[INFO] cloning repository https://github.com/frostblooded/tribes_sim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/frostblooded/tribes_sim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrostblooded%2Ftribes_sim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrostblooded%2Ftribes_sim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e180cc4a78318400d1b5cd0555870bcccedf8e98
[INFO] testing frostblooded/tribes_sim against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrostblooded%2Ftribes_sim" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/frostblooded/tribes_sim on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/frostblooded/tribes_sim
[INFO] finished tweaking git repo https://github.com/frostblooded/tribes_sim
[INFO] tweaked toml for git repo https://github.com/frostblooded/tribes_sim written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/frostblooded/tribes_sim already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f143c4e596dd3844c47ed2988b86b179a88afdf255962eca09299ee1fd5a8bce
[INFO] running `Command { std: "docker" "start" "-a" "f143c4e596dd3844c47ed2988b86b179a88afdf255962eca09299ee1fd5a8bce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f143c4e596dd3844c47ed2988b86b179a88afdf255962eca09299ee1fd5a8bce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f143c4e596dd3844c47ed2988b86b179a88afdf255962eca09299ee1fd5a8bce", kill_on_drop: false }`
[INFO] [stdout] f143c4e596dd3844c47ed2988b86b179a88afdf255962eca09299ee1fd5a8bce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17e64226fee70107c1641a9f0e0e0d3a9e154190b4daa4ac59ccb6872c59ac40
[INFO] running `Command { std: "docker" "start" "-a" "17e64226fee70107c1641a9f0e0e0d3a9e154190b4daa4ac59ccb6872c59ac40", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling tribes_sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `world`
[INFO] [stdout]  --> src/agent.rs:9:26
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn update(&mut self, world: &mut World) {}
[INFO] [stdout]   |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_world`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update`
[INFO] [stdout]  --> src/agent.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn update(&mut self, world: &mut World) {}
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `world` as mutable more than once at a time
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 7  |     world.generate();
[INFO] [stdout]    |     ----- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 12 |         world.update();
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         second mutable borrow occurs here
[INFO] [stdout]    |         first borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0499]: cannot borrow `world` as mutable more than once at a time
[INFO] [stdout]   --> src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 7  |     world.generate();
[INFO] [stdout]    |     ----- first mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 15 |         world.draw();
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         second mutable borrow occurs here
[INFO] [stdout]    |         first borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0499`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tribes_sim` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "17e64226fee70107c1641a9f0e0e0d3a9e154190b4daa4ac59ccb6872c59ac40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17e64226fee70107c1641a9f0e0e0d3a9e154190b4daa4ac59ccb6872c59ac40", kill_on_drop: false }`
[INFO] [stdout] 17e64226fee70107c1641a9f0e0e0d3a9e154190b4daa4ac59ccb6872c59ac40