[INFO] fetching crate yuuang_dominators 0.6.3... [INFO] building yuuang_dominators-0.6.3 against try#9b5e8b16bd1c4acf4cf8e6880368314cf021a987+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate yuuang_dominators 0.6.3 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate yuuang_dominators 0.6.3 on toolchain 9b5e8b16bd1c4acf4cf8e6880368314cf021a987 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate yuuang_dominators 0.6.3 [INFO] finished tweaking crates.io crate yuuang_dominators 0.6.3 [INFO] tweaked toml for crates.io crate yuuang_dominators 0.6.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 39 packages to latest compatible versions [INFO] [stderr] Adding fixedbitset v0.4.2 (available: v0.5.7) [INFO] [stderr] Adding indexmap v1.9.3 (available: v2.7.0) [INFO] [stderr] Adding itertools v0.10.5 (available: v0.14.0) [INFO] [stderr] Adding quickcheck v0.8.5 (available: v1.0.3) [INFO] [stderr] Adding rand v0.5.6 (available: v0.8.5) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a63fd23811f777bd6518b394be2616636edd8e3e1dbd227bf6f9b9e2e7e08c0a [INFO] running `Command { std: "docker" "start" "-a" "a63fd23811f777bd6518b394be2616636edd8e3e1dbd227bf6f9b9e2e7e08c0a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a63fd23811f777bd6518b394be2616636edd8e3e1dbd227bf6f9b9e2e7e08c0a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a63fd23811f777bd6518b394be2616636edd8e3e1dbd227bf6f9b9e2e7e08c0a", kill_on_drop: false }` [INFO] [stdout] a63fd23811f777bd6518b394be2616636edd8e3e1dbd227bf6f9b9e2e7e08c0a [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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9b5e8b16bd1c4acf4cf8e6880368314cf021a987" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c9196aa72c44279e87bd6b42f49d544e400c829e6c2449bf0397a9a981465fc9 [INFO] running `Command { std: "docker" "start" "-a" "c9196aa72c44279e87bd6b42f49d544e400c829e6c2449bf0397a9a981465fc9", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.4.0 [INFO] [stderr] Compiling hashbrown v0.12.3 [INFO] [stderr] Compiling fixedbitset v0.4.2 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling yuuang_dominators v0.6.3 (/opt/rustwide/workdir) [INFO] [stderr] thread 'rustc' panicked at compiler/rustc_mir_build/src/builder/scope.rs:1724:17: [INFO] [stdout] error: internal compiler error: compiler/rustc_mir_build/src/builder/scope.rs:1724:17: cannot unwind from goto -> bb88 [INFO] [stdout] --> src/algo/simple_paths.rs:101:6 [INFO] [stdout] | [INFO] [stdout] 101 | }) [INFO] [stdout] | ^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Box [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x748513781caa - ::fmt::h636462e57d5ef1e1 [INFO] [stderr] 1: 0x748513e13cbc - core::fmt::write::h067060808ac50eb9 [INFO] [stderr] 2: 0x748514d28e11 - std::io::Write::write_fmt::h4674fa2ed7c0dfdd [INFO] [stderr] 3: 0x748513781b02 - std::sys::backtrace::BacktraceLock::print::h0c77148acfb0b5e9 [INFO] [stderr] 4: 0x748513783ffa - std::panicking::default_hook::{{closure}}::h30daa8e7c6ccb09d [INFO] [stderr] 5: 0x748513783e43 - std::panicking::default_hook::h25f21dc0f2064615 [INFO] [stderr] 6: 0x7485128eff28 - std[b36e883d67eb0403]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 7: 0x7485137847b8 - std::panicking::rust_panic_with_hook::hc98438687e833605 [INFO] [stderr] 8: 0x74851292a341 - std[b36e883d67eb0403]::panicking::begin_panic::::{closure#0} [INFO] [stderr] 9: 0x74851291f526 - std[b36e883d67eb0403]::sys::backtrace::__rust_end_short_backtrace::::{closure#0}, !> [INFO] [stderr] 10: 0x74851291f50d - std[b36e883d67eb0403]::panicking::begin_panic:: [INFO] [stderr] 11: 0x7485129342a1 - ::emit_producing_guarantee [INFO] [stderr] 12: 0x748512e84fdc - ::span_bug:: [INFO] [stderr] 13: 0x748512f0a897 - rustc_middle[8ad6e8ce52578819]::util::bug::opt_span_bug_fmt::::{closure#0} [INFO] [stderr] 14: 0x748512ef006a - rustc_middle[8ad6e8ce52578819]::ty::context::tls::with_opt::::{closure#0}, !>::{closure#0} [INFO] [stderr] 15: 0x748512eefefb - rustc_middle[8ad6e8ce52578819]::ty::context::tls::with_context_opt::::{closure#0}, !>::{closure#0}, !