[INFO] cloning repository https://github.com/nishtahir/identicon-generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nishtahir/identicon-generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnishtahir%2Fidenticon-generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnishtahir%2Fidenticon-generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 959caf8831fbc2e2fb2dd79acd6fb735d79ec241
[INFO] documenting nishtahir/identicon-generator against 1.75.0 for beta-1.76-rustdoc-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnishtahir%2Fidenticon-generator" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nishtahir/identicon-generator on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nishtahir/identicon-generator
[INFO] finished tweaking git repo https://github.com/nishtahir/identicon-generator
[INFO] tweaked toml for git repo https://github.com/nishtahir/identicon-generator written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nishtahir/identicon-generator 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scopeguard v0.3.2
[INFO] [stderr]   Downloaded magenta-sys v0.1.1
[INFO] [stderr]   Downloaded lzw v0.10.0
[INFO] [stderr]   Downloaded coco v0.1.1
[INFO] [stderr]   Downloaded gif v0.9.2
[INFO] [stderr]   Downloaded redox_syscall v0.1.31
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded either v1.1.0
[INFO] [stderr]   Downloaded num-iter v0.1.34
[INFO] [stderr]   Downloaded adler32 v1.0.2
[INFO] [stderr]   Downloaded color_quant v1.0.0
[INFO] [stderr]   Downloaded time v0.1.38
[INFO] [stderr]   Downloaded num_cpus v1.6.2
[INFO] [stderr]   Downloaded lazy_static v0.2.8
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.13
[INFO] [stderr]   Downloaded futures v0.1.15
[INFO] [stderr]   Downloaded scoped_threadpool v0.1.7
[INFO] [stderr]   Downloaded libc v0.2.30
[INFO] [stderr]   Downloaded rayon v0.8.2
[INFO] [stderr]   Downloaded deflate v0.7.16
[INFO] [stderr]   Downloaded image v0.12.4
[INFO] [stderr]   Downloaded rand v0.3.16
[INFO] [stderr]   Downloaded rayon-core v1.2.1
[INFO] [stderr]   Downloaded num-rational v0.1.39
[INFO] [stderr]   Downloaded num-integer v0.1.35
[INFO] [stderr]   Downloaded png v0.6.2
[INFO] [stderr]   Downloaded gcc v0.3.53
[INFO] [stderr]   Downloaded conv v0.3.3
[INFO] [stderr]   Downloaded magenta v0.1.1
[INFO] [stderr]   Downloaded byteorder v1.1.0
[INFO] [stderr]   Downloaded num-traits v0.1.40
[INFO] [stderr]   Downloaded custom_derive v0.1.7
[INFO] [stderr]   Downloaded inflate v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3b6c08b1b58a64d693089395b7f11ef3a94a2c656de68ca87b4f302fb6cd9c6
[INFO] running `Command { std: "docker" "start" "-a" "b3b6c08b1b58a64d693089395b7f11ef3a94a2c656de68ca87b4f302fb6cd9c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3b6c08b1b58a64d693089395b7f11ef3a94a2c656de68ca87b4f302fb6cd9c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3b6c08b1b58a64d693089395b7f11ef3a94a2c656de68ca87b4f302fb6cd9c6", kill_on_drop: false }`
[INFO] [stdout] b3b6c08b1b58a64d693089395b7f11ef3a94a2c656de68ca87b4f302fb6cd9c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18cf50dc47bac4a08d4d54474a9b2ca699133bc6f776328e036e3fef2aefae53
[INFO] running `Command { std: "docker" "start" "-a" "18cf50dc47bac4a08d4d54474a9b2ca699133bc6f776328e036e3fef2aefae53", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.30
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking scopeguard v0.3.2
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking futures v0.1.15
[INFO] [stderr]    Compiling gcc v0.3.53
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking deflate v0.7.16
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking scoped_threadpool v0.1.7
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.12.4
[INFO] [stderr]  Documenting image-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.92s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/image_generator/index.html
[INFO] running `Command { std: "docker" "inspect" "18cf50dc47bac4a08d4d54474a9b2ca699133bc6f776328e036e3fef2aefae53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18cf50dc47bac4a08d4d54474a9b2ca699133bc6f776328e036e3fef2aefae53", kill_on_drop: false }`
[INFO] [stdout] 18cf50dc47bac4a08d4d54474a9b2ca699133bc6f776328e036e3fef2aefae53