[INFO] fetching crate massa-sc-runtime 0.3.0...
[INFO] testing massa-sc-runtime-0.3.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate massa-sc-runtime 0.3.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate massa-sc-runtime 0.3.0
[INFO] finished tweaking crates.io crate massa-sc-runtime 0.3.0
[INFO] tweaked toml for crates.io crate massa-sc-runtime 0.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate massa-sc-runtime 0.3.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 189 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.13.1 (available: v0.22.1)
[INFO] [stderr]       Adding loupe v0.1.3 (available: v0.2.0)
[INFO] [stderr]       Adding serial_test v0.5.1 (available: v3.2.0)
[INFO] [stderr]       Adding wasmer v2.3.0 (available: v6.0.1)
[INFO] [stderr]       Adding wasmer-compiler-singlepass v2.3.0 (available: v6.0.1)
[INFO] [stderr]       Adding wasmer-middlewares v2.3.0 (available: v6.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded loupe v0.1.3
[INFO] [stderr]   Downloaded loupe-derive v0.1.3
[INFO] [stderr]   Downloaded cornetto v0.1.0
[INFO] [stderr]   Downloaded wasmer-middlewares v2.3.0
[INFO] [stderr]   Downloaded wasmer-vm v2.3.0
[INFO] [stderr]   Downloaded wasmer-types v2.3.0
[INFO] [stderr]   Downloaded enumset v1.1.10
[INFO] [stderr]   Downloaded wasmer-compiler v2.3.0
[INFO] [stderr]   Downloaded wasmer-artifact v2.3.0
[INFO] [stderr]   Downloaded wasmer-derive v2.3.0
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.82.3
[INFO] [stderr]   Downloaded wasmer-engine-universal v2.3.0
[INFO] [stderr]   Downloaded cranelift-entity v0.82.3
[INFO] [stderr]   Downloaded as-ffi-bindings v0.2.7
[INFO] [stderr]   Downloaded wasmer-object v2.3.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.82.3
[INFO] [stderr]   Downloaded wasmparser v0.83.0
[INFO] [stderr]   Downloaded wasmer-compiler-singlepass v2.3.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.82.3
[INFO] [stderr]   Downloaded regalloc v0.0.34
[INFO] [stderr]   Downloaded wasmer v2.3.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.82.3
[INFO] [stderr]   Downloaded wasmer-compiler-cranelift v2.3.0
[INFO] [stderr]   Downloaded wasmer-engine-universal-artifact v2.3.0
[INFO] [stderr]   Downloaded wasmer-engine v2.3.0
[INFO] [stderr]   Downloaded enumset_derive v0.14.0
[INFO] [stderr]   Downloaded object v0.28.4
[INFO] [stderr]   Downloaded wasmer-engine-dylib v2.3.0
[INFO] [stderr]   Downloaded cranelift-codegen v0.82.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d65a209a88fa0c785ed73ca9e8823d2d86a564b060676a78d4534f2807c15766
[INFO] running `Command { std: "docker" "start" "-a" "d65a209a88fa0c785ed73ca9e8823d2d86a564b060676a78d4534f2807c15766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d65a209a88fa0c785ed73ca9e8823d2d86a564b060676a78d4534f2807c15766", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d65a209a88fa0c785ed73ca9e8823d2d86a564b060676a78d4534f2807c15766", kill_on_drop: false }`
[INFO] [stdout] d65a209a88fa0c785ed73ca9e8823d2d86a564b060676a78d4534f2807c15766
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 139b9b83c799b141bb305c22f2e519b50a7dd3fc50c2bfc29ea8d25a08ed9f2c
[INFO] running `Command { std: "docker" "start" "-a" "139b9b83c799b141bb305c22f2e519b50a7dd3fc50c2bfc29ea8d25a08ed9f2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]    Compiling rkyv v0.7.45
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling more-asserts v0.2.2
[INFO] [stderr]    Compiling wasmparser v0.83.0
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling corosensei v0.1.4
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.82.3
[INFO] [stderr]    Compiling memmap2 v0.5.10
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.82.3
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling region v3.0.2
