[INFO] cloning repository https://github.com/nickmass/nickmass-com [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nickmass/nickmass-com" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickmass%2Fnickmass-com", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickmass%2Fnickmass-com'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 13161b13bf5c63792756ef55d4ab9ef1db5d0ffc [INFO] testing nickmass/nickmass-com against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickmass%2Fnickmass-com" "/workspace/builds/worker-6/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/nickmass/nickmass-com on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/nickmass/nickmass-com [INFO] finished tweaking git repo https://github.com/nickmass/nickmass-com [INFO] tweaked toml for git repo https://github.com/nickmass/nickmass-com written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/nickmass/nickmass-com already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ab03a970f5036970eaf22b560c8be3be03473e6d34dfaec0394b9be5fdc24104 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "ab03a970f5036970eaf22b560c8be3be03473e6d34dfaec0394b9be5fdc24104", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ab03a970f5036970eaf22b560c8be3be03473e6d34dfaec0394b9be5fdc24104", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ab03a970f5036970eaf22b560c8be3be03473e6d34dfaec0394b9be5fdc24104", kill_on_drop: false }` [INFO] [stdout] ab03a970f5036970eaf22b560c8be3be03473e6d34dfaec0394b9be5fdc24104 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 52258a227ffff3def7d6b4f634d59d46c6bfbe7ae4921e8c45e2708772b4086e [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "52258a227ffff3def7d6b4f634d59d46c6bfbe7ae4921e8c45e2708772b4086e", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.14 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling memchr v2.3.0 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling fnv v1.0.6 [INFO] [stderr] Compiling itoa v0.4.5 [INFO] [stderr] Compiling slab v0.4.2 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling bytes v0.5.4 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling proc-macro-nested v0.1.3 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling version_check v0.9.1 [INFO] [stderr] Compiling pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling pin-project-lite v0.1.4 [INFO] [stderr] Compiling siphasher v0.2.3 [INFO] [stderr] Compiling smallvec v1.1.0 [INFO] [stderr] Compiling rustversion v1.0.2 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Compiling matches v0.1.8 [INFO] [stderr] Compiling foreign-types-shared v0.1.1 [INFO] [stderr] Compiling openssl v0.10.26 [INFO] [stderr] Compiling percent-encoding v2.1.0 [INFO] [stderr] Compiling unicode-width v0.1.7 [INFO] [stderr] Compiling try-lock v0.2.2 [INFO] [stderr] Compiling native-tls v0.2.3 [INFO] [stderr] Compiling ryu v1.0.2 [INFO] [stderr] Compiling openssl-probe v0.1.2 [INFO] [stderr] Compiling quick-error v1.2.3 [INFO] [stderr] Compiling tower-service v0.3.0 [INFO] [stderr] Compiling mime v0.3.16 [INFO] [stderr] Compiling base64 v0.11.0 [INFO] [stderr] Compiling safemem v0.3.3 [INFO] [stderr] Compiling askama_escape v0.3.0 [INFO] [stderr] Compiling humansize v1.1.0 [INFO] [stderr] Compiling unicode-segmentation v1.6.0 [INFO] [stderr] Compiling encoding_rs v0.8.22 [INFO] [stderr] Compiling pulldown-cmark v0.6.1 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling ascii v0.9.3 [INFO] [stderr] Compiling utf-8 v0.7.5 [INFO] [stderr] Compiling either v1.5.3 [INFO] [stderr] Compiling regex-syntax v0.6.13 [INFO] [stderr] Compiling termcolor v1.1.0 [INFO] [stderr] Compiling scoped-tls v1.0.0 [INFO] [stderr] Compiling spin v0.5.2 [INFO] [stderr] Compiling urlencoding v1.0.0 [INFO] [stderr] Compiling nom v5.1.0 [INFO] [stderr] Compiling thread_local v1.0.1 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand_jitter v0.1.4 [INFO] [stderr] Compiling unicode-bidi v0.3.4 [INFO] [stderr] Compiling unicode-normalization v0.1.12 [INFO] [stderr] Compiling foreign-types v0.3.2 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling getopts v0.2.21 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling http v0.2.0 [INFO] [stderr] Compiling indexmap v1.3.1 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling humantime v1.3.0 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling num_cpus v1.12.0 [INFO] [stderr] Compiling signal-hook-registry v1.2.0 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling time v0.1.42 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stderr] Compiling want v0.3.0 [INFO] [stderr] Compiling aho-corasick v0.7.6 [INFO] [stderr] Compiling twoway v0.1.8 [INFO] [stderr] Compiling buf_redux v0.8.4 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling combine v3.8.1 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling openssl-sys v0.9.53 [INFO] [stderr] Compiling ring v0.14.6 [INFO] [stderr] Compiling phf_shared v0.7.24 [INFO] [stderr] Compiling mio v0.6.21 [INFO] [stderr] Compiling idna v0.2.0 [INFO] [stderr] Compiling block-buffer v0.7.3 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling mime v0.2.6 [INFO] [stderr] Compiling rand v0.3.23 [INFO] [stderr] Compiling phf v0.7.24 [INFO] [stderr] Compiling