[INFO] fetching crate varpro 0.14.0... [INFO] testing varpro-0.14.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2 [INFO] extracting crate varpro 0.14.0 into /workspace/builds/worker-0-tc1/source [INFO] started tweaking crates.io crate varpro 0.14.0 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate varpro 0.14.0 [INFO] tweaked toml for crates.io crate varpro 0.14.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate varpro 0.14.0 on toolchain 562dee4820c458d823175268e41601d4c060588a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate varpro 0.14.0 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded str_stack v0.1.0 [INFO] [stderr] Downloaded pprof v0.13.0 [INFO] [stderr] Downloaded debugid v0.8.0 [INFO] [stderr] Downloaded potential_utf v0.1.3 [INFO] [stderr] Downloaded typed_test_gen v0.1.3 [INFO] [stderr] Downloaded accelerate-src v0.3.2 [INFO] [stderr] Downloaded memmap2 v0.9.8 [INFO] [stderr] Downloaded base16ct v0.2.0 [INFO] [stderr] Downloaded openblas-src v0.10.13 [INFO] [stderr] Downloaded nalgebra-macros v0.3.0 [INFO] [stderr] Downloaded symbolic-common v12.16.3 [INFO] [stderr] Downloaded distrs v0.2.2 [INFO] [stderr] Downloaded blas-sys v0.8.0 [INFO] [stderr] Downloaded blas-src v0.14.0 [INFO] [stderr] Downloaded lapack v0.20.0 [INFO] [stderr] Downloaded ocipkg v0.2.9 [INFO] [stderr] Downloaded levenberg-marquardt v0.15.0 [INFO] [stderr] Downloaded oci-spec v0.6.8 [INFO] [stderr] Downloaded simba v0.9.1 [INFO] [stderr] Downloaded nalgebra-lapack v0.27.0 [INFO] [stderr] Downloaded glam v0.14.0 [INFO] [stderr] Downloaded ureq v2.12.1 [INFO] [stderr] Downloaded glam v0.15.2 [INFO] [stderr] Downloaded webpki-root-certs v1.0.3 [INFO] [stderr] Downloaded glam v0.16.0 [INFO] [stderr] Downloaded glam v0.20.5 [INFO] [stderr] Downloaded glam v0.22.0 [INFO] [stderr] Downloaded glam v0.21.3 [INFO] [stderr] Downloaded webpki-roots v1.0.3 [INFO] [stderr] Downloaded glam v0.23.0 [INFO] [stderr] Downloaded glam v0.24.2 [INFO] [stderr] Downloaded glam v0.18.0 [INFO] [stderr] Downloaded rustls v0.23.32 [INFO] [stderr] Downloaded regex-syntax v0.8.7 [INFO] [stderr] Downloaded glam v0.27.0 [INFO] [stderr] Downloaded nalgebra v0.34.1 [INFO] [stderr] Downloaded glam v0.28.0 [INFO] [stderr] Downloaded glam v0.25.0 [INFO] [stderr] Downloaded glam v0.17.3 [INFO] [stderr] Downloaded quick-xml v0.26.0 [INFO] [stderr] Downloaded glam v0.29.3 [INFO] [stderr] Downloaded zerovec v0.11.4 [INFO] [stderr] Downloaded ureq v3.1.2 [INFO] [stderr] Downloaded regex-automata v0.4.12 [INFO] [stderr] Downloaded glam v0.19.0 [INFO] [stderr] Downloaded glam v0.30.8 [INFO] [stderr] Downloaded inferno v0.11.21 [INFO] [stderr] Downloaded half v2.7.0 [INFO] [stderr] Downloaded cpp_demangle v0.4.5 [INFO] [stderr] Downloaded ureq-proto v0.5.2 [INFO] [stderr] Downloaded openblas-build v0.10.13 [INFO] [stderr] Downloaded cmake v0.1.54 [INFO] [stderr] Downloaded base64ct v1.8.0 [INFO] [stderr] Downloaded lapack-src v0.13.0 [INFO] [stderr] Downloaded findshlibs v0.10.2 [INFO] [stderr] Downloaded rustls-webpki v0.103.7 [INFO] [stderr] Downloaded intel-mkl-src v0.8.1 [INFO] [stderr] Downloaded intel-mkl-tool v0.8.1 [INFO] [stderr] Downloaded blas v0.23.0 [INFO] [stderr] Downloaded netlib-src v0.9.0 [INFO] [stderr] Downloaded lapack-sys v0.15.0 [INFO] [stderr] Downloaded symbolic-demangle v12.16.