Nov 17 09:22:02.300 INFO testing andybug/rustychain against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 17 09:22:02.306 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 17 09:22:02.687 INFO [stdout] 291461585a035c4984607145d1bb043af742ce410dde271ced9a59c1f2be5426
Nov 17 09:22:02.693 INFO running `"docker" "start" "-a" "291461585a035c4984607145d1bb043af742ce410dde271ced9a59c1f2be5426"`
Nov 17 09:22:03.283 INFO [stderr] usermod: no changes
Nov 17 09:22:03.338 INFO [stderr]    Compiling serde_yaml v0.7.1
Nov 17 09:22:03.339 INFO [stderr]    Compiling generic-array v0.8.3
Nov 17 09:22:03.957 INFO [stderr]    Compiling digest v0.6.2
Nov 17 09:22:03.958 INFO [stderr]    Compiling crypto-mac v0.4.0
Nov 17 09:22:04.301 INFO [stderr]    Compiling blake2 v0.6.1
Nov 17 09:22:06.520 INFO [stderr]    Compiling rustychain v0.1.0 (/source)
Nov 17 09:22:07.512 INFO [stderr] warning: unused import: `SeqAccess`
Nov 17 09:22:07.512 INFO [stderr]  --> src/blockchain/block.rs:9:70
Nov 17 09:22:07.512 INFO [stderr]   |
Nov 17 09:22:07.512 INFO [stderr] 9 | use self::serde::de::{Visitor, Deserialize, Deserializer, MapAccess, SeqAccess};
Nov 17 09:22:07.512 INFO [stderr]   |                                                                      ^^^^^^^^^
Nov 17 09:22:07.512 INFO [stderr]   |
Nov 17 09:22:07.512 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 17 09:22:07.512 INFO [stderr] 
Nov 17 09:22:07.527 INFO [stderr] warning: unused import: `std::fs`
Nov 17 09:22:07.527 INFO [stderr]  --> src/blockchain/chain.rs:5:5
Nov 17 09:22:07.527 INFO [stderr]   |
Nov 17 09:22:07.527 INFO [stderr] 5 | use std::fs;
Nov 17 09:22:07.527 INFO [stderr]   |     ^^^^^^^
Nov 17 09:22:07.527 INFO [stderr] 
Nov 17 09:22:07.527 INFO [stderr] warning: unused import: `Hash256`
Nov 17 09:22:07.527 INFO [stderr]   --> src/blockchain/chain.rs:14:18
Nov 17 09:22:07.527 INFO [stderr]    |
Nov 17 09:22:07.527 INFO [stderr] 14 | use util::hash::{Hash256, HASH256_BYTES};
Nov 17 09:22:07.527 INFO [stderr]    |                  ^^^^^^^
Nov 17 09:22:07.527 INFO [stderr] 
Nov 17 09:22:07.527 INFO [stderr] warning: unused import: `FromHex`
Nov 17 09:22:07.527 INFO [stderr]  --> src/blockchain/transaction.rs:9:17
Nov 17 09:22:07.527 INFO [stderr]   |
Nov 17 09:22:07.527 INFO [stderr] 9 | use util::hex::{FromHex, ToHex};
Nov 17 09:22:07.527 INFO [stderr]   |                 ^^^^^^^
Nov 17 09:22:07.527 INFO [stderr] 
Nov 17 09:22:07.767 INFO [stderr] warning: unused import: `std::io::prelude`
Nov 17 09:22:07.767 INFO [stderr]  --> src/blockchain/chain.rs:9:5
Nov 17 09:22:07.767 INFO [stderr]   |
Nov 17 09:22:07.767 INFO [stderr] 9 | use std::io::prelude::*;
Nov 17 09:22:07.767 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Nov 17 09:22:07.767 INFO [stderr] 
Nov 17 09:22:07.867 INFO [stderr] warning: method is never used: `reset`
Nov 17 09:22:07.867 INFO [stderr]   --> src/util/hash.rs:25:5
Nov 17 09:22:07.867 INFO [stderr]    |
Nov 17 09:22:07.867 INFO [stderr] 25 |     pub fn reset(&mut self) {
Nov 17 09:22:07.867 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.867 INFO [stderr]    |
Nov 17 09:22:07.867 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 17 09:22:07.867 INFO [stderr] 
Nov 17 09:22:07.867 INFO [stderr] warning: function is never used: `now`
Nov 17 09:22:07.867 INFO [stderr]  --> src/util/time.rs:3:1
Nov 17 09:22:07.867 INFO [stderr]   |
Nov 17 09:22:07.867 INFO [stderr] 3 | pub fn now() -> u64 {
