[INFO] cloning repository https://github.com/caspianmerlin/png_me
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/caspianmerlin/png_me" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaspianmerlin%2Fpng_me", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaspianmerlin%2Fpng_me'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a87432979a24176ef6d630941596e01ac7d3b25
[INFO] testing caspianmerlin/png_me against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaspianmerlin%2Fpng_me" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/caspianmerlin/png_me on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/caspianmerlin/png_me
[INFO] finished tweaking git repo https://github.com/caspianmerlin/png_me
[INFO] tweaked toml for git repo https://github.com/caspianmerlin/png_me written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/caspianmerlin/png_me already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dac1cb9d6367c78f916fd073a68eaf3e169a3ff6800bc470df3d5d1997530d94
[INFO] running `Command { std: "docker" "start" "-a" "dac1cb9d6367c78f916fd073a68eaf3e169a3ff6800bc470df3d5d1997530d94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dac1cb9d6367c78f916fd073a68eaf3e169a3ff6800bc470df3d5d1997530d94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dac1cb9d6367c78f916fd073a68eaf3e169a3ff6800bc470df3d5d1997530d94", kill_on_drop: false }`
[INFO] [stdout] dac1cb9d6367c78f916fd073a68eaf3e169a3ff6800bc470df3d5d1997530d94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4bb99f4238aa212c175e31a1786f8b9720d24f44b3547c82021de0d49cc80a7
[INFO] running `Command { std: "docker" "start" "-a" "e4bb99f4238aa212c175e31a1786f8b9720d24f44b3547c82021de0d49cc80a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling crc-catalog v1.1.1
[INFO] [stderr]    Compiling crc v2.1.0
[INFO] [stderr]    Compiling png_me v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/args.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::{Error, Result};
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/chunk.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::Read, error::Error, fmt::{Display, Formatter}};
[INFO] [stdout]   |                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `process::Command`
[INFO] [stdout]  --> src/commands.rs:1:144
[INFO] [stdout]   |
[INFO] [stdout] 1 | ...ader, Read, Write}, fs::{File, OpenOptions}, str::FromStr, process::Command};
[INFO] [stdout]   |                                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/commands.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     match command_args {
[INFO] [stdout] 32 | |         PngMeArgs::Encode(args) => {
[INFO] [stdout] 33 | |             return match encode(args) {
[INFO] [stdout] 34 | |                 Ok(_) => Ok(()),
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |         }
[INFO] [stdout] 62 | |     };
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 63 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/chunk.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::Read, error::Error, fmt::{Display, Formatter}};
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_valid`
[INFO] [stdout]   --> src/chunk_type.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn is_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_critical`
[INFO] [stdout]   --> src/chunk_type.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn is_critical(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_public`
[INFO] [stdout]   --> src/chunk_type.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn is_public(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_reserved_bit_valid`
[INFO] [stdout]   --> src/chunk_type.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn is_reserved_bit_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_safe_to_copy`
[INFO] [stdout]   --> src/chunk_type.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn is_safe_to_copy(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SyntaxError`
[INFO] [stdout]  --> src/commands.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     SyntaxError,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `CommandError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/commands.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[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: variant is never constructed: `OtherError`
[INFO] [stdout]   --> src/commands.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     OtherError,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `CommandError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/commands.rs:6:10
[INFO] [stdout]    |
[INFO] [stdout] 6  | #[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: associated function is never used: `header`
[INFO] [stdout]   --> src/png.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn header(&self) -> &[u8; 8] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/commands.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     reader.read_to_end(&mut buffer);
[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: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `Command { std: "docker" "inspect" "e4bb99f4238aa212c175e31a1786f8b9720d24f44b3547c82021de0d49cc80a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4bb99f4238aa212c175e31a1786f8b9720d24f44b3547c82021de0d49cc80a7", kill_on_drop: false }`
[INFO] [stdout] e4bb99f4238aa212c175e31a1786f8b9720d24f44b3547c82021de0d49cc80a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1b7a407bd711743ba07f6fe478c2f7629f8421449abc139294b963b1d5c684a
[INFO] running `Command { std: "docker" "start" "-a" "c1b7a407bd711743ba07f6fe478c2f7629f8421449abc139294b963b1d5c684a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling png_me v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/args.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::{Error, Result};
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/chunk.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::Read, error::Error, fmt::{Display, Formatter}};
[INFO] [stdout]   |                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `process::Command`
[INFO] [stdout]  --> src/commands.rs:1:144
[INFO] [stdout]   |
[INFO] [stdout] 1 | ...ader, Read, Write}, fs::{File, OpenOptions}, str::FromStr, process::Command};
[INFO] [stdout]   |                                                               ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromStr` is imported redundantly
[INFO] [stdout]    --> src/png.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |     use std::str::FromStr;
[INFO] [stdout]     |         ----------------- the item `FromStr` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 152 |         use std::str::FromStr;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/commands.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     match command_args {
[INFO] [stdout] 32 | |         PngMeArgs::Encode(args) => {
[INFO] [stdout] 33 | |             return match encode(args) {
[INFO] [stdout] 34 | |                 Ok(_) => Ok(()),
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |         }
[INFO] [stdout] 62 | |     };
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 63 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Read`
[INFO] [stdout]  --> src/chunk.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::Read, error::Error, fmt::{Display, Formatter}};
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]    --> src/png.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     use std::str::FromStr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SyntaxError`