[INFO] [stderr]    Compiling wasm-encoder v0.239.0
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling cranelift-entity v0.82.3
[INFO] [stderr]    Compiling regalloc v0.0.34
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling leb128fmt v0.1.0
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling cranelift-bforest v0.82.3
[INFO] [stderr]    Compiling unicode-width v0.2.1
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling wasmer-compiler-cranelift v2.3.0
[INFO] [stderr]    Compiling bumpalo v3.19.0
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling as-ffi-bindings v0.2.7
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling wast v239.0.0
[INFO] [stderr]    Compiling serde_bytes v0.11.19
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling cranelift-codegen v0.82.3
[INFO] [stderr]    Compiling tempfile v3.23.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling rkyv_derive v0.7.45
[INFO] [stderr]    Compiling enum-iterator-derive v0.7.0
[INFO] [stderr]    Compiling loupe-derive v0.1.3
[INFO] [stderr]    Compiling wasmer-derive v2.3.0
[INFO] [stderr]    Compiling dynasm v1.2.3
[INFO] [stderr]    Compiling serial_test_derive v0.5.1
[INFO] [stderr]    Compiling cornetto v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling enum-iterator v0.7.0
[INFO] [stderr]    Compiling ptr_meta v0.1.4
[INFO] [stderr]    Compiling serial_test v0.5.1
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling darling_macro v0.21.3
[INFO] [stderr]    Compiling darling v0.21.3
[INFO] [stderr]    Compiling enumset_derive v0.14.0
[INFO] [stderr]    Compiling enumset v1.1.10
[INFO] [stderr]    Compiling loupe v0.1.3
[INFO] [stderr]    Compiling gimli v0.26.2
[INFO] [stderr]    Compiling object v0.28.4
[INFO] [stderr]    Compiling wasmer-types v2.3.0
[INFO] [stderr]    Compiling wat v1.239.0
[INFO] [stderr]    Compiling wasmer-compiler v2.3.0
[INFO] [stderr]    Compiling wasmer-artifact v2.3.0
[INFO] [stderr]    Compiling wasmer-object v2.3.0
[INFO] [stderr]    Compiling wasmer-vm v2.3.0
[INFO] [stderr]    Compiling wasmer-engine-universal-artifact v2.3.0
[INFO] [stderr]    Compiling dynasmrt v1.2.3
[INFO] [stderr]    Compiling wasmer-compiler-singlepass v2.3.0
[INFO] [stderr]    Compiling wasmer-engine v2.3.0
[INFO] [stderr]    Compiling wasmer-engine-dylib v2.3.0
[INFO] [stderr]    Compiling wasmer-engine-universal v2.3.0
[INFO] [stderr]    Compiling cranelift-frontend v0.82.3
[INFO] [stderr]    Compiling wasmer v2.3.0
[INFO] [stderr]    Compiling wasmer-middlewares v2.3.0
[INFO] [stderr]    Compiling massa-sc-runtime v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.45s
[INFO] running `Command { std: "docker" "inspect" "139b9b83c799b141bb305c22f2e519b50a7dd3fc50c2bfc29ea8d25a08ed9f2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139b9b83c799b141bb305c22f2e519b50a7dd3fc50c2bfc29ea8d25a08ed9f2c", kill_on_drop: false }`
[INFO] [stdout] 139b9b83c799b141bb305c22f2e519b50a7dd3fc50c2bfc29ea8d25a08ed9f2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46c62ccab135c53ffe0056e702f0691a2285d01f668d811450f143acfb1c8842
[INFO] running `Command { std: "docker" "start" "-a" "46c62ccab135c53ffe0056e702f0691a2285d01f668d811450f143acfb1c8842", kill_on_drop: false }`
[INFO] [stderr]    Compiling massa-sc-runtime v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note:  "cc" "-m64" "/tmp/rustcKB92o0/symbols.o" "<17 