[INFO] updating cached repository Redhotsmasher/RedhotScaler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Redhotsmasher/RedhotScaler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Redhotsmasher/RedhotScaler" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/Redhotsmasher/RedhotScaler"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/Redhotsmasher/RedhotScaler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Redhotsmasher/RedhotScaler" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/Redhotsmasher/RedhotScaler"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/Redhotsmasher/RedhotScaler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ea83a4fc3894c2a23b4326e39d7f2d74c4e23bd8
[INFO] sha for GitHub repo Redhotsmasher/RedhotScaler: ea83a4fc3894c2a23b4326e39d7f2d74c4e23bd8
[INFO] validating manifest of Redhotsmasher/RedhotScaler 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 Redhotsmasher/RedhotScaler 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 Redhotsmasher/RedhotScaler
[INFO] finished frobbing Redhotsmasher/RedhotScaler
[INFO] frobbed toml for Redhotsmasher/RedhotScaler written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/Redhotsmasher/RedhotScaler/Cargo.toml
[INFO] started frobbing Redhotsmasher/RedhotScaler
[INFO] finished frobbing Redhotsmasher/RedhotScaler
[INFO] frobbed toml for Redhotsmasher/RedhotScaler written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/Redhotsmasher/RedhotScaler/Cargo.toml
[INFO] crate Redhotsmasher/RedhotScaler 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] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Redhotsmasher/RedhotScaler against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-1/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/Redhotsmasher/RedhotScaler:/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] b9644460c74bfdea5de13b1d3971aeff8f9c9878fef5a670833e1585c2a03851
[INFO] running `"docker" "start" "-a" "b9644460c74bfdea5de13b1d3971aeff8f9c9878fef5a670833e1585c2a03851"`
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking soundthingy v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]     --> src/main.rs:1067:23
[INFO] [stderr]      |
[INFO] [stderr] 1067 |         oldbdiff[j] = (oldsignal[j]-oldsignal[j-1]);
[INFO] [stderr]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]     --> src/main.rs:1071:23
[INFO] [stderr]      |
[INFO] [stderr] 1071 |         oldfdiff[j] = (oldsignal[j]-oldsignal[j+1]);
[INFO] [stderr]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]     --> src/main.rs:1075:23
[INFO] [stderr]      |
[INFO] [stderr] 1075 |         newbdiff[j] = (newsignal[j]-newsignal[j-1]);
[INFO] [stderr]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]     --> src/main.rs:1079:23
[INFO] [stderr]      |
[INFO] [stderr] 1079 |         newfdiff[j] = (newsignal[j]-newsignal[j+1]);
[INFO] [stderr]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]     --> src/main.rs:1067:23
[INFO] [stderr]      |
[INFO] [stderr] 1067 |         oldbdiff[j] = (oldsignal[j]-oldsignal[j-1]);
[INFO] [stderr]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]     --> src/main.rs:1071:23
[INFO] [stderr]      |
[INFO] [stderr] 1071 |         oldfdiff[j] = (oldsignal[j]-oldsignal[j+1]);
[INFO] [stderr]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]     --> src/main.rs:1075:23
[INFO] [stderr]      |
[INFO] [stderr] 1075 |         newbdiff[j] = (newsignal[j]-newsignal[j-1]);
[INFO] [stderr]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]     --> src/main.rs:1079:23
[INFO] [stderr]      |
[INFO] [stderr] 1079 |         newfdiff[j] = (newsignal[j]-newsignal[j+1]);
[INFO] [stderr]      |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `y` is never read
[INFO] [stderr]   --> src/main.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut y = 0;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `temp` is never read
[INFO] [stderr]    --> src/main.rs:177:25
[INFO] [stderr]     |
[INFO] [stderr] 177 |                 let mut temp = 0.0;
[INFO] [stderr]     |                         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `resultlen`
[INFO] [stderr]    --> src/main.rs:223:9
[INFO] [stderr]     |
[INFO] [stderr] 223 |     let resultlen = result.len();
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_resultlen`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `newsignal`
[INFO] [stderr]    --> src/main.rs:430:13
[INFO] [stderr]     |
[INFO] [stderr] 430 |     let mut newsignal = nn4s_interpolate_signal(&signal);
[INFO] [stderr]     |             ^^^^^^^^^ help: consider prefixing with an underscore: `_newsignal`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `newsignal` is never read