Nov 17 09:22:07.867 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.867 INFO [stderr] 
Nov 17 09:22:07.867 INFO [stderr] warning: method is never used: `new`
Nov 17 09:22:07.867 INFO [stderr]   --> src/blockchain/block.rs:26:5
Nov 17 09:22:07.867 INFO [stderr]    |
Nov 17 09:22:07.867 INFO [stderr] 26 |     pub fn new() -> Block {
Nov 17 09:22:07.867 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.867 INFO [stderr] 
Nov 17 09:22:07.867 INFO [stderr] warning: method is never used: `set_timestamp`
Nov 17 09:22:07.867 INFO [stderr]   --> src/blockchain/block.rs:36:5
Nov 17 09:22:07.867 INFO [stderr]    |
Nov 17 09:22:07.867 INFO [stderr] 36 |     pub fn set_timestamp(&mut self, ts: u64) {
Nov 17 09:22:07.867 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.867 INFO [stderr] 
Nov 17 09:22:07.867 INFO [stderr] warning: method is never used: `set_previous`
Nov 17 09:22:07.867 INFO [stderr]   --> src/blockchain/block.rs:40:5
Nov 17 09:22:07.867 INFO [stderr]    |
Nov 17 09:22:07.867 INFO [stderr] 40 |     pub fn set_previous(&mut self, p: &[u8; HASH256_BYTES]) {
Nov 17 09:22:07.867 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.867 INFO [stderr] 
Nov 17 09:22:07.867 INFO [stderr] warning: method is never used: `add_transaction`
Nov 17 09:22:07.867 INFO [stderr]   --> src/blockchain/block.rs:48:5
Nov 17 09:22:07.867 INFO [stderr]    |
Nov 17 09:22:07.867 INFO [stderr] 48 |     pub fn add_transaction(&mut self, tx: Transaction) {
Nov 17 09:22:07.867 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.867 INFO [stderr] 
Nov 17 09:22:07.867 INFO [stderr] warning: method is never used: `new`
Nov 17 09:22:07.867 INFO [stderr]   --> src/blockchain/transaction.rs:58:5
Nov 17 09:22:07.867 INFO [stderr]    |
Nov 17 09:22:07.867 INFO [stderr] 58 |     pub fn new() -> Transaction {
Nov 17 09:22:07.868 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.868 INFO [stderr] 
Nov 17 09:22:07.868 INFO [stderr] warning: method is never used: `set_timestamp`
Nov 17 09:22:07.868 INFO [stderr]   --> src/blockchain/transaction.rs:67:5
Nov 17 09:22:07.868 INFO [stderr]    |
Nov 17 09:22:07.868 INFO [stderr] 67 |     pub fn set_timestamp(&mut self, ts: u64) {
Nov 17 09:22:07.868 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.868 INFO [stderr] 
Nov 17 09:22:07.868 INFO [stderr] warning: method is never used: `add_output`
Nov 17 09:22:07.868 INFO [stderr]   --> src/blockchain/transaction.rs:71:5
Nov 17 09:22:07.868 INFO [stderr]    |
Nov 17 09:22:07.868 INFO [stderr] 71 |     pub fn add_output(&mut self, amount: u64) {
Nov 17 09:22:07.868 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.868 INFO [stderr] 
Nov 17 09:22:07.868 INFO [stderr] warning: variant `Merkle_root` should have a camel case name such as `MerkleRoot`
Nov 17 09:22:07.868 INFO [stderr]   --> src/blockchain/block.rs:88:52
Nov 17 09:22:07.868 INFO [stderr]    |
Nov 17 09:22:07.868 INFO [stderr] 88 |         enum Field { Version, Timestamp, Previous, Merkle_root };
Nov 17 09:22:07.868 INFO [stderr]    |                                                    ^^^^^^^^^^^
Nov 17 09:22:07.868 INFO [stderr]    |
Nov 17 09:22:07.868 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Nov 17 09:22:07.868 INFO [stderr] 
Nov 17 09:22:07.871 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 09:22:07.871 INFO [stderr]   --> src/blockchain/chain.rs:83:21
Nov 17 09:22:07.871 INFO [stderr]    |
