[INFO] cloning repository https://github.com/Lutetium-Vanadium/viu-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lutetium-Vanadium/viu-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLutetium-Vanadium%2Fviu-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLutetium-Vanadium%2Fviu-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42356413244b83934f6479b0059957e8f3658a48
[INFO] checking Lutetium-Vanadium/viu-rs against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLutetium-Vanadium%2Fviu-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lutetium-Vanadium/viu-rs on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lutetium-Vanadium/viu-rs
[INFO] finished tweaking git repo https://github.com/Lutetium-Vanadium/viu-rs
[INFO] tweaked toml for git repo https://github.com/Lutetium-Vanadium/viu-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Lutetium-Vanadium/viu-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cd5b1652370324bff589dc4d081aa30781de8cb58360e09a3d677120ae0c4666
[INFO] running `Command { std: "docker" "start" "-a" "cd5b1652370324bff589dc4d081aa30781de8cb58360e09a3d677120ae0c4666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd5b1652370324bff589dc4d081aa30781de8cb58360e09a3d677120ae0c4666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd5b1652370324bff589dc4d081aa30781de8cb58360e09a3d677120ae0c4666", kill_on_drop: false }`
[INFO] [stdout] cd5b1652370324bff589dc4d081aa30781de8cb58360e09a3d677120ae0c4666
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5ab27297d314a006f87cefb973526e02af782fee1c8d177272d6ac4efdcd9ac
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d5ab27297d314a006f87cefb973526e02af782fee1c8d177272d6ac4efdcd9ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking rle-decode-fast v1.0.1
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking viu-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::chunks::ancillary`
[INFO] [stdout]  --> src/png/parse_image.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::chunks::ancillary;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]   --> src/png/mod.rs:11:33
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::io::{Error, ErrorKind, Result};
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::chunks::ancillary`
[INFO] [stdout]  --> src/png/parse_image.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::chunks::ancillary;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]   --> src/png/mod.rs:11:33
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::io::{Error, ErrorKind, Result};
[INFO] [stdout]    |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pixel_size`
[INFO] [stdout]    --> src/png/chunks/ihdr.rs:139:12
[INFO] [stdout]     |
[INFO] [stdout] 139 |     pub fn pixel_size(&self) -> u8 {
[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: `pixel_size`
[INFO] [stdout]    --> src/png/chunks/ihdr.rs:139:12
[INFO] [stdout]     |
[INFO] [stdout] 139 |     pub fn pixel_size(&self) -> u8 {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.46s
[INFO] running `Command { std: "docker" "inspect" "d5ab27297d314a006f87cefb973526e02af782fee1c8d177272d6ac4efdcd9ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5ab27297d314a006f87cefb973526e02af782fee1c8d177272d6ac4efdcd9ac", kill_on_drop: false }`
[INFO] [stdout] d5ab27297d314a006f87cefb973526e02af782fee1c8d177272d6ac4efdcd9ac