[INFO] updating cached repository https://github.com/RaineForest/FateExtraSolver
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8e117b3ce106f17fb2a59d453ad1f590b4e38c75
[INFO] testing RaineForest/FateExtraSolver against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaineForest%2FFateExtraSolver" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RaineForest/FateExtraSolver on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/RaineForest/FateExtraSolver
[INFO] finished tweaking git repo https://github.com/RaineForest/FateExtraSolver
[INFO] tweaked toml for git repo https://github.com/RaineForest/FateExtraSolver written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/RaineForest/FateExtraSolver already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e32a23c54e3020ee7587941dbe102c412a2f03b72df58407088ade28c82d31e2
[INFO] running `"docker" "start" "-a" "e32a23c54e3020ee7587941dbe102c412a2f03b72df58407088ade28c82d31e2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling fate_extra_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/action_count.rs:159:50
[INFO] [stderr]     |
[INFO] [stderr] 159 |     pub fn get_safe_strat(threshold: f32) -> Box<Fn(&ActionCount) -> Action> {
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&ActionCount) -> Action`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/enemy.rs:70:60
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn trump_string(counts: &Vec<ActionCount>, strat: &Fn(&ActionCount) -> Action) -> Vec<Action> {
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&ActionCount) -> Action`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/enemy_builder.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     lazy_static!{
[INFO] [stderr] 26 | |         static ref RE_NAME: Regex = Regex::new(r"^(.+):$").unwrap();
[INFO] [stderr] 27 | |         static ref RE_ACTIONS: Regex = Regex::new(r"^([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])$").unwrap();
[INFO] [stderr] 28 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/enemy_builder.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     lazy_static!{
[INFO] [stderr] 26 | |         static ref RE_NAME: Regex = Regex::new(r"^(.+):$").unwrap();
[INFO] [stderr] 27 | |         static ref RE_ACTIONS: Regex = Regex::new(r"^([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])$").unwrap();
[INFO] [stderr] 28 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     patterns.iter().map(|x| print_pattern(&x)).collect::<Vec<_>>();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:83:17
[INFO] [stderr]    |
[INFO] [stderr] 83 | /                 enemies.iter().map(|(k,_)| {
[INFO] [stderr] 84 | |                     println!("{}", k);
[INFO] [stderr] 85 | |                 }).collect::<Vec<_>>();
[INFO] [stderr]    | |_______________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/enemy.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 | /         self.action_strings.iter().map(|x| {
[INFO] [stderr] 50 | |             x.iter().map(|y| {
[INFO] [stderr] 51 | |                 print!("{}\t", y);
[INFO] [stderr] 52 | |             }).collect::<Vec<_>>();
[INFO] [stderr] 53 | |             println!();
[INFO] [stderr] 54 | |         }).collect::<Vec<_>>();
[INFO] [stderr]    | |_______________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/enemy.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 | /             x.iter().map(|y| {
[INFO] [stderr] 51 | |                 print!("{}\t", y);
[INFO] [stderr] 52 | |             }).collect::<Vec<_>>();
[INFO] [stderr]    | |___________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.81s
[INFO] running `"docker" "inspect" "e32a23c54e3020ee7587941dbe102c412a2f03b72df58407088ade28c82d31e2"`
[INFO] running `"docker" "rm" "-f" "e32a23c54e3020ee7587941dbe102c412a2f03b72df58407088ade28c82d31e2"`
[INFO] [stdout] e32a23c54e3020ee7587941dbe102c412a2f03b72df58407088ade28c82d31e2
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ed358c55ad2fbf6a01cd6ac8388d396b75c4b6db04f26cd02842f5eaa0ae691c
[INFO] running `"docker" "start" "-a" "ed358c55ad2fbf6a01cd6ac8388d396b75c4b6db04f26cd02842f5eaa0ae691c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling fate_extra_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/action_count.rs:159:50
[INFO] [stderr]     |
[INFO] [stderr] 159 |     pub fn get_safe_strat(threshold: f32) -> Box<Fn(&ActionCount) -> Action> {
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&ActionCount) -> Action`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/enemy.rs:70:60
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn trump_string(counts: &Vec<ActionCount>, strat: &Fn(&ActionCount) -> Action) -> Vec<Action> {
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&ActionCount) -> Action`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/enemy_builder.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     lazy_static!{
[INFO] [stderr] 26 | |         static ref RE_NAME: Regex = Regex::new(r"^(.+):$").unwrap();
[INFO] [stderr] 27 | |         static ref RE_ACTIONS: Regex = Regex::new(r"^([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])$").unwrap();
