[INFO] cloning repository https://github.com/EkkoXiao/Wordle-Rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EkkoXiao/Wordle-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEkkoXiao%2FWordle-Rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEkkoXiao%2FWordle-Rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 399cf2eb8702e0137d6194bb0c1834b45949f377 [INFO] checking EkkoXiao/Wordle-Rust against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEkkoXiao%2FWordle-Rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/EkkoXiao/Wordle-Rust [INFO] finished tweaking git repo https://github.com/EkkoXiao/Wordle-Rust [INFO] tweaked toml for git repo https://github.com/EkkoXiao/Wordle-Rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/EkkoXiao/Wordle-Rust on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/EkkoXiao/Wordle-Rust 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ffc8dd650e2bd0ab85c927486d2d7074f8eca5a3e799e3cf4e24b1b76bee522d [INFO] running `Command { std: "docker" "start" "-a" "ffc8dd650e2bd0ab85c927486d2d7074f8eca5a3e799e3cf4e24b1b76bee522d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ffc8dd650e2bd0ab85c927486d2d7074f8eca5a3e799e3cf4e24b1b76bee522d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ffc8dd650e2bd0ab85c927486d2d7074f8eca5a3e799e3cf4e24b1b76bee522d", kill_on_drop: false }` [INFO] [stdout] ffc8dd650e2bd0ab85c927486d2d7074f8eca5a3e799e3cf4e24b1b76bee522d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 16ef83c733956be14cca5ebd32680e82a5963a0a65f5e8638ac2fbc852ef507e [INFO] running `Command { std: "docker" "start" "-a" "16ef83c733956be14cca5ebd32680e82a5963a0a65f5e8638ac2fbc852ef507e", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.43 [INFO] [stderr] Compiling unicode-ident v1.0.3 [INFO] [stderr] Compiling syn v1.0.99 [INFO] [stderr] Compiling libc v0.2.131 [INFO] [stderr] Compiling serde_derive v1.0.144 [INFO] [stderr] Compiling serde v1.0.144 [INFO] [stderr] Compiling indexmap v1.9.1 [INFO] [stderr] Compiling serde_json v1.0.85 [INFO] [stderr] Checking once_cell v1.13.0 [INFO] [stderr] Checking itoa v1.0.3 [INFO] [stderr] Checking os_str_bytes v6.3.0 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Compiling ntest_proc_macro_helper v0.8.0 [INFO] [stderr] Checking textwrap v0.15.0 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking diff v0.1.13 [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stderr] Checking text_io v0.1.12 [INFO] [stderr] Checking getrandom v0.2.7 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking terminal_size v0.1.17 [INFO] [stderr] Checking pretty_assertions v1.2.1 [INFO] [stderr] Compiling quote v1.0.21 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking console v0.15.1 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Compiling toml v0.5.9 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling thiserror-impl v1.0.32 [INFO] [stderr] Compiling clap_derive v3.2.17 [INFO] [stderr] Compiling ntest_test_cases v0.8.0 [INFO] [stderr] Compiling thiserror v1.0.32 [INFO] [stderr] Compiling proc-macro-crate v1.2.1 [INFO] [stderr] Compiling ntest_timeout v0.8.1 [INFO] [stderr] Checking clap v3.2.17 [INFO] [stderr] Checking ntest v0.8.1 [INFO] [stderr] Checking assert-json-diff v2.0.2 [INFO] [stderr] Checking wordle v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] [INFO] [stderr] thread 'rustc' (643) panicked at /rustc-dev/66388cc165a6c4ac98c074dc9f0281ff23528c55/compiler/rustc_ast/src/attr/mod.rs:302:36: [INFO] [stderr] attribute is missing tokens: Attribute { kind: Normal(NormalAttr { item: AttrItem { unsafety: Default, path: Path { span: tests/basic_requirements.rs:6:1: 6:8 (#56), segments: [PathSegment { ident: #56, id: NodeId(4294967040), args: None }], tokens: None }, args: Unparsed(Empty), tokens: None }, tokens: None }), id: AttrId(33), style: Outer, span: tests/basic_requirements.rs:6:1: 6:8 (#56) } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x729fbca2bfa3 - <::print::DisplayBacktrace as core[75ca2badb63c4514]::fmt::Display>::fmt [INFO] [stderr] 1: 0x729fbd00fb48 - core[75ca2badb63c4514]::fmt::write [INFO] [stderr] 2: 0x729fbca42226 - ::write_fmt [INFO] [stderr] 3: 0x729fbca01b98 - std[7d609349af90bec6]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x729fbca1f833 - std[7d609349af90bec6]::panicking::default_hook [INFO] [stderr] 5: 0x729fbba0236a - std[7d609349af90bec6]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x729fbca1fb12 - std[7d609349af90bec6]::panicking::panic_with_hook [INFO] [stderr] 7: 0x729fbca01c58 - std[7d609349af90bec6]::panicking::panic_handler::{closure#0} [INFO] [stderr] 8: 0x729fbc9f89a9 - std[7d609349af90bec6]::sys::backtrace::__rust_end_short_backtrace:: [INFO] [stderr] 9: 0x729fbca0372d - __rustc[69841a6cbc58d81d]::rust_begin_unwind [INFO] [stderr] 10: 0x729fb9638f9c - core[75ca2badb63c4514]::panicking::panic_fmt [INFO] [stderr] 11: 0x729fbdde0110 - ::token_trees [INFO] [stderr] 12: 0x729fbe61c314 - ::fully_expand_fragment [INFO] [stderr] 13: 0x729fbe5e65d2 - ::expand_crate [INFO] [stderr] 14: 0x729fbd6f0af3 - rustc_interface[903e43df8d6bd657]::passes::configure_and_expand [INFO] [stderr] 15: 0x729fbe207658 - rustc_interface[903e43df8d6bd657]::passes::resolver_for_lowering_raw [INFO] [stderr] 16: 0x729fbe2073cd - rustc_query_impl[8c5349e00d64015e]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 17: 0x729fbe2073a7 - >::call_once [INFO] [stderr] 18: 0x729fbe1ecb5f - rustc_query_system[d45be4fb383a0235]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[8c5349e00d64015e]::plumbing::QueryCtxt, false> [INFO] [stderr] 19: 0x729fbe1ec6bc - rustc_query_impl[8c5349e00d64015e]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 20: 0x729fbe37127b - , rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[75ca2badb63c4514]::ops::function::FnOnce<(&rustc_session[1e6875ba352dc1ba]::session::Session, rustc_middle[2342951a64deba5]::ty::context::CurrentGcx, alloc[d7482eb0f1d19161]::sync::Arc, &std[7d609349af90bec6]::sync::once_lock::OnceLock, &rustc_data_structures[c82a87ce5cdbfc92]::sync::worker_local::WorkerLocal, &rustc_data_structures[c82a87ce5cdbfc92]::sync::worker_local::WorkerLocal, rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0} [INFO] [stderr] 21: 0x729fbe25ac98 - rustc_interface[903e43df8d6bd657]::interface::run_compiler::<(), rustc_driver_impl[3f9d6dd912ac34bd]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 22: 0x729fbe0eac4e - std[7d609349af90bec6]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 23: 0x729fbe0eaa20 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[75ca2badb63c4514]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 24: 0x729fbe0ed138 - ::new::thread_start [INFO] [stderr] 25: 0x729fb7c8aaa4 - [INFO] [stderr] 26: 0x729fb7d17a64 - clone [INFO] [stderr] 27: 0x0 - [INFO] [stderr] [INFO] [stderr] error: the compiler unexpectedly panicked. this is a bug. [INFO] [stderr] [INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md [INFO] [stderr] [INFO] [stderr] note: please make sure that you have updated to the latest nightly [INFO] [stderr] [INFO] [stderr] warning: the ICE couldn't be written to `/opt/rustwide/workdir/rustc-ice-2026-01-09T02_29_19-633.txt`: Read-only file system (os error 30) [INFO] [stderr] [INFO] [stderr] note: rustc 1.94.0-nightly (66388cc16 2026-01-08) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: -C embed-bitcode=no -C debuginfo=2 [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] query stack during panic: [INFO] [stderr] #0 [resolver_for_lowering_raw] getting the resolver for lowering [INFO] [stderr] end of query stack [INFO] [stderr] error: could not compile `wordle` (test "basic_requirements") [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/66388cc165a6c4ac98c074dc9f0281ff23528c55/bin/rustc --crate-name basic_requirements --edition=2021 tests/basic_requirements.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=747b7837038d9aae -C extra-filename=-f1455f5d928fd512 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern assert_json_diff=/opt/rustwide/target/debug/deps/libassert_json_diff-f533c4a1ad882851.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-9103402315d0220e.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-9702d4ced5624f40.rmeta --extern console=/opt/rustwide/target/debug/deps/libconsole-682e6ceb404a1dfd.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-3dcad08886afe173.rmeta --extern ntest=/opt/rustwide/target/debug/deps/libntest-cd387bde1f6a01e7.rmeta --extern pretty_assertions=/opt/rustwide/target/debug/deps/libpretty_assertions-acc090931197b0fc.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-56c81aa902ffa82e.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3fd484b6f775e38c.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-1d2332ba674fd225.rmeta --extern text_io=/opt/rustwide/target/debug/deps/libtext_io-bac73dff53cd6f97.rmeta --cap-lints=forbid` (exit status: 101) [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:1304:18 [INFO] [stdout] | [INFO] [stdout] 1304 | for x in &u.games { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(for_loops_over_fallibles)]` on by default [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 1304 - for x in &u.games { [INFO] [stdout] 1304 + while let Some(x) = &u.games { [INFO] [stdout] | [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 1304 - for x in &u.games { [INFO] [stdout] 1304 + if let Some(x) = &u.games { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over a `&Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/main.rs:1304:18 [INFO] [stdout] | [INFO] [stdout] 1304 | for x in &u.games { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(for_loops_over_fallibles)]` on by default [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 1304 - for x in &u.games { [INFO] [stdout] 1304 + while let Some(x) = &u.games { [INFO] [stdout] | [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 1304 - for x in &u.games { [INFO] [stdout] 1304 + if let Some(x) = &u.games { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "16ef83c733956be14cca5ebd32680e82a5963a0a65f5e8638ac2fbc852ef507e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "16ef83c733956be14cca5ebd32680e82a5963a0a65f5e8638ac2fbc852ef507e", kill_on_drop: false }` [INFO] [stdout] 16ef83c733956be14cca5ebd32680e82a5963a0a65f5e8638ac2fbc852ef507e