[INFO] fetching crate pdfutil 0.4.0...
[INFO] checking pdfutil-0.4.0 against beta for pr-78714
[INFO] extracting crate pdfutil 0.4.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate pdfutil 0.4.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pdfutil 0.4.0
[INFO] finished tweaking crates.io crate pdfutil 0.4.0
[INFO] tweaked toml for crates.io crate pdfutil 0.4.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate pdfutil 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d505b198c319ea120b235e2f71f57a7213b65642a4d15c30dece73d2bb7de7a7
[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" "d505b198c319ea120b235e2f71f57a7213b65642a4d15c30dece73d2bb7de7a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d505b198c319ea120b235e2f71f57a7213b65642a4d15c30dece73d2bb7de7a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d505b198c319ea120b235e2f71f57a7213b65642a4d15c30dece73d2bb7de7a7", kill_on_drop: false }`
[INFO] [stdout] d505b198c319ea120b235e2f71f57a7213b65642a4d15c30dece73d2bb7de7a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 312e2a684e3c3dd7e18d3921db792ee5a6e1720205e8f2ef1e337204e0d558cf
[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" "312e2a684e3c3dd7e18d3921db792ee5a6e1720205e8f2ef1e337204e0d558cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]     Checking pom v3.2.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking time v0.2.22
[INFO] [stderr]     Checking lopdf v0.26.0
[INFO] [stderr]     Checking pdfutil v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:119:7
[INFO] [stdout]     |
[INFO] [stdout] 119 |                         doc.replace_text(page, words[0], words[1]);
[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: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:119:7
[INFO] [stdout]     |
[INFO] [stdout] 119 |                         doc.replace_text(page, words[0], words[1]);
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.82s
[INFO] running `Command { std: "docker" "inspect" "312e2a684e3c3dd7e18d3921db792ee5a6e1720205e8f2ef1e337204e0d558cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "312e2a684e3c3dd7e18d3921db792ee5a6e1720205e8f2ef1e337204e0d558cf", kill_on_drop: false }`
[INFO] [stdout] 312e2a684e3c3dd7e18d3921db792ee5a6e1720205e8f2ef1e337204e0d558cf