[INFO] cloning repository https://github.com/Siiiimon/imageviewer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Siiiimon/imageviewer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiiiimon%2Fimageviewer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiiiimon%2Fimageviewer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bcd8a0d364c56e65c9861e62586783f62d6d8845
[INFO] testing Siiiimon/imageviewer against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSiiiimon%2Fimageviewer" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Siiiimon/imageviewer on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Siiiimon/imageviewer
[INFO] finished tweaking git repo https://github.com/Siiiimon/imageviewer
[INFO] tweaked toml for git repo https://github.com/Siiiimon/imageviewer written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/Siiiimon/imageviewer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d560b19f3b07ce8f47a021d4548da31f4d96c654cb33e4a5071a4e44129ae365
[INFO] running `Command { std: "docker" "start" "-a" "d560b19f3b07ce8f47a021d4548da31f4d96c654cb33e4a5071a4e44129ae365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d560b19f3b07ce8f47a021d4548da31f4d96c654cb33e4a5071a4e44129ae365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d560b19f3b07ce8f47a021d4548da31f4d96c654cb33e4a5071a4e44129ae365", kill_on_drop: false }`
[INFO] [stdout] d560b19f3b07ce8f47a021d4548da31f4d96c654cb33e4a5071a4e44129ae365
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8185d65d36004fc0c617e91452ef295ea94f28d092222086893982ff3e1c0ad4
[INFO] running `Command { std: "docker" "start" "-a" "8185d65d36004fc0c617e91452ef295ea94f28d092222086893982ff3e1c0ad4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling imageviewer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `checksum`
[INFO] [stdout]   --> src/png/chunk/mod.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let checksum = u32::from_be_bytes(buf);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_checksum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `content`
[INFO] [stdout]  --> src/png/chunk/types/iend.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn parse(mut content: Vec<u8>) -> Result<Box<dyn Chunky>, Box<dyn error::Error>> {
[INFO] [stdout]   |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_content`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/png/chunk/types/iend.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn parse(mut content: Vec<u8>) -> Result<Box<dyn Chunky>, Box<dyn error::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: variant is never constructed: `InvalidChunk`
[INFO] [stdout]   --> src/png/error.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     InvalidChunk(),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `ErrorKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/png/error.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[derive(Clone, Debug)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     width: u32,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[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: `height`
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     height: u32,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[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: `bit_depth`
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     bit_depth: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[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: `color_type`
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     color_type: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[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: `has_adam_interlace`
[INFO] [stdout]   --> src/png/chunk/types/ihdr.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     has_adam_interlace: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]    |
[INFO] [stdout] 4  | #[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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "8185d65d36004fc0c617e91452ef295ea94f28d092222086893982ff3e1c0ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8185d65d36004fc0c617e91452ef295ea94f28d092222086893982ff3e1c0ad4", kill_on_drop: false }`
[INFO] [stdout] 8185d65d36004fc0c617e91452ef295ea94f28d092222086893982ff3e1c0ad4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ce2f339266c2a6713971653386ac8f3bd6d98a0c775cb349c5c2ee53f9229bd
[INFO] running `Command { std: "docker" "start" "-a" "1ce2f339266c2a6713971653386ac8f3bd6d98a0c775cb349c5c2ee53f9229bd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling imageviewer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `checksum`
[INFO] [stdout]   --> src/png/chunk/mod.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let checksum = u32::from_be_bytes(buf);
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_checksum`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `content`
[INFO] [stdout]  --> src/png/chunk/types/iend.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn parse(mut content: Vec<u8>) -> Result<Box<dyn Chunky>, Box<dyn error::Error>> {
[INFO] [stdout]   |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_content`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/png/chunk/types/iend.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn parse(mut content: Vec<u8>) -> Result<Box<dyn Chunky>, Box<dyn error::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: variant is never constructed: `InvalidChunk`
[INFO] [stdout]   --> src/png/error.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     InvalidChunk(),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `ErrorKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/png/error.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[derive(Clone, Debug)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     width: u32,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[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: `height`
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     height: u32,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[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: `bit_depth`
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     bit_depth: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[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: `color_type`
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     color_type: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[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: `has_adam_interlace`
[INFO] [stdout]   --> src/png/chunk/types/ihdr.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     has_adam_interlace: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stdout]    |
[INFO] [stdout] 4  | #[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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.61s
[INFO] running `Command { std: "docker" "inspect" "1ce2f339266c2a6713971653386ac8f3bd6d98a0c775cb349c5c2ee53f9229bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ce2f339266c2a6713971653386ac8f3bd6d98a0c775cb349c5c2ee53f9229bd", kill_on_drop: false }`
[INFO] [stdout] 1ce2f339266c2a6713971653386ac8f3bd6d98a0c775cb349c5c2ee53f9229bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 883e168e9b9b88617e609a1109f91bd1f7b9efe28b90306e04bb3b3d8c9c2132
[INFO] running `Command { std: "docker" "start" "-a" "883e168e9b9b88617e609a1109f91bd1f7b9efe28b90306e04bb3b3d8c9c2132", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `checksum`
[INFO] [stderr]   --> src/png/chunk/mod.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |     let checksum = u32::from_be_bytes(buf);
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_checksum`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `content`
[INFO] [stderr]  --> src/png/chunk/types/iend.rs:8:18
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn parse(mut content: Vec<u8>) -> Result<Box<dyn Chunky>, Box<dyn error::Error>> {
[INFO] [stderr]   |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_content`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/png/chunk/types/iend.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn parse(mut content: Vec<u8>) -> Result<Box<dyn Chunky>, Box<dyn error::Error>> {
[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: variant is never constructed: `InvalidChunk`
[INFO] [stderr]   --> src/png/error.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     InvalidChunk(),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `ErrorKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/png/error.rs:19:10
[INFO] [stderr]    |
[INFO] [stderr] 19 | #[derive(Clone, Debug)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `width`
[INFO] [stderr]  --> src/png/chunk/types/ihdr.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     width: u32,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[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: `height`
[INFO] [stderr]  --> src/png/chunk/types/ihdr.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     height: u32,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[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: `bit_depth`
[INFO] [stderr]  --> src/png/chunk/types/ihdr.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     bit_depth: u8,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[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: `color_type`
[INFO] [stderr]  --> src/png/chunk/types/ihdr.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     color_type: u8,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[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: `has_adam_interlace`
[INFO] [stderr]   --> src/png/chunk/types/ihdr.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     has_adam_interlace: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Ihdr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/png/chunk/types/ihdr.rs:4:10
[INFO] [stderr]    |
[INFO] [stderr] 4  | #[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: `imageviewer` (bin "imageviewer" test) generated 9 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.20s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/imageviewer-a5222652350dcfb3)
[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" "883e168e9b9b88617e609a1109f91bd1f7b9efe28b90306e04bb3b3d8c9c2132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "883e168e9b9b88617e609a1109f91bd1f7b9efe28b90306e04bb3b3d8c9c2132", kill_on_drop: false }`
[INFO] [stdout] 883e168e9b9b88617e609a1109f91bd1f7b9efe28b90306e04bb3b3d8c9c2132