[INFO] cloning repository https://github.com/dac456/cabal-extract
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dac456/cabal-extract" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdac456%2Fcabal-extract", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdac456%2Fcabal-extract'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d4ce572f25ea76dda873ce9a095229925060df7
[INFO] checking dac456/cabal-extract against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdac456%2Fcabal-extract" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dac456/cabal-extract on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dac456/cabal-extract
[INFO] finished tweaking git repo https://github.com/dac456/cabal-extract
[INFO] tweaked toml for git repo https://github.com/dac456/cabal-extract written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/dac456/cabal-extract already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bmp v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b1ebd3e2397655f28979c76d2cf9dc1761d286603feb881f60fb79ffd97f6d4f
[INFO] running `Command { std: "docker" "start" "-a" "b1ebd3e2397655f28979c76d2cf9dc1761d286603feb881f60fb79ffd97f6d4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1ebd3e2397655f28979c76d2cf9dc1761d286603feb881f60fb79ffd97f6d4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1ebd3e2397655f28979c76d2cf9dc1761d286603feb881f60fb79ffd97f6d4f", kill_on_drop: false }`
[INFO] [stdout] b1ebd3e2397655f28979c76d2cf9dc1761d286603feb881f60fb79ffd97f6d4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7eb59c236c13f5bd330314b3ffe50a7c71d74fcf6fa66101551e040cc2b1ded
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b7eb59c236c13f5bd330314b3ffe50a7c71d74fcf6fa66101551e040cc2b1ded", kill_on_drop: false }`
[INFO] [stderr]     Checking bmp v0.2.0
[INFO] [stderr]     Checking cabal-extract v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/postprocess/superxbr.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     (dw1 - dw2)
[INFO] [stdout]     |     ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/postprocess/superxbr.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     (dw1 - dw2)
[INFO] [stdout]     |     ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hdr_size`
[INFO] [stdout]   --> src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let hdr_size = buf.read_u16::<LittleEndian>().unwrap();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hdr_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flags`
[INFO] [stdout]   --> src/main.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let flags = buf.read_u16::<LittleEndian>().unwrap();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_flags`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/main.rs:116:41
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn read_level_data<T: ReadBytesExt>(mut buf: &mut T) -> Level {
[INFO] [stdout]     |                                         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:141:17
[INFO] [stdout]     |
[INFO] [stdout] 141 |             Err(e) => break
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:173:22
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:173:30
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:173:38
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `af` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:173:46
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/postprocess/superxbr.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             let cx = x / f;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cy`
[INFO] [stdout]    --> src/postprocess/superxbr.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let cy = y / f;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_cy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:258:22
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:258:30
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:258:38
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `af` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:258:46
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:312:22
[INFO] [stdout]     |
[INFO] [stdout] 312 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:312:30
[INFO] [stdout]     |
[INFO] [stdout] 312 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:312:38
[INFO] [stdout]     |
[INFO] [stdout] 312 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `af` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:312:46
[INFO] [stdout]     |
[INFO] [stdout] 312 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/postprocess/superxbr.rs:344:17
[INFO] [stdout]     |
[INFO] [stdout] 344 |             let cx = x / f;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cy`
[INFO] [stdout]    --> src/postprocess/superxbr.rs:345:17
[INFO] [stdout]     |
[INFO] [stdout] 345 |             let cy = y / f;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_cy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:393:22
[INFO] [stdout]     |
[INFO] [stdout] 393 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:393:30
[INFO] [stdout]     |
[INFO] [stdout] 393 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:393:38
[INFO] [stdout]     |
[INFO] [stdout] 393 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `af` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:393:46
[INFO] [stdout]     |
[INFO] [stdout] 393 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:56:33
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn read_header<T: ReadBytesExt>(mut buf: &mut T) -> Result<(u16, u32), std::io::Error> {
[INFO] [stdout]    |                                 ----^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:71:39
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn read_palette_data<T: ReadBytesExt>(mut buf: &mut T) -> Palette {
[INFO] [stdout]    |                                       ----^^^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hdr_size`
[INFO] [stdout]   --> src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let hdr_size = buf.read_u16::<LittleEndian>().unwrap();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hdr_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flags`
[INFO] [stdout]   --> src/main.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let flags = buf.read_u16::<LittleEndian>().unwrap();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_flags`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> src/main.rs:116:41
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn read_level_data<T: ReadBytesExt>(mut buf: &mut T) -> Level {
[INFO] [stdout]     |                                         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:141:17
[INFO] [stdout]     |
[INFO] [stdout] 141 |             Err(e) => break
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:173:22
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:173:30
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:173:38
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `af` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:173:46
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/postprocess/superxbr.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |             let cx = x / f;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cy`
[INFO] [stdout]    --> src/postprocess/superxbr.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |             let cy = y / f;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_cy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:258:22
