[INFO] fetching crate crosup-installers 0.2.0... [INFO] testing crosup-installers-0.2.0 against 1.77.0 for beta-1.78-1 [INFO] extracting crate crosup-installers 0.2.0 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate crosup-installers 0.2.0 on toolchain 1.77.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate crosup-installers 0.2.0 [INFO] finished tweaking crates.io crate crosup-installers 0.2.0 [INFO] tweaked toml for crates.io crate crosup-installers 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.77.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded kstring v2.0.0 [INFO] [stderr] Downloaded crosup-ssh v0.1.0 [INFO] [stderr] Downloaded os-release v0.1.0 [INFO] [stderr] Downloaded crosup-types v0.2.0 [INFO] [stderr] Downloaded ssh2 v0.9.4 [INFO] [stderr] Downloaded crosup-macros v0.2.0 [INFO] [stderr] Downloaded cbitset v0.2.0 [INFO] [stderr] Downloaded crosup-nix v0.1.1 [INFO] [stderr] Downloaded rowan v0.12.6 [INFO] [stderr] Downloaded crossbeam-channel v0.4.4 [INFO] [stderr] Downloaded rnix v0.10.2 [INFO] [stderr] Downloaded rnix v0.11.0 [INFO] [stderr] Downloaded nix-editor v0.3.0 [INFO] [stderr] Downloaded hcl-rs v0.14.6 [INFO] [stderr] Downloaded countme v2.0.4 [INFO] [stderr] Downloaded smol_str v0.1.24 [INFO] [stderr] Downloaded nixpkgs-fmt v1.3.0 [INFO] [stderr] Downloaded vecmap-rs v0.1.15 [INFO] [stderr] Downloaded hcl-primitives v0.1.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6734c0e4c0289ab07508eb6dd6083213dce611bb3fccd911a82e2886682c681f [INFO] running `Command { std: "docker" "start" "-a" "6734c0e4c0289ab07508eb6dd6083213dce611bb3fccd911a82e2886682c681f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6734c0e4c0289ab07508eb6dd6083213dce611bb3fccd911a82e2886682c681f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6734c0e4c0289ab07508eb6dd6083213dce611bb3fccd911a82e2886682c681f", kill_on_drop: false }` [INFO] [stdout] 6734c0e4c0289ab07508eb6dd6083213dce611bb3fccd911a82e2886682c681f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f94795821af6d503964ea48fb03a3bf686651ba3ee39f45cd6b801280024b677 [INFO] running `Command { std: "docker" "start" "-a" "f94795821af6d503964ea48fb03a3bf686651ba3ee39f45cd6b801280024b677", kill_on_drop: false }` [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling memchr v2.7.1 [INFO] [stderr] Compiling parking v2.2.0 [INFO] [stderr] Compiling futures-io v0.3.30 [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Compiling value-bag v1.8.1 [INFO] [stderr] Compiling subtle v2.4.1 [INFO] [stderr] Compiling fastrand v2.0.2 [INFO] [stderr] Compiling opaque-debug v0.3.1 [INFO] [stderr] Compiling standback v0.2.17 [INFO] [stderr] Compiling tracing-core v0.1.32 [INFO] [stderr] Compiling rustix v0.38.32 [INFO] [stderr] Compiling proc-macro-hack v0.5.20+deprecated [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling proc-macro2 v1.0.79 [INFO] [stderr] Compiling ring v0.16.20 [INFO] [stderr] Compiling bitflags v2.5.0 [INFO] [stderr] Compiling io-lifetimes v1.0.11 [INFO] [stderr] Compiling futures-lite v2.3.0 [INFO] [stderr] Compiling log v0.4.21 [INFO] [stderr] Compiling tracing v0.1.40 [INFO] [stderr] Compiling linux-raw-sys v0.4.13 [INFO] [stderr] Compiling hashbrown v0.14.3 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Compiling quote v1.0.35 [INFO] [stderr] Compiling polling v2.8.0 [INFO] [stderr] Compiling lock_api v0.4.11 [INFO] [stderr] Compiling rustix v0.37.27 [INFO] [stderr] Compiling event-listener v2.5.3 [INFO] [stderr] Compiling cpuid-bool v0.2.0 [INFO] [stderr] Compiling syn v2.0.55 [INFO] [stderr] Compiling cipher v0.2.5 [INFO] [stderr] Compiling concurrent-queue v2.4.0 [INFO] [stderr] Compiling digest v0.9.0 [INFO] [stderr] Compiling universal-hash v0.4.1 [INFO] [stderr] Compiling async-task v4.7.0 [INFO] [stderr] Compiling untrusted v0.7.1 [INFO] [stderr] Compiling atomic-waker v1.1.2 [INFO] [stderr] Compiling const_fn v0.4.9 [INFO] [stderr] Compiling event-listener v4.0.3 [INFO] [stderr] Compiling event-listener v5.2.0 [INFO] [stderr] Compiling spin v0.5.2 [INFO] [stderr] Compiling smallvec v1.13.2 [INFO] [stderr] Compiling piper v0.2.1 [INFO] [stderr] Compiling polyval v0.4.5 [INFO] [stderr] Compiling event-listener-strategy v0.4.0 [INFO] [stderr] Compiling aes-soft v0.6.4 [INFO] [stderr] Compiling event-listener-strategy v0.5.0 [INFO] [stderr] Compiling async-lock v3.3.0 [INFO] [stderr] Compiling crypto-mac v0.10.1 [INFO] [stderr] Compiling async-io v1.13.0 [INFO] [stderr] Compiling time v0.2.27 [INFO] [stderr] Compiling async-channel v2.2.0 [INFO] [stderr] Compiling scopeguard v1.2.0 [INFO] [stderr] Compiling lexical-core v0.7.6 [INFO] [stderr] Compiling fastrand v1.9.0 [INFO] [stderr] Compiling waker-fn v1.1.1 [INFO] [stderr] Compiling linux-raw-sys v0.3.8 [INFO] [stderr] Compiling anyhow v1.0.81 [INFO] [stderr] Compiling aes v0.6.0 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling hmac v0.10.1 [INFO] [stderr] Compiling futures-lite v1.13.0 [INFO] [stderr] Compiling ghash v0.3.1 [INFO] [stderr] Compiling ctr v0.6.0 [INFO] [stderr] Compiling async-lock v2.8.0 [INFO] [stderr] Compiling aead v0.3.2 [INFO] [stderr] Compiling block-buffer v0.9.0 [INFO] [stderr] Compiling socket2 v0.4.10 [INFO] [stderr] Compiling nom v5.1.3 [INFO] [stderr] Compiling openssl-src v300.2.3+3.2.1 [INFO] [stderr] Compiling unicase v2.7.0 [INFO] [stderr] Compiling memoffset v0.6.5 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling async-executor v1.8.0 [INFO] [stderr] Compiling blocking v1.5.1 [INFO] [stderr] Compiling cookie v0.14.4 [INFO] [stderr] Compiling ucd-trie v0.1.6 [INFO] [stderr] Compiling arrayvec v0.5.2 [INFO] [stderr] Compiling time-macros-impl v0.1.2 [INFO] [stderr] Compiling rustc-hash v1.1.0 [INFO] [stderr] Compiling openssl-sys v0.9.101 [INFO] [stderr] Compiling futures-channel v0.3.30 [INFO] [stderr] Compiling sha2 v0.9.9 [INFO] [stderr] Compiling aes-gcm v0.8.0 [INFO] [stderr] Compiling hkdf v0.10.0 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling async-channel v1.9.0 [INFO] [stderr] Compiling aho-corasick v1.1.3 [INFO] [stderr] Compiling kv-log-macro v1.0.7 [INFO] [stderr] Compiling libz-sys v1.1.16 [INFO] [stderr] Compiling memoffset v0.9.0 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling parking_lot_core v0.9.9 [INFO] [stderr] Compiling http-types v2.12.0 [INFO] [stderr] Compiling regex-syntax v0.8.2 [INFO] [stderr] Compiling utf8parse v0.2.1 [INFO] [stderr] Compiling anstyle-parse v0.2.3 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling time-macros v0.1.1 [INFO] [stderr] Compiling crossbeam-epoch v0.9.18 [INFO] [stderr] Compiling bstr v1.9.1 [INFO] [stderr] Compiling colorchoice v1.0.0 [INFO] [stderr] Compiling infer v0.2.3 [INFO] [stderr] Compiling hashbrown v0.9.1 [INFO] [stderr] Compiling base64 v0.12.3 [INFO] [stderr] Compiling unicode-width v0.1.11 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling parking_lot_core v0.8.6 [INFO] [stderr] Compiling countme v2.0.4 [INFO] [stderr] Compiling anstyle v1.0.6 [INFO] [stderr] Compiling anstyle-query v1.0.2 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling cbitset v0.2.0 [INFO] [stderr] Compiling anstream v0.6.13 [INFO] [stderr] Compiling walkdir v2.5.0 [INFO] [stderr] Compiling regex-automata v0.4.6 [INFO] [stderr] Compiling webpki v0.21.4 [INFO] [stderr] Compiling sct v0.6.1 [INFO] [stderr] Compiling crossbeam-deque v0.8.5 [INFO] [stderr] Compiling rustls v0.18.1 [INFO] [stderr] Compiling webpki-roots v0.20.0 [INFO] [stderr] Compiling mime_guess v2.0.4 [INFO] [stderr] Compiling async-dup v1.2.4 [INFO] [stderr] Compiling crossbeam-queue v0.3.11 [INFO] [stderr] Compiling libssh2-sys v0.3.0 [INFO] [stderr] Compiling num_cpus v1.16.0 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling instant v0.1.12 [INFO] [stderr] Compiling tokio v1.36.0 [INFO] [stderr] Compiling countme v3.0.1 [INFO] [stderr] Compiling heck v0.5.0 [INFO] [stderr] Compiling clap_lex v0.7.0 [INFO] [stderr] Compiling strsim v0.11.0 [INFO] [stderr] Compiling clap v2.34.0 [INFO] [stderr] Compiling clap_builder v4.5.2 [INFO] [stderr] Compiling dashmap v5.5.3 [INFO] [stderr] Compiling crossbeam-channel v0.4.4 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling mime v0.3.17 [INFO] [stderr] Compiling polling v3.6.0 [INFO] [stderr] Compiling owo-colors v3.5.0 [INFO] [stderr] Compiling parking_lot v0.11.2 [INFO] [stderr] Compiling os-release v0.1.0 [INFO] [stderr] Compiling crosup-macros v0.2.0 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Compiling thiserror-impl v1.0.58 [INFO] [stderr] Compiling async-io v2.3.2 [INFO] [stderr] Compiling futures-macro v0.3.30 [INFO] [stderr] Compiling pin-project-internal v1.1.5 [INFO] [stderr] Compiling globset v0.4.14 [INFO] [stderr] Compiling async-trait v0.1.79 [INFO] [stderr] Compiling async-tls v0.10.0 [INFO] [stderr] Compiling clap_derive v4.5.4 [INFO] [stderr] Compiling async-global-executor v2.4.1 [INFO] [stderr] Compiling ignore v0.4.22 [INFO] [stderr] Compiling async-std v1.12.0 [INFO] [stderr] Compiling futures-util v0.3.30 [INFO] [stderr] Compiling thiserror v1.0.58 [INFO] [stderr] Compiling pest v2.7.8 [INFO] [stderr] Compiling pin-project v1.1.5 [INFO] [stderr] Compiling pest_meta v2.7.8 [INFO] [stderr] Compiling clap v4.5.4 [INFO] [stderr] Compiling pest_generator v2.7.8 [INFO] [stderr] Compiling pest_derive v2.7.8 [INFO] [stderr] Compiling futures-executor v0.3.30 [INFO] [stderr] Compiling futures v0.3.30 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Compiling text-size v1.1.1 [INFO] [stderr] Compiling serde_qs v0.8.5 [INFO] [stderr] Compiling url v2.5.0 [INFO] [stderr] Compiling serde_urlencoded v0.7.1 [INFO] [stderr] Compiling config v0.10.1 [INFO] [stderr] Compiling smol_str v0.1.24 [INFO] [stderr] Compiling indexmap v2.2.6 [INFO] [stderr] Compiling vecmap-rs v0.1.15 [INFO] [stderr] Compiling hcl-primitives v0.1.2 [INFO] [stderr] Compiling rowan v0.12.6 [INFO] [stderr] Compiling rowan v0.15.15 [INFO] [stderr] Compiling deadpool v0.7.0 [INFO] [stderr] Compiling rnix v0.10.2 [INFO] [stderr] Compiling hcl-rs v0.14.6 [INFO] [stderr] Compiling rnix v0.11.0 [INFO] [stderr] Compiling nixpkgs-fmt v1.3.0 [INFO] [stderr] Compiling nix-editor v0.3.0 [INFO] [stderr] Compiling async-h1 v2.3.4 [INFO] [stderr] Compiling http-client v6.5.3 [INFO] [stderr] Compiling crosup-types v0.2.0 [INFO] [stderr] Compiling surf v2.3.2 [INFO] [stderr] Compiling crosup-nix v0.1.1 [INFO] [stderr] Compiling ssh2 v0.9.4 [INFO] [stderr] Compiling crosup-ssh v0.1.0 [INFO] [stderr] Compiling crosup-installers v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 00s [INFO] running `Command { std: "docker" "inspect" "f94795821af6d503964ea48fb03a3bf686651ba3ee39f45cd6b801280024b677", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f94795821af6d503964ea48fb03a3bf686651ba3ee39f45cd6b801280024b677", kill_on_drop: false }` [INFO] [stdout] f94795821af6d503964ea48fb03a3bf686651ba3ee39f45cd6b801280024b677 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1bf5297c109db1bebc83e49805bc2995aed860167c679e4be65727b148e8835e [INFO] running `Command { std: "docker" "start" "-a" "1bf5297c109db1bebc83e49805bc2995aed860167c679e4be65727b148e8835e", kill_on_drop: false }` [INFO] [stderr] Compiling crosup-installers v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.50s [INFO] running `Command { std: "docker" "inspect" "1bf5297c109db1bebc83e49805bc2995aed860167c679e4be65727b148e8835e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1bf5297c109db1bebc83e49805bc2995aed860167c679e4be65727b148e8835e", kill_on_drop: false }` [INFO] [stdout] 1bf5297c109db1bebc83e49805bc2995aed860167c679e4be65727b148e8835e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.77.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 4859e5f596cb311e34762fc778546d8408d5f2ead6baf981333cfb33ec4ce9d6 [INFO] running `Command { std: "docker" "start" "-a" "4859e5f596cb311e34762fc778546d8408d5f2ead6baf981333cfb33ec4ce9d6", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.17s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/crosup_installers-f31ec5a30e0d895c) [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] [stderr] Doc-tests crosup-installers [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" "4859e5f596cb311e34762fc778546d8408d5f2ead6baf981333cfb33ec4ce9d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4859e5f596cb311e34762fc778546d8408d5f2ead6baf981333cfb33ec4ce9d6", kill_on_drop: false }` [INFO] [stdout] 4859e5f596cb311e34762fc778546d8408d5f2ead6baf981333cfb33ec4ce9d6