[INFO] updating cached repository https://github.com/Kevingislason/rust_bitcoin_hardware_wallet_demos
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b5fc4f28c04985495d7eb646fa440313bac6200d
[INFO] checking Kevingislason/rust_bitcoin_hardware_wallet_demos against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKevingislason%2Frust_bitcoin_hardware_wallet_demos" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kevingislason/rust_bitcoin_hardware_wallet_demos on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Kevingislason/rust_bitcoin_hardware_wallet_demos
[INFO] finished tweaking git repo https://github.com/Kevingislason/rust_bitcoin_hardware_wallet_demos
[INFO] tweaked toml for git repo https://github.com/Kevingislason/rust_bitcoin_hardware_wallet_demos written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Kevingislason/rust_bitcoin_hardware_wallet_demos already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "/opt/rustwide/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e48e12c9d8a7fbf75bfd46a95917032b2f032b6deeff7f070f871c1f9ecd7eb3
[INFO] running `"docker" "start" "-a" "e48e12c9d8a7fbf75bfd46a95917032b2f032b6deeff7f070f871c1f9ecd7eb3"`
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]     Checking bech32 v0.7.1
[INFO] [stderr]     Checking impl_ops v0.1.1
[INFO] [stderr]    Compiling secp256k1 v0.12.2
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]     Checking genio v0.2.1
[INFO] [stderr]     Checking ripemd160 v0.8.0
[INFO] [stderr]     Checking bigint v4.4.1
[INFO] [stderr]     Checking bitcoin_hashes v0.7.1
[INFO] [stderr]     Checking bitcoin v0.19.2
[INFO] [stderr]     Checking rust_bitcoin_hardware_wallet_demos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `num::pow::pow`
[INFO] [stderr]  --> src/ecc.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use num::pow::pow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `One`
[INFO] [stderr]  --> src/helpers.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | use num_traits::identities::{One, Zero};
[INFO] [stderr]   |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigEndian`, `LittleEndian`, `ReadBytesExt`, `WriteBytesExt`
[INFO] [stderr]   --> src/tx.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 11 | use byteorder::{BigEndian, LittleEndian, ReadBytesExt, WriteBytesExt};
[INFO] [stderr]    |                 ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::convert::TryFrom`
[INFO] [stderr]   --> src/tx.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use core::convert::TryFrom;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hex::decode`
[INFO] [stderr]   --> src/tx.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use hex::decode;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num::Zero`
[INFO] [stderr]   --> src/tx.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use num::Zero;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `One`
[INFO] [stderr]  --> src/helpers.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | use num_traits::identities::{One, Zero};
[INFO] [stderr]   |                              ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BigEndian`, `LittleEndian`, `ReadBytesExt`, `WriteBytesExt`
[INFO] [stderr]   --> src/tx.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 11 | use byteorder::{BigEndian, LittleEndian, ReadBytesExt, WriteBytesExt};
[INFO] [stderr]    |                 ^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::convert::TryFrom`
[INFO] [stderr]   --> src/tx.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use core::convert::TryFrom;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hex::decode`
[INFO] [stderr]   --> src/tx.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use hex::decode;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num::Zero`
[INFO] [stderr]   --> src/tx.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use num::Zero;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Digest`
[INFO] [stderr]   --> src/ecc.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 | use sha2::{Digest, Sha256};
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `prefix` is never read
[INFO] [stderr]    --> src/ecc.rs:242:13
[INFO] [stderr]     |
[INFO] [stderr] 242 |     let mut prefix = vec![];
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `prefix` is never read
[INFO] [stderr]    --> src/ecc.rs:242:13
[INFO] [stderr]     |
[INFO] [stderr] 242 |     let mut prefix = vec![];
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.06s
[INFO] running `"docker" "inspect" "e48e12c9d8a7fbf75bfd46a95917032b2f032b6deeff7f070f871c1f9ecd7eb3"`
[INFO] running `"docker" "rm" "-f" "e48e12c9d8a7fbf75bfd46a95917032b2f032b6deeff7f070f871c1f9ecd7eb3"`
[INFO] [stdout] e48e12c9d8a7fbf75bfd46a95917032b2f032b6deeff7f070f871c1f9ecd7eb3