Dec 18 04:00:09.447 INFO checking andybug/rustychain against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 04:00:09.447 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/andybug/rustychain:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 04:00:09.830 INFO [stdout] c8f157e26b80f968a2ac39985b8cf01bccbc87c8f4c2239dc77b8b3fe58b8506
Dec 18 04:00:09.834 INFO running `"docker" "start" "-a" "c8f157e26b80f968a2ac39985b8cf01bccbc87c8f4c2239dc77b8b3fe58b8506"`
Dec 18 04:00:10.955 INFO [stderr]     Checking serde_yaml v0.7.1
Dec 18 04:00:10.955 INFO [stderr]     Checking blake2 v0.6.1
Dec 18 04:00:12.180 INFO [stderr]     Checking rustychain v0.1.0 (/opt/crater/workdir)
Dec 18 04:00:12.537 INFO [stderr] warning: unused import: `SeqAccess`
Dec 18 04:00:12.537 INFO [stderr]  --> src/blockchain/block.rs:9:70
Dec 18 04:00:12.538 INFO [stderr]   |
Dec 18 04:00:12.538 INFO [stderr] 9 | use self::serde::de::{Visitor, Deserialize, Deserializer, MapAccess, SeqAccess};
Dec 18 04:00:12.538 INFO [stderr]   |                                                                      ^^^^^^^^^
Dec 18 04:00:12.538 INFO [stderr]   |
Dec 18 04:00:12.538 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 04:00:12.538 INFO [stderr] 
Dec 18 04:00:12.538 INFO [stderr] warning: unused import: `std::fs`
Dec 18 04:00:12.538 INFO [stderr]  --> src/blockchain/chain.rs:5:5
Dec 18 04:00:12.538 INFO [stderr]   |
Dec 18 04:00:12.538 INFO [stderr] 5 | use std::fs;
Dec 18 04:00:12.538 INFO [stderr]   |     ^^^^^^^
Dec 18 04:00:12.538 INFO [stderr] 
Dec 18 04:00:12.538 INFO [stderr] warning: unused import: `Hash256`
Dec 18 04:00:12.538 INFO [stderr]   --> src/blockchain/chain.rs:14:18
Dec 18 04:00:12.538 INFO [stderr]    |
Dec 18 04:00:12.538 INFO [stderr] 14 | use util::hash::{Hash256, HASH256_BYTES};
Dec 18 04:00:12.538 INFO [stderr]    |                  ^^^^^^^
Dec 18 04:00:12.538 INFO [stderr] 
Dec 18 04:00:12.538 INFO [stderr] warning: unused import: `FromHex`
Dec 18 04:00:12.538 INFO [stderr]  --> src/blockchain/transaction.rs:9:17
Dec 18 04:00:12.538 INFO [stderr]   |
Dec 18 04:00:12.538 INFO [stderr] 9 | use util::hex::{FromHex, ToHex};
Dec 18 04:00:12.538 INFO [stderr]   |                 ^^^^^^^
Dec 18 04:00:12.538 INFO [stderr] 
Dec 18 04:00:12.559 INFO [stderr] warning: unused import: `SeqAccess`
Dec 18 04:00:12.559 INFO [stderr]  --> src/blockchain/block.rs:9:70
Dec 18 04:00:12.564 INFO [stderr]   |
Dec 18 04:00:12.564 INFO [stderr] 9 | use self::serde::de::{Visitor, Deserialize, Deserializer, MapAccess, SeqAccess};
Dec 18 04:00:12.564 INFO [stderr]   |                                                                      ^^^^^^^^^
Dec 18 04:00:12.564 INFO [stderr]   |
Dec 18 04:00:12.564 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 04:00:12.564 INFO [stderr] 
Dec 18 04:00:12.564 INFO [stderr] warning: unused import: `std::fs`
Dec 18 04:00:12.564 INFO [stderr]  --> src/blockchain/chain.rs:5:5
Dec 18 04:00:12.564 INFO [stderr]   |
Dec 18 04:00:12.564 INFO [stderr] 5 | use std::fs;
Dec 18 04:00:12.564 INFO [stderr]   |     ^^^^^^^
Dec 18 04:00:12.564 INFO [stderr] 
Dec 18 04:00:12.564 INFO [stderr] warning: unused import: `Hash256`
Dec 18 04:00:12.564 INFO [stderr]   --> src/blockchain/chain.rs:14:18
Dec 18 04:00:12.564 INFO [stderr]    |
Dec 18 04:00:12.564 INFO [stderr] 14 | use util::hash::{Hash256, HASH256_BYTES};
Dec 18 04:00:12.564 INFO [stderr]    |                  ^^^^^^^
Dec 18 04:00:12.564 INFO [stderr] 
Dec 18 04:00:12.564 INFO [stderr] warning: unused import: `FromHex`
Dec 18 04:00:12.564 INFO [stderr]  --> src/blockchain/transaction.rs:9:17
Dec 18 04:00:12.564 INFO [stderr]   |
Dec 18 04:00:12.564 INFO [stderr] 9 | use util::hex::{FromHex, ToHex};
Dec 18 04:00:12.564 INFO [stderr]   |                 ^^^^^^^
Dec 18 04:00:12.564 INFO [stderr] 
Dec 18 04:00:12.701 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 18 04:00:12.701 INFO [stderr]  --> src/blockchain/chain.rs:9:5
Dec 18 04:00:12.701 INFO [stderr]   |
Dec 18 04:00:12.701 INFO [stderr] 9 | use std::io::prelude::*;
Dec 18 04:00:12.701 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 18 04:00:12.701 INFO [stderr] 
Dec 18 04:00:12.736 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 18 04:00:12.736 INFO [stderr]  --> src/blockchain/chain.rs:9:5
Dec 18 04:00:12.736 INFO [stderr]   |
Dec 18 04:00:12.736 INFO [stderr] 9 | use std::io::prelude::*;
