Dec 02 00:38:19.278 INFO testing andybug/rustychain against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 00:38:19.278 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 00:38:19.603 INFO [stdout] d497ef7d013ac599bc3bc010d30c0cc7237cbaf5276be3f2fa78dd03270b6c0b
Dec 02 00:38:19.611 INFO running `"docker" "start" "-a" "d497ef7d013ac599bc3bc010d30c0cc7237cbaf5276be3f2fa78dd03270b6c0b"`
Dec 02 00:38:20.057 INFO [stderr] usermod: no changes
Dec 02 00:38:20.130 INFO [stderr]    Compiling serde_yaml v0.7.1
Dec 02 00:38:20.130 INFO [stderr]    Compiling generic-array v0.8.3
Dec 02 00:38:20.843 INFO [stderr]    Compiling crypto-mac v0.4.0
Dec 02 00:38:20.843 INFO [stderr]    Compiling digest v0.6.2
Dec 02 00:38:21.222 INFO [stderr]    Compiling blake2 v0.6.1
Dec 02 00:38:23.147 INFO [stderr]    Compiling rustychain v0.1.0 (/source)
Dec 02 00:38:23.967 INFO [stderr] warning: unused import: `SeqAccess`
Dec 02 00:38:23.967 INFO [stderr]  --> src/blockchain/block.rs:9:70
Dec 02 00:38:23.967 INFO [stderr]   |
Dec 02 00:38:23.967 INFO [stderr] 9 | use self::serde::de::{Visitor, Deserialize, Deserializer, MapAccess, SeqAccess};
Dec 02 00:38:23.967 INFO [stderr]   |                                                                      ^^^^^^^^^
Dec 02 00:38:23.967 INFO [stderr]   |
Dec 02 00:38:23.967 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 02 00:38:23.967 INFO [stderr] 
Dec 02 00:38:23.967 INFO [stderr] warning: unused import: `std::fs`
Dec 02 00:38:23.967 INFO [stderr]  --> src/blockchain/chain.rs:5:5
Dec 02 00:38:23.967 INFO [stderr]   |
Dec 02 00:38:23.967 INFO [stderr] 5 | use std::fs;
Dec 02 00:38:23.967 INFO [stderr]   |     ^^^^^^^
Dec 02 00:38:23.967 INFO [stderr] 
Dec 02 00:38:23.967 INFO [stderr] warning: unused import: `Hash256`
Dec 02 00:38:23.967 INFO [stderr]   --> src/blockchain/chain.rs:14:18
Dec 02 00:38:23.967 INFO [stderr]    |
Dec 02 00:38:23.967 INFO [stderr] 14 | use util::hash::{Hash256, HASH256_BYTES};
Dec 02 00:38:23.967 INFO [stderr]    |                  ^^^^^^^
Dec 02 00:38:23.967 INFO [stderr] 
Dec 02 00:38:23.967 INFO [stderr] warning: unused import: `FromHex`
Dec 02 00:38:23.967 INFO [stderr]  --> src/blockchain/transaction.rs:9:17
Dec 02 00:38:23.967 INFO [stderr]   |
Dec 02 00:38:23.967 INFO [stderr] 9 | use util::hex::{FromHex, ToHex};
Dec 02 00:38:23.967 INFO [stderr]   |                 ^^^^^^^
Dec 02 00:38:23.967 INFO [stderr] 
Dec 02 00:38:24.143 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 02 00:38:24.143 INFO [stderr]  --> src/blockchain/chain.rs:9:5
Dec 02 00:38:24.143 INFO [stderr]   |
Dec 02 00:38:24.143 INFO [stderr] 9 | use std::io::prelude::*;
Dec 02 00:38:24.143 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 02 00:38:24.143 INFO [stderr] 
Dec 02 00:38:24.215 INFO [stderr] warning: method is never used: `reset`
Dec 02 00:38:24.215 INFO [stderr]   --> src/util/hash.rs:25:5
Dec 02 00:38:24.215 INFO [stderr]    |
Dec 02 00:38:24.215 INFO [stderr] 25 |     pub fn reset(&mut self) {
Dec 02 00:38:24.215 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.215 INFO [stderr]    |
Dec 02 00:38:24.215 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 02 00:38:24.215 INFO [stderr] 
Dec 02 00:38:24.215 INFO [stderr] warning: function is never used: `now`
Dec 02 00:38:24.215 INFO [stderr]  --> src/util/time.rs:3:1
Dec 02 00:38:24.215 INFO [stderr]   |
Dec 02 00:38:24.215 INFO [stderr] 3 | pub fn now() -> u64 {
