[INFO] cloning repository https://github.com/joseph-abell/advent-of-code-2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joseph-abell/advent-of-code-2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoseph-abell%2Fadvent-of-code-2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoseph-abell%2Fadvent-of-code-2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1abd500557ac980074f5feb4626b03e3f1ed87f0
[INFO] checking joseph-abell/advent-of-code-2021 against master#419b3e2d3e350822550eee0e82eeded4d324d584 for pr-135536
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoseph-abell%2Fadvent-of-code-2021" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joseph-abell/advent-of-code-2021 on toolchain 419b3e2d3e350822550eee0e82eeded4d324d584
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+419b3e2d3e350822550eee0e82eeded4d324d584" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/joseph-abell/advent-of-code-2021
[INFO] finished tweaking git repo https://github.com/joseph-abell/advent-of-code-2021
[INFO] tweaked toml for git repo https://github.com/joseph-abell/advent-of-code-2021 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/joseph-abell/advent-of-code-2021 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" "+419b3e2d3e350822550eee0e82eeded4d324d584" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+419b3e2d3e350822550eee0e82eeded4d324d584" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ae49ef47884d38365e30c1540d9abb37e5b24377c730a34a8327db5e0b728f8
[INFO] running `Command { std: "docker" "start" "-a" "8ae49ef47884d38365e30c1540d9abb37e5b24377c730a34a8327db5e0b728f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ae49ef47884d38365e30c1540d9abb37e5b24377c730a34a8327db5e0b728f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ae49ef47884d38365e30c1540d9abb37e5b24377c730a34a8327db5e0b728f8", kill_on_drop: false }`
[INFO] [stdout] 8ae49ef47884d38365e30c1540d9abb37e5b24377c730a34a8327db5e0b728f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+419b3e2d3e350822550eee0e82eeded4d324d584" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f13e89f9d8dc077a80928b8f4ed69a19dfb55c6745040ed0dfef7b6f0fc30dd
[INFO] running `Command { std: "docker" "start" "-a" "9f13e89f9d8dc077a80928b8f4ed69a19dfb55c6745040ed0dfef7b6f0fc30dd", kill_on_drop: false }`
[INFO] [stderr]     Checking advent-of-code-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: `String` is not an iterator
[INFO] [stdout]   --> src/advent003a.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let a_g = a.scan("1");
[INFO] [stdout]    |                 ^^^^ `String` is not an iterator
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `String: Iterator`
[INFO] [stdout]            which is required by `&mut String: Iterator`
[INFO] [stdout]            `str: Iterator`
[INFO] [stdout]            which is required by `&mut str: Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: `String` is not an iterator
[INFO] [stdout]   --> src/advent003a.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let a_g = a.scan("1");
[INFO] [stdout]    |                 ^^^^ `String` is not an iterator
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `String: Iterator`
[INFO] [stdout]            which is required by `&mut String: Iterator`
[INFO] [stdout]            `str: Iterator`
[INFO] [stdout]            which is required by `&mut str: Iterator`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `advent-of-code-2021` (bin "advent-of-code-2021") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `advent-of-code-2021` (bin "advent-of-code-2021" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "9f13e89f9d8dc077a80928b8f4ed69a19dfb55c6745040ed0dfef7b6f0fc30dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f13e89f9d8dc077a80928b8f4ed69a19dfb55c6745040ed0dfef7b6f0fc30dd", kill_on_drop: false }`
[INFO] [stdout] 9f13e89f9d8dc077a80928b8f4ed69a19dfb55c6745040ed0dfef7b6f0fc30dd