[INFO] cloning repository https://github.com/Putnug1122/rust-pdf-merger
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Putnug1122/rust-pdf-merger" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPutnug1122%2Frust-pdf-merger", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPutnug1122%2Frust-pdf-merger'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64681826350b4a46b4483c4b7285ec5ff8a24994
[INFO] checking Putnug1122/rust-pdf-merger against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPutnug1122%2Frust-pdf-merger" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Putnug1122/rust-pdf-merger on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Putnug1122/rust-pdf-merger
[INFO] finished tweaking git repo https://github.com/Putnug1122/rust-pdf-merger
[INFO] tweaked toml for git repo https://github.com/Putnug1122/rust-pdf-merger written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Putnug1122/rust-pdf-merger 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded natord v1.0.9
[INFO] [stderr]   Downloaded lopdf v0.32.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3462e51979d8274487f8de2dc901e4992cd3d7ce767c68cad3642927b91385e9
[INFO] running `Command { std: "docker" "start" "-a" "3462e51979d8274487f8de2dc901e4992cd3d7ce767c68cad3642927b91385e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3462e51979d8274487f8de2dc901e4992cd3d7ce767c68cad3642927b91385e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3462e51979d8274487f8de2dc901e4992cd3d7ce767c68cad3642927b91385e9", kill_on_drop: false }`
[INFO] [stdout] 3462e51979d8274487f8de2dc901e4992cd3d7ce767c68cad3642927b91385e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03df1477ae9c7df27a5b9e69e3629e80f32aa980bb56365a1ad36a9c74734896
[INFO] running `Command { std: "docker" "start" "-a" "03df1477ae9c7df27a5b9e69e3629e80f32aa980bb56365a1ad36a9c74734896", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking num-conv v0.1.0
[INFO] [stderr]     Checking iana-time-zone v0.1.55
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking natord v1.0.9
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking rayon v1.9.0
[INFO] [stderr]     Checking flate2 v1.0.25
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking chrono v0.4.24
[INFO] [stderr]     Checking lopdf v0.32.0
[INFO] [stderr]     Checking merge-pdf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `lopdf::dictionary`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lopdf::dictionary;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Content`, `Operation`
[INFO] [stdout]  --> src/main.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 | use lopdf::content::{Content, Operation};
[INFO] [stdout]   |                      ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]  --> src/main.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | use lopdf::{Document, Object, ObjectId, Stream, Bookmark};
[INFO] [stdout]   |                                         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lopdf::dictionary`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lopdf::dictionary;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Content`, `Operation`
[INFO] [stdout]  --> src/main.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 | use lopdf::content::{Content, Operation};
[INFO] [stdout]   |                      ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stream`
[INFO] [stdout]  --> src/main.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | use lopdf::{Document, Object, ObjectId, Stream, Bookmark};
[INFO] [stdout]   |                                         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `Command { std: "docker" "inspect" "03df1477ae9c7df27a5b9e69e3629e80f32aa980bb56365a1ad36a9c74734896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03df1477ae9c7df27a5b9e69e3629e80f32aa980bb56365a1ad36a9c74734896", kill_on_drop: false }`
[INFO] [stdout] 03df1477ae9c7df27a5b9e69e3629e80f32aa980bb56365a1ad36a9c74734896