[INFO] fetching crate lodepng 3.12.2...
[INFO] checking lodepng-3.12.2 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate lodepng 3.12.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate lodepng 3.12.2
[INFO] finished tweaking crates.io crate lodepng 3.12.2
[INFO] tweaked toml for crates.io crate lodepng 3.12.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lodepng 3.12.2 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lodepng 3.12.2 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27d6293303cc08f9ca0efe83eb5e9608630f8aa2e9e8b8d030f50a5956734827
[INFO] running `Command { std: "docker" "start" "-a" "27d6293303cc08f9ca0efe83eb5e9608630f8aa2e9e8b8d030f50a5956734827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27d6293303cc08f9ca0efe83eb5e9608630f8aa2e9e8b8d030f50a5956734827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27d6293303cc08f9ca0efe83eb5e9608630f8aa2e9e8b8d030f50a5956734827", kill_on_drop: false }`
[INFO] [stdout] 27d6293303cc08f9ca0efe83eb5e9608630f8aa2e9e8b8d030f50a5956734827
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85fce7fc3a82dfaf6afc4b50209650403841a2a696a769d145b7210c8c2052c6
[INFO] running `Command { std: "docker" "start" "-a" "85fce7fc3a82dfaf6afc4b50209650403841a2a696a769d145b7210c8c2052c6", kill_on_drop: false }`
[INFO] [stderr]     Checking zlib-rs v0.5.1
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]     Checking bytemuck v1.23.1
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking crc32fast v1.4.2
[INFO] [stderr]     Checking rgb v0.8.50
[INFO] [stderr]     Checking libz-rs-sys v0.5.1
[INFO] [stderr]     Checking flate2 v1.1.2
[INFO] [stderr]     Checking lodepng v3.12.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `ChunkRefMut` is never constructed
[INFO] [stdout]     --> src/lib.rs:1338:12
[INFO] [stdout]      |
[INFO] [stdout] 1338 | pub struct ChunkRefMut<'a> {
[INFO] [stdout]      |            ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]      = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lodepng` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `ChunkRefMut` is never constructed
[INFO] [stdout]     --> src/lib.rs:1338:12
[INFO] [stdout]      |
[INFO] [stdout] 1338 | pub struct ChunkRefMut<'a> {
[INFO] [stdout]      |            ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]      = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lodepng` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "85fce7fc3a82dfaf6afc4b50209650403841a2a696a769d145b7210c8c2052c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85fce7fc3a82dfaf6afc4b50209650403841a2a696a769d145b7210c8c2052c6", kill_on_drop: false }`
[INFO] [stdout] 85fce7fc3a82dfaf6afc4b50209650403841a2a696a769d145b7210c8c2052c6
