[INFO] cloning repository https://github.com/michaelsdunn1/bitcoin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/michaelsdunn1/bitcoin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelsdunn1%2Fbitcoin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelsdunn1%2Fbitcoin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73c262ebdd755038e08fa132c518922ccbd5c246
[INFO] checking michaelsdunn1/bitcoin against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelsdunn1%2Fbitcoin" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/michaelsdunn1/bitcoin on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/michaelsdunn1/bitcoin
[INFO] finished tweaking git repo https://github.com/michaelsdunn1/bitcoin
[INFO] tweaked toml for git repo https://github.com/michaelsdunn1/bitcoin written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/michaelsdunn1/bitcoin already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 744ef7479a849d1c84f4e37d80da8fa0fee6cd6d2151618dfa998b20845ac26c
[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" "744ef7479a849d1c84f4e37d80da8fa0fee6cd6d2151618dfa998b20845ac26c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "744ef7479a849d1c84f4e37d80da8fa0fee6cd6d2151618dfa998b20845ac26c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "744ef7479a849d1c84f4e37d80da8fa0fee6cd6d2151618dfa998b20845ac26c", kill_on_drop: false }`
[INFO] [stdout] 744ef7479a849d1c84f4e37d80da8fa0fee6cd6d2151618dfa998b20845ac26c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d3269b628b82f309e962c52b3fd7768a12245f3b2b952d2d3e32d4ef452c649
[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" "4d3269b628b82f309e962c52b3fd7768a12245f3b2b952d2d3e32d4ef452c649", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling cc v1.0.22
[INFO] [stderr]    Compiling serde v1.0.76
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking base16 v0.1.1
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling secp256k1 v0.11.1
[INFO] [stderr]     Checking generic-array v0.7.3
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking digest-buffer v0.3.1
[INFO] [stderr]     Checking digest v0.5.2
[INFO] [stderr]     Checking digest v0.7.5
[INFO] [stderr]     Checking sha2 v0.5.3
[INFO] [stderr]     Checking ripemd160 v0.7.0
[INFO] [stderr]     Checking bitcoin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Secp256k1`
[INFO] [stdout]   --> src/keys.rs:15:23
[INFO] [stdout]    |
[INFO] [stdout] 15 | use self::secp256k1::{Secp256k1, SecretKey, PublicKey};
[INFO] [stdout]    |                       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/keys.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     &buf.clone_from_slice(hasher.result().as_slice());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/keys.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     &buf.clone_from_slice(hasher.result().as_slice());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/keys.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     &buf.clone_from_slice(hasher.result().as_slice());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/keys.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     &buf.clone_from_slice(hasher.result().as_slice());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.65s
[INFO] running `Command { std: "docker" "inspect" "4d3269b628b82f309e962c52b3fd7768a12245f3b2b952d2d3e32d4ef452c649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d3269b628b82f309e962c52b3fd7768a12245f3b2b952d2d3e32d4ef452c649", kill_on_drop: false }`
[INFO] [stdout] 4d3269b628b82f309e962c52b3fd7768a12245f3b2b952d2d3e32d4ef452c649