[INFO] fetching crate monacoin 0.27.1-pre...
[INFO] checking monacoin-0.27.1-pre against nightly-2024-02-05 for check-cfg-2
[INFO] extracting crate monacoin 0.27.1-pre into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate monacoin 0.27.1-pre on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate monacoin 0.27.1-pre
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate monacoin 0.27.1-pre
[INFO] tweaked toml for crates.io crate monacoin 0.27.1-pre written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate monacoin 0.27.1-pre 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" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded keccak v0.1.0
[INFO] [stderr]   Downloaded autocfg v0.1.7
[INFO] [stderr]   Downloaded cc v1.0.72
[INFO] [stderr]   Downloaded subtle v1.0.0
[INFO] [stderr]   Downloaded hmac v0.7.1
[INFO] [stderr]   Downloaded crypto-mac v0.7.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.16
[INFO] [stderr]   Downloaded blake-hash v0.4.1
[INFO] [stderr]   Downloaded bech32 v0.8.1
[INFO] [stderr]   Downloaded secp256k1 v0.20.3
[INFO] [stderr]   Downloaded core2 v0.3.3
[INFO] [stderr]   Downloaded bitcoin_hashes v0.10.0
[INFO] [stderr]   Downloaded libc v0.2.113
[INFO] [stderr]   Downloaded syn v1.0.86
[INFO] [stderr]   Downloaded scrypt v0.2.0
[INFO] [stderr]   Downloaded groestl v0.9.0
[INFO] [stderr]   Downloaded secp256k1-sys v0.4.2
[INFO] [stderr]   Downloaded hashbrown v0.8.2
[INFO] [stderr]   Downloaded ryu v1.0.4
[INFO] [stderr]   Downloaded memchr v2.4.1
[INFO] [stderr]   Downloaded serde_json v1.0.44
[INFO] [stderr]   Downloaded serde_derive v1.0.134
[INFO] [stderr]   Downloaded ahash v0.3.8
[INFO] [stderr]   Downloaded quote v1.0.14
[INFO] [stderr]   Downloaded proc-macro2 v1.0.36
[INFO] [stderr]   Downloaded base64-compat v1.0.0
[INFO] [stderr]   Downloaded generic-array v0.14.5
[INFO] [stderr]   Downloaded cipher v0.2.5
[INFO] [stderr]   Downloaded threefish-cipher v0.4.0
[INFO] [stderr]   Downloaded pbkdf2 v0.3.0
[INFO] [stderr]   Downloaded skein-hash v0.3.1
[INFO] [stderr]   Downloaded serde_test v1.0.134
[INFO] [stderr]   Downloaded lyra2 v0.2.6
[INFO] [stderr]   Downloaded serde v1.0.134
[INFO] [stderr]   Downloaded bitcoinconsensus v0.19.0-3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a3f82b5f097656b4f2b6a95c6ac9d746b450dfd4b77df589585105f2a09604a
[INFO] running `Command { std: "docker" "start" "-a" "4a3f82b5f097656b4f2b6a95c6ac9d746b450dfd4b77df589585105f2a09604a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a3f82b5f097656b4f2b6a95c6ac9d746b450dfd4b77df589585105f2a09604a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a3f82b5f097656b4f2b6a95c6ac9d746b450dfd4b77df589585105f2a09604a", kill_on_drop: false }`
[INFO] [stdout] 4a3f82b5f097656b4f2b6a95c6ac9d746b450dfd4b77df589585105f2a09604a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b86f906eb7ab03bcf747da51be68d5cef8a955d8bec61dd1a3317ed4b58406bd
[INFO] running `Command { std: "docker" "start" "-a" "b86f906eb7ab03bcf747da51be68d5cef8a955d8bec61dd1a3317ed4b58406bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling libc v0.2.113
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]    Compiling serde v1.0.134
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling serde_test v1.0.134
[INFO] [stderr]     Checking bitcoin_hashes v0.10.0
[INFO] [stderr]     Checking bech32 v0.8.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[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 secp256k1-sys v0.4.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking groestl v0.9.0
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking blake-hash v0.4.1
[INFO] [stderr]     Checking scrypt v0.2.0
[INFO] [stderr]     Checking threefish-cipher v0.4.0
[INFO] [stderr]     Checking skein-hash v0.3.1
[INFO] [stderr]     Checking secp256k1 v0.20.3
[INFO] [stderr]     Checking lyra2 v0.2.6
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking monacoin v0.27.1-pre (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `work`
[INFO] [stdout]    --> src/blockdata/block.rs:381:13
[INFO] [stdout]     |
[INFO] [stdout] 381 |         let work = Uint256([0x100010001u64, 0, 0, 0]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_work`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `work`
[INFO] [stdout]    --> src/blockdata/block.rs:419:13
[INFO] [stdout]     |
[INFO] [stdout] 419 |         let work = Uint256([0x257c3becdacc64u64, 0, 0, 0]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_work`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.30s
[INFO] running `Command { std: "docker" "inspect" "b86f906eb7ab03bcf747da51be68d5cef8a955d8bec61dd1a3317ed4b58406bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b86f906eb7ab03bcf747da51be68d5cef8a955d8bec61dd1a3317ed4b58406bd", kill_on_drop: false }`