Nov 17 09:22:07.871 INFO [stderr] 83 |                     writeln!(&mut io::stderr(), "read_chain: {}", e);
Nov 17 09:22:07.871 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.871 INFO [stderr]    |
Nov 17 09:22:07.871 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 09:22:07.871 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 09:22:07.871 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)
Nov 17 09:22:07.871 INFO [stderr] 
Nov 17 09:22:07.871 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 09:22:07.871 INFO [stderr]   --> src/blockchain/transaction.rs:19:9
Nov 17 09:22:07.871 INFO [stderr]    |
Nov 17 09:22:07.871 INFO [stderr] 19 |         hash.write_all(&self.hash);
Nov 17 09:22:07.871 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:07.871 INFO [stderr]    |
Nov 17 09:22:07.871 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 09:22:07.871 INFO [stderr] 
Nov 17 09:22:09.671 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.38s
Nov 17 09:22:09.676 INFO [stderr] su: No module specific data is present
Nov 17 09:22:09.966 INFO running `"docker" "inspect" "291461585a035c4984607145d1bb043af742ce410dde271ced9a59c1f2be5426"`
Nov 17 09:22:10.114 INFO running `"docker" "rm" "-f" "291461585a035c4984607145d1bb043af742ce410dde271ced9a59c1f2be5426"`
Nov 17 09:22:10.236 INFO [stdout] 291461585a035c4984607145d1bb043af742ce410dde271ced9a59c1f2be5426
Nov 17 09:22:10.241 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 17 09:22:10.555 INFO [stdout] c37e1b145e84538014a83e5bb72bbfd75d328647eae9b213a51052636689dfbd
Nov 17 09:22:10.556 INFO running `"docker" "start" "-a" "c37e1b145e84538014a83e5bb72bbfd75d328647eae9b213a51052636689dfbd"`
Nov 17 09:22:11.503 INFO [stderr] usermod: no changes
Nov 17 09:22:11.579 INFO [stderr]    Compiling rustychain v0.1.0 (/source)
Nov 17 09:22:12.329 INFO [stderr] warning: unused import: `SeqAccess`
Nov 17 09:22:12.329 INFO [stderr]  --> src/blockchain/block.rs:9:70
Nov 17 09:22:12.329 INFO [stderr]   |
Nov 17 09:22:12.329 INFO [stderr] 9 | use self::serde::de::{Visitor, Deserialize, Deserializer, MapAccess, SeqAccess};
Nov 17 09:22:12.329 INFO [stderr]   |                                                                      ^^^^^^^^^
Nov 17 09:22:12.329 INFO [stderr]   |
Nov 17 09:22:12.329 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 17 09:22:12.329 INFO [stderr] 
Nov 17 09:22:12.329 INFO [stderr] warning: unused import: `std::fs`
Nov 17 09:22:12.329 INFO [stderr]  --> src/blockchain/chain.rs:5:5
Nov 17 09:22:12.329 INFO [stderr]   |
Nov 17 09:22:12.329 INFO [stderr] 5 | use std::fs;
Nov 17 09:22:12.329 INFO [stderr]   |     ^^^^^^^
Nov 17 09:22:12.329 INFO [stderr] 
Nov 17 09:22:12.329 INFO [stderr] warning: unused import: `Hash256`
Nov 17 09:22:12.329 INFO [stderr]   --> src/blockchain/chain.rs:14:18
Nov 17 09:22:12.329 INFO [stderr]    |
Nov 17 09:22:12.329 INFO [stderr] 14 | use util::hash::{Hash256, HASH256_BYTES};
Nov 17 09:22:12.329 INFO [stderr]    |                  ^^^^^^^
Nov 17 09:22:12.329 INFO [stderr] 
Nov 17 09:22:12.329 INFO [stderr] warning: unused import: `FromHex`
Nov 17 09:22:12.329 INFO [stderr]  --> src/blockchain/transaction.rs:9:17
Nov 17 09:22:12.329 INFO [stderr]   |
Nov 17 09:22:12.329 INFO [stderr] 9 | use util::hex::{FromHex, ToHex};
Nov 17 09:22:12.329 INFO [stderr]   |                 ^^^^^^^
Nov 17 09:22:12.329 INFO [stderr] 
Nov 17 09:22:12.477 INFO [stderr] warning: unused import: `std::io::prelude`
