[INFO] fetching crate libwebp-sys 0.3.0...
[INFO] checking libwebp-sys-0.3.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate libwebp-sys 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate libwebp-sys 0.3.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libwebp-sys 0.3.0
[INFO] finished tweaking crates.io crate libwebp-sys 0.3.0
[INFO] tweaked toml for crates.io crate libwebp-sys 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00dfffbf6be7ef94b0327c2ac536eb56c599cc39f57bdd8fcc64a650e1e5beb4
[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" "00dfffbf6be7ef94b0327c2ac536eb56c599cc39f57bdd8fcc64a650e1e5beb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00dfffbf6be7ef94b0327c2ac536eb56c599cc39f57bdd8fcc64a650e1e5beb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00dfffbf6be7ef94b0327c2ac536eb56c599cc39f57bdd8fcc64a650e1e5beb4", kill_on_drop: false }`
[INFO] [stdout] 00dfffbf6be7ef94b0327c2ac536eb56c599cc39f57bdd8fcc64a650e1e5beb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] dd0ce7b7610eea1a82e67b5abd2c582ae31ea4336995971043b6769779e0cd35
[INFO] running `Command { std: "docker" "start" "-a" "dd0ce7b7610eea1a82e67b5abd2c582ae31ea4336995971043b6769779e0cd35", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling libwebp-sys v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let len = File::open("./tests/test1.webp").unwrap().read_to_end(&mut buf).unwrap();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.32s
[INFO] running `Command { std: "docker" "inspect" "dd0ce7b7610eea1a82e67b5abd2c582ae31ea4336995971043b6769779e0cd35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd0ce7b7610eea1a82e67b5abd2c582ae31ea4336995971043b6769779e0cd35", kill_on_drop: false }`
[INFO] [stdout] dd0ce7b7610eea1a82e67b5abd2c582ae31ea4336995971043b6769779e0cd35