[INFO] [stderr]    --> src/main.rs:437:13
[INFO] [stderr]     |
[INFO] [stderr] 437 |     let mut newsignal = nn4s_interpolate_signal(&signal);
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:446:13
[INFO] [stderr]     |
[INFO] [stderr] 446 |         for k in 0..iter2 {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `newimage`
[INFO] [stderr]    --> src/main.rs:466:13
[INFO] [stderr]     |
[INFO] [stderr] 466 |     let mut newimage = nn4s_interpolate_image_2d(&image);
[INFO] [stderr]     |             ^^^^^^^^ help: consider prefixing with an underscore: `_newimage`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `newimage` is never read
[INFO] [stderr]    --> src/main.rs:469:13
[INFO] [stderr]     |
[INFO] [stderr] 469 |     let mut newimage = nn4s_interpolate_image_2d(&image);
[INFO] [stderr]     |             ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dnewimage` is never read
[INFO] [stderr]    --> src/main.rs:476:17
[INFO] [stderr]     |
[INFO] [stderr] 476 |         let mut dnewimage = convolve_image_horizontal(&newimage, &kernel);
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:485:13
[INFO] [stderr]     |
[INFO] [stderr] 485 |         for k in 0..iter2 {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:489:13
[INFO] [stderr]     |
[INFO] [stderr] 489 |         for k in 0..iter2 {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/main.rs:845:5
[INFO] [stderr]     |
[INFO] [stderr] 845 |     c = 0;
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/main.rs:888:5
[INFO] [stderr]     |
[INFO] [stderr] 888 |     c = 0;
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/main.rs:928:5
[INFO] [stderr]     |
[INFO] [stderr] 928 |     c = 0;
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/main.rs:968:5
[INFO] [stderr]     |
[INFO] [stderr] 968 |     c = 0;
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]     --> src/main.rs:1006:5
[INFO] [stderr]      |
[INFO] [stderr] 1006 |     c = 0;
[INFO] [stderr]      |     ^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `temp` is never read
[INFO] [stderr]     --> src/main.rs:1099:25
[INFO] [stderr]      |
[INFO] [stderr] 1099 |                 let mut temp = 0.0;
[INFO] [stderr]      |                         ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `temp` is never read
[INFO] [stderr]     --> src/main.rs:1111:25
[INFO] [stderr]      |
[INFO] [stderr] 1111 |                 let mut temp = 0.0;
[INFO] [stderr]      |                         ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `y` is never read
[INFO] [stderr]   --> src/main.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut y = 0;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `temp` is never read
[INFO] [stderr]    --> src/main.rs:177:25
[INFO] [stderr]     |
[INFO] [stderr] 177 |                 let mut temp = 0.0;
[INFO] [stderr]     |                         ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `resultlen`
[INFO] [stderr]    --> src/main.rs:223:9
[INFO] [stderr]     |
[INFO] [stderr] 223 |     let resultlen = result.len();
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_resultlen`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `newsignal`
[INFO] [stderr]    --> src/main.rs:430:13
[INFO] [stderr]     |
[INFO] [stderr] 430 |     let mut newsignal = nn4s_interpolate_signal(&signal);
[INFO] [stderr]     |             ^^^^^^^^^ help: consider prefixing with an underscore: `_newsignal`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `newsignal` is never read
[INFO] [stderr]    --> src/main.rs:437:13
[INFO] [stderr]     |
[INFO] [stderr] 437 |     let mut newsignal = nn4s_interpolate_signal(&signal);
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:446:13
[INFO] [stderr]     |
[INFO] [stderr] 446 |         for k in 0..iter2 {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `newimage`
[INFO] [stderr]    --> src/main.rs:466:13
[INFO] [stderr]     |
[INFO] [stderr] 466 |     let mut newimage = nn4s_interpolate_image_2d(&image);
[INFO] [stderr]     |             ^^^^^^^^ help: consider prefixing with an underscore: `_newimage`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `newimage` is never read
[INFO] [stderr]    --> src/main.rs:469:13
[INFO] [stderr]     |
[INFO] [stderr] 469 |     let mut newimage = nn4s_interpolate_image_2d(&image);
[INFO] [stderr]     |             ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `dnewimage` is never read
[INFO] [stderr]    --> src/main.rs:476:17
[INFO] [stderr]     |
[INFO] [stderr] 476 |         let mut dnewimage = convolve_image_horizontal(&newimage, &kernel);