> [INFO] [stderr] 16: 0x748511334437 - rustc_middle[8ad6e8ce52578819]::util::bug::span_bug_fmt:: [INFO] [stderr] 17: 0x7485147d541b - ::build_unwind_tree [INFO] [stderr] 18: 0x7485147cd7cd - rustc_mir_build[73684a27b88b946a]::builder::mir_build [INFO] [stderr] 19: 0x748513e07714 - rustc_mir_transform[857cd804783fef4d]::mir_built [INFO] [stderr] 20: 0x748513e076d7 - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 21: 0x7485140953d1 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 22: 0x748514094f8d - rustc_query_impl[1e55094a59e290f4]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 23: 0x748513e47feb - rustc_mir_transform[857cd804783fef4d]::ffi_unwind_calls::has_ffi_unwind_calls [INFO] [stderr] 24: 0x748513e47a9f - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 25: 0x7485147c7887 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 26: 0x7485147c73c9 - rustc_query_impl[1e55094a59e290f4]::query_impl::has_ffi_unwind_calls::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 27: 0x748511639c4c - rustc_mir_transform[857cd804783fef4d]::mir_promoted [INFO] [stderr] 28: 0x7485142d56d6 - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 29: 0x7485142d59b9 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 30: 0x7485142d55dc - rustc_query_impl[1e55094a59e290f4]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 31: 0x748514ec91ad - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 32: 0x7485140953d1 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 33: 0x748514094ed5 - rustc_query_impl[1e55094a59e290f4]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 34: 0x74851498868a - rustc_middle[8ad6e8ce52578819]::query::plumbing::query_get_at::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>> [INFO] [stderr] 35: 0x7485149886e6 - ::prove_closure_bounds [INFO] [stderr] 36: 0x748514202892 - ::typeck_mir [INFO] [stderr] 37: 0x748514f5405e - rustc_borrowck[378f2470cd8a106b]::type_check::type_check [INFO] [stderr] 38: 0x748513e78fdc - rustc_borrowck[378f2470cd8a106b]::nll::compute_regions [INFO] [stderr] 39: 0x748514ed6acd - rustc_borrowck[378f2470cd8a106b]::do_mir_borrowck [INFO] [stderr] 40: 0x748514ec926a - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 41: 0x7485140953d1 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 42: 0x748514094ed5 - rustc_query_impl[1e55094a59e290f4]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 43: 0x7485146bedd0 - rustc_middle[8ad6e8ce52578819]::query::plumbing::query_get_at::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>> [INFO] [stderr] 44: 0x748514d3d09e - rustc_hir_analysis[8556f302646cebdb]::collect::type_of::type_of_opaque [INFO] [stderr] 45: 0x748514d3cf11 - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 46: 0x748513f0459f - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 47: 0x7485150256f9 - rustc_query_impl[1e55094a59e290f4]::query_impl::type_of_opaque::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 48: 0x7485147850e4 - rustc_middle[8ad6e8ce52578819]::query::plumbing::query_get_at::>> [INFO] [stderr] 49: 0x748513f0aaa5 - rustc_hir_analysis[8556f302646cebdb]::collect::type_of::type_of [INFO] [stderr] 50: 0x748513f057fc - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 51: 0x748513f0459f - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 52: 0x748513f0412b - rustc_query_impl[1e55094a59e290f4]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 53: 0x7485147850e4 - rustc_middle[8ad6e8ce52578819]::query::plumbing::query_get_at::>> [INFO] [stderr] 54: 0x7485103bc702 - rustc_hir_analysis[8556f302646cebdb]::check::check::check_item_type [INFO] [stderr] 55: 0x7485119e9c1e - rustc_hir_analysis[8556f302646cebdb]::check::wfcheck::check_well_formed [INFO] [stderr] 56: 0x7485147c80bb - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 57: 0x7485147c7b69 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 58: 0x7485147c75d0 - rustc_query_impl[1e55094a59e290f4]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 59: 0x7485147c812b - rustc_middle[8ad6e8ce52578819]::query::plumbing::query_ensure_error_guaranteed::, rustc_query_system[67781f9dc633c543]::dep_graph::graph::DepNodeIndex>, ()> [INFO] [stderr] 60: 0x7485147c861b - rustc_hir_analysis[8556f302646cebdb]::check::wfcheck::check_mod_type_wf [INFO] [stderr] 61: 0x7485147c814b - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 62: 0x748514b9b084 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 