[INFO] updating cached repository uma0317/Rust-BlockChain
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/uma0317/Rust-BlockChain
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/uma0317/Rust-BlockChain" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/uma0317/Rust-BlockChain"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/uma0317/Rust-BlockChain'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/uma0317/Rust-BlockChain" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/uma0317/Rust-BlockChain"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/uma0317/Rust-BlockChain'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d9219a60ce1795e0ffb22b7bd7429b56a2dbf6ba
[INFO] sha for GitHub repo uma0317/Rust-BlockChain: d9219a60ce1795e0ffb22b7bd7429b56a2dbf6ba
[INFO] validating manifest of uma0317/Rust-BlockChain on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of uma0317/Rust-BlockChain on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing uma0317/Rust-BlockChain
[INFO] finished frobbing uma0317/Rust-BlockChain
[INFO] frobbed toml for uma0317/Rust-BlockChain written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/uma0317/Rust-BlockChain/Cargo.toml
[INFO] started frobbing uma0317/Rust-BlockChain
[INFO] finished frobbing uma0317/Rust-BlockChain
[INFO] frobbed toml for uma0317/Rust-BlockChain written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/uma0317/Rust-BlockChain/Cargo.toml
[INFO] crate uma0317/Rust-BlockChain has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing uma0317/Rust-BlockChain against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/uma0317/Rust-BlockChain:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] dae5e6c8693bfbf2556eb43fbe3a7d1b5fe43adf2938210282b65204a3a1d545
[INFO] running `"docker" "start" "-a" "dae5e6c8693bfbf2556eb43fbe3a7d1b5fe43adf2938210282b65204a3a1d545"`
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling chrono v0.4.2
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Block`
[INFO] [stderr]  --> src/main.rs:3:30
[INFO] [stderr]   |
[INFO] [stderr] 3 | use blockchain::{Blockchain, Block, Transaction};
[INFO] [stderr]   |                              ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_chain_valid`
[INFO] [stderr]    --> src/blockchain.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 164 |     fn is_chain_valid(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.63s
[INFO] running `"docker" "inspect" "dae5e6c8693bfbf2556eb43fbe3a7d1b5fe43adf2938210282b65204a3a1d545"`
[INFO] running `"docker" "rm" "-f" "dae5e6c8693bfbf2556eb43fbe3a7d1b5fe43adf2938210282b65204a3a1d545"`
[INFO] [stdout] dae5e6c8693bfbf2556eb43fbe3a7d1b5fe43adf2938210282b65204a3a1d545
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/uma0317/Rust-BlockChain:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] d430ce57d94040ebc4bcea4fe6f03e66eee7faf4405024b36fa220edcd6a7dbd
[INFO] running `"docker" "start" "-a" "d430ce57d94040ebc4bcea4fe6f03e66eee7faf4405024b36fa220edcd6a7dbd"`
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Block`
[INFO] [stderr]  --> src/main.rs:3:30
[INFO] [stderr]   |
[INFO] [stderr] 3 | use blockchain::{Blockchain, Block, Transaction};
[INFO] [stderr]   |                              ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_chain_valid`
[INFO] [stderr]    --> src/blockchain.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 164 |     fn is_chain_valid(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "d430ce57d94040ebc4bcea4fe6f03e66eee7faf4405024b36fa220edcd6a7dbd"`
[INFO] running `"docker" "rm" "-f" "d430ce57d94040ebc4bcea4fe6f03e66eee7faf4405024b36fa220edcd6a7dbd"`
[INFO] [stdout] d430ce57d94040ebc4bcea4fe6f03e66eee7faf4405024b36fa220edcd6a7dbd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/uma0317/Rust-BlockChain:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 02f2546b6543b19f96d779f04b27003811eb6b6b453d518dfcda2d1a182cf511
[INFO] running `"docker" "start" "-a" "02f2546b6543b19f96d779f04b27003811eb6b6b453d518dfcda2d1a182cf511"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/blockchain-6b90ab94693e7535
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "02f2546b6543b19f96d779f04b27003811eb6b6b453d518dfcda2d1a182cf511"`
[INFO] running `"docker" "rm" "-f" "02f2546b6543b19f96d779f04b27003811eb6b6b453d518dfcda2d1a182cf511"`
[INFO] [stdout] 02f2546b6543b19f96d779f04b27003811eb6b6b453d518dfcda2d1a182cf511