[INFO] cloning repository https://github.com/WonkySpecs/vocabulearn [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WonkySpecs/vocabulearn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWonkySpecs%2Fvocabulearn", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWonkySpecs%2Fvocabulearn'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 435e355071c8d736b8b5f57716cc890d01e3aea2 [INFO] testing WonkySpecs/vocabulearn against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWonkySpecs%2Fvocabulearn" "/workspace/builds/worker-50/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/WonkySpecs/vocabulearn on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/WonkySpecs/vocabulearn [INFO] finished tweaking git repo https://github.com/WonkySpecs/vocabulearn [INFO] tweaked toml for git repo https://github.com/WonkySpecs/vocabulearn written to /workspace/builds/worker-50/source/Cargo.toml [INFO] crate git repo https://github.com/WonkySpecs/vocabulearn already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b53216051317620add5437963e041825732cf692a300bbff7919b69e9aa52e93 [INFO] running `Command { std: "docker" "start" "-a" "b53216051317620add5437963e041825732cf692a300bbff7919b69e9aa52e93", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b53216051317620add5437963e041825732cf692a300bbff7919b69e9aa52e93", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b53216051317620add5437963e041825732cf692a300bbff7919b69e9aa52e93", kill_on_drop: false }` [INFO] [stdout] b53216051317620add5437963e041825732cf692a300bbff7919b69e9aa52e93 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 105021600c97a2e2baed234847e9d168a3eba49de97ba16fcaaf36f2cf5d6c74 [INFO] running `Command { std: "docker" "start" "-a" "105021600c97a2e2baed234847e9d168a3eba49de97ba16fcaaf36f2cf5d6c74", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.65 [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Compiling autocfg v0.1.6 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling getrandom v0.1.13 [INFO] [stderr] Compiling serde v1.0.101 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling ppv-lite86 v0.2.6 [INFO] [stderr] Compiling unicode-width v0.1.6 [INFO] [stderr] Compiling itoa v0.4.4 [INFO] [stderr] Compiling vec_map v0.8.1 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling c2-chacha v0.2.3 [INFO] [stderr] Compiling regex-automata v0.1.8 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling time v0.1.42 [INFO] [stderr] Compiling atty v0.2.13 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling csv-core v0.1.6 [INFO] [stderr] Compiling rand_chacha v0.2.1 [INFO] [stderr] Compiling rand v0.7.2 [INFO] [stderr] Compiling serde_derive v1.0.101 [INFO] [stderr] Compiling bstr v0.2.8 [INFO] [stderr] Compiling chrono v0.4.9 [INFO] [stderr] Compiling csv v1.1.1 [INFO] [stderr] Compiling vocabulearn v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/data.rs:109:57 [INFO] [stdout] | [INFO] [stdout] 109 | fn save_vocab(&self) -> std::result::Result<(), Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `labels` [INFO] [stdout] --> src/data.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 46 | labels: HashMap, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `label_mapping` [INFO] [stdout] --> src/data.rs:47:5 [INFO] [stdout] | [INFO] [stdout] 47 | label_mapping: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `labels_file` [INFO] [stdout] --> src/data.rs:49:5 [INFO] [stdout] | [INFO] [stdout] 49 | labels_file: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `map_file` [INFO] [stdout] --> src/data.rs:50:5 [INFO] [stdout] | [INFO] [stdout] 50 | map_file: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/data.rs:106:9 [INFO] [stdout] | [INFO] [stdout] 106 | self.save_vocab(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/data.