[INFO] fetching crate kkk 0.4.0...
[INFO] testing kkk-0.4.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate kkk 0.4.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate kkk 0.4.0 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 crates.io crate kkk 0.4.0
[INFO] finished tweaking crates.io crate kkk 0.4.0
[INFO] tweaked toml for crates.io crate kkk 0.4.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 58674d225f5a2e47bafed4634ffc7bff66c9fbcd889bb7bedd593453cff2b91c
[INFO] running `Command { std: "docker" "start" "-a" "58674d225f5a2e47bafed4634ffc7bff66c9fbcd889bb7bedd593453cff2b91c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58674d225f5a2e47bafed4634ffc7bff66c9fbcd889bb7bedd593453cff2b91c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58674d225f5a2e47bafed4634ffc7bff66c9fbcd889bb7bedd593453cff2b91c", kill_on_drop: false }`
[INFO] [stdout] 58674d225f5a2e47bafed4634ffc7bff66c9fbcd889bb7bedd593453cff2b91c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] b12f32ea86d6c382df828c0723bb9a889bbf823a05f056ede48e75eaaaabcc71
[INFO] running `Command { std: "docker" "start" "-a" "b12f32ea86d6c382df828c0723bb9a889bbf823a05f056ede48e75eaaaabcc71", kill_on_drop: false }`
[INFO] [stderr]    Compiling kkk v0.4.0 (/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(non_ascii_idents)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `non_ascii_idents` has been stable since 1.53.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: identifier contains uncommon Unicode codepoints
[INFO] [stdout]   --> src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     함수 프린트_ㅋㅋㅋ() {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(uncommon_codepoints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kkk` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b12f32ea86d6c382df828c0723bb9a889bbf823a05f056ede48e75eaaaabcc71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b12f32ea86d6c382df828c0723bb9a889bbf823a05f056ede48e75eaaaabcc71", kill_on_drop: false }`
[INFO] [stdout] b12f32ea86d6c382df828c0723bb9a889bbf823a05f056ede48e75eaaaabcc71