[INFO] cloning repository https://github.com/LearningOS/learn_rust_rustlings-5265325 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/learn_rust_rustlings-5265325" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Flearn_rust_rustlings-5265325", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Flearn_rust_rustlings-5265325'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2a3e3dac83b37c450603ea93223e63e16486e1bb [INFO] checking LearningOS/learn_rust_rustlings-5265325/2a3e3dac83b37c450603ea93223e63e16486e1bb against try#ccf408f4326a858c00dd845a64a86b16f360a801 for pr-129466-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Flearn_rust_rustlings-5265325" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LearningOS/learn_rust_rustlings-5265325 on toolchain ccf408f4326a858c00dd845a64a86b16f360a801 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ccf408f4326a858c00dd845a64a86b16f360a801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LearningOS/learn_rust_rustlings-5265325 [INFO] finished tweaking git repo https://github.com/LearningOS/learn_rust_rustlings-5265325 [INFO] tweaked toml for git repo https://github.com/LearningOS/learn_rust_rustlings-5265325 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/LearningOS/learn_rust_rustlings-5265325 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" "+ccf408f4326a858c00dd845a64a86b16f360a801" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+ccf408f4326a858c00dd845a64a86b16f360a801" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 52e5216f39d6b03df83d5849ea642078dcae51f48c88eeab4196f2e0632fa867 [INFO] running `Command { std: "docker" "start" "-a" "52e5216f39d6b03df83d5849ea642078dcae51f48c88eeab4196f2e0632fa867", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "52e5216f39d6b03df83d5849ea642078dcae51f48c88eeab4196f2e0632fa867", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "52e5216f39d6b03df83d5849ea642078dcae51f48c88eeab4196f2e0632fa867", kill_on_drop: false }` [INFO] [stdout] 52e5216f39d6b03df83d5849ea642078dcae51f48c88eeab4196f2e0632fa867 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+ccf408f4326a858c00dd845a64a86b16f360a801" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cb07ff8f853ad4fe97b72e4b2b042235588ad1d2c86e7a9a3167ae1f7c3eec77 [INFO] running `Command { std: "docker" "start" "-a" "cb07ff8f853ad4fe97b72e4b2b042235588ad1d2c86e7a9a3167ae1f7c3eec77", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] Running `cargo fix --edition` [INFO] [stderr] Migrating Cargo.toml from 2021 edition to 2024 [INFO] [stderr] Checking rustlings v4.8.0 (/tmp/fixit) [INFO] [stderr] Migrating src/lib.rs from 2021 edition to 2024 [INFO] [stderr] Migrating tests/integration_tests.rs from 2021 edition to 2024 [INFO] [stderr] Migrating src/main.rs from 2021 edition to 2024 [INFO] [stderr] warning: failed to automatically apply fixes suggested by rustc to crate `rustlings` [INFO] [stderr] [INFO] [stderr] after fixes were automatically applied the compiler reported errors within these files: [INFO] [stderr] [INFO] [stderr] * src/ui.rs [INFO] [stderr] [INFO] [stderr] This likely indicates a bug in either rustc or cargo itself, [INFO] [stderr] and we would appreciate a bug report! You're likely to see [INFO] [stderr] a number of compiler warnings after this message which cargo [INFO] [stderr] attempted to fix but failed. If you could open an issue at [INFO] [stderr] https://github.com/rust-lang/rust/issues [INFO] [stderr] quoting the full output of this command we'd be very appreciative! [INFO] [stderr] Note that you may be able to make some more progress in the near-term [INFO] [stderr] fixing code with the `--broken-code` flag [INFO] [stderr] [INFO] [stderr] The following errors were reported: [INFO] [stderr] error[E0658]: fragment specifier `expr_2021` is unstable [INFO] [stderr] --> src/ui.rs:2:20 [INFO] [stderr] | [INFO] [stderr] 2 | ($fmt:literal, $ex:expr_2021) => {{ [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #123742 for more information [INFO] [stderr] = help: add `#![feature(expr_fragment_specifier_2024)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2024-09-17; consider upgrading it if it is out of date [INFO] [stderr] [INFO] [stderr] error[E0658]: fragment specifier `expr_2021` is unstable [INFO] [stderr] --> src/ui.rs:19:20 [INFO] [stderr] | [INFO] [stderr] 19 | ($fmt:literal, $ex:expr_2021) => {{ [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: see issue #123742 for more information [INFO] [stderr] = help: add `#![feature(expr_fragment_specifier_2024)]` to the crate attributes to enable [INFO] [stderr] = note: this compiler was built on 2024-09-17; consider upgrading it if it is out of date [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0658`. [INFO] [stderr] Original diagnostics will follow. [INFO] [stderr] [INFO] [stdout] warning: the `expr` fragment specifier will accept more expressions in the 2024 edition [INFO] [stdout] --> src/ui.rs:2:24 [INFO] [stdout] | [INFO] [stdout] 2 | ($fmt:literal, $ex:expr) => {{ [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see Migration Guide [INFO] [stdout] = note: `--force-warn edition-2024-expr-fragment-specifier` implied by `--force-warn rust-2024-compatibility` [INFO] [stdout] help: to keep the existing behavior, use the `expr_2021` fragment specifier [INFO] [stdout] | [INFO] [stdout] 2 | ($fmt:literal, $ex:expr_2021) => {{ [INFO] [stdout] | ~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the `expr` fragment specifier will accept more expressions in the 2024 edition [INFO] [stdout] --> src/ui.rs:19:24 [INFO] [stdout] | [INFO] [stdout] 19 | ($fmt:literal, $ex:expr) => {{ [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see Migration Guide [INFO] [stdout] help: to keep the existing behavior, use the `expr_2021` fragment specifier [INFO] [stdout] | [INFO] [stdout] 19 | ($fmt:literal, $ex:expr_2021) => {{ [INFO] [stdout] | ~~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `if let` assigns a shorter lifetime since Edition 2024 [INFO] [stdout] --> src/main.rs:265:24 [INFO] [stdout] | [INFO] [stdout] 265 | if let Some(hint) = &*failed_exercise_hint.lock().unwrap() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^------------------------------------ [INFO] [stdout] | | [INFO] [stdout] | this value has a significant drop implementation which may observe a major change in drop order and requires your discretion [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #124085 [INFO] [stdout] help: the value is now dropped here in Edition 2024 [INFO] [stdout] --> src/main.rs:267:21 [INFO] [stdout] | [INFO] [stdout] 267 | } [INFO] [stdout] | ^ [INFO] [stdout] = note: `--force-warn if-let-rescope` implied by `--force-warn rust-2024-compatibility` [INFO] [stdout] help: a `match` with a single arm can preserve the drop order up to Edition 2021 [INFO] [stdout] | [INFO] [stdout] 265 ~ match &*failed_exercise_hint.lock().unwrap() { Some(hint) => { [INFO] [stdout] 266 | println!("{}", hint); [INFO] [stdout] 267 ~ } _ => {}} [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: fragment specifier `expr_2021` is unstable [INFO] [stdout] --> src/ui.rs:2:20 [INFO] [stdout] | [INFO] [stdout] 2 | ($fmt:literal, $ex:expr_2021) => {{ [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #123742 for more information [INFO] [stdout] = help: add `#![feature(expr_fragment_specifier_2024)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2024-09-17; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rustlings` (bin "rustlings" test) due to 3 previous errors [INFO] [stdout] error[E0658]: fragment specifier `expr_2021` is unstable [INFO] [stdout] --> src/ui.rs:19:20 [INFO] [stdout] | [INFO] [stdout] 19 | ($fmt:literal, $ex:expr_2021) => {{ [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #123742 for more information [INFO] [stdout] = help: add `#![feature(expr_fragment_specifier_2024)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2024-09-17; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stderr] error: failed to migrate to next edition [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101) [INFO] running `Command { std: "docker" "inspect" "cb07ff8f853ad4fe97b72e4b2b042235588ad1d2c86e7a9a3167ae1f7c3eec77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb07ff8f853ad4fe97b72e4b2b042235588ad1d2c86e7a9a3167ae1f7c3eec77", kill_on_drop: false }` [INFO] [stdout] cb07ff8f853ad4fe97b72e4b2b042235588ad1d2c86e7a9a3167ae1f7c3eec77