[INFO] fetching crate tiktoken-rust 0.2.1... [INFO] checking tiktoken-rust-0.2.1 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1 [INFO] extracting crate tiktoken-rust 0.2.1 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate tiktoken-rust 0.2.1 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate tiktoken-rust 0.2.1 [INFO] finished tweaking crates.io crate tiktoken-rust 0.2.1 [INFO] tweaked toml for crates.io crate tiktoken-rust 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 163 packages to latest compatible versions [INFO] [stderr] Adding addr2line v0.22.0 (latest: v0.24.1) [INFO] [stderr] Adding base64 v0.21.7 (latest: v0.22.1) [INFO] [stderr] Adding bit-set v0.5.3 (latest: v0.8.0) [INFO] [stderr] Adding bit-vec v0.6.3 (latest: v0.8.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.6.0) [INFO] [stderr] Adding core-foundation v0.9.4 (latest: v0.10.0) [INFO] [stderr] Adding fancy-regex v0.11.0 (latest: v0.13.0) [INFO] [stderr] Adding foreign-types v0.3.2 (latest: v0.5.0) [INFO] [stderr] Adding foreign-types-shared v0.1.1 (latest: v0.3.1) [INFO] [stderr] Adding generic-array v0.14.7 (latest: v1.1.0) [INFO] [stderr] Adding gimli v0.29.0 (latest: v0.31.0) [INFO] [stderr] Adding h2 v0.3.26 (latest: v0.4.6) [INFO] [stderr] Adding hermit-abi v0.3.9 (latest: v0.4.0) [INFO] [stderr] Adding http v0.2.12 (latest: v1.1.0) [INFO] [stderr] Adding http-body v0.4.6 (latest: v1.0.1) [INFO] [stderr] Adding hyper v0.14.30 (latest: v1.4.1) [INFO] [stderr] Adding hyper-tls v0.5.0 (latest: v0.6.0) [INFO] [stderr] Adding idna v0.5.0 (latest: v1.0.2) [INFO] [stderr] Adding linux-raw-sys v0.4.14 (latest: v0.6.5) [INFO] [stderr] Adding miniz_oxide v0.7.4 (latest: v0.8.0) [INFO] [stderr] Adding reqwest v0.11.27 (latest: v0.12.7) [INFO] [stderr] Adding rustc-hash v1.1.0 (latest: v2.0.0) [INFO] [stderr] Adding rustls-pemfile v1.0.4 (latest: v2.1.3) [INFO] [stderr] Adding sync_wrapper v0.1.2 (latest: v1.0.1) [INFO] [stderr] Adding system-configuration v0.5.1 (latest: v0.6.1) [INFO] [stderr] Adding system-configuration-sys v0.5.0 (latest: v0.6.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1) [INFO] [stderr] Adding windows-sys v0.48.0 (latest: v0.59.0) [INFO] [stderr] Adding windows-sys v0.52.0 (latest: v0.59.0) [INFO] [stderr] Adding windows-targets v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_i686_gnu v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_i686_msvc v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding winreg v0.50.0 (latest: v0.52.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded uuid-macro-internal v1.10.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 806683f53b4cb9f18662e52b0c868d4daba1d01df424f8ec0ae8d6f9430971cb [INFO] running `Command { std: "docker" "start" "-a" "806683f53b4cb9f18662e52b0c868d4daba1d01df424f8ec0ae8d6f9430971cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "806683f53b4cb9f18662e52b0c868d4daba1d01df424f8ec0ae8d6f9430971cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "806683f53b4cb9f18662e52b0c868d4daba1d01df424f8ec0ae8d6f9430971cb", kill_on_drop: false }` [INFO] [stdout] 806683f53b4cb9f18662e52b0c868d4daba1d01df424f8ec0ae8d6f9430971cb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] aa1898a04917b0a62605cfc50f22fd3ca73af4afb9468f70a3e3c483dcbaa884 [INFO] running `Command { std: "docker" "start" "-a" "aa1898a04917b0a62605cfc50f22fd3ca73af4afb9468f70a3e3c483dcbaa884", kill_on_drop: false }` [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stderr] Checking tokio v1.40.0 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Checking serde_urlencoded v0.7.1 [INFO] [stderr] Checking serde_json v1.0.127 [INFO] [stderr] Checking bit-set v0.5.3 [INFO] [stderr] Checking regex v1.10.6 [INFO] [stderr] Checking bstr v1.10.0 [INFO] [stderr] Checking fancy-regex v0.11.0 [INFO] [stderr] Compiling openssl-macros v0.1.1 [INFO] [stderr] Compiling zerocopy-derive v0.7.35 [INFO] [stderr] Compiling thiserror-impl v1.0.63 [INFO] [stderr] Compiling uuid-macro-internal v1.10.0 [INFO] [stderr] Checking openssl v0.10.66 [INFO] [stderr] Checking zerocopy v0.7.35 [INFO] [stderr] Checking thiserror v1.0.63 [INFO] [stderr] Checking tokio-util v0.7.11 [INFO] [stderr] Checking ppv-lite86 v0.2.20 [INFO] [stderr] Checking h2 v0.3.26 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking uuid v1.10.0 [INFO] [stderr] Checking native-tls v0.2.12 [INFO] [stderr] Checking tokio-native-tls v0.3.1 [INFO] [stderr] Checking hyper v0.14.30 [INFO] [stderr] Checking hyper-tls v0.5.0 [INFO] [stderr] Checking reqwest v0.11.27 [INFO] [stderr] Checking tiktoken-rust v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `case` [INFO] [stdout] --> tests/test_simple.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | let case = b" \x850"; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_case` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.00s [INFO] running `Command { std: "docker" "inspect" "aa1898a04917b0a62605cfc50f22fd3ca73af4afb9468f70a3e3c483dcbaa884", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa1898a04917b0a62605cfc50f22fd3ca73af4afb9468f70a3e3c483dcbaa884", kill_on_drop: false }` [INFO] [stdout] aa1898a04917b0a62605cfc50f22fd3ca73af4afb9468f70a3e3c483dcbaa884 [INFO] checking tiktoken-rust-0.2.1 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1 [INFO] extracting crate tiktoken-rust 0.2.1 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate tiktoken-rust 0.2.1 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate tiktoken-rust 0.2.1 [INFO] finished tweaking crates.io crate tiktoken-rust 0.2.1 [INFO] tweaked toml for crates.io crate tiktoken-rust 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 163 packages to latest compatible versions [INFO] [stderr] Adding addr2line v0.22.0 (latest: v0.24.1) [INFO] [stderr] Adding base64 v0.21.7 (latest: v0.22.1) [INFO] [stderr] Adding bit-set v0.5.3 (latest: v0.8.0) [INFO] [stderr] Adding bit-vec v0.6.3 (latest: v0.8.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.6.0) [INFO] [stderr] Adding core-foundation v0.9.4 (latest: v0.10.0) [INFO] [stderr] Adding fancy-regex v0.11.0 (latest: v0.13.0) [INFO] [stderr] Adding foreign-types v0.3.2 (latest: v0.5.0) [INFO] [stderr] Adding foreign-types-shared v0.1.1 (latest: v0.3.1) [INFO] [stderr] Adding generic-array v0.14.7 (latest: v1.1.0) [INFO] [stderr] Adding gimli v0.29.0 (latest: v0.31.0) [INFO] [stderr] Adding h2 v0.3.26 (latest: v0.4.6) [INFO] [stderr] Adding hermit-abi v0.3.9 (latest: v0.4.0) [INFO] [stderr] Adding http v0.2.12 (latest: v1.1.0) [INFO] [stderr] Adding http-body v0.4.6 (latest: v1.0.1) [INFO] [stderr] Adding hyper v0.14.30 (latest: v1.4.1) [INFO] [stderr] Adding hyper-tls v0.5.0 (latest: v0.6.0) [INFO] [stderr] Adding idna v0.5.0 (latest: v1.0.2) [INFO] [stderr] Adding linux-raw-sys v0.4.14 (latest: v0.6.5) [INFO] [stderr] Adding miniz_oxide v0.7.4 (latest: v0.8.0) [INFO] [stderr] Adding reqwest v0.11.27 (latest: v0.12.7) [INFO] [stderr] Adding rustc-hash v1.1.0 (latest: v2.0.0) [INFO] [stderr] Adding rustls-pemfile v1.0.4 (latest: v2.1.3) [INFO] [stderr] Adding sync_wrapper v0.1.2 (latest: v1.0.1) [INFO] [stderr] Adding system-configuration v0.5.1 (latest: v0.6.1) [INFO] [stderr] Adding system-configuration-sys v0.5.0 (latest: v0.6.