63: 0x748514b9ae18 - rustc_query_impl[1e55094a59e290f4]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 64: 0x748514091f9c - rustc_hir_analysis[8556f302646cebdb]::check_crate [INFO] [stderr] 65: 0x74851429b682 - rustc_interface[b59e7ee7606ca029]::passes::run_required_analyses [INFO] [stderr] 66: 0x748514d2cc9e - rustc_interface[b59e7ee7606ca029]::passes::analysis [INFO] [stderr] 67: 0x748514d2cc6f - rustc_query_impl[1e55094a59e290f4]::plumbing::__rust_begin_short_backtrace::> [INFO] [stderr] 68: 0x748514d7b355 - rustc_query_system[67781f9dc633c543]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[1e55094a59e290f4]::plumbing::QueryCtxt, false> [INFO] [stderr] 69: 0x748514d7b08e - rustc_query_impl[1e55094a59e290f4]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace [INFO] [stderr] 70: 0x748514d701de - rustc_interface[b59e7ee7606ca029]::passes::create_and_enter_global_ctxt::, rustc_driver_impl[be5855d19ccc8b6c]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0} [INFO] [stderr] 71: 0x748514ddff51 - rustc_interface[b59e7ee7606ca029]::interface::run_compiler::<(), rustc_driver_impl[be5855d19ccc8b6c]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 72: 0x748514cf5087 - std[b36e883d67eb0403]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 73: 0x748514cf551c - <::spawn_unchecked_::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[303105738bd0c2ae]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 74: 0x748514cf6aef - std::sys::pal::unix::thread::Thread::new::thread_start::ha554cc4ba6335b05 [INFO] [stderr] 75: 0x748516419ac3 - [INFO] [stderr] 76: 0x7485164aaa04 - clone [INFO] [stderr] 77: 0x0 - [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-2025-01-01T07_06_17-72.txt`: Read-only file system (os error 30) [INFO] [stderr] [INFO] [stderr] note: rustc 1.85.0-nightly (9b5e8b16b 2024-12-19) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: --crate-type lib -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 [mir_built] building MIR for `algo::simple_paths::all_simple_paths::{closure#0}` [INFO] [stderr] #1 [has_ffi_unwind_calls] checking if `algo::simple_paths::all_simple_paths::{closure#0}` contains FFI-unwind calls [INFO] [stderr] #2 [mir_promoted] promoting constants in MIR for `algo::simple_paths::all_simple_paths::{closure#0}` [INFO] [stderr] #3 [mir_borrowck] borrow-checking `algo::simple_paths::all_simple_paths::{closure#0}` [INFO] [stderr] #4 [mir_borrowck] borrow-checking `algo::simple_paths::all_simple_paths` [INFO] [stderr] #5 [type_of_opaque] computing type of opaque `algo::simple_paths::all_simple_paths::{opaque#0}` [INFO] [stderr] #6 [type_of] computing type of `algo::simple_paths::all_simple_paths::{opaque#0}` [INFO] [stderr] #7 [check_well_formed] checking that `algo::simple_paths::all_simple_paths::{opaque#0}` is well-formed [INFO] [stderr] #8 [check_mod_type_wf] checking that types are well-formed in module `algo::simple_paths` [INFO] [stderr] #9 [analysis] running analysis passes on this crate [INFO] [stderr] end of query stack [INFO] [stderr] error: could not compile `yuuang_dominators` (lib) [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/9b5e8b16bd1c4acf4cf8e6880368314cf021a987/bin/rustc --crate-name yuuang_dominators --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="graphmap"' --cfg 'feature="matrix_graph"' --cfg 'feature="stable_graph"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("all", "default", "generate", "graphmap", "matrix_graph", "quickcheck", "serde", "serde-1", "serde_derive", "stable_graph", "unstable"))' -C metadata=57d433738d651a71 -C extra-filename=-a956f903b9c6d0ee --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern fixedbitset=/opt/rustwide/target/debug/deps/libfixedbitset-df0bdb8cee23aced.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-76d9bb6de35a6542.rmeta --cap-lints=forbid -Dtail-expr-drop-order` (exit status: 101) [INFO] running `Command { std: "docker" "inspect" "c9196aa72c44279e87bd6b42f49d544e400c829e6c2449bf0397a9a981465fc9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c9196aa72c44279e87bd6b42f49d544e400c829e6c2449bf0397a9a981465fc9", kill_on_drop: false }` [INFO] [stdout] c9196aa72c44279e87bd6b42f49d544e400c829e6c2449bf0397a9a981465fc9