[INFO] cloning repository https://github.com/757566833/chain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/757566833/chain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F757566833%2Fchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F757566833%2Fchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c075b634f3ebb89ba1426009208c48bcf9ffd70
[INFO] checking 757566833/chain against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F757566833%2Fchain" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/757566833/chain on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/757566833/chain
[INFO] finished tweaking git repo https://github.com/757566833/chain
[INFO] tweaked toml for git repo https://github.com/757566833/chain written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/757566833/chain 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe2cfd3d7f0e8cf9b95ce3ff664b10cd3e7b49e37d9d09076b257695a3733184
[INFO] running `Command { std: "docker" "start" "-a" "fe2cfd3d7f0e8cf9b95ce3ff664b10cd3e7b49e37d9d09076b257695a3733184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe2cfd3d7f0e8cf9b95ce3ff664b10cd3e7b49e37d9d09076b257695a3733184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe2cfd3d7f0e8cf9b95ce3ff664b10cd3e7b49e37d9d09076b257695a3733184", kill_on_drop: false }`
[INFO] [stdout] fe2cfd3d7f0e8cf9b95ce3ff664b10cd3e7b49e37d9d09076b257695a3733184
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e7bc27a27dec7c7bf57487fe4ad7f370db247290f2a9087e937465c63910335
[INFO] running `Command { std: "docker" "start" "-a" "0e7bc27a27dec7c7bf57487fe4ad7f370db247290f2a9087e937465c63910335", kill_on_drop: false }`
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking const-oid v0.9.5
[INFO] [stderr]     Checking base16ct v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]     Checking cpufeatures v0.2.10
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking der v0.7.8
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking keccak v0.1.4
[INFO] [stderr]     Checking bitcoin_hashes v0.11.0
[INFO] [stderr]     Checking hex-literal v0.4.1
[INFO] [stderr]     Checking rlp v0.5.2
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking rfc6979 v0.4.0
[INFO] [stderr]     Checking spki v0.7.2
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking sec1 v0.7.3
[INFO] [stderr]     Checking pkcs8 v0.10.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking crypto-bigint v0.5.3
[INFO] [stderr]     Checking signature v2.1.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-bigint v0.4.4
[INFO] [stderr]     Checking elliptic-curve v0.13.6
[INFO] [stderr]     Checking bip39 v2.0.0
[INFO] [stderr]     Checking ecdsa v0.16.8
[INFO] [stderr]     Checking k256 v0.13.1
[INFO] [stderr]     Checking chain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `RecoveryId`, `Secp256k1`, `pkcs8::DecodePublicKey`
[INFO] [stdout]    --> src/sign.rs:289:24
[INFO] [stdout]     |
[INFO] [stdout] 289 |     use k256::{ecdsa::{RecoveryId, Signature, VerifyingKey}, pkcs8::DecodePublicKey, Secp256k1, EncodedPoint};
[INFO] [stdout]     |                        ^^^^^^^^^^                            ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `S`
[INFO] [stdout]    --> src/sign.rs:297:37
[INFO] [stdout]     |
[INFO] [stdout] 297 |             SignTransactionRequest, S,
[INFO] [stdout]     |                                     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `element_from_padded_slice`
[INFO] [stdout]    --> src/sign.rs:301:84
[INFO] [stdout]     |
[INFO] [stdout] 301 |     use super::{big_num_to_vec, sign_message, verify_digest_recoverable_signature, element_from_padded_slice};
[INFO] [stdout]     |                                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `entryop` and `seed` are never read
[INFO] [stdout]   --> src/mnemonic.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct HDNode {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 10 |     entryop: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 11 |     seed: [u8; 64],
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `HDNode` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.78s
[INFO] running `Command { std: "docker" "inspect" "0e7bc27a27dec7c7bf57487fe4ad7f370db247290f2a9087e937465c63910335", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e7bc27a27dec7c7bf57487fe4ad7f370db247290f2a9087e937465c63910335", kill_on_drop: false }`
[INFO] [stdout] 0e7bc27a27dec7c7bf57487fe4ad7f370db247290f2a9087e937465c63910335