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1) [INFO] [stderr] Adding windows-sys v0.48.0 (latest: v0.59.0) [INFO] [stderr] Adding windows-sys v0.52.0 (latest: v0.59.0) [INFO] [stderr] Adding windows-targets v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_i686_gnu v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_i686_msvc v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.6) [INFO] [stderr] Adding winreg v0.50.0 (latest: v0.52.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c63e7c38f981e474d6b20ee0e72e8a66a52efb923111b89a3c7aab0ffdd15884 [INFO] running `Command { std: "docker" "start" "-a" "c63e7c38f981e474d6b20ee0e72e8a66a52efb923111b89a3c7aab0ffdd15884", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c63e7c38f981e474d6b20ee0e72e8a66a52efb923111b89a3c7aab0ffdd15884", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c63e7c38f981e474d6b20ee0e72e8a66a52efb923111b89a3c7aab0ffdd15884", kill_on_drop: false }` [INFO] [stdout] c63e7c38f981e474d6b20ee0e72e8a66a52efb923111b89a3c7aab0ffdd15884 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5507fa3053f8c9c9e381a531966c3ef7be40f0a563131c765ea03b74c2b2dc1c [INFO] running `Command { std: "docker" "start" "-a" "5507fa3053f8c9c9e381a531966c3ef7be40f0a563131c765ea03b74c2b2dc1c", kill_on_drop: false }` [INFO] [stderr] Checking tokio v1.40.0 [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Checking serde_urlencoded v0.7.1 [INFO] [stderr] Checking serde_json v1.0.127 [INFO] [stderr] Checking bit-set v0.5.3 [INFO] [stderr] Checking regex v1.10.6 [INFO] [stderr] Checking bstr v1.10.0 [INFO] [stderr] Checking fancy-regex v0.11.0 [INFO] [stderr] Compiling openssl-macros v0.1.1 [INFO] [stderr] Compiling zerocopy-derive v0.7.35 [INFO] [stderr] Compiling thiserror-impl v1.0.63 [INFO] [stderr] Compiling uuid-macro-internal v1.10.0 [INFO] [stderr] Checking tokio-util v0.7.11 [INFO] [stderr] Checking openssl v0.10.66 [INFO] [stderr] Checking zerocopy v0.7.35 [INFO] [stderr] Checking h2 v0.3.26 [INFO] [stderr] Checking thiserror v1.0.63 [INFO] [stderr] Checking ppv-lite86 v0.2.20 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking uuid v1.10.0 [INFO] [stderr] Checking hyper v0.14.30 [INFO] [stderr] Checking native-tls v0.2.12 [INFO] [stderr] Checking tokio-native-tls v0.3.1 [INFO] [stderr] Checking hyper-tls v0.5.0 [INFO] [stderr] Checking reqwest v0.11.27 [INFO] [stderr] Checking tiktoken-rust v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `case` [INFO] [stdout] --> tests/test_simple.rs:254:9 [INFO] [stdout] | [INFO] [stdout] 254 | let case = b" \x850"; [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_case` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.11s [INFO] running `Command { std: "docker" "inspect" "5507fa3053f8c9c9e381a531966c3ef7be40f0a563131c765ea03b74c2b2dc1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5507fa3053f8c9c9e381a531966c3ef7be40f0a563131c765ea03b74c2b2dc1c", kill_on_drop: false }` [INFO] [stdout] 5507fa3053f8c9c9e381a531966c3ef7be40f0a563131c765ea03b74c2b2dc1c