[INFO] cloning repository https://github.com/TimBush/Rust-Pixel-Diff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TimBush/Rust-Pixel-Diff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimBush%2FRust-Pixel-Diff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimBush%2FRust-Pixel-Diff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25e32e7fb6aa74f936820922b4c903d3750bd26b
[INFO] checking TimBush/Rust-Pixel-Diff against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTimBush%2FRust-Pixel-Diff" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TimBush/Rust-Pixel-Diff
[INFO] finished tweaking git repo https://github.com/TimBush/Rust-Pixel-Diff
[INFO] tweaked toml for git repo https://github.com/TimBush/Rust-Pixel-Diff written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TimBush/Rust-Pixel-Diff on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TimBush/Rust-Pixel-Diff 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6c9c441e965b6f1b58d4ca88896d47018112e94c12e35ff1335258981203302
[INFO] running `Command { std: "docker" "start" "-a" "a6c9c441e965b6f1b58d4ca88896d47018112e94c12e35ff1335258981203302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6c9c441e965b6f1b58d4ca88896d47018112e94c12e35ff1335258981203302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6c9c441e965b6f1b58d4ca88896d47018112e94c12e35ff1335258981203302", kill_on_drop: false }`
[INFO] [stdout] a6c9c441e965b6f1b58d4ca88896d47018112e94c12e35ff1335258981203302
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efff92eb53ff04c7f3941947a8d8542a497b2043e97ae2cb27beb20fd282223e
[INFO] running `Command { std: "docker" "start" "-a" "efff92eb53ff04c7f3941947a8d8542a497b2043e97ae2cb27beb20fd282223e", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]    Compiling libc v0.2.120
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.3
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking png v0.17.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking bytemuck v1.8.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.12
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking clap v3.1.6
[INFO] [stderr]     Checking image v0.24.1
[INFO] [stderr]     Checking png_diff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::fmt::Error;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::fmt::Error;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | /         /// File path of the first image
[INFO] [stdout] 13 | |         #[clap(short = 'f', long = "first-image", validator = validate_file_path)]
[INFO] [stdout] 14 | |         pub img1_name: String,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         /// File path of the second image
[INFO] [stdout] 17 | |         #[clap(short = 's', long = "second-image", validator = validate_file_path)]
[INFO] [stdout] 18 | |         pub img2_name: String,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | /         /// File path to where the output file should be placed.
[INFO] [stdout] 21 | |         #[clap(short = 'o', long = "output-dir")]
[INFO] [stdout] 22 | |         pub output_dir: String,
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | /         /// File path of the first image
[INFO] [stdout] 13 | |         #[clap(short = 'f', long = "first-image", validator = validate_file_path)]
[INFO] [stdout] 14 | |         pub img1_name: String,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | /         /// File path of the second image
[INFO] [stdout] 17 | |         #[clap(short = 's', long = "second-image", validator = validate_file_path)]
[INFO] [stdout] 18 | |         pub img2_name: String,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | /         /// File path to where the output file should be placed.
[INFO] [stdout] 21 | |         #[clap(short = 'o', long = "output-dir")]
[INFO] [stdout] 22 | |         pub output_dir: String,
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `png_diff` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `png_diff` (lib) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "efff92eb53ff04c7f3941947a8d8542a497b2043e97ae2cb27beb20fd282223e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efff92eb53ff04c7f3941947a8d8542a497b2043e97ae2cb27beb20fd282223e", kill_on_drop: false }`
[INFO] [stdout] efff92eb53ff04c7f3941947a8d8542a497b2043e97ae2cb27beb20fd282223e