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | fs::rename(&self.vocab_file, archive_file); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/data.rs:119:9 [INFO] [stdout] | [INFO] [stdout] 119 | fs::rename(new_file, &self.vocab_file); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 17.11s [INFO] running `Command { std: "docker" "inspect" "105021600c97a2e2baed234847e9d168a3eba49de97ba16fcaaf36f2cf5d6c74", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "105021600c97a2e2baed234847e9d168a3eba49de97ba16fcaaf36f2cf5d6c74", kill_on_drop: false }` [INFO] [stdout] 105021600c97a2e2baed234847e9d168a3eba49de97ba16fcaaf36f2cf5d6c74 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1be3b8ec316f8cea10e0cf688dd0fb50ce39d0117266eed8f5d40fa4eb4c4115 [INFO] running `Command { std: "docker" "start" "-a" "1be3b8ec316f8cea10e0cf688dd0fb50ce39d0117266eed8f5d40fa4eb4c4115", kill_on_drop: false }` [INFO] [stderr] Compiling vocabulearn v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/data.rs:109:57 [INFO] [stdout] | [INFO] [stdout] 109 | fn save_vocab(&self) -> std::result::Result<(), Box> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `labels` [INFO] [stdout] --> src/data.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 46 | labels: HashMap, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `label_mapping` [INFO] [stdout] --> src/data.rs:47:5 [INFO] [stdout] | [INFO] [stdout] 47 | label_mapping: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `labels_file` [INFO] [stdout] --> src/data.rs:49:5 [INFO] [stdout] | [INFO] [stdout] 49 | labels_file: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `map_file` [INFO] [stdout] --> src/data.rs:50:5 [INFO] [stdout] | [INFO] [stdout] 50 | map_file: String, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/data.rs:106:9 [INFO] [stdout] | [INFO] [stdout] 106 | self.save_vocab(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/data.rs:118:9 [INFO] [stdout] | [INFO] [stdout] 118 | fs::rename(&self.vocab_file, archive_file); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/data.rs:119:9 [INFO] [stdout] | [INFO] [stdout] 119 | fs::rename(new_file, &self.vocab_file); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.80s [INFO] running `Command { std: "docker" "inspect" "1be3b8ec316f8cea10e0cf688dd0fb50ce39d0117266eed8f5d40fa4eb4c4115", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1be3b8ec316f8cea10e0cf688dd0fb50ce39d0117266eed8f5d40fa4eb4c4115", kill_on_drop: false }` [INFO] [stdout] 1be3b8ec316f8cea10e0cf688dd0fb50ce39d0117266eed8f5d40fa4eb4c4115 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 05976fa5b05e9531685f78ef2b00a937d2e7ff4125d54f15e6d2d01aa63221d7 [INFO] running `Command { std: "docker" "start" "-a" "05976fa5b05e9531685f78ef2b00a937d2e7ff4125d54f15e6d2d01aa63221d7", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/data.rs:109:57 [INFO] [stderr] | [INFO] [stderr] 109 | fn save_vocab(&self) -> std::result::Result<(), Box> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] [INFO] [stderr] warning: field is never read: `labels` [INFO] [stderr] --> src/data.rs:46:5 [INFO] [stderr] | [INFO] [stderr] 46 | labels: HashMap, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `label_mapping` [INFO] [stderr] --> src/data.rs:47:5 [INFO] [stderr] | [INFO] [stderr] 47 | label_mapping: Vec, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `labels_file` [INFO] [stderr] --> src/data.rs:49:5 [INFO] [stderr] | [INFO] [stderr] 49 | labels_file: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `map_file` [INFO] [stderr] --> src/data.rs:50:5 [INFO] [stderr] | [INFO] [stderr] 50 | map_file: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/data.rs:106:9 [INFO] [stderr] | [INFO] [stderr] 106 | self.save_vocab(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/data.rs:118:9 [INFO] [stderr] | [INFO] [stderr] 118 | fs::rename(&self.vocab_file, archive_file); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `Result` that must be used [INFO] [stderr] --> src/data.rs:119:9 [INFO] [stderr] | [INFO] [stderr] 119 | fs::rename(new_file, &self.vocab_file); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: `vocabulearn` (bin "vocabulearn" test) generated 8 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.25s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/vocabulearn-22be32474399d265) [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" "05976fa5b05e9531685f78ef2b00a937d2e7ff4125d54f15e6d2d01aa63221d7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "05976fa5b05e9531685f78ef2b00a937d2e7ff4125d54f15e6d2d01aa63221d7", kill_on_drop: false }` [INFO] [stdout] 05976fa5b05e9531685f78ef2b00a937d2e7ff4125d54f15e6d2d01aa63221d7