/cnn against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/slavam2605/cnn:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] d778b1a6c6f58801b765f3782eec0977671bf2287b3f74381ca0c54ebe22e9f5
[INFO] running `"docker" "start" "-a" "d778b1a6c6f58801b765f3782eec0977671bf2287b3f74381ca0c54ebe22e9f5"`
[INFO] [stderr]    Compiling cnn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(associated_type_defaults)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(box_syntax)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnn.rs:30:32
[INFO] [stderr]    |
[INFO] [stderr] 30 |     layers: Vec<Rc<RefCell<Box<NetworkLayer>>>>
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn NetworkLayer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnn.rs:39:35
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let layer: Rc<RefCell<Box<NetworkLayer>>> = Rc::new(RefCell::new(box FullLayer::new(2, &result.layers[0])));
[INFO] [stderr]    |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn NetworkLayer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnn.rs:41:35
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let layer: Rc<RefCell<Box<NetworkLayer>>> = Rc::new(RefCell::new(box FullLayer::new(2, &result.layers[1])));
[INFO] [stderr]    |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn NetworkLayer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cnn.rs:43:35
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let layer: Rc<RefCell<Box<NetworkLayer>>> = Rc::new(RefCell::new(box FullLayer::new(2, &result.layers[2])));
[INFO] [stderr]    |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn NetworkLayer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/full_layer.rs:9:26
[INFO] [stderr]   |
[INFO] [stderr] 9 |     prev: Rc<RefCell<Box<NetworkLayer>>>,
[INFO] [stderr]   |                          ^^^^^^^^^^^^ help: use `dyn`: `dyn NetworkLayer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/full_layer.rs:19:48
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn new(n: usize, prev: &Rc<RefCell<Box<NetworkLayer>>>) -> FullLayer {
[INFO] [stderr]    |                                                ^^^^^^^^^^^^ help: use `dyn`: `dyn NetworkLayer`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `cnn`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d778b1a6c6f58801b765f3782eec0977671bf2287b3f74381ca0c54ebe22e9f5"`
[INFO] running `"docker" "rm" "-f" "d778b1a6c6f58801b765f3782eec0977671bf2287b3f74381ca0c54ebe22e9f5"`
[INFO] [stdout] d778b1a6c6f58801b765f3782eec0977671bf2287b3f74381ca0c54ebe22e9f5