[INFO] cloning repository https://github.com/empdo/fractals
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/empdo/fractals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fempdo%2Ffractals", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fempdo%2Ffractals'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c914ab559596c8ab277a4c22de2cf82ed604f1f7
[INFO] documenting empdo/fractals 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%2Fempdo%2Ffractals" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/empdo/fractals 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/empdo/fractals
[INFO] finished tweaking git repo https://github.com/empdo/fractals
[INFO] tweaked toml for git repo https://github.com/empdo/fractals written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/empdo/fractals 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 serde v1.0.152
[INFO] [stderr]   Downloaded proc-macro2 v1.0.49
[INFO] [stderr]   Downloaded quote v1.0.23
[INFO] [stderr]   Downloaded coolor v0.5.1
[INFO] [stderr]   Downloaded syn v1.0.107
[INFO] [stderr]   Downloaded libc v0.2.139
[INFO] [stderr]   Downloaded sdl2 v0.35.2
[INFO] [stderr]   Downloaded palette v0.6.1
[INFO] [stderr]   Downloaded unicode-ident v1.0.6
[INFO] [stderr]   Downloaded sdl2-sys v0.35.2
[INFO] [stderr]   Downloaded toml v0.5.10
[INFO] [stderr]   Downloaded siphasher v0.3.10
[INFO] [stderr]   Downloaded phf_generator v0.11.1
[INFO] [stderr]   Downloaded phf_macros v0.11.1
[INFO] [stderr]   Downloaded approx v0.5.1
[INFO] [stderr]   Downloaded phf v0.11.1
[INFO] [stderr]   Downloaded palette_derive v0.6.1
[INFO] [stderr]   Downloaded version-compare v0.1.1
[INFO] [stderr]   Downloaded find-crate v0.6.3
[INFO] [stderr]   Downloaded phf_shared v0.11.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 167f4e40dfe755a7ba3beb67f05c512881164b0bc7807d8479ec336513a52275
[INFO] running `Command { std: "docker" "start" "-a" "167f4e40dfe755a7ba3beb67f05c512881164b0bc7807d8479ec336513a52275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "167f4e40dfe755a7ba3beb67f05c512881164b0bc7807d8479ec336513a52275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "167f4e40dfe755a7ba3beb67f05c512881164b0bc7807d8479ec336513a52275", kill_on_drop: false }`
[INFO] [stdout] 167f4e40dfe755a7ba3beb67f05c512881164b0bc7807d8479ec336513a52275
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c9630ac7b8010f818110a1484568d08b3cc32a527229d2a971c58ca4bf0c4a3c
[INFO] running `Command { std: "docker" "start" "-a" "c9630ac7b8010f818110a1484568d08b3cc32a527229d2a971c58ca4bf0c4a3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling phf_shared v0.11.1
[INFO] [stderr]    Compiling palette v0.6.1
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]     Checking coolor v0.5.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling phf_generator v0.11.1
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking stopwatch v0.0.7
[INFO] [stderr]    Compiling toml v0.5.10
[INFO] [stderr]    Compiling find-crate v0.6.3
[INFO] [stderr]    Compiling phf_macros v0.11.1
[INFO] [stderr]    Compiling palette_derive v0.6.1
[INFO] [stderr]     Checking phf v0.11.1
[INFO] [stderr]  Documenting mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.63s
[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/mandelbrot/index.html
[INFO] running `Command { std: "docker" "inspect" "c9630ac7b8010f818110a1484568d08b3cc32a527229d2a971c58ca4bf0c4a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9630ac7b8010f818110a1484568d08b3cc32a527229d2a971c58ca4bf0c4a3c", kill_on_drop: false }`
[INFO] [stdout] c9630ac7b8010f818110a1484568d08b3cc32a527229d2a971c58ca4bf0c4a3c