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:485:13
[INFO] [stderr]     |
[INFO] [stderr] 485 |         for k in 0..iter2 {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:489:13
[INFO] [stderr]     |
[INFO] [stderr] 489 |         for k in 0..iter2 {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/main.rs:845:5
[INFO] [stderr]     |
[INFO] [stderr] 845 |     c = 0;
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/main.rs:888:5
[INFO] [stderr]     |
[INFO] [stderr] 888 |     c = 0;
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/main.rs:928:5
[INFO] [stderr]     |
[INFO] [stderr] 928 |     c = 0;
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]    --> src/main.rs:968:5
[INFO] [stderr]     |
[INFO] [stderr] 968 |     c = 0;
[INFO] [stderr]     |     ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]     --> src/main.rs:1006:5
[INFO] [stderr]      |
[INFO] [stderr] 1006 |     c = 0;
[INFO] [stderr]      |     ^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `temp` is never read
[INFO] [stderr]     --> src/main.rs:1099:25
[INFO] [stderr]      |
[INFO] [stderr] 1099 |                 let mut temp = 0.0;
[INFO] [stderr]      |                         ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `temp` is never read
[INFO] [stderr]     --> src/main.rs:1111:25
[INFO] [stderr]      |
[INFO] [stderr] 1111 |                 let mut temp = 0.0;
[INFO] [stderr]      |                         ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:350:17
[INFO] [stderr]     |
[INFO] [stderr] 350 |             let mut scaledline = redhotscale(&currline);
[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:395:17
[INFO] [stderr]     |
[INFO] [stderr] 395 |             let mut scaledcol = redhotscale(&currcol);
[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/main.rs:430:9
[INFO] [stderr]     |
[INFO] [stderr] 430 |     let mut newsignal = nn4s_interpolate_signal(&signal);
[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/main.rs:466:9
[INFO] [stderr]     |
[INFO] [stderr] 466 |     let mut newimage = nn4s_interpolate_image_2d(&image);
[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/main.rs:467:9
[INFO] [stderr]     |
[INFO] [stderr] 467 |     let mut oldimage = mul_image(&image, 1.0);
[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/main.rs:523:17
[INFO] [stderr]     |
[INFO] [stderr] 523 |             let mut scaledline = nn4s_interpolate_signal(&currline);
[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/main.rs:562:17
[INFO] [stderr]     |
[INFO] [stderr] 562 |             let mut scaledcol = nn4s_interpolate_signal(&currcol);
[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/main.rs:601:17
[INFO] [stderr]     |
[INFO] [stderr] 601 |             let mut scaledline = subsample_signal_offset(&currline, factor, offset);
[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/main.rs:640:17
[INFO] [stderr]     |
[INFO] [stderr] 640 |             let mut scaledcol = subsample_signal_offset(&currcol, factor, offset);
[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/main.rs:350:17
[INFO] [stderr]     |
[INFO] [stderr] 350 |             let mut scaledline = redhotscale(&currline);
[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:677:17
[INFO] [stderr]     |
[INFO] [stderr] 677 |             let mut convolvedline = unpadsignal(&convolve(&padsignal(&currline, kernel.len()), &kernel), kernel.len());
[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/main.rs:714:17
[INFO] [stderr]     |
[INFO] [stderr] 714 |             let mut convolvedcol = unpadsignal(&convolve(&padsignal(&currcol, kernel.len()), &kernel), kernel.len());
[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/main.rs:395:17
[INFO] [stderr]     |
[INFO] [stderr] 395 |             let mut scaledcol = redhotscale(&currcol);
[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/main.rs:753:17
[INFO] [stderr]     |
[INFO] [stderr] 753 |             let mut antirippledline = antiripple(&curroldline, &currline);
[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/main.rs:792:17
[INFO] [stderr]     |
[INFO] [stderr] 792 |             let mut antirippledcol = antiripple(&curroldcol, &currcol);
[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/main.rs:430:9
[INFO] [stderr]     |
[INFO] [stderr] 430 |     let mut newsignal = nn4s_interpolate_signal(&signal);
[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/main.rs:466:9
[INFO] [stderr]     |
[INFO] [stderr] 466 |     let mut newimage = nn4s_interpolate_image_2d(&image);
[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/main.rs:467:9
[INFO] [stderr]     |
