[INFO] updating cached repository blaesus/btc-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/blaesus/btc-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/blaesus/btc-rs" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/blaesus/btc-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/blaesus/btc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/blaesus/btc-rs" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/blaesus/btc-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/blaesus/btc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c925bccbaa2789422403762a2411a83aee58dacf
[INFO] sha for GitHub repo blaesus/btc-rs: c925bccbaa2789422403762a2411a83aee58dacf
[INFO] validating manifest of blaesus/btc-rs on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of blaesus/btc-rs on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing blaesus/btc-rs
[INFO] finished frobbing blaesus/btc-rs
[INFO] frobbed toml for blaesus/btc-rs written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/blaesus/btc-rs/Cargo.toml
[INFO] started frobbing blaesus/btc-rs
[INFO] finished frobbing blaesus/btc-rs
[INFO] frobbed toml for blaesus/btc-rs written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/blaesus/btc-rs/Cargo.toml
[INFO] crate blaesus/btc-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking blaesus/btc-rs against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-7/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/blaesus/btc-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2378d3efc4475c57d687e329a3edc73a8badadebc64c15d4463f78f6b06ecaf3
[INFO] running `"docker" "start" "-a" "2378d3efc4475c57d687e329a3edc73a8badadebc64c15d4463f78f6b06ecaf3"`
[INFO] [stderr]    Compiling secp256k1 v0.12.2
[INFO] [stderr]     Checking bitcoin v0.18.0
[INFO] [stderr]     Checking btc-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Sha512`
[INFO] [stderr]  --> src/utils.rs:1:28
[INFO] [stderr]   |
[INFO] [stderr] 1 | use sha2::{Digest, Sha256, Sha512};
[INFO] [stderr]   |                            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sha512`
[INFO] [stderr]  --> src/utils.rs:1:28
[INFO] [stderr]   |
[INFO] [stderr] 1 | use sha2::{Digest, Sha256, Sha512};
[INFO] [stderr]   |                            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `error`
[INFO] [stderr]   --> src/main.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |             Err(error) => return,
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `version`
[INFO] [stderr]   --> src/main.rs:77:41
[INFO] [stderr]    |
[INFO] [stderr] 77 |                 NetworkMessage::Version(version) => {
[INFO] [stderr]    |                                         ^^^^^^^ help: consider prefixing with an underscore: `_version`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `error`
[INFO] [stderr]   --> src/main.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |             Err(error) => return,
[INFO] [stderr]    |                 ^^^^^ help: consider prefixing with an underscore: `_error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `version`
[INFO] [stderr]   --> src/main.rs:77:41
[INFO] [stderr]    |
[INFO] [stderr] 77 |                 NetworkMessage::Version(version) => {
[INFO] [stderr]    |                                         ^^^^^^^ help: consider prefixing with an underscore: `_version`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pretty_dump`
[INFO] [stderr]   --> src/utils.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn pretty_dump(buffer: &[u8]) -> () {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |         connection.join();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pretty_dump`
[INFO] [stderr]   --> src/utils.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn pretty_dump(buffer: &[u8]) -> () {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |         connection.join();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.83s
[INFO] running `"docker" "inspect" "2378d3efc4475c57d687e329a3edc73a8badadebc64c15d4463f78f6b06ecaf3"`
[INFO] running `"docker" "rm" "-f" "2378d3efc4475c57d687e329a3edc73a8badadebc64c15d4463f78f6b06ecaf3"`
[INFO] [stdout] 2378d3efc4475c57d687e329a3edc73a8badadebc64c15d4463f78f6b06ecaf3