[INFO] fetching crate libwebp-sys2 0.2.0...
[INFO] checking libwebp-sys2-0.2.0 against master#6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd for pr-153721
[INFO] extracting crate libwebp-sys2 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate libwebp-sys2 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate libwebp-sys2 0.2.0
[INFO] tweaked toml for crates.io crate libwebp-sys2 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate libwebp-sys2 0.2.0 on toolchain 6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate libwebp-sys2 0.2.0 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" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libwebp-sys2 v0.1.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 2ba82c73f67b251b491854ea7d9ddc6b2de8d46b40bd41508a6ac437031e04e0
[INFO] running `Command { std: "docker" "start" "2ba82c73f67b251b491854ea7d9ddc6b2de8d46b40bd41508a6ac437031e04e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2ba82c73f67b251b491854ea7d9ddc6b2de8d46b40bd41508a6ac437031e04e0" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ba82c73f67b251b491854ea7d9ddc6b2de8d46b40bd41508a6ac437031e04e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2ba82c73f67b251b491854ea7d9ddc6b2de8d46b40bd41508a6ac437031e04e0" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.15
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling libwebp-sys2 v0.1.11
[INFO] [stderr]    Compiling libwebp-sys2 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `WebPInitDecBuffer` that must be used
[INFO] [stdout]  --> tests/decode.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |         WebPInitDecBuffer(&mut buf);
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let _ = WebPInitDecBuffer(&mut buf);
[INFO] [stdout]   |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.63s
[INFO] running `Command { std: "docker" "inspect" "2ba82c73f67b251b491854ea7d9ddc6b2de8d46b40bd41508a6ac437031e04e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ba82c73f67b251b491854ea7d9ddc6b2de8d46b40bd41508a6ac437031e04e0", kill_on_drop: false }`
[INFO] [stdout] 2ba82c73f67b251b491854ea7d9ddc6b2de8d46b40bd41508a6ac437031e04e0