[INFO] [stderr] 467 |     let mut oldimage = mul_image(&image, 1.0);
[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/main.rs:917:17
[INFO] [stderr]     |
[INFO] [stderr] 917 |             let mut addedline = add_signals(&currline, &currline2);
[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/main.rs:523:17
[INFO] [stderr]     |
[INFO] [stderr] 523 |             let mut scaledline = nn4s_interpolate_signal(&currline);
[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/main.rs:957:17
[INFO] [stderr]     |
[INFO] [stderr] 957 |             let mut subtractedline = subtract_signals(&currline, &currline2);
[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/main.rs:562:17
[INFO] [stderr]     |
[INFO] [stderr] 562 |             let mut scaledcol = nn4s_interpolate_signal(&currcol);
[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/main.rs:995:17
[INFO] [stderr]     |
[INFO] [stderr] 995 |             let mut multipliedline = mul_signal(&currline, factor);
[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/main.rs:601:17
[INFO] [stderr]     |
[INFO] [stderr] 601 |             let mut scaledline = subsample_signal_offset(&currline, factor, offset);
[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/main.rs:640:17
[INFO] [stderr]     |
[INFO] [stderr] 640 |             let mut scaledcol = subsample_signal_offset(&currcol, factor, offset);
[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/main.rs:677:17
[INFO] [stderr]     |
[INFO] [stderr] 677 |             let mut convolvedline = unpadsignal(&convolve(&padsignal(&currline, kernel.len()), &kernel), kernel.len());
[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/main.rs:714:17
[INFO] [stderr]     |
[INFO] [stderr] 714 |             let mut convolvedcol = unpadsignal(&convolve(&padsignal(&currcol, kernel.len()), &kernel), kernel.len());
[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/main.rs:753:17
[INFO] [stderr]     |
[INFO] [stderr] 753 |             let mut antirippledline = antiripple(&curroldline, &currline);
[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/main.rs:792:17
[INFO] [stderr]     |
[INFO] [stderr] 792 |             let mut antirippledcol = antiripple(&curroldcol, &currcol);
[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/main.rs:917:17
[INFO] [stderr]     |
[INFO] [stderr] 917 |             let mut addedline = add_signals(&currline, &currline2);
[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/main.rs:957:17
[INFO] [stderr]     |
[INFO] [stderr] 957 |             let mut subtractedline = subtract_signals(&currline, &currline2);
[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/main.rs:995:17
[INFO] [stderr]     |
[INFO] [stderr] 995 |             let mut multipliedline = mul_signal(&currline, factor);
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Subwave`
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Subwave {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `scale_image_horizontal`
[INFO] [stderr]    --> src/main.rs:333:1
[INFO] [stderr]     |
[INFO] [stderr] 333 | fn scale_image_horizontal(image: Image) -> Image {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `scale_image_vertical`
[INFO] [stderr]    --> src/main.rs:378:1
[INFO] [stderr]     |
[INFO] [stderr] 378 | fn scale_image_vertical(image: Image) -> Image {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `antiripple_bak`
[INFO] [stderr]     --> src/main.rs:1140:1
[INFO] [stderr]      |
[INFO] [stderr] 1140 | fn antiripple_bak(oldsignal: &[Float], newsignal: &[Float]) -> Vec<Float> {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Subwave`
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Subwave {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `scale_image_horizontal`
[INFO] [stderr]    --> src/main.rs:333:1
[INFO] [stderr]     |
[INFO] [stderr] 333 | fn scale_image_horizontal(image: Image) -> Image {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `scale_image_vertical`
[INFO] [stderr]    --> src/main.rs:378:1
[INFO] [stderr]     |
[INFO] [stderr] 378 | fn scale_image_vertical(image: Image) -> Image {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `antiripple_bak`
[INFO] [stderr]     --> src/main.rs:1140:1
[INFO] [stderr]      |
[INFO] [stderr] 1140 | fn antiripple_bak(oldsignal: &[Float], newsignal: &[Float]) -> Vec<Float> {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.90s
[INFO] running `"docker" "inspect" "b9644460c74bfdea5de13b1d3971aeff8f9c9878fef5a670833e1585c2a03851"`
[INFO] running `"docker" "rm" "-f" "b9644460c74bfdea5de13b1d3971aeff8f9c9878fef5a670833e1585c2a03851"`
[INFO] [stdout] b9644460c74bfdea5de13b1d3971aeff8f9c9878fef5a670833e1585c2a03851