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:258:30
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:258:38
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `af` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:258:46
[INFO] [stdout]     |
[INFO] [stdout] 258 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:312:22
[INFO] [stdout]     |
[INFO] [stdout] 312 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:312:30
[INFO] [stdout]     |
[INFO] [stdout] 312 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:312:38
[INFO] [stdout]     |
[INFO] [stdout] 312 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `af` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:312:46
[INFO] [stdout]     |
[INFO] [stdout] 312 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cx`
[INFO] [stdout]    --> src/postprocess/superxbr.rs:344:17
[INFO] [stdout]     |
[INFO] [stdout] 344 |             let cx = x / f;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_cx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cy`
[INFO] [stdout]    --> src/postprocess/superxbr.rs:345:17
[INFO] [stdout]     |
[INFO] [stdout] 345 |             let cy = y / f;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_cy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:393:22
[INFO] [stdout]     |
[INFO] [stdout] 393 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:393:30
[INFO] [stdout]     |
[INFO] [stdout] 393 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bf` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:393:38
[INFO] [stdout]     |
[INFO] [stdout] 393 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                      ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `af` is never read
[INFO] [stdout]    --> src/postprocess/superxbr.rs:393:46
[INFO] [stdout]     |
[INFO] [stdout] 393 |             let (mut rf, mut gf, mut bf, mut af) = (0.0, 0.0, 0.0, 0.0);
[INFO] [stdout]     |                                              ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:56:33
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn read_header<T: ReadBytesExt>(mut buf: &mut T) -> Result<(u16, u32), std::io::Error> {
[INFO] [stdout]    |                                 ----^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:71:39
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn read_palette_data<T: ReadBytesExt>(mut buf: &mut T) -> Palette {
[INFO] [stdout]    |                                       ----^^^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:116:37
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn read_level_data<T: ReadBytesExt>(mut buf: &mut T) -> Level {
[INFO] [stdout]     |                                     ----^^^
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let mut level = Level { rebuild_zone: 0 };
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:116:37
[INFO] [stdout]     |
[INFO] [stdout] 116 | fn read_level_data<T: ReadBytesExt>(mut buf: &mut T) -> Level {
[INFO] [stdout]     |                                     ----^^^
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let mut level = Level { rebuild_zone: 0 };
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/postprocess/superxbr.rs:411:17
[INFO] [stdout]     |
[INFO] [stdout] 411 |             let mut ri: i32 = clamp(rf.ceil() as i32, 0, 255);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/postprocess/superxbr.rs:412:17
[INFO] [stdout]     |
[INFO] [stdout] 412 |             let mut gi: i32 = clamp(gf.ceil() as i32, 0, 255);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/postprocess/superxbr.rs:413:17
[INFO] [stdout]     |
[INFO] [stdout] 413 |             let mut bi: i32 = clamp(bf.ceil() as i32, 0, 255);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/postprocess/superxbr.rs:414:17
[INFO] [stdout]     |
[INFO] [stdout] 414 |             let mut ai: i32 = clamp(af.ceil() as i32, 0, 255);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pixel_size`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pixel_size: f32
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rebuild_zone`
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     rebuild_zone: u16
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `step_by`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(step_by)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 130 |     file.read_to_end(&mut data);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/postprocess/superxbr.rs:131:21
[INFO] [stdout]     |
[INFO] [stdout] 131 |             let mut Y: [[f32; 4]; 4] = [[0.0; 4]; 4];
[INFO] [stdout]     |                     ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/postprocess/superxbr.rs:216:21
[INFO] [stdout]     |
[INFO] [stdout] 216 |             let mut Y: [[f32; 4]; 4] = [[0.0; 4]; 4];
[INFO] [stdout]     |                     ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/postprocess/superxbr.rs:351:21
[INFO] [stdout]     |
[INFO] [stdout] 351 |             let mut Y: [[f32; 4]; 4] = [[0.0; 4]; 4];
[INFO] [stdout]     |                     ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/postprocess/superxbr.rs:411:17
[INFO] [stdout]     |
[INFO] [stdout] 411 |             let mut ri: i32 = clamp(rf.ceil() as i32, 0, 255);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/postprocess/superxbr.rs:412:17
[INFO] [stdout]     |
[INFO] [stdout] 412 |             let mut gi: i32 = clamp(gf.ceil() as i32, 0, 255);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/postprocess/superxbr.rs:413:17
[INFO] [stdout]     |
[INFO] [stdout] 413 |             let mut bi: i32 = clamp(bf.ceil() as i32, 0, 255);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/postprocess/superxbr.rs:414:17
[INFO] [stdout]     |
[INFO] [stdout] 414 |             let mut ai: i32 = clamp(af.ceil() as i32, 0, 255);
[INFO] [stdout]     |                 ----^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pixel_size`
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pixel_size: f32
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rebuild_zone`
[INFO] [stdout]   --> src/main.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     rebuild_zone: u16
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `step_by`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(step_by)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cabal-extract` due to 2 previous errors; 42 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 130 |     file.read_to_end(&mut data);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/postprocess/superxbr.rs:131:21
[INFO] [stdout]     |
[INFO] [stdout] 131 |             let mut Y: [[f32; 4]; 4] = [[0.0; 4]; 4];
[INFO] [stdout]     |                     ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/postprocess/superxbr.rs:216:21
[INFO] [stdout]     |
[INFO] [stdout] 216 |             let mut Y: [[f32; 4]; 4] = [[0.0; 4]; 4];
[INFO] [stdout]     |                     ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/postprocess/superxbr.rs:351:21
[INFO] [stdout]     |
[INFO] [stdout] 351 |             let mut Y: [[f32; 4]; 4] = [[0.0; 4]; 4];
[INFO] [stdout]     |                     ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b7eb59c236c13f5bd330314b3ffe50a7c71d74fcf6fa66101551e040cc2b1ded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7eb59c236c13f5bd330314b3ffe50a7c71d74fcf6fa66101551e040cc2b1ded", kill_on_drop: false }`
[INFO] [stdout] b7eb59c236c13f5bd330314b3ffe50a7c71d74fcf6fa66101551e040cc2b1ded