[INFO] cloning repository https://github.com/martinhath/jpeg-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/martinhath/jpeg-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartinhath%2Fjpeg-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartinhath%2Fjpeg-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e3a40cc4c31d5a46e36514cc2c6abc6f1a6caaa1
[INFO] testing martinhath/jpeg-rust against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartinhath%2Fjpeg-rust" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/martinhath/jpeg-rust on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/martinhath/jpeg-rust
[INFO] finished tweaking git repo https://github.com/martinhath/jpeg-rust
[INFO] tweaked toml for git repo https://github.com/martinhath/jpeg-rust written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/martinhath/jpeg-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.4.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b18361f53cd9d6871064ad1850af272b60616b4785fb2b59c4eaeefae90cfa9
[INFO] running `Command { std: "docker" "start" "-a" "0b18361f53cd9d6871064ad1850af272b60616b4785fb2b59c4eaeefae90cfa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b18361f53cd9d6871064ad1850af272b60616b4785fb2b59c4eaeefae90cfa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b18361f53cd9d6871064ad1850af272b60616b4785fb2b59c4eaeefae90cfa9", kill_on_drop: false }`
[INFO] [stdout] 0b18361f53cd9d6871064ad1850af272b60616b4785fb2b59c4eaeefae90cfa9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2aa908887bc2b7499b45130e4e346fa0c91bd3ed1a7f41162cc6e7b24679f29c
[INFO] running `Command { std: "docker" "start" "-a" "2aa908887bc2b7499b45130e4e346fa0c91bd3ed1a7f41162cc6e7b24679f29c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling itertools v0.4.18
[INFO] [stderr]    Compiling jpeg-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try!(file.read_to_end(&mut bytes));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/jpeg/mod.rs:421:25
[INFO] [stdout]     |
[INFO] [stdout] 417 |                         return Ok(image);
[INFO] [stdout]     |                         ---------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 421 |                         i += bytes_read + bytes_skipped;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_y`
[INFO] [stdout]    --> src/jpeg/decoder.rs:260:31
[INFO] [stdout]     |
[INFO] [stdout] 260 |                 |x, y, max_x, max_y, x_factor, y_factor, max_x_factor, max_y_factor| {
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_max_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_factor`
[INFO] [stdout]    --> src/jpeg/decoder.rs:187:13
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let block_factor = max_block_hori_scale * max_block_vert_scale;
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_factor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_i`
[INFO] [stdout]    --> src/jpeg/decoder.rs:366:21
[INFO] [stdout]     |
[INFO] [stdout] 366 |                 let max_i = stride - start_x;
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_max_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `version`
[INFO] [stdout]   --> src/jpeg/mod.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     version: JFIFVersion,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `units`
[INFO] [stdout]   --> src/jpeg/mod.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     units: JFIFUnits,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pixel_density`
[INFO] [stdout]   --> src/jpeg/mod.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pixel_density: (u16, u16),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thumbnail_dimensions`
[INFO] [stdout]   --> src/jpeg/mod.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     thumbnail_dimensions: ThumbnailDimensions,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sample_precision`
[INFO] [stdout]   --> src/jpeg/mod.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     sample_precision: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_lines`
[INFO] [stdout]   --> src/jpeg/mod.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     num_lines: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `samples_per_line`
[INFO] [stdout]   --> src/jpeg/mod.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     samples_per_line: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `image_components`
[INFO] [stdout]   --> src/jpeg/mod.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     image_components: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_components`
[INFO] [stdout]    --> src/jpeg/mod.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     num_components: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start_spectral_selection`
[INFO] [stdout]    --> src/jpeg/mod.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     start_spectral_selection: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end_spectral_selection`
[INFO] [stdout]    --> src/jpeg/mod.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     end_spectral_selection: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `successive_approximation_bit_pos_high`
[INFO] [stdout]    --> src/jpeg/mod.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |     successive_approximation_bit_pos_high: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `successive_approximation_bit_pos_low`
[INFO] [stdout]    --> src/jpeg/mod.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     successive_approximation_bit_pos_low: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `BlockSlice`
[INFO] [stdout]   --> src/jpeg/decoder.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | type BlockSlice = [f32];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.67s