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0cfda0272bd74e1b51696a42fefc567651c8ca4543163c1cc300d3736a44a7a4 [INFO] running `Command { std: "docker" "start" "-a" "0cfda0272bd74e1b51696a42fefc567651c8ca4543163c1cc300d3736a44a7a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0cfda0272bd74e1b51696a42fefc567651c8ca4543163c1cc300d3736a44a7a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0cfda0272bd74e1b51696a42fefc567651c8ca4543163c1cc300d3736a44a7a4", kill_on_drop: false }` [INFO] [stdout] 0cfda0272bd74e1b51696a42fefc567651c8ca4543163c1cc300d3736a44a7a4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f4d8a9fd3cc4f2319bccdc65dae1cbf9ecfed21b8cfc7048159f31faa0a4bf5d [INFO] running `Command { std: "docker" "start" "-a" "f4d8a9fd3cc4f2319bccdc65dae1cbf9ecfed21b8cfc7048159f31faa0a4bf5d", kill_on_drop: false }` [INFO] [stderr] Compiling libm v0.2.15 [INFO] [stderr] Compiling quote v1.0.41 [INFO] [stderr] Compiling unicode-ident v1.0.19 [INFO] [stderr] Compiling paste v1.0.15 [INFO] [stderr] Compiling bytemuck v1.24.0 [INFO] [stderr] Compiling matrixmultiply v0.3.10 [INFO] [stderr] Compiling semver v1.0.27 [INFO] [stderr] Compiling typenum v1.19.0 [INFO] [stderr] Compiling proc-macro2 v1.0.101 [INFO] [stderr] Compiling distrs v0.2.2 [INFO] [stderr] Compiling safe_arch v0.7.4 [INFO] [stderr] Compiling rustc_version v0.4.1 [INFO] [stderr] Compiling syn v2.0.106 [INFO] [stderr] Compiling levenberg-marquardt v0.15.0 [INFO] [stderr] Compiling wide v0.7.33 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling num-complex v0.4.6 [INFO] [stderr] Compiling approx v0.5.1 [INFO] [stderr] Compiling num-integer v0.1.46 [INFO] [stderr] Compiling num-rational v0.4.2 [INFO] [stderr] Compiling simba v0.9.1 [INFO] [stderr] Compiling nalgebra-macros v0.3.0 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Compiling thiserror v1.0.69 [INFO] [stderr] Compiling nalgebra v0.34.1 [INFO] [stderr] Compiling varpro v0.14.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.18s [INFO] running `Command { std: "docker" "inspect" "f4d8a9fd3cc4f2319bccdc65dae1cbf9ecfed21b8cfc7048159f31faa0a4bf5d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f4d8a9fd3cc4f2319bccdc65dae1cbf9ecfed21b8cfc7048159f31faa0a4bf5d", kill_on_drop: false }` [INFO] [stdout] f4d8a9fd3cc4f2319bccdc65dae1cbf9ecfed21b8cfc7048159f31faa0a4bf5d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e65b8c1685f7f339fcfa5114b4b2b60d7601ce0f7955d63505ab2fe17e3dc7bf [INFO] running `Command { std: "docker" "start" "-a" "e65b8c1685f7f339fcfa5114b4b2b60d7601ce0f7955d63505ab2fe17e3dc7bf", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.177 [INFO] [stderr] Compiling memchr v2.7.6 [INFO] [stderr] Compiling zerocopy v0.8.27 [INFO] [stderr] Compiling zerocopy-derive v0.8.27 [INFO] [stderr] Compiling regex-syntax v0.8.7 [INFO] [stderr] Compiling getrandom v0.3.3 [INFO] [stderr] Compiling itertools v0.10.5 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling find-msvc-tools v0.1.4 [INFO] [stderr] Compiling ahash v0.8.12 [INFO] [stderr] Compiling cc v1.2.41 [INFO] [stderr] Compiling approx v0.5.1 [INFO] [stderr] Compiling aho-corasick v1.1.3 [INFO] [stderr] Compiling num-complex v0.4.6 [INFO] [stderr] Compiling object v0.37.3 [INFO] [stderr] Compiling cpp_demangle v0.4.5 [INFO] [stderr] Compiling uuid v1.18.1 [INFO] [stderr] Compiling plotters-backend v0.3.7 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling regex-automata v0.4.12 [INFO] [stderr] Compiling rustix v1.1.2 [INFO] [stderr] Compiling clap_lex v0.7.5 [INFO] [stderr] Compiling clap_builder v4.5.48 [INFO] [stderr] Compiling findshlibs v0.10.2 [INFO] [stderr] Compiling plotters-svg v0.3.7 [INFO] [stderr] Compiling is-terminal v0.4.16 [INFO] [stderr] Compiling memmap2 v0.9.8 [INFO] [stderr] Compiling getrandom v0.2.16 [INFO] [stderr] Compiling debugid v0.8.0 [INFO] [stderr] Compiling serde_json v1.0.145 [INFO] [stderr] Compiling simba v0.9.1 [INFO] [stderr] Compiling predicates-core v1.0.9 [INFO] [stderr] Compiling rustc-demangle v0.1.26 [INFO] [stderr] Compiling stable_deref_trait v1.2.1 [INFO] [stderr] Compiling half v2.7.0 [INFO] [stderr] Compiling bitflags v2.9.4 [INFO] [stderr] Compiling hashbrown v0.16.0 [INFO] [stderr] Compiling ciborium-ll v0.2.2 [INFO] [stderr] Compiling symbolic-demangle v12.16.3 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling gimli v0.32.3 [INFO] [stderr] Compiling linux-raw-sys v0.11.0 [INFO] [stderr] Compiling parking_lot_core v0.9.12 [INFO] [stderr] Compiling regex v1.10.6 [INFO] [stderr] Compiling indexmap v2.11.4 [INFO] [stderr] Compiling ciborium v0.2.2 [INFO] [stderr] Compiling tinytemplate v1.2.1 [INFO] [stderr] Compiling miniz_oxide v0.8.9 [INFO] [stderr] Compiling symbolic-common v12.16.3 [INFO] [stderr] Compiling clap v4.5.48 [INFO] [stderr] Compiling ppv-lite86 v0.2.21 [INFO] [stderr] Compiling criterion-plot v0.5.0 [INFO] [stderr] Compiling num-format v0.4.4 [INFO] [stderr] Compiling rayon v1.11.0 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling plotters v0.3.7 [INFO] [stderr] Compiling addr2line v0.25.1 [INFO] [stderr] Compiling quick-xml v0.26.0 [INFO] [stderr] Compiling float-cmp v0.9.0 [INFO] [stderr] Compiling rgb v0.8.52 [INFO] [stderr] Compiling str_stack v0.1.0 [INFO] [stderr] Compiling nalgebra v0.34.1 [INFO] [stderr] Compiling log v0.4.28 [INFO] [stderr] Compiling difflib v0.4.0 [INFO] [stderr] Compiling normalize-line-endings v0.3.0 [INFO] [stderr] Compiling termtree v0.5.1 [INFO] [stderr] Compiling pprof v0.13.0 [INFO] [stderr] Compiling oorandom v11.1.5 [INFO] [stderr] Compiling tempfile v3.23.0 [INFO] [stderr] Compiling predicates v2.1.5 [INFO] [stderr] Compiling criterion v0.5.1 [INFO] [stderr] Compiling predicates-tree v1.0.12 [INFO] [stderr] Compiling inferno v0.11.21 [INFO] [stderr] Compiling nix v0.26.4 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling parking_lot v0.12.5 [INFO] [stderr] Compiling backtrace v0.3.76 [INFO] [stderr] Compiling downcast v0.11.0 [INFO] [stderr] Compiling fragile v2.0.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling typed_test_gen v0.1.3 [INFO] [stderr] Compiling assert_matches v1.5.0 [INFO] [stderr] Compiling mockall_derive v0.11.4 [INFO] [stderr] Compiling mockall v0.11.4 [INFO] [stderr] Compiling levenberg-marquardt v0.15.0 [INFO] [stderr] Compiling varpro v0.14.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0432]: unresolved import `shared_test_code` [INFO] [stdout] --> tests/integration_tests/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use shared_test_code::evaluate_complete_model_at_params; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `shared_test_code` [INFO] [stdout] | [INFO] [stdout] = help: if you wanted to use a crate named `shared_test_code`, use `cargo add shared_test_code` to add it to your `Cargo.toml` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: cannot find module or crate `shared_test_code` in this scope [INFO] [stdout] --> tests/integration_tests/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use shared_test_code::levmar_mrhs::DoubleExponentialModelWithConstantOffsetLevmarMrhs; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `shared_test_code` [INFO] [stdout] | [INFO] [stdout] = help: if you wanted to use a crate named `shared_test_code`, use `cargo add shared_test_code` to add it to