Nov 17 09:22:12.478 INFO [stderr]  --> src/blockchain/chain.rs:9:5
Nov 17 09:22:12.478 INFO [stderr]   |
Nov 17 09:22:12.478 INFO [stderr] 9 | use std::io::prelude::*;
Nov 17 09:22:12.479 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Nov 17 09:22:12.479 INFO [stderr] 
Nov 17 09:22:12.542 INFO [stderr] warning: method is never used: `reset`
Nov 17 09:22:12.542 INFO [stderr]   --> src/util/hash.rs:25:5
Nov 17 09:22:12.542 INFO [stderr]    |
Nov 17 09:22:12.542 INFO [stderr] 25 |     pub fn reset(&mut self) {
Nov 17 09:22:12.542 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.542 INFO [stderr]    |
Nov 17 09:22:12.542 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 17 09:22:12.542 INFO [stderr] 
Nov 17 09:22:12.542 INFO [stderr] warning: function is never used: `now`
Nov 17 09:22:12.542 INFO [stderr]  --> src/util/time.rs:3:1
Nov 17 09:22:12.542 INFO [stderr]   |
Nov 17 09:22:12.542 INFO [stderr] 3 | pub fn now() -> u64 {
Nov 17 09:22:12.542 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.542 INFO [stderr] 
Nov 17 09:22:12.542 INFO [stderr] warning: method is never used: `new`
Nov 17 09:22:12.542 INFO [stderr]   --> src/blockchain/block.rs:26:5
Nov 17 09:22:12.542 INFO [stderr]    |
Nov 17 09:22:12.542 INFO [stderr] 26 |     pub fn new() -> Block {
Nov 17 09:22:12.542 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.542 INFO [stderr] 
Nov 17 09:22:12.542 INFO [stderr] warning: method is never used: `set_timestamp`
Nov 17 09:22:12.542 INFO [stderr]   --> src/blockchain/block.rs:36:5
Nov 17 09:22:12.542 INFO [stderr]    |
Nov 17 09:22:12.543 INFO [stderr] 36 |     pub fn set_timestamp(&mut self, ts: u64) {
Nov 17 09:22:12.543 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.543 INFO [stderr] 
Nov 17 09:22:12.543 INFO [stderr] warning: method is never used: `set_previous`
Nov 17 09:22:12.543 INFO [stderr]   --> src/blockchain/block.rs:40:5
Nov 17 09:22:12.543 INFO [stderr]    |
Nov 17 09:22:12.543 INFO [stderr] 40 |     pub fn set_previous(&mut self, p: &[u8; HASH256_BYTES]) {
Nov 17 09:22:12.543 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.543 INFO [stderr] 
Nov 17 09:22:12.543 INFO [stderr] warning: method is never used: `add_transaction`
Nov 17 09:22:12.543 INFO [stderr]   --> src/blockchain/block.rs:48:5
Nov 17 09:22:12.543 INFO [stderr]    |
Nov 17 09:22:12.543 INFO [stderr] 48 |     pub fn add_transaction(&mut self, tx: Transaction) {
Nov 17 09:22:12.543 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.543 INFO [stderr] 
Nov 17 09:22:12.543 INFO [stderr] warning: method is never used: `new`
Nov 17 09:22:12.543 INFO [stderr]   --> src/blockchain/transaction.rs:58:5
Nov 17 09:22:12.543 INFO [stderr]    |
Nov 17 09:22:12.543 INFO [stderr] 58 |     pub fn new() -> Transaction {
Nov 17 09:22:12.543 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.543 INFO [stderr] 
Nov 17 09:22:12.543 INFO [stderr] warning: method is never used: `set_timestamp`
Nov 17 09:22:12.543 INFO [stderr]   --> src/blockchain/transaction.rs:67:5
Nov 17 09:22:12.543 INFO [stderr]    |
Nov 17 09:22:12.543 INFO [stderr] 67 |     pub fn set_timestamp(&mut self, ts: u64) {
Nov 17 09:22:12.543 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.543 INFO [stderr] 
Nov 17 09:22:12.543 INFO [stderr] warning: method is never used: `add_output`
Nov 17 09:22:12.543 INFO [stderr]   --> src/blockchain/transaction.rs:71:5
Nov 17 09:22:12.543 INFO [stderr]    |
Nov 17 09:22:12.543 INFO [stderr] 71 |     pub fn add_output(&mut self, amount: u64) {
