[INFO] cloning repository https://github.com/ntzm/aoc-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ntzm/aoc-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fntzm%2Faoc-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fntzm%2Faoc-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd3a9f12dd0c805b877ad3797423a2cfbf1db335
[INFO] testing ntzm/aoc-2020 against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fntzm%2Faoc-2020" "/workspace/builds/worker-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ntzm/aoc-2020 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ntzm/aoc-2020
[INFO] finished tweaking git repo https://github.com/ntzm/aoc-2020
[INFO] tweaked toml for git repo https://github.com/ntzm/aoc-2020 written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate git repo https://github.com/ntzm/aoc-2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe30178872911183c878101012588ff768d4fedfa47c92bbda6649e3b1358507
[INFO] running `Command { std: "docker" "start" "-a" "fe30178872911183c878101012588ff768d4fedfa47c92bbda6649e3b1358507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe30178872911183c878101012588ff768d4fedfa47c92bbda6649e3b1358507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe30178872911183c878101012588ff768d4fedfa47c92bbda6649e3b1358507", kill_on_drop: false }`
[INFO] [stdout] fe30178872911183c878101012588ff768d4fedfa47c92bbda6649e3b1358507
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0df99f742d5c670ce8df2a9fbecab2f565046b27db1a813db63911031d43fa55
[INFO] running `Command { std: "docker" "start" "-a" "0df99f742d5c670ce8df2a9fbecab2f565046b27db1a813db63911031d43fa55", kill_on_drop: false }`
[INFO] [stderr]    Compiling aoc-2020-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_fold_self)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `fold_first` found for struct `Map` in the current scope
[INFO] [stdout]   --> src/day_06.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 .fold_first(|a, b| a.intersection(&b).cloned().collect())
[INFO] [stdout]    |                  ^^^^^^^^^^ method not found in `Map<std::str::Split<'_, &str>, [closure@src/day_06.rs:22:22: 22:73]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc-2020-rs` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "0df99f742d5c670ce8df2a9fbecab2f565046b27db1a813db63911031d43fa55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0df99f742d5c670ce8df2a9fbecab2f565046b27db1a813db63911031d43fa55", kill_on_drop: false }`
[INFO] [stdout] 0df99f742d5c670ce8df2a9fbecab2f565046b27db1a813db63911031d43fa55