[INFO] fetching crate deser-value 0.10.1... [INFO] checking deser-value-0.10.1 against c79f6bc4fc2389852aeff667626cb3e58adfe71c for pr-164081 [INFO] extracting crate deser-value 0.10.1 into /workspace/builds/worker-0-tc2/source [INFO] started tweaking crates.io crate deser-value 0.10.1 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate deser-value 0.10.1 [INFO] tweaked toml for crates.io crate deser-value 0.10.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate deser-value 0.10.1 on toolchain c79f6bc4fc2389852aeff667626cb3e58adfe71c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c79f6bc4fc2389852aeff667626cb3e58adfe71c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate deser-value 0.10.1 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" "+c79f6bc4fc2389852aeff667626cb3e58adfe71c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }` [INFO] [stdout] da265302abb7f67abbdc71a2fae896d3acab0b00d831c1a7dcb1f82cfd8ffb7d [INFO] running `Command { std: "docker" "start" "da265302abb7f67abbdc71a2fae896d3acab0b00d831c1a7dcb1f82cfd8ffb7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "da265302abb7f67abbdc71a2fae896d3acab0b00d831c1a7dcb1f82cfd8ffb7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "da265302abb7f67abbdc71a2fae896d3acab0b00d831c1a7dcb1f82cfd8ffb7d" "/opt/rustwide/cargo-home/bin/cargo" "+c79f6bc4fc2389852aeff667626cb3e58adfe71c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "da265302abb7f67abbdc71a2fae896d3acab0b00d831c1a7dcb1f82cfd8ffb7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "da265302abb7f67abbdc71a2fae896d3acab0b00d831c1a7dcb1f82cfd8ffb7d" "/opt/rustwide/cargo-home/bin/cargo" "+c79f6bc4fc2389852aeff667626cb3e58adfe71c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] Checking deser-core v0.10.1 [INFO] [stderr] Checking simdutf8 v0.1.5 [INFO] [stderr] Checking indexmap v2.14.2 [INFO] [stderr] Compiling syn v3.0.6 [INFO] [stderr] Compiling deser-derive v0.10.1 [INFO] [stderr] Checking deser-location v0.10.1 [INFO] [stderr] Checking deser-toml v0.10.1 [INFO] [stderr] Checking deser-yaml v0.10.1 [INFO] [stderr] Checking deser-path v0.10.1 [INFO] [stderr] Checking deser-cbor v0.10.1 [INFO] [stderr] Checking deser-json v0.10.1 [INFO] [stderr] Checking deser-value v0.10.1 (/opt/rustwide/workdir) [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-cbor-0.10.1/src/ser.rs:845:28 [INFO] [stdout] | [INFO] [stdout] 845 | pub const fn canonical(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 848 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0493`. [INFO] [stdout] [INFO] [stderr] error: could not compile `deser-cbor` (lib) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0493]: destructor of `DeserializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-json-0.10.1/src/de.rs:252:27 [INFO] [stdout] | [INFO] [stdout] 252 | pub const fn trailing(mut self, trailing: Trailing) -> DeserializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 255 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `DeserializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-json-0.10.1/src/de.rs:260:32 [INFO] [stdout] | [INFO] [stdout] 260 | pub const fn exact_numbers(mut self, yes: bool) -> DeserializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 263 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-json-0.10.1/src/ser.rs:488:27 [INFO] [stdout] | [INFO] [stdout] 488 | pub const fn trailing(mut self, trailing: Trailing) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 491 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-json-0.10.1/src/ser.rs:496:25 [INFO] [stdout] | [INFO] [stdout] 496 | pub const fn indent(mut self, indent: Indent) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 499 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-json-0.10.1/src/ser.rs:504:26 [INFO] [stdout] | [INFO] [stdout] 504 | pub const fn compact(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 507 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-json-0.10.1/src/ser.rs:512:25 [INFO] [stdout] | [INFO] [stdout] 512 | pub const fn inline(mut self, policy: InlinePolicy) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 515 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-json-0.10.1/src/ser.rs:520:25 [INFO] [stdout] | [INFO] [stdout] 520 | pub const fn pretty(mut self, indent: Indent) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 523 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-json-0.10.1/src/ser.rs:528:36 [INFO] [stdout] | [INFO] [stdout] 528 | pub const fn non_finite_floats(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 531 