[INFO] running `Command { std: "docker" "inspect" "2aa908887bc2b7499b45130e4e346fa0c91bd3ed1a7f41162cc6e7b24679f29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aa908887bc2b7499b45130e4e346fa0c91bd3ed1a7f41162cc6e7b24679f29c", kill_on_drop: false }`
[INFO] [stdout] 2aa908887bc2b7499b45130e4e346fa0c91bd3ed1a7f41162cc6e7b24679f29c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 286095df5aa5a229fd46a45bf7dec94d5d6f8a630b071e1fef7ef008a321c181
[INFO] running `Command { std: "docker" "start" "-a" "286095df5aa5a229fd46a45bf7dec94d5d6f8a630b071e1fef7ef008a321c181", kill_on_drop: false }`
[INFO] [stderr]    Compiling jpeg-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try!(file.read_to_end(&mut bytes));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/jpeg/mod.rs:421:25
[INFO] [stdout]     |
[INFO] [stdout] 417 |                         return Ok(image);
[INFO] [stdout]     |                         ---------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 421 |                         i += bytes_read + bytes_skipped;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_y`
[INFO] [stdout]    --> src/jpeg/decoder.rs:260:31
[INFO] [stdout]     |
[INFO] [stdout] 260 |                 |x, y, max_x, max_y, x_factor, y_factor, max_x_factor, max_y_factor| {
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_max_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_factor`
[INFO] [stdout]    --> src/jpeg/decoder.rs:187:13
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let block_factor = max_block_hori_scale * max_block_vert_scale;
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_factor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_i`
[INFO] [stdout]    --> src/jpeg/decoder.rs:366:21
[INFO] [stdout]     |
[INFO] [stdout] 366 |                 let max_i = stride - start_x;
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_max_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `version`
[INFO] [stdout]   --> src/jpeg/mod.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     version: JFIFVersion,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `units`
[INFO] [stdout]   --> src/jpeg/mod.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     units: JFIFUnits,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pixel_density`
[INFO] [stdout]   --> src/jpeg/mod.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pixel_density: (u16, u16),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `thumbnail_dimensions`
[INFO] [stdout]   --> src/jpeg/mod.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     thumbnail_dimensions: ThumbnailDimensions,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sample_precision`
[INFO] [stdout]   --> src/jpeg/mod.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     sample_precision: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_lines`
[INFO] [stdout]   --> src/jpeg/mod.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     num_lines: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `samples_per_line`
[INFO] [stdout]   --> src/jpeg/mod.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     samples_per_line: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `image_components`
[INFO] [stdout]   --> src/jpeg/mod.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     image_components: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/jpeg/mod.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num_components`
[INFO] [stdout]    --> src/jpeg/mod.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     num_components: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start_spectral_selection`
[INFO] [stdout]    --> src/jpeg/mod.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     start_spectral_selection: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end_spectral_selection`
[INFO] [stdout]    --> src/jpeg/mod.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     end_spectral_selection: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `successive_approximation_bit_pos_high`
[INFO] [stdout]    --> src/jpeg/mod.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 126 |     successive_approximation_bit_pos_high: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `successive_approximation_bit_pos_low`
[INFO] [stdout]    --> src/jpeg/mod.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     successive_approximation_bit_pos_low: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/jpeg/mod.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `BlockSlice`
[INFO] [stdout]   --> src/jpeg/decoder.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | type BlockSlice = [f32];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "286095df5aa5a229fd46a45bf7dec94d5d6f8a630b071e1fef7ef008a321c181", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "286095df5aa5a229fd46a45bf7dec94d5d6f8a630b071e1fef7ef008a321c181", kill_on_drop: false }`
[INFO] [stdout] 286095df5aa5a229fd46a45bf7dec94d5d6f8a630b071e1fef7ef008a321c181
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 38a5078d4d197fc6eb03305d8f30b45d5654e8110d66b1213cd76518cce2a1a7
[INFO] running `Command { std: "docker" "start" "-a" "38a5078d4d197fc6eb03305d8f30b45d5654e8110d66b1213cd76518cce2a1a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         try!(file.read_to_end(&mut bytes));
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/jpeg/mod.rs:421:25
[INFO] [stderr]     |
[INFO] [stderr] 417 |                         return Ok(image);
[INFO] [stderr]     |                         ---------------- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 421 |                         i += bytes_read + bytes_skipped;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `max_y`
[INFO] [stderr]    --> src/jpeg/decoder.rs:260:31
[INFO] [stderr]     |
[INFO] [stderr] 260 |                 |x, y, max_x, max_y, x_factor, y_factor, max_x_factor, max_y_factor| {
