[INFO] updating cached repository elefAntti/bit_board
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/elefAntti/bit_board
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/elefAntti/bit_board" "work/ex/beta-1.38-1/sources/1.37.0/gh/elefAntti/bit_board"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/elefAntti/bit_board'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/elefAntti/bit_board" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/elefAntti/bit_board"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/elefAntti/bit_board'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d1d2ece22c88ae9828d28c1e432b683ccdca6435
[INFO] sha for GitHub repo elefAntti/bit_board: d1d2ece22c88ae9828d28c1e432b683ccdca6435
[INFO] validating manifest of elefAntti/bit_board 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 elefAntti/bit_board 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 elefAntti/bit_board
[INFO] finished frobbing elefAntti/bit_board
[INFO] frobbed toml for elefAntti/bit_board written to work/ex/beta-1.38-1/sources/1.37.0/gh/elefAntti/bit_board/Cargo.toml
[INFO] started frobbing elefAntti/bit_board
[INFO] finished frobbing elefAntti/bit_board
[INFO] frobbed toml for elefAntti/bit_board written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/elefAntti/bit_board/Cargo.toml
[INFO] crate elefAntti/bit_board 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 elefAntti/bit_board 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/elefAntti/bit_board:/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] c1cd3b262c61d0bacf28a4cf6e9f9b39d5333eca574dae4f7cfbb43de9db306e
[INFO] running `"docker" "start" "-a" "c1cd3b262c61d0bacf28a4cf6e9f9b39d5333eca574dae4f7cfbb43de9db306e"`
[INFO] [stderr]    Compiling bit_board v0.1.0 (/opt/crater/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: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:12:22
[INFO] [stderr]    |
[INFO] [stderr] 12 | type OthelloPlayer = game::Player< Situation = othello::OthelloSituation, Move = OthelloMove >;
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn game::Player< Situation = othello::OthelloSituation, Move = OthelloMove >`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[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 `bit_board`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c1cd3b262c61d0bacf28a4cf6e9f9b39d5333eca574dae4f7cfbb43de9db306e"`
[INFO] running `"docker" "rm" "-f" "c1cd3b262c61d0bacf28a4cf6e9f9b39d5333eca574dae4f7cfbb43de9db306e"`
[INFO] [stdout] c1cd3b262c61d0bacf28a4cf6e9f9b39d5333eca574dae4f7cfbb43de9db306e