[INFO] cloning repository https://github.com/iluvpy/png-parse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iluvpy/png-parse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filuvpy%2Fpng-parse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filuvpy%2Fpng-parse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b3f5c1d5a42857ccdcb85d0e21b786d02e8a7b2
[INFO] checking iluvpy/png-parse against master#85c39893a761fe4c050523278da4e7e45ab42b6e for pr-134688-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filuvpy%2Fpng-parse" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iluvpy/png-parse on toolchain 85c39893a761fe4c050523278da4e7e45ab42b6e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+85c39893a761fe4c050523278da4e7e45ab42b6e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iluvpy/png-parse
[INFO] finished tweaking git repo https://github.com/iluvpy/png-parse
[INFO] tweaked toml for git repo https://github.com/iluvpy/png-parse written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/iluvpy/png-parse 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" "+85c39893a761fe4c050523278da4e7e45ab42b6e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+85c39893a761fe4c050523278da4e7e45ab42b6e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd3dca1d09c0d3e8912a7dbc22963aa323607ce8221037f2a78a29bc3b8167f9
[INFO] running `Command { std: "docker" "start" "-a" "fd3dca1d09c0d3e8912a7dbc22963aa323607ce8221037f2a78a29bc3b8167f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd3dca1d09c0d3e8912a7dbc22963aa323607ce8221037f2a78a29bc3b8167f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd3dca1d09c0d3e8912a7dbc22963aa323607ce8221037f2a78a29bc3b8167f9", kill_on_drop: false }`
[INFO] [stdout] fd3dca1d09c0d3e8912a7dbc22963aa323607ce8221037f2a78a29bc3b8167f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+85c39893a761fe4c050523278da4e7e45ab42b6e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df1d76160f882db62767e89150c140b753ec79d8bffb400d6bd34cdf0dc5b440
[INFO] running `Command { std: "docker" "start" "-a" "df1d76160f882db62767e89150c140b753ec79d8bffb400d6bd34cdf0dc5b440", kill_on_drop: false }`
[INFO] [stderr]     Checking png-parse v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `buffer` is never read
[INFO] [stdout]  --> src/png.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct PNGFile {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 7 |     pub buffer: Vec<u8>,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `buffer` is never read
[INFO] [stdout]  --> src/png.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct PNGFile {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 7 |     pub buffer: Vec<u8>,
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "df1d76160f882db62767e89150c140b753ec79d8bffb400d6bd34cdf0dc5b440", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df1d76160f882db62767e89150c140b753ec79d8bffb400d6bd34cdf0dc5b440", kill_on_drop: false }`
[INFO] [stdout] df1d76160f882db62767e89150c140b753ec79d8bffb400d6bd34cdf0dc5b440