[INFO] updating cached repository Michael2109/genetic-algorithms
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Michael2109/genetic-algorithms
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Michael2109/genetic-algorithms" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Michael2109/genetic-algorithms"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Michael2109/genetic-algorithms'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Michael2109/genetic-algorithms" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Michael2109/genetic-algorithms"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Michael2109/genetic-algorithms'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 99c630bdd95c98763a6f86098151f806291e08ba
[INFO] sha for GitHub repo Michael2109/genetic-algorithms: 99c630bdd95c98763a6f86098151f806291e08ba
[INFO] validating manifest of Michael2109/genetic-algorithms on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Michael2109/genetic-algorithms on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Michael2109/genetic-algorithms
[INFO] finished frobbing Michael2109/genetic-algorithms
[INFO] frobbed toml for Michael2109/genetic-algorithms written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/Michael2109/genetic-algorithms/Cargo.toml
[INFO] started frobbing Michael2109/genetic-algorithms
[INFO] finished frobbing Michael2109/genetic-algorithms
[INFO] frobbed toml for Michael2109/genetic-algorithms written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Michael2109/genetic-algorithms/Cargo.toml
[INFO] crate Michael2109/genetic-algorithms already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Michael2109/genetic-algorithms against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-0/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/Michael2109/genetic-algorithms:/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=forbid" "-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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 90efc2472715d9b7cd292d25d999df836a613ba08bf665a374f31ff34491fc95
[INFO] running `"docker" "start" "-a" "90efc2472715d9b7cd292d25d999df836a613ba08bf665a374f31ff34491fc95"`
[INFO] [stderr]     Checking genetic-algorithms v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `simulation`
[INFO] [stderr]   --> src/entity.rs:63:35
[INFO] [stderr]    |
[INFO] [stderr] 63 |     fn collision_detection(&self, simulation: &Simulation) {
[INFO] [stderr]    |                                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_simulation`
[INFO] [stderr] warning: unused variable: `simulation`
[INFO] [stderr]   --> src/entity.rs:63:35
[INFO] [stderr]    |
[INFO] [stderr] 63 |     fn collision_detection(&self, simulation: &Simulation) {
[INFO] [stderr]    |                                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_simulation`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/simulation.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         for mut f in &self.fish {
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/simulation.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         for mut f in &self.fish {
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.91s
[INFO] running `"docker" "inspect" "90efc2472715d9b7cd292d25d999df836a613ba08bf665a374f31ff34491fc95"`
[INFO] running `"docker" "rm" "-f" "90efc2472715d9b7cd292d25d999df836a613ba08bf665a374f31ff34491fc95"`
[INFO] [stdout] 90efc2472715d9b7cd292d25d999df836a613ba08bf665a374f31ff34491fc95