[INFO] fetching crate beet_sim 0.0.7...
[INFO] testing beet_sim-0.0.7 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate beet_sim 0.0.7 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate beet_sim 0.0.7
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate beet_sim 0.0.7
[INFO] tweaked toml for crates.io crate beet_sim 0.0.7 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate beet_sim 0.0.7 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate beet_sim 0.0.7 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7e60d19f678a75e4dc97e9ba10db36a64732e1b993550a1f510fc99bd2d01f1
[INFO] running `Command { std: "docker" "start" "-a" "d7e60d19f678a75e4dc97e9ba10db36a64732e1b993550a1f510fc99bd2d01f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7e60d19f678a75e4dc97e9ba10db36a64732e1b993550a1f510fc99bd2d01f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7e60d19f678a75e4dc97e9ba10db36a64732e1b993550a1f510fc99bd2d01f1", kill_on_drop: false }`
[INFO] [stdout] d7e60d19f678a75e4dc97e9ba10db36a64732e1b993550a1f510fc99bd2d01f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afb753f7acfff3268f01dc18d28f509b2283eb526b9522f9c26e7412425f89c6
[INFO] running `Command { std: "docker" "start" "-a" "afb753f7acfff3268f01dc18d28f509b2283eb526b9522f9c26e7412425f89c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling winnow v0.7.13
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling spin v0.10.0
[INFO] [stderr]    Compiling foldhash v0.2.0
[INFO] [stderr]    Compiling toml_datetime v0.7.2
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling disqualified v1.0.0
[INFO] [stderr]    Compiling erased-serde v0.4.8
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling bevy_ptr v0.17.1
[INFO] [stderr]    Compiling downcast-rs v2.0.2
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling inventory v0.3.21
[INFO] [stderr]    Compiling log v0.4.28
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]    Compiling atomic-waker v1.1.2
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling nonmax v0.5.5
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]    Compiling bumpalo v3.19.0
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling nu-ansi-term v0.50.1
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling const-fnv1a-hash v1.1.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling anstyle-parse v0.2.7
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling anstyle v1.0.13
[INFO] [stderr]    Compiling colorchoice v1.0.4
[INFO] [stderr]    Compiling anstyle-query v1.1.4
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling clap_lex v0.7.5
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling anstream v0.6.21
[INFO] [stderr]    Compiling async-executor v1.13.3
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]    Compiling pathdiff v0.2.3
[INFO] [stderr]    Compiling clap_builder v4.5.48
[INFO] [stderr]    Compiling path-clean v1.0.1
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling toml_parser v1.0.3
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling toml_write v0.1.2
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling web-time v1.1.0
[INFO] [stderr]    Compiling send_wrapper v0.6.0
[INFO] [stderr]    Compiling ctrlc v3.5.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling rapidhash v1.4.0
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling hashbrown v0.16.0
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling indexmap v2.11.4
[INFO] [stderr]    Compiling bevy_platform v0.17.1
[INFO] [stderr]    Compiling bevy_utils v0.17.1
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling bytemuck_derive v1.10.1
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling variadics_please v1.1.0
[INFO] [stderr]    Compiling assert_type_match v0.1.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling clap_derive v4.5.47
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling extend v1.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]    Compiling toml_edit v0.23.6
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling bytemuck v1.23.2
[INFO] [stderr]    Compiling glam v0.30.8
[INFO] [stderr]    Compiling bevy_macro_utils v0.17.1
[INFO] [stderr]    Compiling clap v4.5.48
[INFO] [stderr]    Compiling bevy_reflect_derive v0.17.1
[INFO] [stderr]    Compiling bevy_ecs_macros v0.17.1
[INFO] [stderr]    Compiling bevy_derive v0.17.1
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling strum v0.26.3
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling bevy_tasks v0.17.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling ron v0.8.1
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling toml v0.8.23
[INFO] [stderr]    Compiling polling v3.11.0
[INFO] [stderr]    Compiling bevy_reflect v0.17.1
[INFO] [stderr]    Compiling bevy_ecs v0.17.1
[INFO] [stderr]    Compiling bevy_math v0.17.1
[INFO] [stderr] error: could not compile `bevy_reflect` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/bin/rustc --crate-name bevy_reflect --edition=2024 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bevy_reflect-0.17.1/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 '--warn=clippy::unwrap_or_default' --warn=unused_qualifications --warn=unsafe_op_in_unsafe_fn --deny=unsafe_code --warn=unexpected_cfgs '--warn=clippy::undocumented_unsafe_blocks' '--allow=clippy::type_complexity' '--allow=clippy::too_many_arguments' '--allow=clippy::too_long_first_doc_paragraph' '--warn=clippy::std_instead_of_core' '--warn=clippy::std_instead_of_alloc' '--warn=clippy::semicolon_if_nothing_returned' '--warn=clippy::ref_as_ptr' '--warn=clippy::redundant_else' '--warn=clippy::redundant_closure_for_method_calls' '--warn=clippy::ptr_cast_constness' '--warn=clippy::ptr_as_ptr' '--warn=clippy::print_stdout' '--warn=clippy::print_stderr' '--warn=clippy::nonstandard_macro_braces' '--allow=clippy::needless_lifetimes' --warn=missing_docs '--warn=clippy::match_same_arms' '--warn=clippy::manual_let_else' '--warn=clippy::doc_markdown' '--warn=clippy::allow_attributes_without_reason' '--warn=clippy::allow_attributes' '--warn=clippy::alloc_instead_of_core' --check-cfg 'cfg(docsrs_dep)' --cfg 'feature="auto_register"' --cfg 'feature="auto_register_inventory"' --cfg 'feature="glam"' --cfg 'feature="smallvec"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("auto_register", "auto_register_inventory", "auto_register_static", "critical-section", "debug", "debug_stack", "default", "documentation", "functions", "glam", "hashbrown", "petgraph", "smallvec", "smol_str", "std", "uuid", "web", "wgpu-types"))' -C metadata=2da57bf9357d7231 -C extra-filename=-ba78f6a693193809 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern assert_type_match=/opt/rustwide/target/debug/deps/libassert_type_match-92f79a6abe7446ab.so --extern bevy_platform=/opt/rustwide/target/debug/deps/libbevy_platform-8e36443f686a25f5.rmeta --extern bevy_ptr=/opt/rustwide/target/debug/deps/libbevy_ptr-fcc037b6e985c0ba.rmeta --extern bevy_reflect_derive=/opt/rustwide/target/debug/deps/libbevy_reflect_derive-4a8431a8acc0daef.so --extern bevy_utils=/opt/rustwide/target/debug/deps/libbevy_utils-8aede239819cb45f.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-7c8cb12e31f34e3f.rmeta --extern disqualified=/opt/rustwide/target/debug/deps/libdisqualified-8ad00e37c450a959.rmeta --extern downcast_rs=/opt/rustwide/target/debug/deps/libdowncast_rs-1491037c0489fc22.rmeta --extern erased_serde=/opt/rustwide/target/debug/deps/liberased_serde-3411476e69155c6b.rmeta --extern foldhash=/opt/rustwide/target/debug/deps/libfoldhash-40583849f0199317.rmeta --extern glam=/opt/rustwide/target/debug/deps/libglam-742b2e29f85e0869.rmeta --extern inventory=/opt/rustwide/target/debug/deps/libinventory-8350feb1c29496df.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-2222117a373e0096.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-2a25c8c01d4c2d5b.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-5995818d6f6e3d56.rmeta --extern variadics_please=/opt/rustwide/target/debug/deps/libvariadics_please-890d60e0cbe4826f.so --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `bevy_reflect` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/bin/rustc --crate-name bevy_reflect --edition=2024 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/bevy_reflect-0.17.1/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 '--warn=clippy::unwrap_or_default' --warn=unused_qualifications --warn=unsafe_op_in_unsafe_fn --deny=unsafe_code --warn=unexpected_cfgs '--warn=clippy::undocumented_unsafe_blocks' '--allow=clippy::type_complexity' '--allow=clippy::too_many_arguments' '--allow=clippy::too_long_first_doc_paragraph' '--warn=clippy::std_instead_of_core' '--warn=clippy::std_instead_of_alloc' '--warn=clippy::semicolon_if_nothing_returned' '--warn=clippy::ref_as_ptr' '--warn=clippy::redundant_else' '--warn=clippy::redundant_closure_for_method_calls' '--warn=clippy::ptr_cast_constness' '--warn=clippy::ptr_as_ptr' '--warn=clippy::print_stdout' '--warn=clippy::print_stderr' '--warn=clippy::nonstandard_macro_braces' '--allow=clippy::needless_lifetimes' --warn=missing_docs '--warn=clippy::match_same_arms' '--warn=clippy::manual_let_else' '--warn=clippy::doc_markdown' '--warn=clippy::allow_attributes_without_reason' '--warn=clippy::allow_attributes' '--warn=clippy::alloc_instead_of_core' --check-cfg 'cfg(docsrs_dep)' --cfg 'feature="auto_register"' --cfg 'feature="auto_register_inventory"' --cfg 'feature="glam"' --cfg 'feature="smallvec"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("auto_register", "auto_register_inventory", "auto_register_static", "critical-section", "debug", "debug_stack", "default", "documentation", "functions", "glam", "hashbrown", "petgraph", "smallvec", "smol_str", "std", "uuid", "web", "wgpu-types"))' -C metadata=204c4fc6daa4ea62 -C extra-filename=-4d928c87217e56b2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern assert_type_match=/opt/rustwide/target/debug/deps/libassert_type_match-92f79a6abe7446ab.so --extern bevy_platform=/opt/rustwide/target/debug/deps/libbevy_platform-d5b50b9e35a63ebd.rmeta --extern bevy_ptr=/opt/rustwide/target/debug/deps/libbevy_ptr-fcc037b6e985c0ba.rmeta --extern bevy_reflect_derive=/opt/rustwide/target/debug/deps/libbevy_reflect_derive-4a8431a8acc0daef.so --extern bevy_utils=/opt/rustwide/target/debug/deps/libbevy_utils-2a91bc46af64758d.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-7c8cb12e31f34e3f.rmeta --extern disqualified=/opt/rustwide/target/debug/deps/libdisqualified-8ad00e37c450a959.rmeta --extern downcast_rs=/opt/rustwide/target/debug/deps/libdowncast_rs-1491037c0489fc22.rmeta --extern erased_serde=/opt/rustwide/target/debug/deps/liberased_serde-3411476e69155c6b.rmeta --extern foldhash=/opt/rustwide/target/debug/deps/libfoldhash-40583849f0199317.rmeta --extern glam=/opt/rustwide/target/debug/deps/libglam-742b2e29f85e0869.rmeta --extern inventory=/opt/rustwide/target/debug/deps/libinventory-8350feb1c29496df.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-b81ea21a643ede5c.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-2a25c8c01d4c2d5b.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-5995818d6f6e3d56.rmeta --extern variadics_please=/opt/rustwide/target/debug/deps/libvariadics_please-890d60e0cbe4826f.so --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "afb753f7acfff3268f01dc18d28f509b2283eb526b9522f9c26e7412425f89c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afb753f7acfff3268f01dc18d28f509b2283eb526b9522f9c26e7412425f89c6", kill_on_drop: false }`
[INFO] [stdout] afb753f7acfff3268f01dc18d28f509b2283eb526b9522f9c26e7412425f89c6