Dec 02 00:38:24.215 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.215 INFO [stderr] 
Dec 02 00:38:24.215 INFO [stderr] warning: method is never used: `new`
Dec 02 00:38:24.215 INFO [stderr]   --> src/blockchain/block.rs:26:5
Dec 02 00:38:24.215 INFO [stderr]    |
Dec 02 00:38:24.215 INFO [stderr] 26 |     pub fn new() -> Block {
Dec 02 00:38:24.215 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.215 INFO [stderr] 
Dec 02 00:38:24.215 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 02 00:38:24.215 INFO [stderr]   --> src/blockchain/block.rs:36:5
Dec 02 00:38:24.215 INFO [stderr]    |
Dec 02 00:38:24.215 INFO [stderr] 36 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 02 00:38:24.215 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.215 INFO [stderr] 
Dec 02 00:38:24.215 INFO [stderr] warning: method is never used: `set_previous`
Dec 02 00:38:24.215 INFO [stderr]   --> src/blockchain/block.rs:40:5
Dec 02 00:38:24.215 INFO [stderr]    |
Dec 02 00:38:24.215 INFO [stderr] 40 |     pub fn set_previous(&mut self, p: &[u8; HASH256_BYTES]) {
Dec 02 00:38:24.215 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.215 INFO [stderr] 
Dec 02 00:38:24.215 INFO [stderr] warning: method is never used: `add_transaction`
Dec 02 00:38:24.215 INFO [stderr]   --> src/blockchain/block.rs:48:5
Dec 02 00:38:24.215 INFO [stderr]    |
Dec 02 00:38:24.215 INFO [stderr] 48 |     pub fn add_transaction(&mut self, tx: Transaction) {
Dec 02 00:38:24.215 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.215 INFO [stderr] 
Dec 02 00:38:24.215 INFO [stderr] warning: method is never used: `new`
Dec 02 00:38:24.215 INFO [stderr]   --> src/blockchain/transaction.rs:58:5
Dec 02 00:38:24.215 INFO [stderr]    |
Dec 02 00:38:24.215 INFO [stderr] 58 |     pub fn new() -> Transaction {
Dec 02 00:38:24.215 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.215 INFO [stderr] 
Dec 02 00:38:24.215 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 02 00:38:24.215 INFO [stderr]   --> src/blockchain/transaction.rs:67:5
Dec 02 00:38:24.215 INFO [stderr]    |
Dec 02 00:38:24.215 INFO [stderr] 67 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 02 00:38:24.215 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.215 INFO [stderr] 
Dec 02 00:38:24.215 INFO [stderr] warning: method is never used: `add_output`
Dec 02 00:38:24.216 INFO [stderr]   --> src/blockchain/transaction.rs:71:5
Dec 02 00:38:24.216 INFO [stderr]    |
Dec 02 00:38:24.216 INFO [stderr] 71 |     pub fn add_output(&mut self, amount: u64) {
Dec 02 00:38:24.216 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.216 INFO [stderr] 
Dec 02 00:38:24.216 INFO [stderr] warning: variant `Merkle_root` should have a camel case name such as `MerkleRoot`
Dec 02 00:38:24.216 INFO [stderr]   --> src/blockchain/block.rs:88:52
Dec 02 00:38:24.216 INFO [stderr]    |
Dec 02 00:38:24.216 INFO [stderr] 88 |         enum Field { Version, Timestamp, Previous, Merkle_root };
Dec 02 00:38:24.216 INFO [stderr]    |                                                    ^^^^^^^^^^^
Dec 02 00:38:24.216 INFO [stderr]    |
Dec 02 00:38:24.216 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 02 00:38:24.216 INFO [stderr] 
Dec 02 00:38:24.227 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 00:38:24.227 INFO [stderr]   --> src/blockchain/chain.rs:83:21
Dec 02 00:38:24.227 INFO [stderr]    |
