[INFO] cloning repository https://github.com/segler-alex/radiobrowser-api-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/segler-alex/radiobrowser-api-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsegler-alex%2Fradiobrowser-api-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsegler-alex%2Fradiobrowser-api-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e093fd995ec90ecba8cb1e7a9a2f2a9899f83bba
[INFO] checking segler-alex/radiobrowser-api-rust against try#45a41ffb423036390396cec6d4e16c04033f4d02 for pr-116745
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsegler-alex%2Fradiobrowser-api-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/segler-alex/radiobrowser-api-rust on toolchain 45a41ffb423036390396cec6d4e16c04033f4d02
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+45a41ffb423036390396cec6d4e16c04033f4d02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/segler-alex/radiobrowser-api-rust
[INFO] finished tweaking git repo https://github.com/segler-alex/radiobrowser-api-rust
[INFO] tweaked toml for git repo https://github.com/segler-alex/radiobrowser-api-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/segler-alex/radiobrowser-api-rust 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" "+45a41ffb423036390396cec6d4e16c04033f4d02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (mysql_common) specified without providing a local path, Git repository, version, or workspace dependency to use. This will be considered an error in future versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+45a41ffb423036390396cec6d4e16c04033f4d02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1550865a50fd00d8af9c2a9fdc59ae408a0a430e73deb7dae09e17bbdf569639
[INFO] running `Command { std: "docker" "start" "-a" "1550865a50fd00d8af9c2a9fdc59ae408a0a430e73deb7dae09e17bbdf569639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1550865a50fd00d8af9c2a9fdc59ae408a0a430e73deb7dae09e17bbdf569639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1550865a50fd00d8af9c2a9fdc59ae408a0a430e73deb7dae09e17bbdf569639", kill_on_drop: false }`
[INFO] [stdout] 1550865a50fd00d8af9c2a9fdc59ae408a0a430e73deb7dae09e17bbdf569639
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:023092b8bfa974c7f3e45c5ce651cc8dd3afd5e76915d5995b8dacd3032bf956" "/opt/rustwide/cargo-home/bin/cargo" "+45a41ffb423036390396cec6d4e16c04033f4d02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39b49bbdc0f48925f42c95fe7cafb65363f331859632b70eaeecf850c3b41b7d
[INFO] running `Command { std: "docker" "start" "-a" "39b49bbdc0f48925f42c95fe7cafb65363f331859632b70eaeecf850c3b41b7d", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (mysql_common) specified without providing a local path, Git repository, version, or workspace dependency to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]    Compiling openssl v0.10.57
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling rustix v0.38.14
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking linux-raw-sys v0.4.7
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.5.4
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking lexical-util v0.8.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking httpdate v1.0.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]     Checking base64 v0.21.4
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]     Checking url v2.4.1
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking aho-corasick v1.1.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling hashbrown v0.14.1
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling bindgen v0.68.1
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]    Compiling openssl-sys v0.9.93
[INFO] [stderr]    Compiling libz-sys v1.1.12
[INFO] [stderr]    Compiling frunk_core v0.4.2
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking flate2 v1.0.27
[INFO] [stderr]    Compiling indexmap v2.0.2
[INFO] [stderr]     Checking lexical-write-integer v0.8.5
[INFO] [stderr]     Checking lexical-parse-integer v0.8.6
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling toml_datetime v0.6.3
[INFO] [stderr]    Compiling shlex v1.2.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling winnow v0.5.15
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking lexical-parse-float v0.8.5
[INFO] [stderr]     Checking lexical-write-float v0.8.5
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling regex-automata v0.3.8
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]    Compiling subprocess v0.2.9
[INFO] [stderr]     Checking encoding_rs v0.8.33
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]     Checking deranged v0.3.8
[INFO] [stderr]    Compiling darling_core v0.20.3
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.1.2
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.4
[INFO] [stderr]     Checking tokio-util v0.7.9