[INFO] [stdout] b86f906eb7ab03bcf747da51be68d5cef8a955d8bec61dd1a3317ed4b58406bd
[INFO] checking monacoin-0.27.1-pre against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg-2
[INFO] extracting crate monacoin 0.27.1-pre into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate monacoin 0.27.1-pre on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate monacoin 0.27.1-pre
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate monacoin 0.27.1-pre
[INFO] tweaked toml for crates.io crate monacoin 0.27.1-pre written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate monacoin 0.27.1-pre 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" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6bc7f046d98696e939173631c0522838ce9184e70c16e0d9da3ed5a3c87f23fe
[INFO] running `Command { std: "docker" "start" "-a" "6bc7f046d98696e939173631c0522838ce9184e70c16e0d9da3ed5a3c87f23fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bc7f046d98696e939173631c0522838ce9184e70c16e0d9da3ed5a3c87f23fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bc7f046d98696e939173631c0522838ce9184e70c16e0d9da3ed5a3c87f23fe", kill_on_drop: false }`
[INFO] [stdout] 6bc7f046d98696e939173631c0522838ce9184e70c16e0d9da3ed5a3c87f23fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dunexpected_cfgs" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zcheck-cfg", kill_on_drop: false }`
[INFO] [stdout] 2a455e6ec0a392cb88f97097c8241c76a09a31973b22ac8aa7b662125042bb98
[INFO] running `Command { std: "docker" "start" "-a" "2a455e6ec0a392cb88f97097c8241c76a09a31973b22ac8aa7b662125042bb98", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.113
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling serde v1.0.134
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling serde_test v1.0.134
[INFO] [stderr]     Checking bitcoin_hashes v0.10.0
[INFO] [stderr]     Checking bech32 v0.8.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling secp256k1-sys v0.4.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking blake-hash v0.4.1
[INFO] [stderr]     Checking groestl v0.9.0
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking scrypt v0.2.0
[INFO] [stderr]     Checking threefish-cipher v0.4.0
[INFO] [stderr]     Checking secp256k1 v0.20.3
[INFO] [stderr]     Checking skein-hash v0.3.1
[INFO] [stderr]     Checking lyra2 v0.2.6
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking monacoin v0.27.1-pre (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected `cfg` condition name: `rustfmt`
[INFO] [stdout]    --> src/util/psbt/macros.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 103 | #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(rustfmt)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]     = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `rustfmt`
[INFO] [stdout]    --> src/util/psbt/macros.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 | #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(rustfmt)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `rustfmt`
[INFO] [stdout]    --> src/util/psbt/macros.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 103 | #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(rustfmt)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout]     = note: requested on the command line with `-D unexpected-cfgs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected `cfg` condition name: `rustfmt`
[INFO] [stdout]    --> src/util/psbt/macros.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 | #[cfg_attr(rustfmt, rustfmt_skip)]
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(rustfmt)");` to the top of a `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `monacoin` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `work`
[INFO] [stdout]    --> src/blockdata/block.rs:381:13
[INFO] [stdout]     |
[INFO] [stdout] 381 |         let work = Uint256([0x100010001u64, 0, 0, 0]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_work`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `work`
[INFO] [stdout]    --> src/blockdata/block.rs:419:13
[INFO] [stdout]     |
[INFO] [stdout] 419 |         let work = Uint256([0x257c3becdacc64u64, 0, 0, 0]);
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_work`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `monacoin` (lib test) due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "2a455e6ec0a392cb88f97097c8241c76a09a31973b22ac8aa7b662125042bb98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a455e6ec0a392cb88f97097c8241c76a09a31973b22ac8aa7b662125042bb98", kill_on_drop: false }`
[INFO] [stdout] 2a455e6ec0a392cb88f97097c8241c76a09a31973b22ac8aa7b662125042bb98
