[INFO] updating cached repository AntoineSebert/local_hack_day_2018 [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/AntoineSebert/local_hack_day_2018 [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/AntoineSebert/local_hack_day_2018" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/AntoineSebert/local_hack_day_2018"` [INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/AntoineSebert/local_hack_day_2018'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/AntoineSebert/local_hack_day_2018" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/AntoineSebert/local_hack_day_2018"` [INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/AntoineSebert/local_hack_day_2018'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] d2c5e66d2b273bd11288fa8fcfe99e197e319f64 [INFO] sha for GitHub repo AntoineSebert/local_hack_day_2018: d2c5e66d2b273bd11288fa8fcfe99e197e319f64 [INFO] validating manifest of AntoineSebert/local_hack_day_2018 on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of AntoineSebert/local_hack_day_2018 on toolchain try#f45cc3094ee337acd688771b9234318046b0572d [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing AntoineSebert/local_hack_day_2018 [INFO] finished frobbing AntoineSebert/local_hack_day_2018 [INFO] frobbed toml for AntoineSebert/local_hack_day_2018 written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/AntoineSebert/local_hack_day_2018/Cargo.toml [INFO] started frobbing AntoineSebert/local_hack_day_2018 [INFO] finished frobbing AntoineSebert/local_hack_day_2018 [INFO] frobbed toml for AntoineSebert/local_hack_day_2018 written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/AntoineSebert/local_hack_day_2018/Cargo.toml [INFO] crate AntoineSebert/local_hack_day_2018 already has a lockfile, it will not be regenerated [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking AntoineSebert/local_hack_day_2018 against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914 [INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-5/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/AntoineSebert/local_hack_day_2018:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] e7186052d24b13b01b7aa43862068d0d29ca1764c4d518805034de92edfab595 [INFO] running `"docker" "start" "-a" "e7186052d24b13b01b7aa43862068d0d29ca1764c4d518805034de92edfab595"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] [stderr] Checking local_hack_day_2018 v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:71:17 [INFO] [stderr] | [INFO] [stderr] 71 | let mut neighbors: u8 = 0; [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] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:126:9 [INFO] [stderr] | [INFO] [stderr] 126 | for mut element in cells_to_update.iter_mut() { [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `world[_][_]` as immutable because it is also borrowed as mutable [INFO] [stderr] --> src/main.rs:114:34 [INFO] [stderr] | [INFO] [stderr] 114 | let is_alive: bool = world[n][n_2].clone(); [INFO] [stderr] | ^^^^^^^^^^^^^ immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 121 | cells_to_update.push(&mut world[n][n_2]); [INFO] [stderr] | --------------- ------------------ mutable borrow occurs here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0499]: cannot borrow `world[_][_]` as mutable more than once at a time [INFO] [stderr] --> src/main.rs:117:42 [INFO] [stderr] | [INFO] [stderr] 117 | cells_to_update.push(&mut world[n][n_2]); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ second mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 121 | cells_to_update.push(&mut world[n][n_2]); [INFO] [stderr] | ------------------ first mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 126 | for mut element in cells_to_update.iter_mut() { [INFO] [stderr] | --------------- first borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0499]: cannot borrow `world[_][_]` as mutable more than once at a time [INFO] [stderr] --> src/main.rs:121:38 [INFO] [stderr] | [INFO] [stderr] 121 | cells_to_update.push(&mut world[n][n_2]); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ mutable borrow starts here in previous iteration of loop [INFO] [stderr] [INFO] [stderr] error: aborting due to 3 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0499, E0502. [INFO] [stderr] For more information about an error, try `rustc --explain E0499`. [INFO] [stderr] error: Could not compile `local_hack_day_2018`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:71:17 [INFO] [stderr] | [INFO] [stderr] 71 | let mut neighbors: u8 = 0; [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] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:126:9 [INFO] [stderr] | [INFO] [stderr] 126 | for mut element in cells_to_update.iter_mut() { [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] error[E0502]: cannot borrow `world[_][_]` as immutable because it is also borrowed as mutable [INFO] [stderr] --> src/main.rs:114:34 [INFO] [stderr] | [INFO] [stderr] 114 | let is_alive: bool = world[n][n_2].clone(); [INFO] [stderr] | ^^^^^^^^^^^^^ immutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 121 | cells_to_update.push(&mut world[n][n_2]); [INFO] [stderr] | --------------- ------------------ mutable borrow occurs here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0499]: cannot borrow `world[_][_]` as mutable more than once at a time [INFO] [stderr] --> src/main.rs:117:42 [INFO] [stderr] | [INFO] [stderr] 117 | cells_to_update.push(&mut world[n][n_2]); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ second mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 121 | cells_to_update.push(&mut world[n][n_2]); [INFO] [stderr] | ------------------ first mutable borrow occurs here [INFO] [stderr] ... [INFO] [stderr] 126 | for mut element in cells_to_update.iter_mut() { [INFO] [stderr] | --------------- first borrow later used here [INFO] [stderr] [INFO] [stderr] error[E0499]: cannot borrow `world[_][_]` as mutable more than once at a time [INFO] [stderr] --> src/main.rs:121:38 [INFO] [stderr] | [INFO] [stderr] 121 | cells_to_update.push(&mut world[n][n_2]); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ mutable borrow starts here in previous iteration of loop [INFO] [stderr] [INFO] [stderr] error: aborting due to 3 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0499, E0502. [INFO] [stderr] For more information about an error, try `rustc --explain E0499`. [INFO] [stderr] error: Could not compile `local_hack_day_2018`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "e7186052d24b13b01b7aa43862068d0d29ca1764c4d518805034de92edfab595"` [INFO] running `"docker" "rm" "-f" "e7186052d24b13b01b7aa43862068d0d29ca1764c4d518805034de92edfab595"` [INFO] [stdout] e7186052d24b13b01b7aa43862068d0d29ca1764c4d518805034de92edfab595