[INFO] fetching crate wkhtmltopdf 0.4.0...
[INFO] checking wkhtmltopdf-0.4.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate wkhtmltopdf 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate wkhtmltopdf 0.4.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wkhtmltopdf 0.4.0
[INFO] finished tweaking crates.io crate wkhtmltopdf 0.4.0
[INFO] tweaked toml for crates.io crate wkhtmltopdf 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate wkhtmltopdf 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded url v2.1.1
[INFO] [stderr]   Downloaded hermit-abi v0.1.13
[INFO] [stderr]   Downloaded thread-id v3.3.0
[INFO] [stderr]   Downloaded unicode-bidi v0.3.4
[INFO] [stderr]   Downloaded aho-corasick v0.7.10
[INFO] [stderr]   Downloaded idna v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.71
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] [stderr]   Downloaded smallvec v1.4.0
[INFO] [stderr]   Downloaded unicode-normalization v0.1.12
[INFO] [stderr]   Downloaded wkhtmltox-sys v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0be4cc16217b3a29dd306eddbc9a2a62a4be4375ef6c8429e53effcc950b8993
[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" "0be4cc16217b3a29dd306eddbc9a2a62a4be4375ef6c8429e53effcc950b8993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0be4cc16217b3a29dd306eddbc9a2a62a4be4375ef6c8429e53effcc950b8993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0be4cc16217b3a29dd306eddbc9a2a62a4be4375ef6c8429e53effcc950b8993", kill_on_drop: false }`
[INFO] [stdout] 0be4cc16217b3a29dd306eddbc9a2a62a4be4375ef6c8429e53effcc950b8993
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e52d7ee5b5f949a89607a06fecb2d2be6c9a9c378ebfd2689a02c5bc3bc55687
[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" "e52d7ee5b5f949a89607a06fecb2d2be6c9a9c378ebfd2689a02c5bc3bc55687", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking wkhtmltox-sys v0.1.2
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking wkhtmltopdf v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `needs_delete`
[INFO] [stdout]   --> src/image/lowlevel.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     needs_delete: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `needs_delete`
[INFO] [stdout]   --> src/image/lowlevel.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     needs_delete: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 7.44s
[INFO] running `Command { std: "docker" "inspect" "e52d7ee5b5f949a89607a06fecb2d2be6c9a9c378ebfd2689a02c5bc3bc55687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e52d7ee5b5f949a89607a06fecb2d2be6c9a9c378ebfd2689a02c5bc3bc55687", kill_on_drop: false }`
[INFO] [stdout] e52d7ee5b5f949a89607a06fecb2d2be6c9a9c378ebfd2689a02c5bc3bc55687