[INFO] updating cached repository gtestault/primitive-recursive-functions
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gtestault/primitive-recursive-functions
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gtestault/primitive-recursive-functions" "work/ex/clippy-test-run/sources/stable/gh/gtestault/primitive-recursive-functions"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/gtestault/primitive-recursive-functions'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gtestault/primitive-recursive-functions" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gtestault/primitive-recursive-functions"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gtestault/primitive-recursive-functions'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2aa361a39e95d45c2ba52a07f0d3326b5211a9fd
[INFO] sha for GitHub repo gtestault/primitive-recursive-functions: 2aa361a39e95d45c2ba52a07f0d3326b5211a9fd
[INFO] validating manifest of gtestault/primitive-recursive-functions on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gtestault/primitive-recursive-functions on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gtestault/primitive-recursive-functions
[INFO] finished frobbing gtestault/primitive-recursive-functions
[INFO] frobbed toml for gtestault/primitive-recursive-functions written to work/ex/clippy-test-run/sources/stable/gh/gtestault/primitive-recursive-functions/Cargo.toml
[INFO] started frobbing gtestault/primitive-recursive-functions
[INFO] finished frobbing gtestault/primitive-recursive-functions
[INFO] frobbed toml for gtestault/primitive-recursive-functions written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gtestault/primitive-recursive-functions/Cargo.toml
[INFO] crate gtestault/primitive-recursive-functions has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting gtestault/primitive-recursive-functions against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/gtestault/primitive-recursive-functions:/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7b42571171b3d3e12f69c9153c1bb69357681c8e4426964c3bcfe5968e0ee1b6
[INFO] running `"docker" "start" "-a" "7b42571171b3d3e12f69c9153c1bb69357681c8e4426964c3bcfe5968e0ee1b6"`
[INFO] [stderr]     Checking primitive-recursive-functions v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:690:9
[INFO] [stderr]     |
[INFO] [stderr] 690 |         return String::from("");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from("")`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:690:9
[INFO] [stderr]     |
[INFO] [stderr] 690 |         return String::from("");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from("")`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/main.rs:217:16
[INFO] [stderr]     |
[INFO] [stderr] 217 |       type Out = <<Succ<A> as Larger<RHS>>::Out as If<
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 218 | |         Succ<<<RHS as Sub<Succ<A>>>::Out as Div<RHS>>::Out>,
[INFO] [stderr] 219 | |         <<RHS as Sub<Succ<A>>>::Out as Div<RHS>>::Out,
[INFO] [stderr] 220 | |     >>::Out;
[INFO] [stderr]     | |___________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/main.rs:250:16
[INFO] [stderr]     |
[INFO] [stderr] 250 |     type Out = <<<Succ<A> as Div<RHS>>::Out as Mul<RHS>>::Out as Sub<Succ<A>>>::Out;
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:801:9
[INFO] [stderr]     |
[INFO] [stderr] 801 |         format!("")
[INFO] [stderr]     |         ^^^^^^^^^^^ help: consider using .to_string(): `"".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/main.rs:217:16
[INFO] [stderr]     |
[INFO] [stderr] 217 |       type Out = <<Succ<A> as Larger<RHS>>::Out as If<
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 218 | |         Succ<<<RHS as Sub<Succ<A>>>::Out as Div<RHS>>::Out>,
[INFO] [stderr] 219 | |         <<RHS as Sub<Succ<A>>>::Out as Div<RHS>>::Out,
[INFO] [stderr] 220 | |     >>::Out;
[INFO] [stderr]     | |___________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]    --> src/main.rs:250:16
[INFO] [stderr]     |
[INFO] [stderr] 250 |     type Out = <<<Succ<A> as Div<RHS>>::Out as Mul<RHS>>::Out as Sub<Succ<A>>>::Out;
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:801:9
[INFO] [stderr]     |
[INFO] [stderr] 801 |         format!("")
[INFO] [stderr]     |         ^^^^^^^^^^^ help: consider using .to_string(): `"".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 32
[INFO] [stderr]     --> src/main.rs:1175:5
[INFO] [stderr]      |
[INFO] [stderr] 1175 | /     fn arithmetic_works() {
[INFO] [stderr] 1176 | |         assert_eq!(incr::<I3, _>(), 4);
[INFO] [stderr] 1177 | |         assert_eq!(decr::<Zero, _>(), 0);
[INFO] [stderr] 1178 | |         assert_eq!(decr::<I5, _>(), 4);
[INFO] [stderr] ...    |
[INFO] [stderr] 1213 | |         );
[INFO] [stderr] 1214 | |     }
[INFO] [stderr]      | |_____^
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(clippy::cyclomatic_complexity)] on by default
[INFO] [stderr]      = help: you could split it up into multiple smaller functions
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: the function has a cyclomatic complexity of 58
[INFO] [stderr]     --> src/main.rs:1217:5
[INFO] [stderr]      |
[INFO] [stderr] 1217 | /     fn game_of_life_works() {
[INFO] [stderr] 1218 | |         assert_eq!(alive_at::<ARRAY, P10<I2>>(), 0);
[INFO] [stderr] 1219 | |         assert_eq!(alive_at::<ARRAY, P50<P10<I4>>>(), 1);
[INFO] [stderr] 1220 | |         //assert_eq!(alive_at::<ARRAY, I2>(), 0);
[INFO] [stderr] ...    |
[INFO] [stderr] 1291 | |         assert_eq!(fate::<Alive, I8, _>(), 0);
[INFO] [stderr] 1292 | |     }
[INFO] [stderr]      | |_____^
[INFO] [stderr]      |
[INFO] [stderr]      = help: you could split it up into multiple smaller functions
[INFO] [stderr]      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cyclomatic_complexity
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.52s
[INFO] running `"docker" "inspect" "7b42571171b3d3e12f69c9153c1bb69357681c8e4426964c3bcfe5968e0ee1b6"`
[INFO] running `"docker" "rm" "-f" "7b42571171b3d3e12f69c9153c1bb69357681c8e4426964c3bcfe5968e0ee1b6"`
[INFO] [stdout] 7b42571171b3d3e12f69c9153c1bb69357681c8e4426964c3bcfe5968e0ee1b6