[INFO] updating cached repository meamuri/optimization_methods
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/meamuri/optimization_methods
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/meamuri/optimization_methods" "work/ex/clippy-test-run/sources/stable/gh/meamuri/optimization_methods"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/meamuri/optimization_methods'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/meamuri/optimization_methods" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/meamuri/optimization_methods"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/meamuri/optimization_methods'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ebf50dd461de29582dfa3339acee7bd3750e6c01
[INFO] sha for GitHub repo meamuri/optimization_methods: ebf50dd461de29582dfa3339acee7bd3750e6c01
[INFO] validating manifest of meamuri/optimization_methods 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 meamuri/optimization_methods 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 meamuri/optimization_methods
[INFO] finished frobbing meamuri/optimization_methods
[INFO] frobbed toml for meamuri/optimization_methods written to work/ex/clippy-test-run/sources/stable/gh/meamuri/optimization_methods/Cargo.toml
[INFO] started frobbing meamuri/optimization_methods
[INFO] finished frobbing meamuri/optimization_methods
[INFO] frobbed toml for meamuri/optimization_methods written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/meamuri/optimization_methods/Cargo.toml
[INFO] crate meamuri/optimization_methods 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 meamuri/optimization_methods against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/meamuri/optimization_methods:/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] e1652acdb7670b285b7b3fe5def313227c786ce5b00804147d33acabecbed549
[INFO] running `"docker" "start" "-a" "e1652acdb7670b285b7b3fe5def313227c786ce5b00804147d33acabecbed549"`
[INFO] [stderr]     Checking optimization_methods v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/methods/multi_dim_methods/fastest_descent.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let (mut a, mut b) = (-10_000.0, 10_000.0);    
[INFO] [stderr]   |                     ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]  --> src/methods/multi_dim_methods/fastest_descent.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let (mut a, mut b) = (-10_000.0, 10_000.0);    
[INFO] [stderr]   |                     ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/methods/single_dim_methods/parabolic.rs:17:18
[INFO] [stderr]    |
[INFO] [stderr] 17 |               else {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 18 | |                 if i1 > i2 {
[INFO] [stderr] 19 | |                     u3 = u2;
[INFO] [stderr] 20 | |                     u2 = d;
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |                 }
[INFO] [stderr] 25 | |             }            
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 17 |             else if i1 > i2 {
[INFO] [stderr] 18 |     u3 = u2;
[INFO] [stderr] 19 |     u2 = d;
[INFO] [stderr] 20 | }
[INFO] [stderr] 21 | else if i2 > i3 {
[INFO] [stderr] 22 |     u1 = d;
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/methods/single_dim_methods/parabolic.rs:45:14
[INFO] [stderr]    |
[INFO] [stderr] 45 |           else {
[INFO] [stderr]    |  ______________^
[INFO] [stderr] 46 | |             if f(u2 - eps) < i2{
[INFO] [stderr] 47 | |                 u2 -= eps;
[INFO] [stderr] 48 | |             }
[INFO] [stderr] ...  |
[INFO] [stderr] 54 | |             }
[INFO] [stderr] 55 | |         } // else  
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 45 |         else if f(u2 - eps) < i2{
[INFO] [stderr] 46 |     u2 -= eps;
[INFO] [stderr] 47 | }
[INFO] [stderr] 48 | else if f(u2 + eps) < i2 {
[INFO] [stderr] 49 |     u2 += eps;
[INFO] [stderr] 50 | }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/methods/single_dim_methods/parabolic.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |               else {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 36 | |                 if i3 > i2 {
[INFO] [stderr] 37 | |                     u1 = u2;
[INFO] [stderr] 38 | |                     u2 = d;
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |                 }
[INFO] [stderr] 43 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 35 |             else if i3 > i2 {
[INFO] [stderr] 36 |     u1 = u2;
[INFO] [stderr] 37 |     u2 = d;
[INFO] [stderr] 38 | }
[INFO] [stderr] 39 | else if i1 > i2 {
[INFO] [stderr] 40 |     u3 = d;
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/dialogs/mod.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |         Ok(..) => return input,
[INFO] [stderr]   |                   ^^^^^^^^^^^^ help: remove `return` as shown: `input`
[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/dialogs/mod.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 |             return true;
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]    |
[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/dialogs/mod.rs:20:20
[INFO] [stderr]    |
[INFO] [stderr] 20 |         Err(..) => return false,
[INFO] [stderr]    |                    ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/methods/single_dim_methods/parabolic.rs:17:18
[INFO] [stderr]    |
[INFO] [stderr] 17 |               else {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 18 | |                 if i1 > i2 {
[INFO] [stderr] 19 | |                     u3 = u2;
[INFO] [stderr] 20 | |                     u2 = d;
[INFO] [stderr] ...  |
[INFO] [stderr] 24 | |                 }
[INFO] [stderr] 25 | |             }            
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 17 |             else if i1 > i2 {
[INFO] [stderr] 18 |     u3 = u2;
[INFO] [stderr] 19 |     u2 = d;
[INFO] [stderr] 20 | }
[INFO] [stderr] 21 | else if i2 > i3 {
[INFO] [stderr] 22 |     u1 = d;
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/methods/single_dim_methods/parabolic.rs:45:14
[INFO] [stderr]    |
[INFO] [stderr] 45 |           else {
[INFO] [stderr]    |  ______________^
[INFO] [stderr] 46 | |             if f(u2 - eps) < i2{
[INFO] [stderr] 47 | |                 u2 -= eps;
[INFO] [stderr] 48 | |             }
[INFO] [stderr] ...  |
[INFO] [stderr] 54 | |             }
[INFO] [stderr] 55 | |         } // else  
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 45 |         else if f(u2 - eps) < i2{
[INFO] [stderr] 46 |     u2 -= eps;
[INFO] [stderr] 47 | }
[INFO] [stderr] 48 | else if f(u2 + eps) < i2 {
[INFO] [stderr] 49 |     u2 += eps;
[INFO] [stderr] 50 | }
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]   --> src/methods/single_dim_methods/parabolic.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |               else {
[INFO] [stderr]    |  __________________^
[INFO] [stderr] 36 | |                 if i3 > i2 {
[INFO] [stderr] 37 | |                     u1 = u2;
[INFO] [stderr] 38 | |                     u2 = d;
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |                 }
[INFO] [stderr] 43 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]    |
[INFO] [stderr] 35 |             else if i3 > i2 {
[INFO] [stderr] 36 |     u1 = u2;
[INFO] [stderr] 37 |     u2 = d;
[INFO] [stderr] 38 | }
[INFO] [stderr] 39 | else if i1 > i2 {
[INFO] [stderr] 40 |     u3 = d;
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]  --> src/dialogs/mod.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |         Ok(..) => return input,
[INFO] [stderr]   |                   ^^^^^^^^^^^^ help: remove `return` as shown: `input`
[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/dialogs/mod.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 |             return true;
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]    |
[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/dialogs/mod.rs:20:20
[INFO] [stderr]    |
[INFO] [stderr] 20 |         Err(..) => return false,
[INFO] [stderr]    |                    ^^^^^^^^^^^^ help: remove `return` as shown: `false`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `"docker" "inspect" "e1652acdb7670b285b7b3fe5def313227c786ce5b00804147d33acabecbed549"`
[INFO] running `"docker" "rm" "-f" "e1652acdb7670b285b7b3fe5def313227c786ce5b00804147d33acabecbed549"`
[INFO] [stdout] e1652acdb7670b285b7b3fe5def313227c786ce5b00804147d33acabecbed549