[INFO] fetching crate pdf-extract 0.6.2...
[INFO] checking pdf-extract-0.6.2 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate pdf-extract 0.6.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate pdf-extract 0.6.2 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pdf-extract 0.6.2
[INFO] finished tweaking crates.io crate pdf-extract 0.6.2
[INFO] tweaked toml for crates.io crate pdf-extract 0.6.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate pdf-extract 0.6.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded miniz-sys v0.1.10
[INFO] [stderr]   Downloaded flate2 v1.0.3
[INFO] [stderr]   Downloaded num-integer v0.1.38
[INFO] [stderr]   Downloaded lopdf v0.24.0
[INFO] [stderr]   Downloaded pom v3.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", 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] 438904d4a2b109122c7223d0c407de7f3203294865a8ab97992d8d67ecc950b2
[INFO] running `Command { std: "docker" "start" "-a" "438904d4a2b109122c7223d0c407de7f3203294865a8ab97992d8d67ecc950b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "438904d4a2b109122c7223d0c407de7f3203294865a8ab97992d8d67ecc950b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "438904d4a2b109122c7223d0c407de7f3203294865a8ab97992d8d67ecc950b2", kill_on_drop: false }`
[INFO] [stdout] 438904d4a2b109122c7223d0c407de7f3203294865a8ab97992d8d67ecc950b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b1174ac519b61e146807c1b8d728c0e91e54e1d2ea01d3b75d1f5a73bfa6e7a
[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" "9b1174ac519b61e146807c1b8d728c0e91e54e1d2ea01d3b75d1f5a73bfa6e7a", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking pom v1.1.0
[INFO] [stderr]     Checking pom v3.0.2
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]     Checking postscript v0.11.1
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking euclid v0.20.7
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking adobe-cmap-parser v0.3.3
[INFO] [stderr]     Checking type1-encoding-parser v0.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking flate2 v1.0.3
[INFO] [stderr]     Checking lopdf v0.24.0
[INFO] [stderr]     Checking pdf-extract v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> examples/extract.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     output_doc(&doc, output.as_mut());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.53s
[INFO] running `Command { std: "docker" "inspect" "9b1174ac519b61e146807c1b8d728c0e91e54e1d2ea01d3b75d1f5a73bfa6e7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b1174ac519b61e146807c1b8d728c0e91e54e1d2ea01d3b75d1f5a73bfa6e7a", kill_on_drop: false }`
[INFO] [stdout] 9b1174ac519b61e146807c1b8d728c0e91e54e1d2ea01d3b75d1f5a73bfa6e7a