Dec 06 06:51:50.749 INFO testing andybug/rustychain against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 06 06:51:50.750 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 06:51:50.999 INFO [stdout] bdd3ec39676be095425dac116fc6adb5e800edb83668bd825e61a48f14cfc88e
Dec 06 06:51:51.002 INFO running `"docker" "start" "-a" "bdd3ec39676be095425dac116fc6adb5e800edb83668bd825e61a48f14cfc88e"`
Dec 06 06:51:51.521 INFO [stderr] usermod: no changes
Dec 06 06:51:51.598 INFO [stderr]    Compiling serde v1.0.14
Dec 06 06:51:51.600 INFO [stderr]    Compiling generic-array v0.8.3
Dec 06 06:51:51.600 INFO [stderr]    Compiling serde_derive v1.0.14
Dec 06 06:51:52.192 INFO [stderr]    Compiling crypto-mac v0.4.0
Dec 06 06:51:52.192 INFO [stderr]    Compiling digest v0.6.2
Dec 06 06:51:52.575 INFO [stderr]    Compiling blake2 v0.6.1
Dec 06 06:52:01.379 INFO [stderr]    Compiling serde_yaml v0.7.1
Dec 06 06:52:03.508 INFO [stderr]    Compiling rustychain v0.1.0 (/source)
Dec 06 06:52:04.284 INFO [stderr] warning: unused import: `SeqAccess`
Dec 06 06:52:04.284 INFO [stderr]  --> src/blockchain/block.rs:9:70
Dec 06 06:52:04.284 INFO [stderr]   |
Dec 06 06:52:04.284 INFO [stderr] 9 | use self::serde::de::{Visitor, Deserialize, Deserializer, MapAccess, SeqAccess};
Dec 06 06:52:04.284 INFO [stderr]   |                                                                      ^^^^^^^^^
Dec 06 06:52:04.284 INFO [stderr]   |
Dec 06 06:52:04.284 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 06:52:04.284 INFO [stderr] 
Dec 06 06:52:04.284 INFO [stderr] warning: unused import: `std::fs`
Dec 06 06:52:04.284 INFO [stderr]  --> src/blockchain/chain.rs:5:5
Dec 06 06:52:04.284 INFO [stderr]   |
Dec 06 06:52:04.284 INFO [stderr] 5 | use std::fs;
Dec 06 06:52:04.284 INFO [stderr]   |     ^^^^^^^
Dec 06 06:52:04.284 INFO [stderr] 
Dec 06 06:52:04.284 INFO [stderr] warning: unused import: `Hash256`
Dec 06 06:52:04.284 INFO [stderr]   --> src/blockchain/chain.rs:14:18
Dec 06 06:52:04.285 INFO [stderr]    |
Dec 06 06:52:04.285 INFO [stderr] 14 | use util::hash::{Hash256, HASH256_BYTES};
Dec 06 06:52:04.285 INFO [stderr]    |                  ^^^^^^^
Dec 06 06:52:04.285 INFO [stderr] 
Dec 06 06:52:04.285 INFO [stderr] warning: unused import: `FromHex`
Dec 06 06:52:04.285 INFO [stderr]  --> src/blockchain/transaction.rs:9:17
Dec 06 06:52:04.285 INFO [stderr]   |
Dec 06 06:52:04.285 INFO [stderr] 9 | use util::hex::{FromHex, ToHex};
Dec 06 06:52:04.285 INFO [stderr]   |                 ^^^^^^^
Dec 06 06:52:04.285 INFO [stderr] 
Dec 06 06:52:04.452 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 06 06:52:04.452 INFO [stderr]  --> src/blockchain/chain.rs:9:5
Dec 06 06:52:04.452 INFO [stderr]   |
Dec 06 06:52:04.452 INFO [stderr] 9 | use std::io::prelude::*;
Dec 06 06:52:04.452 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 06 06:52:04.452 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: method is never used: `reset`
Dec 06 06:52:04.521 INFO [stderr]   --> src/util/hash.rs:25:5
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr] 25 |     pub fn reset(&mut self) {
Dec 06 06:52:04.521 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 06 06:52:04.521 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: function is never used: `now`
Dec 06 06:52:04.521 INFO [stderr]  --> src/util/time.rs:3:1
Dec 06 06:52:04.521 INFO [stderr]   |
Dec 06 06:52:04.521 INFO [stderr] 3 | pub fn now() -> u64 {
Dec 06 06:52:04.521 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: method is never used: `new`
Dec 06 06:52:04.521 INFO [stderr]   --> src/blockchain/block.rs:26:5
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr] 26 |     pub fn new() -> Block {
Dec 06 06:52:04.521 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 06 06:52:04.521 INFO [stderr]   --> src/blockchain/block.rs:36:5
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr] 36 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 06 06:52:04.521 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: method is never used: `set_previous`
Dec 06 06:52:04.521 INFO [stderr]   --> src/blockchain/block.rs:40:5
