[INFO] cloning repository https://github.com/psychon/pngme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/psychon/pngme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsychon%2Fpngme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsychon%2Fpngme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30fa1203ee8d5bd35694788e19dd8cf3baa564c2
[INFO] checking psychon/pngme against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsychon%2Fpngme" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/psychon/pngme
[INFO] finished tweaking git repo https://github.com/psychon/pngme
[INFO] tweaked toml for git repo https://github.com/psychon/pngme written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/psychon/pngme on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/psychon/pngme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9c80365320f40e669c4b53a6bec79c429195b04e69ebce7ee28879c1e03e9e7
[INFO] running `Command { std: "docker" "start" "-a" "d9c80365320f40e669c4b53a6bec79c429195b04e69ebce7ee28879c1e03e9e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9c80365320f40e669c4b53a6bec79c429195b04e69ebce7ee28879c1e03e9e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9c80365320f40e669c4b53a6bec79c429195b04e69ebce7ee28879c1e03e9e7", kill_on_drop: false }`
[INFO] [stdout] d9c80365320f40e669c4b53a6bec79c429195b04e69ebce7ee28879c1e03e9e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82defe67a89332aba34be8284721c401ad9bb6b20aeaec9f24364bcc1414f018
[INFO] running `Command { std: "docker" "start" "-a" "82defe67a89332aba34be8284721c401ad9bb6b20aeaec9f24364bcc1414f018", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]     Checking pngme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TryInto`
[INFO] [stdout]  --> src/png.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryInto`
[INFO] [stdout]  --> src/png.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::{TryFrom, TryInto};
[INFO] [stdout]   |                             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]   --> src/png.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     use std::str::FromStr;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/png.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file`, `chunk_name`, `message`, and `output_file` are never read
[INFO] [stdout]   --> src/args.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  9 |     Encode {
[INFO] [stdout]    |     ------ fields in this variant
[INFO] [stdout] 10 |         file: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 11 |         chunk_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 12 |         message: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 13 |         output_file: Option<PathBuf>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Command` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file` and `chunk_name` are never read
[INFO] [stdout]   --> src/args.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Decode {
[INFO] [stdout]    |     ------ fields in this variant
[INFO] [stdout] 17 |         file: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 18 |         chunk_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Command` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file` and `chunk_name` are never read
[INFO] [stdout]   --> src/args.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Remove {
[INFO] [stdout]    |     ------ fields in this variant
[INFO] [stdout] 22 |         file: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 23 |         chunk_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Command` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file` is never read
[INFO] [stdout]   --> src/args.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Print {
[INFO] [stdout]    |     ----- field in this variant
[INFO] [stdout] 27 |         file: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Command` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Chunk` is never constructed
[INFO] [stdout]   --> src/chunk.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Chunk {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/chunk.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Chunk {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 16 |     pub fn new(chunk_type: ChunkType, data: Vec<u8>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn length(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn chunk_type(&self) -> &ChunkType {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn data(&self) -> &[u8] {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn data_as_string(&self) -> Result<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn crc(&self) -> u32 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn as_bytes(&self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub fn parse_next(value: &[u8]) -> Result<(Self, &[u8])> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ChunkType` is never constructed
[INFO] [stdout]  --> src/chunk_type.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct ChunkType([u8; 4]);
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `valid_chunk_character` is never used
[INFO] [stdout]   --> src/chunk_type.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn valid_chunk_character(value: u8) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_lowercase` is never used
[INFO] [stdout]   --> src/chunk_type.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn is_lowercase(value: u8) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/chunk_type.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl ChunkType {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 21 |     pub fn new(value: [u8; 4]) -> Result<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn bytes(&self) -> &[u8; 4] {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn is_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn is_critical(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn is_public(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn is_reserved_bit_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn is_safe_to_copy(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `crc_table` is never used
[INFO] [stdout]  --> src/crc.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn crc_table(n: u8) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Crc` is never constructed
[INFO] [stdout]   --> src/crc.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Crc(u32);
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, `update_byte`, and `update` are never used
[INFO] [stdout]   --> src/crc.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Crc {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 19 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn get(&self) -> u32 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn update_byte(&self, byte: u8) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn update(&self, data: &[u8]) -> Self {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Png` is never constructed
[INFO] [stdout]   --> src/png.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Png {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/png.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Png {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 15 |     const STANDARD_HEADER: [u8; 8] = [137, 80, 78, 71, 13, 10, 26, 10];
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 16 |
[INFO] [stdout] 17 |     pub fn from_chunks(chunks: Vec<Chunk>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub fn append_chunk(&mut self, chunk: Chunk) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn remove_chunk(&mut self, chunk_type: &str) -> Result<Chunk> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn header(&self) -> &[u8; 8] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn chunks(&self) -> &[Chunk] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn chunk_by_type(&self, chunk_type: &str) -> Option<&Chunk> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     pub fn as_bytes(&self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/png.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file`, `chunk_name`, `message`, and `output_file` are never read
[INFO] [stdout]   --> src/args.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  9 |     Encode {
[INFO] [stdout]    |     ------ fields in this variant
[INFO] [stdout] 10 |         file: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 11 |         chunk_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 12 |         message: String,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 13 |         output_file: Option<PathBuf>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Command` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file` and `chunk_name` are never read
[INFO] [stdout]   --> src/args.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Decode {
[INFO] [stdout]    |     ------ fields in this variant
[INFO] [stdout] 17 |         file: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 18 |         chunk_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Command` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file` and `chunk_name` are never read
[INFO] [stdout]   --> src/args.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Remove {
[INFO] [stdout]    |     ------ fields in this variant
[INFO] [stdout] 22 |         file: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 23 |         chunk_name: String,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Command` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file` is never read
[INFO] [stdout]   --> src/args.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Print {
[INFO] [stdout]    |     ----- field in this variant
[INFO] [stdout] 27 |         file: PathBuf,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Command` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `data` is never used
[INFO] [stdout]   --> src/chunk.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Chunk {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn data(&self) -> &[u8] {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `header` is never used
[INFO] [stdout]   --> src/png.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Png {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn header(&self) -> &[u8; 8] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.18s
[INFO] running `Command { std: "docker" "inspect" "82defe67a89332aba34be8284721c401ad9bb6b20aeaec9f24364bcc1414f018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82defe67a89332aba34be8284721c401ad9bb6b20aeaec9f24364bcc1414f018", kill_on_drop: false }`
[INFO] [stdout] 82defe67a89332aba34be8284721c401ad9bb6b20aeaec9f24364bcc1414f018