[INFO] updating cached repository starfys/heroesoftheswarm-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/starfys/heroesoftheswarm-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/starfys/heroesoftheswarm-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/starfys/heroesoftheswarm-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/starfys/heroesoftheswarm-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/starfys/heroesoftheswarm-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/starfys/heroesoftheswarm-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/starfys/heroesoftheswarm-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8511526c36a88e1eb4793f4fbc0c7d490115827c
[INFO] sha for GitHub repo starfys/heroesoftheswarm-rs: 8511526c36a88e1eb4793f4fbc0c7d490115827c
[INFO] validating manifest of starfys/heroesoftheswarm-rs 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 starfys/heroesoftheswarm-rs 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 starfys/heroesoftheswarm-rs
[INFO] finished frobbing starfys/heroesoftheswarm-rs
[INFO] frobbed toml for starfys/heroesoftheswarm-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/starfys/heroesoftheswarm-rs/Cargo.toml
[INFO] started frobbing starfys/heroesoftheswarm-rs
[INFO] finished frobbing starfys/heroesoftheswarm-rs
[INFO] frobbed toml for starfys/heroesoftheswarm-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/starfys/heroesoftheswarm-rs/Cargo.toml
[INFO] crate starfys/heroesoftheswarm-rs 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing starfys/heroesoftheswarm-rs against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/starfys/heroesoftheswarm-rs:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] f594e4e0bbcaa4723d8acbc6d36cebca21ab4ecea7d96b453e0c39d5156aee78
[INFO] running `"docker" "start" "-a" "f594e4e0bbcaa4723d8acbc6d36cebca21ab4ecea7d96b453e0c39d5156aee78"`
[INFO] [stderr]    Compiling termcolor v0.3.3
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling hyper v0.10.13
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling mio v0.6.12
[INFO] [stderr]    Compiling env_logger v0.5.3
[INFO] [stderr]    Compiling tokio-io v0.1.4
[INFO] [stderr]    Compiling tokio-core v0.1.12
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling websocket v0.20.2
[INFO] [stderr]    Compiling heroesoftheswarm v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | #![feature(duration_from_micros)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | #![feature(iterator_step_by)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `world::World`
[INFO] [stderr]   --> src/entity.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use world::World;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/swarm_language.rs:80:12
[INFO] [stderr]    |
[INFO] [stderr] 80 |         if (command.len() == 0) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/swarm_language.rs:102:36
[INFO] [stderr]     |
[INFO] [stderr] 102 |                                 if (val.abs() <= 30.0_f32) {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/swarm_language.rs:214:16
[INFO] [stderr]     |
[INFO] [stderr] 214 |             if (command_list.len() > MAX_NUM_COMMANDS) {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `heroesoftheswarm`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f594e4e0bbcaa4723d8acbc6d36cebca21ab4ecea7d96b453e0c39d5156aee78"`
[INFO] running `"docker" "rm" "-f" "f594e4e0bbcaa4723d8acbc6d36cebca21ab4ecea7d96b453e0c39d5156aee78"`
[INFO] [stdout] f594e4e0bbcaa4723d8acbc6d36cebca21ab4ecea7d96b453e0c39d5156aee78