Dec 02 00:38:24.227 INFO [stderr] 83 |                     writeln!(&mut io::stderr(), "read_chain: {}", e);
Dec 02 00:38:24.227 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.227 INFO [stderr]    |
Dec 02 00:38:24.227 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 02 00:38:24.227 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 00:38:24.227 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 02 00:38:24.227 INFO [stderr] 
Dec 02 00:38:24.227 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 00:38:24.227 INFO [stderr]   --> src/blockchain/transaction.rs:19:9
Dec 02 00:38:24.227 INFO [stderr]    |
Dec 02 00:38:24.227 INFO [stderr] 19 |         hash.write_all(&self.hash);
Dec 02 00:38:24.227 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:24.227 INFO [stderr]    |
Dec 02 00:38:24.227 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 00:38:24.227 INFO [stderr] 
Dec 02 00:38:25.602 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.52s
Dec 02 00:38:25.606 INFO [stderr] su: No module specific data is present
Dec 02 00:38:25.980 INFO running `"docker" "inspect" "d497ef7d013ac599bc3bc010d30c0cc7237cbaf5276be3f2fa78dd03270b6c0b"`
Dec 02 00:38:26.253 INFO running `"docker" "rm" "-f" "d497ef7d013ac599bc3bc010d30c0cc7237cbaf5276be3f2fa78dd03270b6c0b"`
Dec 02 00:38:26.459 INFO [stdout] d497ef7d013ac599bc3bc010d30c0cc7237cbaf5276be3f2fa78dd03270b6c0b
Dec 02 00:38:26.463 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 00:38:26.877 INFO [stdout] 87b69d04e729b03b6e69755bd8c83b5e744a6c62b49318dd557dee59d140fedc
Dec 02 00:38:26.880 INFO running `"docker" "start" "-a" "87b69d04e729b03b6e69755bd8c83b5e744a6c62b49318dd557dee59d140fedc"`
Dec 02 00:38:27.275 INFO [stderr] usermod: no changes
Dec 02 00:38:27.335 INFO [stderr]    Compiling rustychain v0.1.0 (/source)
Dec 02 00:38:28.287 INFO [stderr] warning: unused import: `SeqAccess`
Dec 02 00:38:28.287 INFO [stderr]  --> src/blockchain/block.rs:9:70
Dec 02 00:38:28.287 INFO [stderr]   |
Dec 02 00:38:28.287 INFO [stderr] 9 | use self::serde::de::{Visitor, Deserialize, Deserializer, MapAccess, SeqAccess};
Dec 02 00:38:28.287 INFO [stderr]   |                                                                      ^^^^^^^^^
Dec 02 00:38:28.287 INFO [stderr]   |
Dec 02 00:38:28.287 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 02 00:38:28.287 INFO [stderr] 
Dec 02 00:38:28.287 INFO [stderr] warning: unused import: `std::fs`
Dec 02 00:38:28.287 INFO [stderr]  --> src/blockchain/chain.rs:5:5
Dec 02 00:38:28.287 INFO [stderr]   |
Dec 02 00:38:28.287 INFO [stderr] 5 | use std::fs;
Dec 02 00:38:28.287 INFO [stderr]   |     ^^^^^^^
Dec 02 00:38:28.287 INFO [stderr] 
Dec 02 00:38:28.287 INFO [stderr] warning: unused import: `Hash256`
Dec 02 00:38:28.287 INFO [stderr]   --> src/blockchain/chain.rs:14:18
Dec 02 00:38:28.287 INFO [stderr]    |
Dec 02 00:38:28.287 INFO [stderr] 14 | use util::hash::{Hash256, HASH256_BYTES};
Dec 02 00:38:28.287 INFO [stderr]    |                  ^^^^^^^
Dec 02 00:38:28.287 INFO [stderr] 
Dec 02 00:38:28.287 INFO [stderr] warning: unused import: `FromHex`
Dec 02 00:38:28.287 INFO [stderr]  --> src/blockchain/transaction.rs:9:17
Dec 02 00:38:28.287 INFO [stderr]   |
Dec 02 00:38:28.287 INFO [stderr] 9 | use util::hex::{FromHex, ToHex};
Dec 02 00:38:28.287 INFO [stderr]   |                 ^^^^^^^
Dec 02 00:38:28.287 INFO [stderr] 
Dec 02 00:38:28.486 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 02 00:38:28.486 INFO [stderr]  --> src/blockchain/chain.rs:9:5
