[INFO] cloning repository https://github.com/rose2221/Rustlings [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rose2221/Rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frose2221%2FRustlings", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frose2221%2FRustlings'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1f7caf6d4143fb68ba4ed19c19f0a06ac8ef8589 [INFO] testing rose2221/Rustlings against beta-2025-10-28 for beta-1.92-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frose2221%2FRustlings" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/rose2221/Rustlings [INFO] finished tweaking git repo https://github.com/rose2221/Rustlings [INFO] tweaked toml for git repo https://github.com/rose2221/Rustlings written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/rose2221/Rustlings on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/rose2221/Rustlings 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 62ecd843d9c3d1c7d88da510ee6b42344c2439d77e997776324ed2e843c8f65a [INFO] running `Command { std: "docker" "start" "-a" "62ecd843d9c3d1c7d88da510ee6b42344c2439d77e997776324ed2e843c8f65a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "62ecd843d9c3d1c7d88da510ee6b42344c2439d77e997776324ed2e843c8f65a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "62ecd843d9c3d1c7d88da510ee6b42344c2439d77e997776324ed2e843c8f65a", kill_on_drop: false }` [INFO] [stdout] 62ecd843d9c3d1c7d88da510ee6b42344c2439d77e997776324ed2e843c8f65a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b84e202c06959a6ffd55ad6ee63b369853d6d4b9dc34754443828ee7cf4cc654 [INFO] running `Command { std: "docker" "start" "-a" "b84e202c06959a6ffd55ad6ee63b369853d6d4b9dc34754443828ee7cf4cc654", kill_on_drop: false }` [INFO] [stderr] Compiling new_hello v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: cannot find macro `prinln` in this scope [INFO] [stdout] --> src/main.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 46 | prinln!(the word is {}, s); [INFO] [stdout] | ^^^^^^ help: a macro with a similar name exists: `println` [INFO] [stdout] | [INFO] [stdout] --> /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/macros.rs:138:1 [INFO] [stdout] | [INFO] [stdout] = note: similarly named macro `println` defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/main.rs:35:11 [INFO] [stdout] | [INFO] [stdout] 35 | if(item == b' '){ [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 35 - if(item == b' '){ [INFO] [stdout] 35 + if item == b' ' { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/main.rs:32:30 [INFO] [stdout] | [INFO] [stdout] 32 | fn first_word(s: &String) -> &str{ [INFO] [stdout] | ---------- ^^^^ expected `&str`, found `()` [INFO] [stdout] | | [INFO] [stdout] | implicitly returns `()` as its body has no tail or `return` expression [INFO] [stdout] ... [INFO] [stdout] 39 | &s[..]; [INFO] [stdout] | - help: remove this semicolon to return this value [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `new_hello` (bin "new_hello") due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "b84e202c06959a6ffd55ad6ee63b369853d6d4b9dc34754443828ee7cf4cc654", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b84e202c06959a6ffd55ad6ee63b369853d6d4b9dc34754443828ee7cf4cc654", kill_on_drop: false }` [INFO] [stdout] b84e202c06959a6ffd55ad6ee63b369853d6d4b9dc34754443828ee7cf4cc654