[INFO] cloning repository https://github.com/Kevingislason/rust_bitcoin_hardware_wallet_demos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kevingislason/rust_bitcoin_hardware_wallet_demos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKevingislason%2Frust_bitcoin_hardware_wallet_demos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKevingislason%2Frust_bitcoin_hardware_wallet_demos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3f36a6b856cce40e99f81289c96a8bca040a3cb
[INFO] testing Kevingislason/rust_bitcoin_hardware_wallet_demos against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKevingislason%2Frust_bitcoin_hardware_wallet_demos" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kevingislason/rust_bitcoin_hardware_wallet_demos on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bigint v4.4.3
[INFO] [stderr]   Downloaded bitcoin v0.19.2
[INFO] [stderr]   Downloaded genio v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83e9eb2e1a3d665a10568e2a9ce733fb95c2c3d4371a35334447594b56ff003d
[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" "83e9eb2e1a3d665a10568e2a9ce733fb95c2c3d4371a35334447594b56ff003d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83e9eb2e1a3d665a10568e2a9ce733fb95c2c3d4371a35334447594b56ff003d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83e9eb2e1a3d665a10568e2a9ce733fb95c2c3d4371a35334447594b56ff003d", kill_on_drop: false }`
[INFO] [stdout] 83e9eb2e1a3d665a10568e2a9ce733fb95c2c3d4371a35334447594b56ff003d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bb7c76068e22b3c0016b05df9152d63ad062498c85717c2272b1864b2f9302d
[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" "0bb7c76068e22b3c0016b05df9152d63ad062498c85717c2272b1864b2f9302d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling bech32 v0.7.2
[INFO] [stderr]    Compiling bitcoin_hashes v0.7.6
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling auto_ops v0.1.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling genio v0.2.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling pbkdf2 v0.3.0
[INFO] [stderr]    Compiling ripemd160 v0.8.0
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling bigint v4.4.3
[INFO] [stderr]    Compiling secp256k1 v0.12.2
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling bitcoin v0.19.2
[INFO] [stderr]    Compiling rust_bitcoin_hardware_wallet_demos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_int_pow)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `U256_from_hex_str`
[INFO] [stdout]  --> src/ecc.rs:9:56
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::helpers::{encode_base58_checksum, hash_160, U256_from_hex_str};
[INFO] [stdout]   |                                                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::pow::pow`
[INFO] [stdout]   --> src/ecc.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use num::pow::pow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash_160`
[INFO] [stdout]  --> src/hd_wallet.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::helpers::{hash_160, hmac_512};
[INFO] [stdout]   |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryInto`
[INFO] [stdout]  --> src/helpers.rs:5:27
[INFO] [stdout]   |
[INFO] [stdout] 5 | use core::convert::{From, TryInto};
[INFO] [stdout]   |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hd_wallet::HDSeed`
[INFO] [stdout]  --> src/seed_phrase.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::hd_wallet::HDSeed;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]   --> src/ecc.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | use sha2::{Digest, Sha256};
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_bitcoin_hardware_wallet_demos`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "0bb7c76068e22b3c0016b05df9152d63ad062498c85717c2272b1864b2f9302d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bb7c76068e22b3c0016b05df9152d63ad062498c85717c2272b1864b2f9302d", kill_on_drop: false }`
[INFO] [stdout] 0bb7c76068e22b3c0016b05df9152d63ad062498c85717c2272b1864b2f9302d