your `Cargo.toml` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved import `shared_test_code` [INFO] [stdout] --> tests/integration_tests/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use shared_test_code::get_double_exponential_model_with_constant_offset; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `shared_test_code` [INFO] [stdout] | [INFO] [stdout] = help: if you wanted to use a crate named `shared_test_code`, use `cargo add shared_test_code` to add it to your `Cargo.toml` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: cannot find module or crate `shared_test_code` in this scope [INFO] [stdout] --> tests/integration_tests/main.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | use shared_test_code::models::o_leary_example_model; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `shared_test_code` [INFO] [stdout] | [INFO] [stdout] = help: if you wanted to use a crate named `shared_test_code`, use `cargo add shared_test_code` to add it to your `Cargo.toml` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: cannot find module or crate `shared_test_code` in this scope [INFO] [stdout] --> tests/integration_tests/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use shared_test_code::models::DoubleExpModelWithConstantOffsetSepModel; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `shared_test_code` [INFO] [stdout] | [INFO] [stdout] = help: if you wanted to use a crate named `shared_test_code`, use `cargo add shared_test_code` to add it to your `Cargo.toml` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: cannot find module or crate `shared_test_code` in this scope [INFO] [stdout] --> tests/integration_tests/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use shared_test_code::models::DoubleExponentialDecayFittingWithOffsetLevmar; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `shared_test_code` [INFO] [stdout] | [INFO] [stdout] = help: if you wanted to use a crate named `shared_test_code`, use `cargo add shared_test_code` to add it to your `Cargo.toml` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: cannot find module or crate `shared_test_code` in this scope [INFO] [stdout] --> tests/integration_tests/main.rs:15:5 [INFO] [stdout] | [INFO] [stdout] 15 | use shared_test_code::models::OLearyExampleModel; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `shared_test_code` [INFO] [stdout] | [INFO] [stdout] = help: if you wanted to use a crate named `shared_test_code`, use `cargo add shared_test_code` to add it to your `Cargo.toml` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved import `shared_test_code` [INFO] [stdout] --> tests/integration_tests/main.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use shared_test_code::linspace; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `shared_test_code` [INFO] [stdout] | [INFO] [stdout] = help: if you wanted to use a crate named `shared_test_code`, use `cargo add shared_test_code` to add it to your `Cargo.toml` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0432, E0433. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0432`. [INFO] [stdout] [INFO] [stderr] error: could not compile `varpro` (test "integration_tests") due to 8 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "e65b8c1685f7f339fcfa5114b4b2b60d7601ce0f7955d63505ab2fe17e3dc7bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e65b8c1685f7f339fcfa5114b4b2b60d7601ce0f7955d63505ab2fe17e3dc7bf", kill_on_drop: false }` [INFO] [stdout] e65b8c1685f7f339fcfa5114b4b2b60d7601ce0f7955d63505ab2fe17e3dc7bf