[INFO] updating cached repository werner/firstcoin
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/werner/firstcoin
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/werner/firstcoin" "work/ex/beta-1.38-1/sources/1.37.0/gh/werner/firstcoin"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/werner/firstcoin'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/werner/firstcoin" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/werner/firstcoin"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/werner/firstcoin'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 09697aa78c8e98bb14188f07b4ff163c31c4b1a9
[INFO] sha for GitHub repo werner/firstcoin: 09697aa78c8e98bb14188f07b4ff163c31c4b1a9
[INFO] validating manifest of werner/firstcoin on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of werner/firstcoin on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing werner/firstcoin
[INFO] finished frobbing werner/firstcoin
[INFO] frobbed toml for werner/firstcoin written to work/ex/beta-1.38-1/sources/1.37.0/gh/werner/firstcoin/Cargo.toml
[INFO] started frobbing werner/firstcoin
[INFO] finished frobbing werner/firstcoin
[INFO] frobbed toml for werner/firstcoin written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/werner/firstcoin/Cargo.toml
[INFO] crate werner/firstcoin already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing werner/firstcoin against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/werner/firstcoin:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0d1038e66a7bc2fb319b0a60748b71aa1408f0fd5f3e4706ce9c9d8655b1d2b9
[INFO] running `"docker" "start" "-a" "0d1038e66a7bc2fb319b0a60748b71aa1408f0fd5f3e4706ce9c9d8655b1d2b9"`
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling parity-wordlist v1.2.0
[INFO] [stderr]    Compiling ring v0.12.1
[INFO] [stderr]    Compiling firstcoin v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `digest`, `signature`
[INFO] [stderr]  --> src/wallet.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ring::{digest, signature, rand, agreement};
[INFO] [stderr]   |            ^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_hash`
[INFO] [stderr]  --> src/string_utils.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn generate_hash() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Wallet`
[INFO] [stderr]  --> src/wallet.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Wallet {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/wallet.rs:10:3
[INFO] [stderr]    |
[INFO] [stderr] 10 |   pub fn new() -> Wallet {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `generate_keys`
[INFO] [stderr]   --> src/wallet.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |   pub fn generate_keys(&mut self) -> &Wallet {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `PublicKey`
[INFO] [stderr]  --> src/transaction.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | type PublicKey = String;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TransactionInput`
[INFO] [stderr]  --> src/transaction.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct TransactionInput {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TransactionOutput`
[INFO] [stderr]  --> src/transaction.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct TransactionOutput {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Transaction`
[INFO] [stderr]  --> src/transaction.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Transaction {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/transaction.rs:19:3
[INFO] [stderr]    |
[INFO] [stderr] 19 |   pub fn new(from: PublicKey, to: PublicKey, value: f64, inputs: Vec<TransactionInput>, sequence: i32) -> Transaction {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.93s
[INFO] running `"docker" "inspect" "0d1038e66a7bc2fb319b0a60748b71aa1408f0fd5f3e4706ce9c9d8655b1d2b9"`
[INFO] running `"docker" "rm" "-f" "0d1038e66a7bc2fb319b0a60748b71aa1408f0fd5f3e4706ce9c9d8655b1d2b9"`
[INFO] [stdout] 0d1038e66a7bc2fb319b0a60748b71aa1408f0fd5f3e4706ce9c9d8655b1d2b9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/werner/firstcoin:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a905580a6502406b5e87a09b9a988a34eede2b43b2c74d84391590f34a2b2080
[INFO] running `"docker" "start" "-a" "a905580a6502406b5e87a09b9a988a34eede2b43b2c74d84391590f34a2b2080"`
[INFO] [stderr]    Compiling firstcoin v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `digest`, `signature`
[INFO] [stderr]  --> src/wallet.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ring::{digest, signature, rand, agreement};
[INFO] [stderr]   |            ^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_hash`
[INFO] [stderr]  --> src/string_utils.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn generate_hash() -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Wallet`
[INFO] [stderr]  --> src/wallet.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Wallet {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/wallet.rs:10:3
[INFO] [stderr]    |
[INFO] [stderr] 10 |   pub fn new() -> Wallet {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `generate_keys`
[INFO] [stderr]   --> src/wallet.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |   pub fn generate_keys(&mut self) -> &Wallet {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `PublicKey`
[INFO] [stderr]  --> src/transaction.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | type PublicKey = String;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TransactionInput`
[INFO] [stderr]  --> src/transaction.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct TransactionInput {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TransactionOutput`
[INFO] [stderr]  --> src/transaction.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct TransactionOutput {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Transaction`
[INFO] [stderr]  --> src/transaction.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Transaction {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/transaction.rs:19:3
[INFO] [stderr]    |
[INFO] [stderr] 19 |   pub fn new(from: PublicKey, to: PublicKey, value: f64, inputs: Vec<TransactionInput>, sequence: i32) -> Transaction {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `"docker" "inspect" "a905580a6502406b5e87a09b9a988a34eede2b43b2c74d84391590f34a2b2080"`
[INFO] running `"docker" "rm" "-f" "a905580a6502406b5e87a09b9a988a34eede2b43b2c74d84391590f34a2b2080"`
[INFO] [stdout] a905580a6502406b5e87a09b9a988a34eede2b43b2c74d84391590f34a2b2080
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/werner/firstcoin:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 9f1660ab153ba58735d0d8f1752b3c47d93cc0d4e4bc3cddb436a145c9a8e4f6
[INFO] running `"docker" "start" "-a" "9f1660ab153ba58735d0d8f1752b3c47d93cc0d4e4bc3cddb436a145c9a8e4f6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/firstcoin-de31be2bc3fb64ba
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test block::block_basics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9f1660ab153ba58735d0d8f1752b3c47d93cc0d4e4bc3cddb436a145c9a8e4f6"`
[INFO] running `"docker" "rm" "-f" "9f1660ab153ba58735d0d8f1752b3c47d93cc0d4e4bc3cddb436a145c9a8e4f6"`
[INFO] [stdout] 9f1660ab153ba58735d0d8f1752b3c47d93cc0d4e4bc3cddb436a145c9a8e4f6