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr] 40 |     pub fn set_previous(&mut self, p: &[u8; HASH256_BYTES]) {
Dec 06 06:52:04.521 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: method is never used: `add_transaction`
Dec 06 06:52:04.521 INFO [stderr]   --> src/blockchain/block.rs:48:5
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr] 48 |     pub fn add_transaction(&mut self, tx: Transaction) {
Dec 06 06:52:04.521 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: method is never used: `new`
Dec 06 06:52:04.521 INFO [stderr]   --> src/blockchain/transaction.rs:58:5
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr] 58 |     pub fn new() -> Transaction {
Dec 06 06:52:04.521 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 06 06:52:04.521 INFO [stderr]   --> src/blockchain/transaction.rs:67:5
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr] 67 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 06 06:52:04.521 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: method is never used: `add_output`
Dec 06 06:52:04.521 INFO [stderr]   --> src/blockchain/transaction.rs:71:5
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr] 71 |     pub fn add_output(&mut self, amount: u64) {
Dec 06 06:52:04.521 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr] 
Dec 06 06:52:04.521 INFO [stderr] warning: variant `Merkle_root` should have a camel case name such as `MerkleRoot`
Dec 06 06:52:04.521 INFO [stderr]   --> src/blockchain/block.rs:88:52
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr] 88 |         enum Field { Version, Timestamp, Previous, Merkle_root };
Dec 06 06:52:04.521 INFO [stderr]    |                                                    ^^^^^^^^^^^
Dec 06 06:52:04.521 INFO [stderr]    |
Dec 06 06:52:04.521 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 06 06:52:04.522 INFO [stderr] 
Dec 06 06:52:04.522 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:52:04.522 INFO [stderr]   --> src/blockchain/chain.rs:83:21
Dec 06 06:52:04.522 INFO [stderr]    |
Dec 06 06:52:04.522 INFO [stderr] 83 |                     writeln!(&mut io::stderr(), "read_chain: {}", e);
Dec 06 06:52:04.522 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.522 INFO [stderr]    |
Dec 06 06:52:04.522 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 06:52:04.522 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:52:04.522 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 06 06:52:04.522 INFO [stderr] 
Dec 06 06:52:04.522 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:52:04.522 INFO [stderr]   --> src/blockchain/transaction.rs:19:9
Dec 06 06:52:04.522 INFO [stderr]    |
Dec 06 06:52:04.522 INFO [stderr] 19 |         hash.write_all(&self.hash);
Dec 06 06:52:04.522 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:04.522 INFO [stderr]    |
Dec 06 06:52:04.522 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:52:04.522 INFO [stderr] 
Dec 06 06:52:05.655 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.12s
Dec 06 06:52:05.659 INFO [stderr] su: No module specific data is present
Dec 06 06:52:05.986 INFO running `"docker" "inspect" "bdd3ec39676be095425dac116fc6adb5e800edb83668bd825e61a48f14cfc88e"`
Dec 06 06:52:06.140 INFO running `"docker" "rm" "-f" "bdd3ec39676be095425dac116fc6adb5e800edb83668bd825e61a48f14cfc88e"`
Dec 06 06:52:06.216 INFO [stdout] bdd3ec39676be095425dac116fc6adb5e800edb83668bd825e61a48f14cfc88e
Dec 06 06:52:06.220 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 06:52:06.520 INFO [stdout] 893618e8a4c47f420ecbad9d240f18e80370b1518ff6220a82645d0728314699
Dec 06 06:52:06.522 INFO running `"docker" "start" "-a" "893618e8a4c47f420ecbad9d240f18e80370b1518ff6220a82645d0728314699"`
Dec 06 06:52:07.083 INFO [stderr] usermod: no changes
Dec 06 06:52:07.137 INFO [stderr]    Compiling rustychain v0.1.0 (/source)
Dec 06 06:52:07.932 INFO [stderr] warning: unused import: `SeqAccess`
Dec 06 06:52:07.932 INFO [stderr]  --> src/blockchain/block.rs:9:70
Dec 06 06:52:07.932 INFO [stderr]   |
Dec 06 06:52:07.933 INFO [stderr] 9 | use self::serde::de::{Visitor, Deserialize, Deserializer, MapAccess, SeqAccess};