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0493`. [INFO] [stdout] [INFO] [stderr] error: could not compile `deser-json` (lib) due to 8 previous errors [INFO] [stdout] error[E0493]: destructor of `DeserializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/de.rs:214:26 [INFO] [stdout] | [INFO] [stdout] 214 | pub const fn version(mut self, version: Version) -> DeserializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 217 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `DeserializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/de.rs:222:30 [INFO] [stdout] | [INFO] [stdout] 222 | pub const fn alias_limit(mut self, limit: usize) -> DeserializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 225 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `DeserializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/de.rs:230:29 [INFO] [stdout] | [INFO] [stdout] 230 | pub const fn merge_keys(mut self, yes: bool) -> DeserializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 233 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:605:25 [INFO] [stdout] | [INFO] [stdout] 605 | pub const fn indent(mut self, indent: Indent) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 608 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:613:35 [INFO] [stdout] | [INFO] [stdout] 613 | pub const fn indent_sequences(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 616 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:621:23 [INFO] [stdout] | [INFO] [stdout] 621 | pub const fn flow(mut self, policy: FlowPolicy) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 624 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:629:29 [INFO] [stdout] | [INFO] [stdout] 629 | pub const fn fold_width(mut self, width: Option) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 632 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:637:30 [INFO] [stdout] | [INFO] [stdout] 637 | pub const fn quote_style(mut self, style: QuoteStyle) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 640 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:645:28 [INFO] [stdout] | [INFO] [stdout] 645 | pub const fn quote_all(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 648 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:653:28 [INFO] [stdout] | [INFO] [stdout] 653 | pub const fn multiline(mut self, style: MultilineStyle) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 656 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:661:29 [INFO] [stdout] | [INFO] [stdout] 661 | pub const fn null_style(mut self, style: NullStyle) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 664 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:669:25 [INFO] [stdout] | [INFO] [stdout] 669 | pub const fn compat(mut self, version: Version) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 672 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:677:25 [INFO] [stdout] | [INFO] [stdout] 677 | pub const fn binary(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 680 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:685:32 [INFO] [stdout] | [INFO] [stdout] 685 | pub const fn timestamp_tag(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 688 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:693:33 [INFO] [stdout] | [INFO] [stdout] 693 | pub const fn document_start(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 696 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:701:36 [INFO] [stdout] | [INFO] [stdout] 701 | pub const fn version_directive(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 704 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0493]: destructor of `SerializerConfigBuilder` cannot be evaluated at compile-time [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/deser-yaml-0.10.1/src/ser.rs:709:32 [INFO] [stdout] | [INFO] [stdout] 709 | pub const fn end_documents(mut self, yes: bool) -> SerializerConfigBuilder { [INFO] [stdout] | ^^^^^^^^ the destructor for this type cannot be evaluated in constant functions [INFO] [stdout] ... [INFO] [stdout] 712 | } [INFO] [stdout] | - value is dropped here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0493`. [INFO] [stdout] [INFO] [stderr] error: could not compile `deser-yaml` (lib) due to 17 previous errors [INFO] running `Command { std: "docker" "inspect" "da265302abb7f67abbdc71a2fae896d3acab0b00d831c1a7dcb1f82cfd8ffb7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da265302abb7f67abbdc71a2fae896d3acab0b00d831c1a7dcb1f82cfd8ffb7d", kill_on_drop: false }` [INFO] [stdout] da265302abb7f67abbdc71a2fae896d3acab0b00d831c1a7dcb1f82cfd8ffb7d