Nov 17 09:22:12.543 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.543 INFO [stderr] 
Nov 17 09:22:12.543 INFO [stderr] warning: variant `Merkle_root` should have a camel case name such as `MerkleRoot`
Nov 17 09:22:12.543 INFO [stderr]   --> src/blockchain/block.rs:88:52
Nov 17 09:22:12.543 INFO [stderr]    |
Nov 17 09:22:12.543 INFO [stderr] 88 |         enum Field { Version, Timestamp, Previous, Merkle_root };
Nov 17 09:22:12.543 INFO [stderr]    |                                                    ^^^^^^^^^^^
Nov 17 09:22:12.543 INFO [stderr]    |
Nov 17 09:22:12.543 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Nov 17 09:22:12.544 INFO [stderr] 
Nov 17 09:22:12.544 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 09:22:12.544 INFO [stderr]   --> src/blockchain/chain.rs:83:21
Nov 17 09:22:12.544 INFO [stderr]    |
Nov 17 09:22:12.544 INFO [stderr] 83 |                     writeln!(&mut io::stderr(), "read_chain: {}", e);
Nov 17 09:22:12.544 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.544 INFO [stderr]    |
Nov 17 09:22:12.544 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 17 09:22:12.544 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 09:22:12.544 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)
Nov 17 09:22:12.544 INFO [stderr] 
Nov 17 09:22:12.545 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 17 09:22:12.545 INFO [stderr]   --> src/blockchain/transaction.rs:19:9
Nov 17 09:22:12.545 INFO [stderr]    |
Nov 17 09:22:12.545 INFO [stderr] 19 |         hash.write_all(&self.hash);
Nov 17 09:22:12.545 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 09:22:12.545 INFO [stderr]    |
Nov 17 09:22:12.545 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 17 09:22:12.545 INFO [stderr] 
Nov 17 09:22:12.783 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
Nov 17 09:22:12.788 INFO [stderr] su: No module specific data is present
Nov 17 09:22:13.328 INFO running `"docker" "inspect" "c37e1b145e84538014a83e5bb72bbfd75d328647eae9b213a51052636689dfbd"`
Nov 17 09:22:13.473 INFO running `"docker" "rm" "-f" "c37e1b145e84538014a83e5bb72bbfd75d328647eae9b213a51052636689dfbd"`
Nov 17 09:22:13.593 INFO [stdout] c37e1b145e84538014a83e5bb72bbfd75d328647eae9b213a51052636689dfbd
Nov 17 09:22:13.595 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 17 09:22:13.757 INFO [stdout] 2b623ab1619348d950c7b99a64c2df8e7134b41dd78a004bebb7ad4274930098
Nov 17 09:22:13.760 INFO running `"docker" "start" "-a" "2b623ab1619348d950c7b99a64c2df8e7134b41dd78a004bebb7ad4274930098"`
Nov 17 09:22:14.611 INFO [stderr] usermod: no changes
Nov 17 09:22:14.739 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
Nov 17 09:22:14.740 INFO [stdout] 
Nov 17 09:22:14.740 INFO [stderr]      Running /target/debug/deps/rustychain-306b83cdc1abd63a
Nov 17 09:22:14.740 INFO [stdout] running 0 tests
Nov 17 09:22:14.741 INFO [stderr] su: No module specific data is present
Nov 17 09:22:14.741 INFO [stdout] 
Nov 17 09:22:14.741 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 09:22:14.742 INFO [stdout] 
Nov 17 09:22:15.284 INFO running `"docker" "inspect" "2b623ab1619348d950c7b99a64c2df8e7134b41dd78a004bebb7ad4274930098"`
Nov 17 09:22:15.473 INFO running `"docker" "rm" "-f" "2b623ab1619348d950c7b99a64c2df8e7134b41dd78a004bebb7ad4274930098"`
Nov 17 09:22:15.655 INFO [stdout] 2b623ab1619348d950c7b99a64c2df8e7134b41dd78a004bebb7ad4274930098