Dec 02 00:38:28.486 INFO [stderr]   |
Dec 02 00:38:28.487 INFO [stderr] 9 | use std::io::prelude::*;
Dec 02 00:38:28.487 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 02 00:38:28.487 INFO [stderr] 
Dec 02 00:38:28.562 INFO [stderr] warning: method is never used: `reset`
Dec 02 00:38:28.562 INFO [stderr]   --> src/util/hash.rs:25:5
Dec 02 00:38:28.562 INFO [stderr]    |
Dec 02 00:38:28.562 INFO [stderr] 25 |     pub fn reset(&mut self) {
Dec 02 00:38:28.562 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.562 INFO [stderr]    |
Dec 02 00:38:28.562 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 02 00:38:28.562 INFO [stderr] 
Dec 02 00:38:28.562 INFO [stderr] warning: function is never used: `now`
Dec 02 00:38:28.562 INFO [stderr]  --> src/util/time.rs:3:1
Dec 02 00:38:28.562 INFO [stderr]   |
Dec 02 00:38:28.562 INFO [stderr] 3 | pub fn now() -> u64 {
Dec 02 00:38:28.562 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.562 INFO [stderr] 
Dec 02 00:38:28.562 INFO [stderr] warning: method is never used: `new`
Dec 02 00:38:28.563 INFO [stderr]   --> src/blockchain/block.rs:26:5
Dec 02 00:38:28.563 INFO [stderr]    |
Dec 02 00:38:28.563 INFO [stderr] 26 |     pub fn new() -> Block {
Dec 02 00:38:28.563 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.563 INFO [stderr] 
Dec 02 00:38:28.563 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 02 00:38:28.563 INFO [stderr]   --> src/blockchain/block.rs:36:5
Dec 02 00:38:28.563 INFO [stderr]    |
Dec 02 00:38:28.563 INFO [stderr] 36 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 02 00:38:28.563 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.563 INFO [stderr] 
Dec 02 00:38:28.563 INFO [stderr] warning: method is never used: `set_previous`
Dec 02 00:38:28.563 INFO [stderr]   --> src/blockchain/block.rs:40:5
Dec 02 00:38:28.563 INFO [stderr]    |
Dec 02 00:38:28.563 INFO [stderr] 40 |     pub fn set_previous(&mut self, p: &[u8; HASH256_BYTES]) {
Dec 02 00:38:28.563 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.563 INFO [stderr] 
Dec 02 00:38:28.563 INFO [stderr] warning: method is never used: `add_transaction`
Dec 02 00:38:28.563 INFO [stderr]   --> src/blockchain/block.rs:48:5
Dec 02 00:38:28.563 INFO [stderr]    |
Dec 02 00:38:28.563 INFO [stderr] 48 |     pub fn add_transaction(&mut self, tx: Transaction) {
Dec 02 00:38:28.563 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.563 INFO [stderr] 
Dec 02 00:38:28.563 INFO [stderr] warning: method is never used: `new`
Dec 02 00:38:28.563 INFO [stderr]   --> src/blockchain/transaction.rs:58:5
Dec 02 00:38:28.563 INFO [stderr]    |
Dec 02 00:38:28.563 INFO [stderr] 58 |     pub fn new() -> Transaction {
Dec 02 00:38:28.563 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.563 INFO [stderr] 
Dec 02 00:38:28.563 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 02 00:38:28.563 INFO [stderr]   --> src/blockchain/transaction.rs:67:5
Dec 02 00:38:28.563 INFO [stderr]    |
Dec 02 00:38:28.563 INFO [stderr] 67 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 02 00:38:28.563 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.563 INFO [stderr] 
Dec 02 00:38:28.563 INFO [stderr] warning: method is never used: `add_output`
Dec 02 00:38:28.563 INFO [stderr]   --> src/blockchain/transaction.rs:71:5
Dec 02 00:38:28.563 INFO [stderr]    |
Dec 02 00:38:28.563 INFO [stderr] 71 |     pub fn add_output(&mut self, amount: u64) {