input_buffer v0.2.0 [INFO] [stderr] Compiling http v0.1.21 [INFO] [stderr] Compiling url v2.1.1 [INFO] [stderr] Compiling sha-1 v0.8.2 [INFO] [stderr] Compiling rand_chacha v0.2.1 [INFO] [stderr] Compiling mime_guess v2.0.1 [INFO] [stderr] Compiling rust-crypto v0.2.36 [INFO] [stderr] Compiling regex v1.3.3 [INFO] [stderr] Compiling http-body v0.3.1 [INFO] [stderr] Compiling headers-core v0.2.0 [INFO] [stderr] Compiling mio-uds v0.6.7 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling chrono v0.4.10 [INFO] [stderr] Compiling headers v0.3.1 [INFO] [stderr] Compiling phf_codegen v0.7.24 [INFO] [stderr] Compiling mime_guess v1.8.7 [INFO] [stderr] Compiling env_logger v0.7.1 [INFO] [stderr] Compiling tempfile v3.1.0 [INFO] [stderr] Compiling tungstenite v0.9.2 [INFO] [stderr] Compiling syn-mid v0.4.0 [INFO] [stderr] Compiling jwt v0.4.0 [INFO] [stderr] Compiling multipart v0.16.1 [INFO] [stderr] Compiling proc-macro-hack v0.5.11 [INFO] [stderr] Compiling tokio-macros v0.2.3 [INFO] [stderr] Compiling serde_derive v1.0.104 [INFO] [stderr] Compiling pin-project-internal v0.4.7 [INFO] [stderr] Compiling tokio v0.2.10 [INFO] [stderr] Compiling proc-macro-error v0.4.5 [INFO] [stderr] Compiling proc-macro-error-attr v0.4.5 [INFO] [stderr] Compiling futures-macro v0.3.1 [INFO] [stderr] Compiling structopt-derive v0.4.1 [INFO] [stderr] Compiling pin-project v0.4.7 [INFO] [stderr] Compiling futures-util v0.3.1 [INFO] [stderr] Compiling structopt v0.3.8 [INFO] [stderr] Compiling tokio-util v0.2.0 [INFO] [stderr] Compiling tokio-tls v0.3.0 [INFO] [stderr] Compiling futures-executor v0.3.1 [INFO] [stderr] Compiling h2 v0.2.1 [INFO] [stderr] Compiling futures v0.3.1 [INFO] [stderr] Compiling redis v0.15.1 [INFO] [stderr] Compiling serde v1.0.104 [INFO] [stderr] Compiling hyper v0.13.1 [INFO] [stderr] Compiling hyper-tls v0.4.1 [INFO] [stderr] Compiling toml v0.5.6 [INFO] [stderr] Compiling serde_urlencoded v0.6.1 [INFO] [stderr] Compiling serde_json v1.0.45 [INFO] [stderr] Compiling warp v0.2.1 [INFO] [stderr] Compiling reqwest v0.10.1 [INFO] [stderr] Compiling askama_shared v0.9.1 [INFO] [stderr] Compiling askama_derive v0.9.0 [INFO] [stderr] Compiling askama v0.9.0 [INFO] [stderr] Compiling nickmass-com v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `server` [INFO] [stdout] --> src/server.rs:414:9 [INFO] [stdout] | [INFO] [stdout] 414 | let server = warp::serve( [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `get` [INFO] [stdout] --> src/server/users.rs:53:18 [INFO] [stdout] | [INFO] [stdout] 53 | pub async fn get(&mut self, id: u64) -> Result { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5m 57s [INFO] running `Command { std: "docker" "inspect" "52258a227ffff3def7d6b4f634d59d46c6bfbe7ae4921e8c45e2708772b4086e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "52258a227ffff3def7d6b4f634d59d46c6bfbe7ae4921e8c45e2708772b4086e", kill_on_drop: false }` [INFO] [stdout] 52258a227ffff3def7d6b4f634d59d46c6bfbe7ae4921e8c45e2708772b4086e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 6b88215af594f580dd7a2ea0d1a265bb39f9c45db65207ec64322bf32b1da643 [INFO] running `Command { std: "docker" "start" "-a" "6b88215af594f580dd7a2ea0d1a265bb39f9c45db65207ec64322bf32b1da643", kill_on_drop: false }` [INFO] [stderr] Compiling nickmass-com v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `server` [INFO] [stdout] --> src/server.rs:414:9 [INFO] [stdout] | [INFO] [stdout] 414 | let server = warp::serve( [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `get` [INFO] [stdout] --> src/server/users.rs:53:18 [INFO] [stdout] | [INFO] [stdout] 53 | pub async fn get(&mut self, id: u64) -> Result { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 11.41s [INFO] running `Command { std: "docker" "inspect" "6b88215af594f580dd7a2ea0d1a265bb39f9c45db65207ec64322bf32b1da643", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6b88215af594f580dd7a2ea0d1a265bb39f9c45db65207ec64322bf32b1da643", kill_on_drop: false }` [INFO] [stdout] 6b88215af594f580dd7a2ea0d1a265bb39f9c45db65207ec64322bf32b1da643 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] cb29802a1e7622af436d411e48266cfe3ecd861d9b5415166b5b9ed4c4fbbc4d [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "cb29802a1e7622af436d411e48266cfe3ecd861d9b5415166b5b9ed4c4fbbc4d", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `server` [INFO] [stderr] --> src/server.rs:414:9 [INFO] [stderr] | [INFO] [stderr] 414 | let server = warp::serve( [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_server` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `get` [INFO] [stderr] --> src/server/users.rs:53:18 [INFO] [stderr] | [INFO] [stderr] 53 | pub async fn get(&mut self, id: u64) -> Result { [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.33s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/nickmass_com-d35c2946484afcf7 [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 [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "cb29802a1e7622af436d411e48266cfe3ecd861d9b5415166b5b9ed4c4fbbc4d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb29802a1e7622af436d411e48266cfe3ecd861d9b5415166b5b9ed4c4fbbc4d", kill_on_drop: false }` [INFO] [stdout] cb29802a1e7622af436d411e48266cfe3ecd861d9b5415166b5b9ed4c4fbbc4d