[INFO] [stderr]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_max_y`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `block_factor`
[INFO] [stderr]    --> src/jpeg/decoder.rs:187:13
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let block_factor = max_block_hori_scale * max_block_vert_scale;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_factor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `max_i`
[INFO] [stderr]    --> src/jpeg/decoder.rs:366:21
[INFO] [stderr]     |
[INFO] [stderr] 366 |                 let max_i = stride - start_x;
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_max_i`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `version`
[INFO] [stderr]   --> src/jpeg/mod.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     version: JFIFVersion,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/jpeg/mod.rs:58:10
[INFO] [stderr]    |
[INFO] [stderr] 58 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `units`
[INFO] [stderr]   --> src/jpeg/mod.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     units: JFIFUnits,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/jpeg/mod.rs:58:10
[INFO] [stderr]    |
[INFO] [stderr] 58 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pixel_density`
[INFO] [stderr]   --> src/jpeg/mod.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pixel_density: (u16, u16),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/jpeg/mod.rs:58:10
[INFO] [stderr]    |
[INFO] [stderr] 58 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `thumbnail_dimensions`
[INFO] [stderr]   --> src/jpeg/mod.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     thumbnail_dimensions: ThumbnailDimensions,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `JPEGImage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/jpeg/mod.rs:58:10
[INFO] [stderr]    |
[INFO] [stderr] 58 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sample_precision`
[INFO] [stderr]   --> src/jpeg/mod.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     sample_precision: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/jpeg/mod.rs:89:10
[INFO] [stderr]    |
[INFO] [stderr] 89 | #[derive(Debug, Clone)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `num_lines`
[INFO] [stderr]   --> src/jpeg/mod.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     num_lines: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/jpeg/mod.rs:89:10
[INFO] [stderr]    |
[INFO] [stderr] 89 | #[derive(Debug, Clone)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `samples_per_line`
[INFO] [stderr]   --> src/jpeg/mod.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     samples_per_line: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/jpeg/mod.rs:89:10
[INFO] [stderr]    |
[INFO] [stderr] 89 | #[derive(Debug, Clone)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `image_components`
[INFO] [stderr]   --> src/jpeg/mod.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     image_components: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `FrameHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/jpeg/mod.rs:89:10
[INFO] [stderr]    |
[INFO] [stderr] 89 | #[derive(Debug, Clone)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `num_components`
[INFO] [stderr]    --> src/jpeg/mod.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     num_components: u8,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/jpeg/mod.rs:115:10
[INFO] [stderr]     |
[INFO] [stderr] 115 | #[derive(Debug, Clone)]
[INFO] [stderr]     |          ^^^^^  ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `start_spectral_selection`
[INFO] [stderr]    --> src/jpeg/mod.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     start_spectral_selection: u8,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/jpeg/mod.rs:115:10
[INFO] [stderr]     |
[INFO] [stderr] 115 | #[derive(Debug, Clone)]
[INFO] [stderr]     |          ^^^^^  ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `end_spectral_selection`
[INFO] [stderr]    --> src/jpeg/mod.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     end_spectral_selection: u8,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/jpeg/mod.rs:115:10
[INFO] [stderr]     |
[INFO] [stderr] 115 | #[derive(Debug, Clone)]
[INFO] [stderr]     |          ^^^^^  ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `successive_approximation_bit_pos_high`
[INFO] [stderr]    --> src/jpeg/mod.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     successive_approximation_bit_pos_high: u8,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/jpeg/mod.rs:115:10
[INFO] [stderr]     |
[INFO] [stderr] 115 | #[derive(Debug, Clone)]
[INFO] [stderr]     |          ^^^^^  ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `successive_approximation_bit_pos_low`
[INFO] [stderr]    --> src/jpeg/mod.rs:128:5
[INFO] [stderr]     |
[INFO] [stderr] 128 |     successive_approximation_bit_pos_low: u8,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ScanHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/jpeg/mod.rs:115:10
[INFO] [stderr]     |
[INFO] [stderr] 115 | #[derive(Debug, Clone)]
[INFO] [stderr]     |          ^^^^^  ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `BlockSlice`
[INFO] [stderr]   --> src/jpeg/decoder.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | type BlockSlice = [f32];
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `jpeg-rust` (bin "jpeg-rust" test) generated 19 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 43.18s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/jpeg_rust-9d6a204ba70b4835)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "38a5078d4d197fc6eb03305d8f30b45d5654e8110d66b1213cd76518cce2a1a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38a5078d4d197fc6eb03305d8f30b45d5654e8110d66b1213cd76518cce2a1a7", kill_on_drop: false }`
[INFO] [stdout] 38a5078d4d197fc6eb03305d8f30b45d5654e8110d66b1213cd76518cce2a1a7