[INFO] updating cached repository GlooriousWalrus/learning-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/GlooriousWalrus/learning-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/GlooriousWalrus/learning-rust" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/GlooriousWalrus/learning-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/GlooriousWalrus/learning-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/GlooriousWalrus/learning-rust" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/GlooriousWalrus/learning-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/GlooriousWalrus/learning-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 241c9363e70bf1d58cdaf3325cc28ae38a4c285b
[INFO] sha for GitHub repo GlooriousWalrus/learning-rust: 241c9363e70bf1d58cdaf3325cc28ae38a4c285b
[INFO] validating manifest of GlooriousWalrus/learning-rust on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of GlooriousWalrus/learning-rust on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing GlooriousWalrus/learning-rust
[INFO] finished frobbing GlooriousWalrus/learning-rust
[INFO] frobbed toml for GlooriousWalrus/learning-rust written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/GlooriousWalrus/learning-rust/Cargo.toml
[INFO] started frobbing GlooriousWalrus/learning-rust
[INFO] finished frobbing GlooriousWalrus/learning-rust
[INFO] frobbed toml for GlooriousWalrus/learning-rust written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/GlooriousWalrus/learning-rust/Cargo.toml
[INFO] crate GlooriousWalrus/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/GlooriousWalrus/learning-rust/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking GlooriousWalrus/learning-rust against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-0/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/GlooriousWalrus/learning-rust:/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 18aac319747588d144a0d192071cfeb08d05a1065c8517c865437adea342c929
[INFO] running `"docker" "start" "-a" "18aac319747588d144a0d192071cfeb08d05a1065c8517c865437adea342c929"`
[INFO] [stderr]     Checking bunnies v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/game/mod.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |         _ => panic!("this is a terrible mistake!"),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/game/mod.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/game/mod.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `kek`
[INFO] [stderr]    --> src/game/mod.rs:132:13
[INFO] [stderr]     |
[INFO] [stderr] 132 |         let kek = colony.remove(rng.gen_range(0, colony.len()));
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_kek`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut rng = rand::thread_rng();
[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/game/mod.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let mut temp: bunny::Sex = rand::random();
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/mod.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/mod.rs:101:21
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 let mut temp: bunny::Sex = rand::random();
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/mod.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |     let mut cullsize: usize = colony.len() / 2;
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/mod.rs:136:11
[INFO] [stderr]     |
[INFO] [stderr] 136 | fn infect(mut colony: &mut Vec<bunny::Bunny>) {
[INFO] [stderr]     |           ----^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/mod.rs:146:13
[INFO] [stderr]     |
[INFO] [stderr] 146 |         let mut newghoul = colony.iter().position(|r| r == colony.iter().nth(rng.gen_range(0, colony.len())).unwrap() && r.ghoul == false);
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/game/mod.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |         _ => panic!("this is a terrible mistake!"),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LASTNAMES`
[INFO] [stderr]   --> src/game/bunny.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | / pub const LASTNAMES: [&'static str; 16] = [
[INFO] [stderr] 46 | |     "Smith",
[INFO] [stderr] 47 | |     "Johnson",
[INFO] [stderr] 48 | |     "Williams",
[INFO] [stderr] ...  |
[INFO] [stderr] 61 | |     "Moore",
[INFO] [stderr] 62 | | ];
[INFO] [stderr]    | |__^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/game/mod.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/game/mod.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `kek`
[INFO] [stderr]    --> src/game/mod.rs:132:13
[INFO] [stderr]     |
[INFO] [stderr] 132 |         let kek = colony.remove(rng.gen_range(0, colony.len()));
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_kek`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut rng = rand::thread_rng();
[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/game/mod.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let mut temp: bunny::Sex = rand::random();
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/mod.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/mod.rs:101:21
[INFO] [stderr]     |
[INFO] [stderr] 101 |                 let mut temp: bunny::Sex = rand::random();
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/mod.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |     let mut cullsize: usize = colony.len() / 2;
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/mod.rs:136:11
[INFO] [stderr]     |
[INFO] [stderr] 136 | fn infect(mut colony: &mut Vec<bunny::Bunny>) {
[INFO] [stderr]     |           ----^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/game/mod.rs:146:13
[INFO] [stderr]     |
[INFO] [stderr] 146 |         let mut newghoul = colony.iter().position(|r| r == colony.iter().nth(rng.gen_range(0, colony.len())).unwrap() && r.ghoul == false);
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LASTNAMES`
[INFO] [stderr]   --> src/game/bunny.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | / pub const LASTNAMES: [&'static str; 16] = [
[INFO] [stderr] 46 | |     "Smith",
[INFO] [stderr] 47 | |     "Johnson",
[INFO] [stderr] 48 | |     "Williams",
[INFO] [stderr] ...  |
[INFO] [stderr] 61 | |     "Moore",
[INFO] [stderr] 62 | | ];
[INFO] [stderr]    | |__^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "18aac319747588d144a0d192071cfeb08d05a1065c8517c865437adea342c929"`
[INFO] running `"docker" "rm" "-f" "18aac319747588d144a0d192071cfeb08d05a1065c8517c865437adea342c929"`
[INFO] [stdout] 18aac319747588d144a0d192071cfeb08d05a1065c8517c865437adea342c929