[INFO] fetching crate micro_core 0.2.0... [INFO] testing micro_core-0.2.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate micro_core 0.2.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate micro_core 0.2.0 [INFO] removed 0 missing examples [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate micro_core 0.2.0 [INFO] tweaked toml for crates.io crate micro_core 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate micro_core 0.2.0 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate micro_core 0.2.0 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9a3ebd2de9720b34273c31c200adcc9c298a809bec0a9d90aa7c816cc5e251a7 [INFO] running `Command { std: "docker" "start" "-a" "9a3ebd2de9720b34273c31c200adcc9c298a809bec0a9d90aa7c816cc5e251a7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9a3ebd2de9720b34273c31c200adcc9c298a809bec0a9d90aa7c816cc5e251a7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9a3ebd2de9720b34273c31c200adcc9c298a809bec0a9d90aa7c816cc5e251a7", kill_on_drop: false }` [INFO] [stdout] 9a3ebd2de9720b34273c31c200adcc9c298a809bec0a9d90aa7c816cc5e251a7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 73b2235e0fec6bd683f6be681140301924d2236bac4c7fb360ebee59a84badde [INFO] running `Command { std: "docker" "start" "-a" "73b2235e0fec6bd683f6be681140301924d2236bac4c7fb360ebee59a84badde", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling heapless v0.8.0 [INFO] [stderr] Compiling micro_core v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Compiling stable_deref_trait v1.2.0 [INFO] [stderr] Compiling hash32 v0.3.1 [INFO] [stderr] warning: micro_core@0.2.0: Building micro_core with: [INFO] [stderr] warning: micro_core@0.2.0: - Target: x86_64-unknown-linux-gnu [INFO] [stderr] warning: micro_core@0.2.0: - Profile: debug [INFO] [stderr] Compiling approx v0.5.1 [INFO] [stderr] Compiling num-complex v0.4.6 [INFO] [stderr] Compiling num-integer v0.1.46 [INFO] [stderr] Compiling num-rational v0.4.2 [INFO] [stderr] Compiling simba v0.8.1 [INFO] [stderr] Compiling nalgebra v0.32.6 [INFO] [stdout] warning: unused import: `alloc::vec::Vec` [INFO] [stdout] --> src/lib.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use alloc::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `AgentType` [INFO] [stdout] --> src/integration.rs:4:33 [INFO] [stdout] | [INFO] [stdout] 4 | use crate::micronet::{MicroNet, AgentType, BasicAgent}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `embed_from_root` [INFO] [stdout] --> src/integration.rs:5:42 [INFO] [stdout] | [INFO] [stdout] 5 | use crate::projection::{project_to_root, embed_from_root}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `root_space` is never read [INFO] [stdout] --> src/micronet.rs:233:5 [INFO] [stdout] | [INFO] [stdout] 231 | pub struct AgentSwarm { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 232 | agents: Vec>, [INFO] [stdout] 233 | root_space: RootSpace, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.45s [INFO] running `Command { std: "docker" "inspect" "73b2235e0fec6bd683f6be681140301924d2236bac4c7fb360ebee59a84badde", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "73b2235e0fec6bd683f6be681140301924d2236bac4c7fb360ebee59a84badde", kill_on_drop: false }` [INFO] [stdout] 73b2235e0fec6bd683f6be681140301924d2236bac4c7fb360ebee59a84badde [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 06edbaea0ae72cad779c97d290e58e735a8dad33848e7f4f819f000abe91fcd3 [INFO] running `Command { std: "docker" "start" "-a" "06edbaea0ae72cad779c97d290e58e735a8dad33848e7f4f819f000abe91fcd3", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.95 [INFO] [stderr] Compiling zerocopy v0.8.26 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling aho-corasick v1.1.3 [INFO] [stderr] Compiling bitflags v2.9.1 [INFO] [stderr] Compiling getrandom v0.3.3 [INFO] [stderr] Compiling getrandom v0.2.16 [INFO] [stderr] Compiling half v2.6.0 [INFO] [stderr] Compiling clap_builder v4.5.42 [INFO] [stderr] Compiling wait-timeout v0.2.1 [INFO] [stderr] Compiling bit-vec v0.8.0 [INFO] [stderr] Compiling rayon v1.10.0 [INFO] [stderr] warning: micro_core@0.2.0: Building micro_core with: [INFO] [stderr] warning: micro_core@0.2.0: - Target: x86_64-unknown-linux-gnu [INFO] [stderr] warning: micro_core@0.2.0: - Profile: debug [INFO] [stderr] Compiling is-terminal v0.4.16 [INFO] [stderr] Compiling unarray v0.1.4 [INFO] [stderr] Compiling rustix v1.0.8 [INFO] [stderr] Compiling ciborium-ll v0.2.2 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling rand_core v0.9.3 [INFO] [stderr] Compiling bit-set v0.8.0 [INFO] [stderr] Compiling rand v0.9.2 [INFO] [stderr] Compiling rand_xorshift v0.4.0 [INFO] [stderr] Compiling regex-automata v0.4.9 [INFO] [stderr] Compiling approx v0.5.1 [INFO] [stderr] Compiling num-integer v0.1.46 [INFO] [stderr] Compiling num-complex v0.4.6 [INFO] [stderr] Compiling plotters v0.3.7 [INFO] [stderr] Compiling quote v1.0.40 [INFO] [stderr] Compiling syn v2.0.104 [INFO] [stderr] Compiling num-rational v0.4.2 [INFO] [stderr] Compiling simba v0.8.1 [INFO] [stderr] Compiling tempfile v3.20.0 [INFO] [stderr] Compiling clap v4.5.42 [INFO] [stderr] Compiling rusty-fork v0.3.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.21 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand_chacha v0.9.0 [INFO] [stderr] Compiling proptest v1.7.0 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling regex v1.11.1 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Compiling env_logger v0.8.4 [INFO] [stderr] Compiling quickcheck v1.0.3 [INFO] [stderr] Compiling serde v1.0.219 [INFO] [stderr] Compiling nalgebra v0.32.6 [INFO] [stderr] Compiling serde_json v1.0.142 [INFO] [stderr] Compiling ciborium v0.2.2 [INFO] [stderr] Compiling tinytemplate v1.2.1 [INFO] [stderr] Compiling criterion v0.5.1 [INFO] [stderr] Compiling micro_core v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `alloc::vec::Vec` [INFO] [stdout] --> src/lib.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use alloc::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `AgentType` [INFO] [stdout] --> src/integration.rs:4:33 [INFO] [stdout] | [INFO] [stdout] 4 | use crate::micronet::{MicroNet, AgentType, BasicAgent}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `embed_from_root` [INFO] [stdout] --> src/integration.rs:5:42 [INFO] [stdout] | [INFO] [stdout] 5 | use crate::projection::{project_to_root, embed_from_root}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `root_space` is never read [INFO] [stdout] --> src/micronet.rs:233:5 [INFO] [stdout] | [INFO] [stdout] 231 | pub struct AgentSwarm { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 232 | agents: Vec>, [INFO] [stdout] 233 | root_space: RootSpace, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `alloc::vec::Vec` [INFO] [stdout] --> src/lib.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | use alloc::vec::Vec; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `AgentType` [INFO] [stdout] --> src/integration.rs:4:33 [INFO] [stdout] | [INFO] [stdout] 4 | use crate::micronet::{MicroNet, AgentType, BasicAgent}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `embed_from_root` [INFO] [stdout] --> src/integration.rs:5:42 [INFO] [stdout] | [INFO] [stdout] 5 | use crate::projection::{project_to_root, embed_from_root}; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `root_space` is never read [INFO] [stdout] --> src/micronet.rs:233:5 [INFO] [stdout] | [INFO] [stdout] 231 | pub struct AgentSwarm { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] 232 | agents: Vec>, [INFO] [stdout] 233 | root_space: RootSpace, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 34.84s [INFO] running `Command { std: "docker" "inspect" "06edbaea0ae72cad779c97d290e58e735a8dad33848e7f4f819f000abe91fcd3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06edbaea0ae72cad779c97d290e58e735a8dad33848e7f4f819f000abe91fcd3", kill_on_drop: false }` [INFO] [stdout] 06edbaea0ae72cad779c97d290e58e735a8dad33848e7f4f819f000abe91fcd3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 22c3f6a289d50a9a35e4a80882024414fb824a6670a924705051e7f08a6bf45d [INFO] running `Command { std: "docker" "start" "-a" "22c3f6a289d50a9a35e4a80882024414fb824a6670a924705051e7f08a6bf45d", kill_on_drop: false }` [INFO] [stderr] warning: micro_core@0.2.0: Building micro_core with: [INFO] [stderr] warning: micro_core@0.2.0: - Target: x86_64-unknown-linux-gnu [INFO] [stderr] warning: micro_core@0.2.0: - Profile: debug [INFO] [stderr] warning: unused import: `alloc::vec::Vec` [INFO] [stderr] --> src/lib.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | use alloc::vec::Vec; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `AgentType` [INFO] [stderr] --> src/integration.rs:4:33 [INFO] [stderr] | [INFO] [stderr] 4 | use crate::micronet::{MicroNet, AgentType, BasicAgent}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `embed_from_root` [INFO] [stderr] --> src/integration.rs:5:42 [INFO] [stderr] | [INFO] [stderr] 5 | use crate::projection::{project_to_root, embed_from_root}; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field `root_space` is never read [INFO] [stderr] --> src/micronet.rs:233:5 [INFO] [stderr] | [INFO] [stderr] 231 | pub struct AgentSwarm { [INFO] [stderr] | ---------- field in this struct [INFO] [stderr] 232 | agents: Vec>, [INFO] [stderr] 233 | root_space: RootSpace, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `micro_core` (lib) generated 4 warnings (run `cargo fix --lib -p micro_core` to apply 3 suggestions) [INFO] [stderr] warning: `micro_core` (lib test) generated 4 warnings (4 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/micro_core-63b906250fdd0ac7) [INFO] [stdout] [INFO] [stdout] running 14 tests [INFO] [stdout] test integration::tests::test_bridge_creation ... ok [INFO] [stdout] test micronet::tests::test_agent_creation ... ok [INFO] [stdout] test micronet::tests::test_agent_compatibility ... ok [INFO] [stdout] test integration::tests::test_annealing_schedule ... ok [INFO] [stdout] test projection::tests::test_adaptive_root_count ... ok [INFO] [stdout] test projection::tests::test_projection_embedding_roundtrip ... ok [INFO] [stdout] test tests::test_simd_alignment ... ok [INFO] [stdout] test tests::test_version ... ok [INFO] [stdout] test types::tests::test_root_space_initialization ... ok [INFO] [stdout] test types::tests::test_root_vector_dot_product ... ok [INFO] [stdout] test types::tests::test_root_vector_creation ... ok [INFO] [stdout] test integration::tests::test_metrics_export ... ok [INFO] [stdout] test micronet::tests::test_routing_agent ... ok [INFO] [stdout] test projection::tests::test_streaming_projector ... ok [INFO] [stdout] [INFO] [stderr] Running tests/simd_correctness.rs (/opt/rustwide/target/debug/deps/simd_correctness-80535e8c2b234d74) [INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 7 tests [INFO] [stdout] test test_simd_edge_cases ... ok [INFO] [stdout] test test_simd_cartan_matrix_operations ... ok [INFO] [stdout] test test_simd_scalar_equivalence ... ok [INFO] [stdout] test test_simd_vector_operations ... ok [INFO] [stdout] test test_simd_numerical_stability ... ok [INFO] [stdout] test test_simd_projection_equivalence ... ok [INFO] [stdout] test test_simd_performance_sanity ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s [INFO] [stdout] [INFO] [stderr] Doc-tests micro_core [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "22c3f6a289d50a9a35e4a80882024414fb824a6670a924705051e7f08a6bf45d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "22c3f6a289d50a9a35e4a80882024414fb824a6670a924705051e7f08a6bf45d", kill_on_drop: false }` [INFO] [stdout] 22c3f6a289d50a9a35e4a80882024414fb824a6670a924705051e7f08a6bf45d