[INFO] [stdout]  --> src/commands.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     SyntaxError,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `CommandError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/commands.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[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: variant is never constructed: `OtherError`
[INFO] [stdout]   --> src/commands.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     OtherError,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `CommandError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/commands.rs:6:10
[INFO] [stdout]    |
[INFO] [stdout] 6  | #[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: associated function is never used: `header`
[INFO] [stdout]   --> src/png.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn header(&self) -> &[u8; 8] {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/commands.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     reader.read_to_end(&mut buffer);
[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: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/png_me-8f8716c39b5575ac)
[INFO] running `Command { std: "docker" "inspect" "c1b7a407bd711743ba07f6fe478c2f7629f8421449abc139294b963b1d5c684a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1b7a407bd711743ba07f6fe478c2f7629f8421449abc139294b963b1d5c684a", kill_on_drop: false }`
[INFO] [stdout] c1b7a407bd711743ba07f6fe478c2f7629f8421449abc139294b963b1d5c684a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 603cce6f7fade91cefcc676ce4b4404aee67bfac17921d4d55011bb0f6d38050
[INFO] running `Command { std: "docker" "start" "-a" "603cce6f7fade91cefcc676ce4b4404aee67bfac17921d4d55011bb0f6d38050", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/args.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::{Error, Result};
[INFO] [stderr]   |             ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error::Error`
[INFO] [stderr]  --> src/chunk.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{io::Read, error::Error, fmt::{Display, Formatter}};
[INFO] [stderr]   |                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `process::Command`
[INFO] [stderr]  --> src/commands.rs:1:144
[INFO] [stderr]   |
[INFO] [stderr] 1 | ...ader, Read, Write}, fs::{File, OpenOptions}, str::FromStr, process::Command};
[INFO] [stderr]   |                                                               ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `FromStr` is imported redundantly
[INFO] [stderr]    --> src/png.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 133 |     use std::str::FromStr;
[INFO] [stderr]     |         ----------------- the item `FromStr` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 152 |         use std::str::FromStr;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/commands.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 31 | /     match command_args {
[INFO] [stderr] 32 | |         PngMeArgs::Encode(args) => {
[INFO] [stderr] 33 | |             return match encode(args) {
[INFO] [stderr] 34 | |                 Ok(_) => Ok(()),
[INFO] [stderr] ...  |
[INFO] [stderr] 61 | |         }
[INFO] [stderr] 62 | |     };
[INFO] [stderr]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] 63 |       Ok(())
[INFO] [stderr]    |       ^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `io::Read`
[INFO] [stderr]  --> src/chunk.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{io::Read, error::Error, fmt::{Display, Formatter}};
[INFO] [stderr]   |           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]    --> src/png.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 |     use std::str::FromStr;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SyntaxError`
[INFO] [stderr]  --> src/commands.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     SyntaxError,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `CommandError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/commands.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[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: variant is never constructed: `OtherError`
[INFO] [stderr]   --> src/commands.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     OtherError,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `CommandError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/commands.rs:6:10
[INFO] [stderr]    |
[INFO] [stderr] 6  | #[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: associated function is never used: `header`
[INFO] [stderr]   --> src/png.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn header(&self) -> &[u8; 8] {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/commands.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 |     reader.read_to_end(&mut buffer);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `png_me` (bin "png_me" test) generated 11 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/png_me-8f8716c39b5575ac)
[INFO] [stdout] 
[INFO] [stdout] running 33 tests
[INFO] [stdout] test chunk::tests::test_chunk_length ... ok
[INFO] [stdout] test chunk::tests::test_chunk_string ... ok
[INFO] [stdout] test chunk::tests::test_chunk_crc ... ok
[INFO] [stdout] test chunk::tests::test_chunk_trait_impls ... ok
[INFO] [stdout] test chunk::tests::test_chunk_type ... ok
[INFO] [stdout] test chunk::tests::test_invalid_chunk_from_bytes ... ok
[INFO] [stdout] test chunk::tests::test_new_chunk ... ok
[INFO] [stdout] test chunk::tests::test_valid_chunk_from_bytes ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_from_bytes ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_from_str ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_is_critical ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_is_not_critical ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_is_not_public ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_is_public ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_is_reserved_bit_invalid ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_is_reserved_bit_valid ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_is_safe_to_copy ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_is_unsafe_to_copy ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_trait_impls ... ok
[INFO] [stdout] test chunk_type::tests::test_chunk_type_string ... ok
[INFO] [stdout] test chunk_type::tests::test_invalid_chunk_is_valid ... ok
[INFO] [stdout] test chunk_type::tests::test_valid_chunk_is_valid ... ok
[INFO] [stdout] test png::tests::test_append_chunk ... ok
[INFO] [stdout] test png::tests::test_chunk_by_type ... ok
[INFO] [stdout] test png::tests::test_from_chunks ... ok
[INFO] [stdout] test png::tests::test_invalid_chunk ... ok
[INFO] [stdout] test png::tests::test_list_chunks ... ok
[INFO] [stdout] test png::tests::test_remove_chunk ... ok
[INFO] [stdout] test png::tests::test_png_trait_impls ... ok
[INFO] [stdout] test png::tests::test_valid_from_bytes ... ok
[INFO] [stdout] test png::tests::test_png_from_image_file ... ok
[INFO] [stdout] test png::tests::test_as_bytes ... ok
[INFO] [stdout] test png::tests::test_invalid_header ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 33 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "603cce6f7fade91cefcc676ce4b4404aee67bfac17921d4d55011bb0f6d38050", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "603cce6f7fade91cefcc676ce4b4404aee67bfac17921d4d55011bb0f6d38050", kill_on_drop: false }`
[INFO] [stdout] 603cce6f7fade91cefcc676ce4b4404aee67bfac17921d4d55011bb0f6d38050