[INFO] updating cached repository lduchosal/battlesnake
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lduchosal/battlesnake
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lduchosal/battlesnake" "work/ex/beta-1.37-6/sources/1.36.0/gh/lduchosal/battlesnake"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/lduchosal/battlesnake'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lduchosal/battlesnake" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lduchosal/battlesnake"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lduchosal/battlesnake'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0906c57460605be8f3aa55eedaa044abed3307eb
[INFO] sha for GitHub repo lduchosal/battlesnake: 0906c57460605be8f3aa55eedaa044abed3307eb
[INFO] validating manifest of lduchosal/battlesnake on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lduchosal/battlesnake on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lduchosal/battlesnake
[INFO] finished frobbing lduchosal/battlesnake
[INFO] frobbed toml for lduchosal/battlesnake written to work/ex/beta-1.37-6/sources/1.36.0/gh/lduchosal/battlesnake/Cargo.toml
[INFO] started frobbing lduchosal/battlesnake
[INFO] finished frobbing lduchosal/battlesnake
[INFO] frobbed toml for lduchosal/battlesnake written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lduchosal/battlesnake/Cargo.toml
[INFO] crate lduchosal/battlesnake already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing lduchosal/battlesnake against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/lduchosal/battlesnake:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c7c1501764af383d63268e6014c078bf04ebf15238cc246623e5f206cc6b1356
[INFO] running `"docker" "start" "-a" "c7c1501764af383d63268e6014c078bf04ebf15238cc246623e5f206cc6b1356"`
[INFO] [stderr]    Compiling syn v0.15.28
[INFO] [stderr]    Compiling tiny_http v0.6.2
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling indextree v3.1.1
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling battlesnake 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(try_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[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 `battlesnake`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c7c1501764af383d63268e6014c078bf04ebf15238cc246623e5f206cc6b1356"`
[INFO] running `"docker" "rm" "-f" "c7c1501764af383d63268e6014c078bf04ebf15238cc246623e5f206cc6b1356"`
[INFO] [stdout] c7c1501764af383d63268e6014c078bf04ebf15238cc246623e5f206cc6b1356