[INFO] [stderr] 28 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/enemy_builder.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     lazy_static!{
[INFO] [stderr] 26 | |         static ref RE_NAME: Regex = Regex::new(r"^(.+):$").unwrap();
[INFO] [stderr] 27 | |         static ref RE_ACTIONS: Regex = Regex::new(r"^([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])$").unwrap();
[INFO] [stderr] 28 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     patterns.iter().map(|x| print_pattern(&x)).collect::<Vec<_>>();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:83:17
[INFO] [stderr]    |
[INFO] [stderr] 83 | /                 enemies.iter().map(|(k,_)| {
[INFO] [stderr] 84 | |                     println!("{}", k);
[INFO] [stderr] 85 | |                 }).collect::<Vec<_>>();
[INFO] [stderr]    | |_______________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/enemy.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 | /         self.action_strings.iter().map(|x| {
[INFO] [stderr] 50 | |             x.iter().map(|y| {
[INFO] [stderr] 51 | |                 print!("{}\t", y);
[INFO] [stderr] 52 | |             }).collect::<Vec<_>>();
[INFO] [stderr] 53 | |             println!();
[INFO] [stderr] 54 | |         }).collect::<Vec<_>>();
[INFO] [stderr]    | |_______________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/enemy.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 | /             x.iter().map(|y| {
[INFO] [stderr] 51 | |                 print!("{}\t", y);
[INFO] [stderr] 52 | |             }).collect::<Vec<_>>();
[INFO] [stderr]    | |___________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "ed358c55ad2fbf6a01cd6ac8388d396b75c4b6db04f26cd02842f5eaa0ae691c"`
[INFO] running `"docker" "rm" "-f" "ed358c55ad2fbf6a01cd6ac8388d396b75c4b6db04f26cd02842f5eaa0ae691c"`
[INFO] [stdout] ed358c55ad2fbf6a01cd6ac8388d396b75c4b6db04f26cd02842f5eaa0ae691c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stdout] b2506847f08d8fcdbf9a0099a667d88d32605d79f823407ea8e9ac8beacbd778
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "b2506847f08d8fcdbf9a0099a667d88d32605d79f823407ea8e9ac8beacbd778"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/action_count.rs:159:50
[INFO] [stderr]     |
[INFO] [stderr] 159 |     pub fn get_safe_strat(threshold: f32) -> Box<Fn(&ActionCount) -> Action> {
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&ActionCount) -> Action`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/enemy.rs:70:60
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn trump_string(counts: &Vec<ActionCount>, strat: &Fn(&ActionCount) -> Action) -> Vec<Action> {
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&ActionCount) -> Action`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/enemy_builder.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     lazy_static!{
[INFO] [stderr] 26 | |         static ref RE_NAME: Regex = Regex::new(r"^(.+):$").unwrap();
[INFO] [stderr] 27 | |         static ref RE_ACTIONS: Regex = Regex::new(r"^([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])$").unwrap();
[INFO] [stderr] 28 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/enemy_builder.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | /     lazy_static!{
[INFO] [stderr] 26 | |         static ref RE_NAME: Regex = Regex::new(r"^(.+):$").unwrap();
[INFO] [stderr] 27 | |         static ref RE_ACTIONS: Regex = Regex::new(r"^([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])\s+([AGBS_])$").unwrap();
[INFO] [stderr] 28 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     patterns.iter().map(|x| print_pattern(&x)).collect::<Vec<_>>();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/main.rs:83:17
[INFO] [stderr]    |
[INFO] [stderr] 83 | /                 enemies.iter().map(|(k,_)| {
[INFO] [stderr] 84 | |                     println!("{}", k);
[INFO] [stderr] 85 | |                 }).collect::<Vec<_>>();
[INFO] [stderr]    | |_______________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/enemy.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 | /         self.action_strings.iter().map(|x| {
[INFO] [stderr] 50 | |             x.iter().map(|y| {
[INFO] [stderr] 51 | |                 print!("{}\t", y);
[INFO] [stderr] 52 | |             }).collect::<Vec<_>>();
[INFO] [stderr] 53 | |             println!();
[INFO] [stderr] 54 | |         }).collect::<Vec<_>>();
[INFO] [stderr]    | |_______________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/enemy.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 | /             x.iter().map(|y| {
[INFO] [stderr] 51 | |                 print!("{}\t", y);
[INFO] [stderr] 52 | |             }).collect::<Vec<_>>();
[INFO] [stderr]    | |___________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fate_extra_solver-756a2d7941680ae7
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b2506847f08d8fcdbf9a0099a667d88d32605d79f823407ea8e9ac8beacbd778"`
[INFO] running `"docker" "rm" "-f" "b2506847f08d8fcdbf9a0099a667d88d32605d79f823407ea8e9ac8beacbd778"`
[INFO] [stdout] b2506847f08d8fcdbf9a0099a667d88d32605d79f823407ea8e9ac8beacbd778