Dec 02 00:38:28.563 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.563 INFO [stderr] 
Dec 02 00:38:28.564 INFO [stderr] warning: variant `Merkle_root` should have a camel case name such as `MerkleRoot`
Dec 02 00:38:28.564 INFO [stderr]   --> src/blockchain/block.rs:88:52
Dec 02 00:38:28.564 INFO [stderr]    |
Dec 02 00:38:28.564 INFO [stderr] 88 |         enum Field { Version, Timestamp, Previous, Merkle_root };
Dec 02 00:38:28.564 INFO [stderr]    |                                                    ^^^^^^^^^^^
Dec 02 00:38:28.564 INFO [stderr]    |
Dec 02 00:38:28.564 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 02 00:38:28.564 INFO [stderr] 
Dec 02 00:38:28.566 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 00:38:28.566 INFO [stderr]   --> src/blockchain/chain.rs:83:21
Dec 02 00:38:28.566 INFO [stderr]    |
Dec 02 00:38:28.566 INFO [stderr] 83 |                     writeln!(&mut io::stderr(), "read_chain: {}", e);
Dec 02 00:38:28.566 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.566 INFO [stderr]    |
Dec 02 00:38:28.566 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 02 00:38:28.566 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 00:38:28.566 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 02 00:38:28.566 INFO [stderr] 
Dec 02 00:38:28.566 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 00:38:28.566 INFO [stderr]   --> src/blockchain/transaction.rs:19:9
Dec 02 00:38:28.566 INFO [stderr]    |
Dec 02 00:38:28.566 INFO [stderr] 19 |         hash.write_all(&self.hash);
Dec 02 00:38:28.566 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 00:38:28.566 INFO [stderr]    |
Dec 02 00:38:28.566 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 00:38:28.566 INFO [stderr] 
Dec 02 00:38:28.999 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
Dec 02 00:38:29.005 INFO [stderr] su: No module specific data is present
Dec 02 00:38:29.293 INFO running `"docker" "inspect" "87b69d04e729b03b6e69755bd8c83b5e744a6c62b49318dd557dee59d140fedc"`
Dec 02 00:38:29.433 INFO running `"docker" "rm" "-f" "87b69d04e729b03b6e69755bd8c83b5e744a6c62b49318dd557dee59d140fedc"`
Dec 02 00:38:29.525 INFO [stdout] 87b69d04e729b03b6e69755bd8c83b5e744a6c62b49318dd557dee59d140fedc
Dec 02 00:38:29.528 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 00:38:29.660 INFO [stdout] e081e9d4367ca5c77b8fbd3f4ef0eab8740bbdab158e833433fee05cdbc6d2b4
Dec 02 00:38:29.662 INFO running `"docker" "start" "-a" "e081e9d4367ca5c77b8fbd3f4ef0eab8740bbdab158e833433fee05cdbc6d2b4"`
Dec 02 00:38:30.482 INFO [stderr] usermod: no changes
Dec 02 00:38:30.571 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Dec 02 00:38:30.571 INFO [stderr]      Running /target/debug/deps/rustychain-b857fdc67d9b6788
Dec 02 00:38:30.583 INFO [stdout] 
Dec 02 00:38:30.583 INFO [stdout] running 0 tests
Dec 02 00:38:30.583 INFO [stdout] 
Dec 02 00:38:30.583 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 02 00:38:30.583 INFO [stdout] 
Dec 02 00:38:30.587 INFO [stderr] su: No module specific data is present
Dec 02 00:38:31.106 INFO running `"docker" "inspect" "e081e9d4367ca5c77b8fbd3f4ef0eab8740bbdab158e833433fee05cdbc6d2b4"`
Dec 02 00:38:31.358 INFO running `"docker" "rm" "-f" "e081e9d4367ca5c77b8fbd3f4ef0eab8740bbdab158e833433fee05cdbc6d2b4"`
Dec 02 00:38:31.508 INFO [stdout] e081e9d4367ca5c77b8fbd3f4ef0eab8740bbdab158e833433fee05cdbc6d2b4