[INFO] [stderr]     Checking async-compression v0.4.3
[INFO] [stderr]     Checking time-core v0.1.2
[INFO] [stderr]    Compiling rust_decimal v1.32.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking ipnet v2.8.0
[INFO] [stderr]     Checking anstyle-parse v0.2.2
[INFO] [stderr]     Checking h2 v0.3.21
[INFO] [stderr]     Checking time v0.3.29
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking alloc-stdlib v0.2.2
[INFO] [stderr]     Checking lexical-core v0.8.5
[INFO] [stderr]    Compiling regex v1.9.5
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]    Compiling termcolor v1.3.0
[INFO] [stderr]     Checking no-std-compat v0.2.0
[INFO] [stderr]     Checking anstyle v1.0.4
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking anstream v0.6.4
[INFO] [stderr]     Checking bigdecimal v0.3.1
[INFO] [stderr]     Checking tempfile v3.8.0
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking stable-vec v0.4.0
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking lexical v6.1.1
[INFO] [stderr]     Checking brotli-decompressor v2.3.4
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling derive_utils v0.13.2
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.7
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking quick-xml v0.30.0
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling thiserror-impl v1.0.49
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling_macro v0.20.3
[INFO] [stderr]    Compiling hashmap_derive v0.1.0
[INFO] [stderr]    Compiling strum_macros v0.17.1
[INFO] [stderr]    Compiling frunk_derives v0.4.2
[INFO] [stderr]    Compiling frunk_proc_macros v0.1.2
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking gzip-header v1.0.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling prometheus v0.13.3
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling from_map v0.1.0
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling shorthand v0.1.1
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling darling v0.20.3
[INFO] [stderr]    Compiling mysql v24.0.0
[INFO] [stderr]     Checking sha1_smol v1.0.0
[INFO] [stderr]     Checking frunk v0.4.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking ascii v1.1.0
[INFO] [stderr]     Checking clap_lex v0.5.1
[INFO] [stderr]     Checking chunked_transfer v1.4.1
[INFO] [stderr]     Checking saturating v0.1.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking env_logger v0.10.0
[INFO] [stderr]     Checking tiny_http v0.12.0
[INFO] [stderr]     Checking clap_builder v4.4.6
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]    Compiling serde_with_macros v3.3.0
[INFO] [stderr]     Checking multipart v0.18.0
[INFO] [stderr]     Checking brotli v3.3.4
[INFO] [stderr]     Checking playlist-decoder v0.9.0
[INFO] [stderr]    Compiling pest v2.7.4
[INFO] [stderr]    Compiling mysql-common-derive v0.30.2
[INFO] [stderr]     Checking strum v0.17.1
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]    Compiling io-enum v1.1.1
[INFO] [stderr]    Compiling enum_dispatch v0.3.12
[INFO] [stderr]     Checking lru v0.10.1
[INFO] [stderr]     Checking r2d2 v0.8.10
[INFO] [stderr]     Checking colored v1.9.4
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking pem v2.0.1
[INFO] [stderr] error: could not compile `bindgen` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/45a41ffb423036390396cec6d4e16c04033f4d02/bin/rustc --crate-name bindgen --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bindgen-0.68.1/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="runtime"' -C metadata=8fed07beffb93c7e -C extra-filename=-8fed07beffb93c7e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-4fca3c454eb4c9f7.rmeta --extern cexpr=/opt/rustwide/target/debug/deps/libcexpr-0335bc82363f5dc0.rmeta --extern clang_sys=/opt/rustwide/target/debug/deps/libclang_sys-fdac2e54c384dad5.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-2f2f1256777137f8.rmeta --extern lazycell=/opt/rustwide/target/debug/deps/liblazycell-771964c6b0d4e24a.rmeta --extern peeking_take_while=/opt/rustwide/target/debug/deps/libpeeking_take_while-592c8a6f5fe22afa.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d5e10ff7bab057c4.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-ecb9810fc901132a.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-3588bf2b0b6010c5.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-cd2cf40ce95ec4e2.rmeta --extern shlex=/opt/rustwide/target/debug/deps/libshlex-5dd8559f31669c59.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-b1ccaf4c48feb8a7.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "39b49bbdc0f48925f42c95fe7cafb65363f331859632b70eaeecf850c3b41b7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39b49bbdc0f48925f42c95fe7cafb65363f331859632b70eaeecf850c3b41b7d", kill_on_drop: false }`
[INFO] [stdout] 39b49bbdc0f48925f42c95fe7cafb65363f331859632b70eaeecf850c3b41b7d