Dec 06 06:52:07.933 INFO [stderr]   |                                                                      ^^^^^^^^^
Dec 06 06:52:07.933 INFO [stderr]   |
Dec 06 06:52:07.933 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 06:52:07.933 INFO [stderr] 
Dec 06 06:52:07.936 INFO [stderr] warning: unused import: `std::fs`
Dec 06 06:52:07.936 INFO [stderr]  --> src/blockchain/chain.rs:5:5
Dec 06 06:52:07.936 INFO [stderr]   |
Dec 06 06:52:07.936 INFO [stderr] 5 | use std::fs;
Dec 06 06:52:07.936 INFO [stderr]   |     ^^^^^^^
Dec 06 06:52:07.936 INFO [stderr] 
Dec 06 06:52:07.936 INFO [stderr] warning: unused import: `Hash256`
Dec 06 06:52:07.936 INFO [stderr]   --> src/blockchain/chain.rs:14:18
Dec 06 06:52:07.936 INFO [stderr]    |
Dec 06 06:52:07.936 INFO [stderr] 14 | use util::hash::{Hash256, HASH256_BYTES};
Dec 06 06:52:07.936 INFO [stderr]    |                  ^^^^^^^
Dec 06 06:52:07.936 INFO [stderr] 
Dec 06 06:52:07.936 INFO [stderr] warning: unused import: `FromHex`
Dec 06 06:52:07.936 INFO [stderr]  --> src/blockchain/transaction.rs:9:17
Dec 06 06:52:07.936 INFO [stderr]   |
Dec 06 06:52:07.936 INFO [stderr] 9 | use util::hex::{FromHex, ToHex};
Dec 06 06:52:07.936 INFO [stderr]   |                 ^^^^^^^
Dec 06 06:52:07.936 INFO [stderr] 
Dec 06 06:52:08.083 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 06 06:52:08.083 INFO [stderr]  --> src/blockchain/chain.rs:9:5
Dec 06 06:52:08.083 INFO [stderr]   |
Dec 06 06:52:08.083 INFO [stderr] 9 | use std::io::prelude::*;
Dec 06 06:52:08.083 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 06 06:52:08.083 INFO [stderr] 
Dec 06 06:52:08.145 INFO [stderr] warning: method is never used: `reset`
Dec 06 06:52:08.145 INFO [stderr]   --> src/util/hash.rs:25:5
Dec 06 06:52:08.145 INFO [stderr]    |
Dec 06 06:52:08.145 INFO [stderr] 25 |     pub fn reset(&mut self) {
Dec 06 06:52:08.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.145 INFO [stderr]    |
Dec 06 06:52:08.145 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 06 06:52:08.145 INFO [stderr] 
Dec 06 06:52:08.145 INFO [stderr] warning: function is never used: `now`
Dec 06 06:52:08.145 INFO [stderr]  --> src/util/time.rs:3:1
Dec 06 06:52:08.145 INFO [stderr]   |
Dec 06 06:52:08.145 INFO [stderr] 3 | pub fn now() -> u64 {
Dec 06 06:52:08.145 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.145 INFO [stderr] 
Dec 06 06:52:08.145 INFO [stderr] warning: method is never used: `new`
Dec 06 06:52:08.145 INFO [stderr]   --> src/blockchain/block.rs:26:5
Dec 06 06:52:08.145 INFO [stderr]    |
Dec 06 06:52:08.145 INFO [stderr] 26 |     pub fn new() -> Block {
Dec 06 06:52:08.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.145 INFO [stderr] 
Dec 06 06:52:08.145 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 06 06:52:08.145 INFO [stderr]   --> src/blockchain/block.rs:36:5
Dec 06 06:52:08.145 INFO [stderr]    |
Dec 06 06:52:08.145 INFO [stderr] 36 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 06 06:52:08.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.145 INFO [stderr] 
Dec 06 06:52:08.145 INFO [stderr] warning: method is never used: `set_previous`
Dec 06 06:52:08.145 INFO [stderr]   --> src/blockchain/block.rs:40:5
Dec 06 06:52:08.145 INFO [stderr]    |
Dec 06 06:52:08.145 INFO [stderr] 40 |     pub fn set_previous(&mut self, p: &[u8; HASH256_BYTES]) {
Dec 06 06:52:08.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.145 INFO [stderr] 
Dec 06 06:52:08.145 INFO [stderr] warning: method is never used: `add_transaction`
Dec 06 06:52:08.145 INFO [stderr]   --> src/blockchain/block.rs:48:5
Dec 06 06:52:08.145 INFO [stderr]    |
Dec 06 06:52:08.145 INFO [stderr] 48 |     pub fn add_transaction(&mut self, tx: Transaction) {
Dec 06 06:52:08.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.145 INFO [stderr] 
Dec 06 06:52:08.145 INFO [stderr] warning: method is never used: `new`
Dec 06 06:52:08.145 INFO [stderr]   --> src/blockchain/transaction.rs:58:5
Dec 06 06:52:08.145 INFO [stderr]    |
Dec 06 06:52:08.145 INFO [stderr] 58 |     pub fn new() -> Transaction {
