[INFO] cloning repository https://github.com/varunkamath/zenobuf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/varunkamath/zenobuf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarunkamath%2Fzenobuf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarunkamath%2Fzenobuf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 481e708788d4a3613bf69f1c9bb0a7f0029cde1f
[INFO] checking varunkamath/zenobuf against try#73ffebff6f34db7eb167bf9edcf2afa19c3073e9 for pr-147841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarunkamath%2Fzenobuf" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/varunkamath/zenobuf
[INFO] finished tweaking git repo https://github.com/varunkamath/zenobuf
[INFO] tweaked toml for git repo https://github.com/varunkamath/zenobuf written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/varunkamath/zenobuf on toolchain 73ffebff6f34db7eb167bf9edcf2afa19c3073e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/varunkamath/zenobuf 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" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4101beebf2f6e1b8247024565803943bb2e5119ed111f0518ae83d8a06aa4098
[INFO] running `Command { std: "docker" "start" "-a" "4101beebf2f6e1b8247024565803943bb2e5119ed111f0518ae83d8a06aa4098", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4101beebf2f6e1b8247024565803943bb2e5119ed111f0518ae83d8a06aa4098", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4101beebf2f6e1b8247024565803943bb2e5119ed111f0518ae83d8a06aa4098", kill_on_drop: false }`
[INFO] [stdout] 4101beebf2f6e1b8247024565803943bb2e5119ed111f0518ae83d8a06aa4098
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a43341a635c764541d88d603d48137c8c89f0c9674083c5e9e1e0a89490b4aad
[INFO] running `Command { std: "docker" "start" "-a" "a43341a635c764541d88d603d48137c8c89f0c9674083c5e9e1e0a89490b4aad", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling serde_json v1.0.141
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling schemars v0.8.22
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling token-cell v1.5.0
[INFO] [stderr]    Compiling zenoh-macros v1.5.0
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking slab v0.4.10
[INFO] [stderr]    Compiling cc v1.2.30
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]     Checking no-std-net v0.6.0
[INFO] [stderr]     Checking hashbrown v0.15.4
[INFO] [stderr]    Compiling rustls v0.23.29
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking libloading v0.8.8
[INFO] [stderr]     Checking pnet_base v0.35.0
[INFO] [stderr]     Checking home v0.5.11
[INFO] [stderr]    Compiling zenoh-result v1.5.0
[INFO] [stderr]     Checking deranged v0.4.0
[INFO] [stderr]    Compiling time-macros v0.2.22
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking bytemuck v1.23.1
[INFO] [stderr]     Checking openssl-probe v0.1.6
[INFO] [stderr]    Compiling quinn-udp v0.5.13
[INFO] [stderr]     Checking const-oid v0.9.6
[INFO] [stderr]     Checking rustls-native-certs v0.8.1
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling quinn v0.11.8
[INFO] [stderr]     Checking safe_arch v0.7.4
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking rustc-hash v2.1.1
[INFO] [stderr]     Checking lru-slab v0.1.2
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking webpki-roots v0.26.11
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking indexmap v2.10.0
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking wide v0.7.33
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]     Checking base64ct v1.8.0
[INFO] [stderr]     Checking arc-swap v1.7.1
[INFO] [stderr]     Checking const_format v0.2.34
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]    Compiling num-bigint-dig v0.8.4
[INFO] [stderr]     Checking pem-rfc7468 v0.7.0
[INFO] [stderr]     Checking form_urlencoded v1.2.1
[INFO] [stderr]     Checking inout v0.1.4
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]     Checking der v0.7.10
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking keccak v0.1.5
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking time v0.3.41
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking socket2 v0.6.0
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking dirs-sys v0.5.0
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking pnet_sys v0.35.0
[INFO] [stderr]     Checking dirs v6.0.0
[INFO] [stderr]     Checking shellexpand v3.1.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking zenoh-collections v1.5.0
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking rusticata-macros v4.1.0
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking flume v0.11.1
[INFO] [stderr]     Checking spki v0.7.3
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking uuid v1.17.0
[INFO] [stderr]     Checking zenoh-buffers v1.5.0
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking pkcs8 v0.10.2
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]    Compiling keyed-set v1.0.0
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]     Checking array-init v2.1.0
[INFO] [stderr]     Checking pkcs1 v0.7.5
[INFO] [stderr]     Checking twox-hash v2.1.1
[INFO] [stderr]    Compiling ref-cast v1.0.24
[INFO] [stderr]     Checking petgraph v0.6.5
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking lz4_flex v0.11.5
[INFO] [stderr]     Checking fastbloom v0.9.0
