[INFO] cloning repository https://github.com/MaartenStaa/advent-of-code-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MaartenStaa/advent-of-code-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaartenStaa%2Fadvent-of-code-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaartenStaa%2Fadvent-of-code-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0784923099a9ca52f99fb530da338af0a3ff9859
[INFO] documenting MaartenStaa/advent-of-code-2020 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaartenStaa%2Fadvent-of-code-2020" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MaartenStaa/advent-of-code-2020 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MaartenStaa/advent-of-code-2020
[INFO] finished tweaking git repo https://github.com/MaartenStaa/advent-of-code-2020
[INFO] tweaked toml for git repo https://github.com/MaartenStaa/advent-of-code-2020 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MaartenStaa/advent-of-code-2020 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21f4772062c6b5732ffb98df797403a28b64fca986a897752825c8adc9cfff76
[INFO] running `Command { std: "docker" "start" "-a" "21f4772062c6b5732ffb98df797403a28b64fca986a897752825c8adc9cfff76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21f4772062c6b5732ffb98df797403a28b64fca986a897752825c8adc9cfff76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21f4772062c6b5732ffb98df797403a28b64fca986a897752825c8adc9cfff76", kill_on_drop: false }`
[INFO] [stdout] 21f4772062c6b5732ffb98df797403a28b64fca986a897752825c8adc9cfff76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ebe0e80cbf3d492ae4445b7020b42572316f8bc026a1e2c3e6a7a38b56cd7ed
[INFO] running `Command { std: "docker" "start" "-a" "1ebe0e80cbf3d492ae4445b7020b42572316f8bc026a1e2c3e6a7a38b56cd7ed", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]  Documenting day1-2 v0.1.0 (/opt/rustwide/workdir/day1-2)
[INFO] [stderr]  Documenting day3-2 v0.1.0 (/opt/rustwide/workdir/day3-2)
[INFO] [stderr]  Documenting day3-1 v0.1.0 (/opt/rustwide/workdir/day3-1)
[INFO] [stderr]  Documenting day4-1 v0.1.0 (/opt/rustwide/workdir/day4-1)
[INFO] [stderr]  Documenting day1-1 v0.1.0 (/opt/rustwide/workdir/day1-1)
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stdout] error[E0309]: the associated type `<I as std::iter::Iterator>::Item` may not live long enough
[INFO] [stdout]   --> day4-1/src/split.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl<'a, I: Iterator, F> Iterator for SplitIterator<I, F>
[INFO] [stdout]    |      -- the associated type `<I as std::iter::Iterator>::Item` must be valid for the lifetime `'a` as defined here...
[INFO] [stdout] ...
[INFO] [stdout] 36 |     type Item = Vec<&'a I::Item>;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^ ...so that the reference type `&'a <I as std::iter::Iterator>::Item` does not outlive the data it points at
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]    |
[INFO] [stdout] 36 |     type Item = Vec<&'a I::Item> where <I as std::iter::Iterator>::Item: 'a;
[INFO] [stdout]    |                                  ++++++++++++++++++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0309`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `day4-1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type bin --crate-name day4_1 day4-1/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=4769350c1daf07c4 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1ebe0e80cbf3d492ae4445b7020b42572316f8bc026a1e2c3e6a7a38b56cd7ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ebe0e80cbf3d492ae4445b7020b42572316f8bc026a1e2c3e6a7a38b56cd7ed", kill_on_drop: false }`
[INFO] [stdout] 1ebe0e80cbf3d492ae4445b7020b42572316f8bc026a1e2c3e6a7a38b56cd7ed