Dec 06 06:52:08.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.145 INFO [stderr] 
Dec 06 06:52:08.145 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 06 06:52:08.145 INFO [stderr]   --> src/blockchain/transaction.rs:67:5
Dec 06 06:52:08.145 INFO [stderr]    |
Dec 06 06:52:08.145 INFO [stderr] 67 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 06 06:52:08.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.145 INFO [stderr] 
Dec 06 06:52:08.145 INFO [stderr] warning: method is never used: `add_output`
Dec 06 06:52:08.145 INFO [stderr]   --> src/blockchain/transaction.rs:71:5
Dec 06 06:52:08.145 INFO [stderr]    |
Dec 06 06:52:08.145 INFO [stderr] 71 |     pub fn add_output(&mut self, amount: u64) {
Dec 06 06:52:08.145 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.145 INFO [stderr] 
Dec 06 06:52:08.146 INFO [stderr] warning: variant `Merkle_root` should have a camel case name such as `MerkleRoot`
Dec 06 06:52:08.146 INFO [stderr]   --> src/blockchain/block.rs:88:52
Dec 06 06:52:08.146 INFO [stderr]    |
Dec 06 06:52:08.146 INFO [stderr] 88 |         enum Field { Version, Timestamp, Previous, Merkle_root };
Dec 06 06:52:08.146 INFO [stderr]    |                                                    ^^^^^^^^^^^
Dec 06 06:52:08.146 INFO [stderr]    |
Dec 06 06:52:08.146 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 06 06:52:08.146 INFO [stderr] 
Dec 06 06:52:08.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:52:08.148 INFO [stderr]   --> src/blockchain/chain.rs:83:21
Dec 06 06:52:08.148 INFO [stderr]    |
Dec 06 06:52:08.148 INFO [stderr] 83 |                     writeln!(&mut io::stderr(), "read_chain: {}", e);
Dec 06 06:52:08.148 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.148 INFO [stderr]    |
Dec 06 06:52:08.148 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 06:52:08.148 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:52:08.148 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 06 06:52:08.148 INFO [stderr] 
Dec 06 06:52:08.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 06:52:08.148 INFO [stderr]   --> src/blockchain/transaction.rs:19:9
Dec 06 06:52:08.148 INFO [stderr]    |
Dec 06 06:52:08.148 INFO [stderr] 19 |         hash.write_all(&self.hash);
Dec 06 06:52:08.148 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 06:52:08.148 INFO [stderr]    |
Dec 06 06:52:08.148 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 06:52:08.148 INFO [stderr] 
Dec 06 06:52:08.472 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
Dec 06 06:52:08.476 INFO [stderr] su: No module specific data is present
Dec 06 06:52:08.957 INFO running `"docker" "inspect" "893618e8a4c47f420ecbad9d240f18e80370b1518ff6220a82645d0728314699"`
Dec 06 06:52:09.033 INFO running `"docker" "rm" "-f" "893618e8a4c47f420ecbad9d240f18e80370b1518ff6220a82645d0728314699"`
Dec 06 06:52:09.138 INFO [stdout] 893618e8a4c47f420ecbad9d240f18e80370b1518ff6220a82645d0728314699
Dec 06 06:52:09.140 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 06 06:52:09.295 INFO [stdout] 041e0b924fbe87548fdadc93953e438aac46632ec67498fa6d0265bf3e05da29
Dec 06 06:52:09.297 INFO running `"docker" "start" "-a" "041e0b924fbe87548fdadc93953e438aac46632ec67498fa6d0265bf3e05da29"`
Dec 06 06:52:09.679 INFO [stderr] usermod: no changes
Dec 06 06:52:09.739 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 06 06:52:09.741 INFO [stderr]      Running /target/debug/deps/rustychain-f981eb1cef9c436d
Dec 06 06:52:09.745 INFO [stdout] 
Dec 06 06:52:09.745 INFO [stdout] running 0 tests
Dec 06 06:52:09.745 INFO [stdout] 
Dec 06 06:52:09.745 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 06:52:09.745 INFO [stdout] 
Dec 06 06:52:09.747 INFO [stderr] su: No module specific data is present
Dec 06 06:52:10.055 INFO running `"docker" "inspect" "041e0b924fbe87548fdadc93953e438aac46632ec67498fa6d0265bf3e05da29"`
Dec 06 06:52:10.138 INFO running `"docker" "rm" "-f" "041e0b924fbe87548fdadc93953e438aac46632ec67498fa6d0265bf3e05da29"`
Dec 06 06:52:10.369 INFO [stdout] 041e0b924fbe87548fdadc93953e438aac46632ec67498fa6d0265bf3e05da29