[INFO] updating cached repository bclube/ray_tracer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bclube/ray_tracer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bclube/ray_tracer" "work/ex/beta-1.38-1/sources/1.37.0/gh/bclube/ray_tracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/bclube/ray_tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bclube/ray_tracer" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bclube/ray_tracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bclube/ray_tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 530e345f2078a82dc13652c11b7abb4c44075273
[INFO] sha for GitHub repo bclube/ray_tracer: 530e345f2078a82dc13652c11b7abb4c44075273
[INFO] validating manifest of bclube/ray_tracer 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 bclube/ray_tracer 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 bclube/ray_tracer
[INFO] finished frobbing bclube/ray_tracer
[INFO] frobbed toml for bclube/ray_tracer written to work/ex/beta-1.38-1/sources/1.37.0/gh/bclube/ray_tracer/Cargo.toml
[INFO] started frobbing bclube/ray_tracer
[INFO] finished frobbing bclube/ray_tracer
[INFO] frobbed toml for bclube/ray_tracer written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bclube/ray_tracer/Cargo.toml
[INFO] crate bclube/ray_tracer 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 bclube/ray_tracer against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/bclube/ray_tracer:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 123185bc0a16c256c9208b6505462c27065b92ea9c3ddc150add7bdae939eb55
[INFO] running `"docker" "start" "-a" "123185bc0a16c256c9208b6505462c27065b92ea9c3ddc150add7bdae939eb55"`
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling png v0.12.0
[INFO] [stderr]    Compiling ray_tracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(int_to_from_bytes)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/hit_detection/hitable.rs:17:22
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub type HitableSS = Hitable + Send + Sync;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Hitable + Send + Sync`
[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/hit_detection/hitable_list.rs:6:31
[INFO] [stderr]   |
[INFO] [stderr] 6 | impl<'a> Hitable for &'a [Box<Hitable>] {
[INFO] [stderr]   |                               ^^^^^^^ help: use `dyn`: `dyn Hitable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/image/write.rs:27:32
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/surface/material.rs:14:23
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type MaterialSS = Material + Send + Sync;
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Material + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/world/model.rs:10:23
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub material: Arc<Material>,
[INFO] [stderr]    |                       ^^^^^^^^ help: use `dyn`: `dyn Material`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/world/model.rs:18:20
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub type ModelSS = Model + Sync + Send;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Model + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/world/model_list.rs:6:29
[INFO] [stderr]   |
[INFO] [stderr] 6 | impl<'a> Model for &'a [Box<Model>] {
[INFO] [stderr]   |                             ^^^^^ help: use `dyn`: `dyn Model`
[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 `ray_tracer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "123185bc0a16c256c9208b6505462c27065b92ea9c3ddc150add7bdae939eb55"`
[INFO] running `"docker" "rm" "-f" "123185bc0a16c256c9208b6505462c27065b92ea9c3ddc150add7bdae939eb55"`
[INFO] [stdout] 123185bc0a16c256c9208b6505462c27065b92ea9c3ddc150add7bdae939eb55