[INFO] cloning repository https://github.com/hamptonmoore/rust-fpng
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hamptonmoore/rust-fpng" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamptonmoore%2Frust-fpng", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamptonmoore%2Frust-fpng'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 190b99e30e90aad7d8f40ae488cf5f57281a260a
[INFO] documenting hamptonmoore/rust-fpng against try#6ee483316d2e4581572121d60a955affb2032eb3+cargoflags=-Zrustdoc-scrape-examples for scrape-examples
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhamptonmoore%2Frust-fpng" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hamptonmoore/rust-fpng on toolchain 6ee483316d2e4581572121d60a955affb2032eb3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hamptonmoore/rust-fpng
[INFO] finished tweaking git repo https://github.com/hamptonmoore/rust-fpng
[INFO] tweaked toml for git repo https://github.com/hamptonmoore/rust-fpng written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/hamptonmoore/rust-fpng already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2d4ccdbbb491d24ef1e4cd7748bd077222627a4843e2415c683f869ddb749f6
[INFO] running `Command { std: "docker" "start" "-a" "f2d4ccdbbb491d24ef1e4cd7748bd077222627a4843e2415c683f869ddb749f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2d4ccdbbb491d24ef1e4cd7748bd077222627a4843e2415c683f869ddb749f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2d4ccdbbb491d24ef1e4cd7748bd077222627a4843e2415c683f869ddb749f6", kill_on_drop: false }`
[INFO] [stdout] f2d4ccdbbb491d24ef1e4cd7748bd077222627a4843e2415c683f869ddb749f6
[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" "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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+6ee483316d2e4581572121d60a955affb2032eb3" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json" "-Zrustdoc-scrape-examples", kill_on_drop: false }`
[INFO] [stdout] f5357503dc56a247faab2974cec527b18376337e1c257a31b9eea624fa2e4a42
[INFO] running `Command { std: "docker" "start" "-a" "f5357503dc56a247faab2974cec527b18376337e1c257a31b9eea624fa2e4a42", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.38
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling scratch v1.0.1
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.67
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling link-cplusplus v1.0.6
[INFO] [stderr]    Compiling cxx v1.0.67
[INFO] [stderr]    Compiling cxx-build v1.0.67
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.67
[INFO] [stderr]    Compiling rust-fpng v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Scraping rust-fpng v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: failed to scan bin "rust-fpng" in package `rust-fpng` for example code usage
[INFO] [stderr]     Try running with `--verbose` to see the error message.
[INFO] [stderr]     If an example or library should not be scanned, then consider adding `doc-scrape-examples = false` to its `[[example]]` or `[lib]` definition in Cargo.toml
[INFO] [stderr] warning: `rust-fpng` (bin "rust-fpng") generated 1 warning
[INFO] [stderr]  Documenting rust-fpng v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.37s
[INFO] running `Command { std: "docker" "inspect" "f5357503dc56a247faab2974cec527b18376337e1c257a31b9eea624fa2e4a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5357503dc56a247faab2974cec527b18376337e1c257a31b9eea624fa2e4a42", kill_on_drop: false }`
[INFO] [stdout] f5357503dc56a247faab2974cec527b18376337e1c257a31b9eea624fa2e4a42