[INFO] cloning repository https://github.com/LearningOS/rust-rustlings-2024-spring-Blue-Berrys [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LearningOS/rust-rustlings-2024-spring-Blue-Berrys" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2024-spring-Blue-Berrys", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2024-spring-Blue-Berrys'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 42adbc59b846be5e10c314868f9d844ddbb4284e [INFO] checking LearningOS/rust-rustlings-2024-spring-Blue-Berrys/42adbc59b846be5e10c314868f9d844ddbb4284e against try#ccf408f4326a858c00dd845a64a86b16f360a801 for pr-129466-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLearningOS%2Frust-rustlings-2024-spring-Blue-Berrys" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LearningOS/rust-rustlings-2024-spring-Blue-Berrys 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/rust-rustlings-2024-spring-Blue-Berrys [INFO] finished tweaking git repo https://github.com/LearningOS/rust-rustlings-2024-spring-Blue-Berrys [INFO] tweaked toml for git repo https://github.com/LearningOS/rust-rustlings-2024-spring-Blue-Berrys written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/LearningOS/rust-rustlings-2024-spring-Blue-Berrys 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] 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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+ccf408f4326a858c00dd845a64a86b16f360a801" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] df3a412656b2f07e627e23ead92d0fbd650d13b59f65374c4815dcffb5ed7e5a [INFO] running `Command { std: "docker" "start" "-a" "df3a412656b2f07e627e23ead92d0fbd650d13b59f65374c4815dcffb5ed7e5a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "df3a412656b2f07e627e23ead92d0fbd650d13b59f65374c4815dcffb5ed7e5a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "df3a412656b2f07e627e23ead92d0fbd650d13b59f65374c4815dcffb5ed7e5a", kill_on_drop: false }` [INFO] [stdout] df3a412656b2f07e627e23ead92d0fbd650d13b59f65374c4815dcffb5ed7e5a [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=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] f5c5026f02c163656492732171181f07f2991bb25bbae4b6d4486c7c1e6eba51 [INFO] running `Command { std: "docker" "start" "-a" "f5c5026f02c163656492732171181f07f2991bb25bbae4b6d4486c7c1e6eba51", 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] Compiling libc v0.2.147 [INFO] [stderr] Compiling proc-macro2 v1.0.64 [INFO] [stderr] Compiling unicode-ident v1.0.10 [INFO] [stderr] Compiling quote v1.0.29 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling serde v1.0.171 [INFO] [stderr] Compiling slab v0.4.8 [INFO] [stderr] Checking regex-syntax v0.7.4 [INFO] [stderr] Checking log v0.4.19 [INFO] [stderr] Compiling lock_api v0.4.10 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling parking_lot_core v0.9.8 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling serde_json v1.0.102 [INFO] [stderr] Checking aho-corasick v1.0.2 [INFO] [stderr] Checking scopeguard v1.2.0 [INFO] [stderr] Checking smallvec v1.11.0 [INFO] [stderr] Checking itoa v1.0.8 [INFO] [stderr] Checking ryu v1.0.14 [INFO] [stderr] Compiling tokio v1.29.1 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Compiling syn v2.0.25 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Checking inotify-sys v0.1.5 [INFO] [stderr] Checking unicode-width v0.1.10 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Compiling argh_shared v0.1.10 [INFO] [stderr] Checking predicates-core v1.0.6 [INFO] [stderr] Checking inotify v0.7.1 [INFO] [stderr] Checking walkdir v2.3.3 [INFO] [stderr] Checking console v0.15.7 [INFO] [stderr] Checking float-cmp v0.8.0 [INFO] [stderr] Checking parking_lot v0.12.1 [INFO] [stderr] Checking socket2 v0.4.9 [INFO] [stderr] Checking mio v0.8.8 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking signal-hook-registry v1.4.1 [INFO] [stderr] Checking filetime v0.2.21 [INFO] [stderr] Checking regex-automata v0.3.3 [INFO] [stderr] Checking pin-project-lite v0.2.10 [INFO] [stderr] Checking termtree v0.4.1 [INFO] [stderr] Checking bytes v1.4.0 [INFO] [stderr] Checking notify v4.0.17 [INFO] [stderr] Checking home v0.5.5 [INFO] [stderr] Checking glob v0.3.1 [INFO] [stderr] Checking predicates-tree v1.0.9 [INFO] [stderr] Compiling argh_derive v0.1.10 [INFO] [stderr] Checking regex v1.9.1 [INFO] [stderr] Compiling serde_derive v1.0.171 [INFO] [stderr] Compiling tokio-macros v2.1.0 [INFO] [stderr] Checking argh v0.1.10 [INFO] [stderr] Checking indicatif v0.16.2 [INFO] [stderr] Checking predicates v1.0.8 [INFO] [stderr] Checking toml v0.5.11 [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Checking rustlings v5.5.1 (/tmp/fixit) [INFO] [stderr] Migrating src/main.rs from 2021 edition to 2024 [INFO] [stderr] Checking assert_cmd v0.11.1 [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:390:24 [INFO] [stdout] | [INFO] [stdout] 390 | 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:392:21 [INFO] [stdout] | [INFO] [stdout] 392 | } [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] 390 ~ match &*failed_exercise_hint.lock().unwrap() { Some(hint) => { [INFO] [stdout] 391 | println!("{hint}"); [INFO] [stdout] 392 ~ } _ => {}} [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `if let` assigns a shorter lifetime since Edition 2024 [INFO] [stdout] --> src/main.rs:412:31 [INFO] [stdout] | [INFO] [stdout] 412 | } else if let Err(e) = Command::new(parts[0]).args(&parts[1..]).status() { [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:414:21 [INFO] [stdout] | [INFO] [stdout] 414 | } [INFO] [stdout] | ^ [INFO] [stdout] help: a `match` with a single arm can preserve the drop order up to Edition 2021 [INFO] [stdout] | [INFO] [stdout] 412 ~ } else { match Command::new(parts[0]).args(&parts[1..]).status() { Err(e) => { [INFO] [stdout] 413 | println!("failed to execute command `{}`: {}", cmd, e); [INFO] [stdout] 414 ~ } _ => {}}} [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 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, $ex:expr_2021) => {{ [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #123742 for more information [INFO] [stdout] = help: add `#![feature(expr_fragment_specifier_2024)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2024-09-17; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: fragment specifier `expr_2021` is unstable [INFO] [stdout] --> src/ui.rs:19:20 [INFO] [stdout] | [INFO] [stdout] 19 | ($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] [stderr] Migrating tests/integration_tests.rs from 2021 edition to 2024 [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: could not compile `rustlings` (bin "rustlings" test) due to 3 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] Migrating tests/cicv.rs from 2021 edition to 2024 [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" "f5c5026f02c163656492732171181f07f2991bb25bbae4b6d4486c7c1e6eba51", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f5c5026f02c163656492732171181f07f2991bb25bbae4b6d4486c7c1e6eba51", kill_on_drop: false }` [INFO] [stdout] f5c5026f02c163656492732171181f07f2991bb25bbae4b6d4486c7c1e6eba51