[INFO] [stderr]     Checking ringbuffer-spsc v0.1.13
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]     Checking zenoh-crypto v1.5.0
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling prettyplease v0.2.36
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling zenoh v1.5.0
[INFO] [stderr]    Compiling unzip-n v0.1.2
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling multimap v0.10.1
[INFO] [stderr]    Compiling portable-atomic v1.11.1
[INFO] [stderr]     Checking rsa v0.9.8
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking unicode-width v0.2.1
[INFO] [stderr]     Checking clap_builder v4.5.41
[INFO] [stderr]     Checking unit-prefix v0.5.1
[INFO] [stderr]     Checking iana-time-zone v0.1.63
[INFO] [stderr]     Checking console v0.16.0
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]     Checking indicatif v0.18.0
[INFO] [stderr]    Compiling petgraph v0.7.1
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]     Checking rustls-webpki v0.103.4
[INFO] [stderr]     Checking rustls-webpki v0.102.8
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]    Compiling validated_struct_macros v2.1.1
[INFO] [stderr]    Compiling asn1-rs-derive v0.5.1
[INFO] [stderr]    Compiling asn1-rs-impl v0.2.0
[INFO] [stderr]    Compiling schemars_derive v0.8.22
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]     Checking tokio v1.47.0
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling prost-derive v0.14.1
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]    Compiling git-version-macro v0.3.9
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling pest v2.8.1
[INFO] [stderr]     Checking asn1-rs v0.6.2
[INFO] [stderr]     Checking git-version v0.3.9
[INFO] [stderr]     Checking tungstenite v0.24.0
[INFO] [stderr]    Compiling phf_macros v0.11.3
[INFO] [stderr]    Compiling ref-cast-impl v1.0.24
[INFO] [stderr]    Compiling zenobuf-macros v0.3.3 (/opt/rustwide/workdir/crates/zenobuf-macros)
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.0
[INFO] [stderr]     Checking zerovec v0.11.2
[INFO] [stderr]     Checking zerotrie v0.2.2
[INFO] [stderr]     Checking oid-registry v0.7.1
[INFO] [stderr]     Checking der-parser v9.0.0
[INFO] [stderr]     Checking phf v0.11.3
[INFO] [stderr]    Compiling clap_derive v4.5.41
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/73ffebff6f34db7eb167bf9edcf2afa19c3073e9/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.104/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=72edf692c48882ea -C extra-filename=-27d70fb3ee6edb38 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-bb832baf529ecfeb.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-16124fe7d8bf2d9f.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-31777e920fb1a026.rmeta --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 `tokio` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/73ffebff6f34db7eb167bf9edcf2afa19c3073e9/bin/rustc --crate-name tokio --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.47.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --warn=unexpected_cfgs --check-cfg 'cfg(fuzzing)' --check-cfg 'cfg(loom)' --check-cfg 'cfg(mio_unsupported_force_poll_poll)' --check-cfg 'cfg(tokio_allow_from_blocking_fd)' --check-cfg 'cfg(tokio_internal_mt_counters)' --check-cfg 'cfg(tokio_no_parking_lot)' --check-cfg 'cfg(tokio_no_tuning_tests)' --check-cfg 'cfg(tokio_taskdump)' --check-cfg 'cfg(tokio_unstable)' --check-cfg 'cfg(tokio_uring)' --check-cfg 'cfg(target_os, values("cygwin"))' --cfg 'feature="bytes"' --cfg 'feature="default"' --cfg 'feature="fs"' --cfg 'feature="full"' --cfg 'feature="io-std"' --cfg 'feature="io-util"' --cfg 'feature="libc"' --cfg 'feature="macros"' --cfg 'feature="mio"' --cfg 'feature="net"' --cfg 'feature="parking_lot"' --cfg 'feature="process"' --cfg 'feature="rt"' --cfg 'feature="rt-multi-thread"' --cfg 'feature="signal"' --cfg 'feature="signal-hook-registry"' --cfg 'feature="socket2"' --cfg 'feature="sync"' --cfg 'feature="time"' --cfg 'feature="tokio-macros"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("bytes", "default", "fs", "full", "io-std", "io-util", "libc", "macros", "mio", "net", "parking_lot", "process", "rt", "rt-multi-thread", "signal", "signal-hook-registry", "socket2", "sync", "test-util", "time", "tokio-macros", "tracing", "windows-sys"))' -C metadata=e0ed79e0443d48a1 -C extra-filename=-41d18aff2a5ef10f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-696d9749778e1593.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-ca7c833b11b7c9aa.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-d70a4c155684127a.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-2a07a118da8b5f81.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-dccf8aabedbf6d41.rmeta --extern signal_hook_registry=/opt/rustwide/target/debug/deps/libsignal_hook_registry-78327cdafbbb25a9.rmeta --extern socket2=/opt/rustwide/target/debug/deps/libsocket2-9759f0b5c8af26a1.rmeta --extern tokio_macros=/opt/rustwide/target/debug/deps/libtokio_macros-802beec3ab102f00.so --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "a43341a635c764541d88d603d48137c8c89f0c9674083c5e9e1e0a89490b4aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a43341a635c764541d88d603d48137c8c89f0c9674083c5e9e1e0a89490b4aad", kill_on_drop: false }`
[INFO] [stdout] a43341a635c764541d88d603d48137c8c89f0c9674083c5e9e1e0a89490b4aad