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/{libserde_json-af2e9717805f9ef6,libitoa-6b76ec393d6a2c41,libryu-0ea4bafc9bef6d8b,libbase64-b5296a10b8334a2c}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libtest-*,libgetopts-*,libunicode_width-*,librustc_std_workspace_std-*}.rlib" "/opt/rustwide/target/debug/deps/{libserial_test-26780d9dd799e225,libparking_lot-be82bdd85742b33f,libparking_lot_core-5356f80519c4628d,liblock_api-f62c6aba38ae709d,libinstant-12245c94b13f8c81,libwasmer_compiler_singlepass-dcad007121d627e4,libdynasmrt-af24173749f03bde,libbyteorder-1efcbe4f07366651,libwasmer_middlewares-2523ace8f12ca605,libas_ffi_bindings-f7cff28d310430ff,libanyhow-a6cad01b77d60716,libwasmer-368e0bc5ae8c1d79,libwasmer_engine_universal-176cc22528fb6950,libwasmer_engine_universal_artifact-25bedef4e69dcb4c,libwasmer_compiler_cranelift-f9cdd1afd34d5c27,libtracing-854ad895d7fd66c8,libpin_project_lite-bedc6e0acd72ff2a,libtracing_core-181ee1ed942b4689,libcranelift_frontend-99deba48d0d8c6f0,librayon-c2139d5238f69e38,librayon_core-e3d7e751b31f5166,libcrossbeam_deque-ce08bd9aba37d973,libcrossbeam_epoch-0e344cb0f6dc787c,libcrossbeam_utils-57acb8582d3ed5fe,libeither-1e551205f1478063,libcranelift_codegen-be113d26e0a8dd8f,libcranelift_codegen_shared-410a4a61e53a45d5,libregalloc-ee375897d22e33e2,librustc_hash-5a527483989b35a3,liblog-45f74354a8b36c20,libgimli-9fb29e4f488c3914,libfallible_iterator-1bf2f15d2c3f7b97,libstable_deref_trait-fa928650ff60dc8f,libcranelift_bforest-8bf7939569ddc2b9,libcranelift_entity-abe76f22a1719950,libwat-2a46f33964611653,libwast-6d23265a5df508a9,libwasm_encoder-4f4b61027246faea,libleb128fmt-2a9a82a3ed621724,libunicode_width-d12f1dd14779f44c,libbumpalo-f3bca020550ea9bd,libwasmer_engine-80c4339e9ddaf878,libmemmap2-171e50e1cd9eb78a,libwasmer_vm-fb8c2b0ea6e78589,libregion-3975348c976264de,libbitflags-e2b4db6c651223da,liblazy_static-b3603208c0de2608,libcorosensei-dedddcced416e5a4,libscopeguard-e80a2b0b1f686274,libbacktrace-e37eb11dbc3e3c0b,libminiz_oxide-dc1393c4a01d0126,libadler2-6c84652b4f76062c,libobject-19ea8e00aab1a3b2,libmemchr-f9c66c7ba21bf873,libaddr2line-4e787d18316ae865,libgimli-3f9d212b917c832b,librustc_demangle-5999d1fab1f5d4fa,libmemoffset-bc48cec0ee29d8c8,libwasmer_artifact-4abbef1b3f9bfc1c,libwasmer_compiler-4d673335f77370d1,libserde_bytes-8660a32adf296f31,libsmallvec-45f6e3b8047adea1,libtarget_lexicon-f9e8f02c66b031bd,libwasmparser-a58776fbbf807eb1,libwasmer_types-2f49dba014a9577f,libmore_asserts-35068358441b054b,libenum_iterator-3c988c08334f28a0,librkyv-2f31cd123deae238,libseahash-c7c9833d5abc2ba8,libptr_meta-4539548a88c54475,libenumset-7f942429aa7543ae,libloupe-07172155cb9e2ab2,libindexmap-0112b920c7533251,libhashbrown-fc81999c91042c56,libahash-6f83bfe0a5778042,libgetrandom-a5cfe65bb250d803,liblibc-f44516d981b27aa6,libcfg_if-666d36e5ee0df220,libonce_cell-0ba6aecba7086d38,libserde-c16893b021b2729e,libserde_core-0ad30e1887811fd3,libthiserror-6d90c6ecaae8224a}.rlib" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libstd-*,libpanic_unwind-*,libobject-*,libmemchr-*,libaddr2line-*,libgimli-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libminiz_oxide-*,libadler2-*,libunwind-*,libcfg_if-*,liblibc-*,librustc_std_workspace_core-*,liballoc-*,libcore-*,libcompiler_builtins-*}.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-L" "/tmp/rustcKB92o0/raw-dylibs" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/massa_sc_runtime-a66614f6c122bdf3" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: rust-lld: error: undefined symbol: __rust_probestack
[INFO] [stdout]           >>> referenced by libcalls.rs:690 (src/libcalls.rs:690)
[INFO] [stdout]           >>>               wasmer_vm-fb8c2b0ea6e78589.wasmer_vm.52c2563efef89dba-cgu.07.rcgu.o:(wasmer_vm_probestack) in archive /opt/rustwide/target/debug/deps/libwasmer_vm-fb8c2b0ea6e78589.rlib
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `massa-sc-runtime` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "46c62ccab135c53ffe0056e702f0691a2285d01f668d811450f143acfb1c8842", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46c62ccab135c53ffe0056e702f0691a2285d01f668d811450f143acfb1c8842", kill_on_drop: false }`
[INFO] [stdout] 46c62ccab135c53ffe0056e702f0691a2285d01f668d811450f143acfb1c8842