Dec 18 04:00:12.736 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 18 04:00:12.736 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: method is never used: `reset`
Dec 18 04:00:12.779 INFO [stderr]   --> src/util/hash.rs:25:5
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 25 |     pub fn reset(&mut self) {
Dec 18 04:00:12.779 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: function is never used: `now`
Dec 18 04:00:12.779 INFO [stderr]  --> src/util/time.rs:3:1
Dec 18 04:00:12.779 INFO [stderr]   |
Dec 18 04:00:12.779 INFO [stderr] 3 | pub fn now() -> u64 {
Dec 18 04:00:12.779 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: method is never used: `new`
Dec 18 04:00:12.779 INFO [stderr]   --> src/blockchain/block.rs:26:5
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 26 |     pub fn new() -> Block {
Dec 18 04:00:12.779 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 18 04:00:12.779 INFO [stderr]   --> src/blockchain/block.rs:36:5
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 36 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 18 04:00:12.779 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: method is never used: `set_previous`
Dec 18 04:00:12.779 INFO [stderr]   --> src/blockchain/block.rs:40:5
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 40 |     pub fn set_previous(&mut self, p: &[u8; HASH256_BYTES]) {
Dec 18 04:00:12.779 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: method is never used: `add_transaction`
Dec 18 04:00:12.779 INFO [stderr]   --> src/blockchain/block.rs:48:5
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 48 |     pub fn add_transaction(&mut self, tx: Transaction) {
Dec 18 04:00:12.779 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: method is never used: `new`
Dec 18 04:00:12.779 INFO [stderr]   --> src/blockchain/transaction.rs:58:5
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 58 |     pub fn new() -> Transaction {
Dec 18 04:00:12.779 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 18 04:00:12.779 INFO [stderr]   --> src/blockchain/transaction.rs:67:5
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 67 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 18 04:00:12.779 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: method is never used: `add_output`
Dec 18 04:00:12.779 INFO [stderr]   --> src/blockchain/transaction.rs:71:5
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 71 |     pub fn add_output(&mut self, amount: u64) {
Dec 18 04:00:12.779 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: variant `Merkle_root` should have a camel case name such as `MerkleRoot`
Dec 18 04:00:12.779 INFO [stderr]   --> src/blockchain/block.rs:88:52
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 88 |         enum Field { Version, Timestamp, Previous, Merkle_root };
Dec 18 04:00:12.779 INFO [stderr]    |                                                    ^^^^^^^^^^^
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 18 04:00:12.779 INFO [stderr] 
Dec 18 04:00:12.779 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:00:12.779 INFO [stderr]   --> src/blockchain/chain.rs:83:21
Dec 18 04:00:12.779 INFO [stderr]    |
Dec 18 04:00:12.779 INFO [stderr] 83 |                     writeln!(&mut io::stderr(), "read_chain: {}", e);
Dec 18 04:00:12.780 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.780 INFO [stderr]    |
Dec 18 04:00:12.780 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:00:12.780 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:00:12.780 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 18 04:00:12.780 INFO [stderr] 
Dec 18 04:00:12.780 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:00:12.780 INFO [stderr]   --> src/blockchain/transaction.rs:19:9
Dec 18 04:00:12.780 INFO [stderr]    |
Dec 18 04:00:12.780 INFO [stderr] 19 |         hash.write_all(&self.hash);
Dec 18 04:00:12.780 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.780 INFO [stderr]    |
Dec 18 04:00:12.780 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:00:12.780 INFO [stderr] 
Dec 18 04:00:12.829 INFO [stderr] warning: method is never used: `reset`
Dec 18 04:00:12.829 INFO [stderr]   --> src/util/hash.rs:25:5
Dec 18 04:00:12.829 INFO [stderr]    |
Dec 18 04:00:12.829 INFO [stderr] 25 |     pub fn reset(&mut self) {
Dec 18 04:00:12.829 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.829 INFO [stderr]    |
Dec 18 04:00:12.829 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 04:00:12.829 INFO [stderr] 
Dec 18 04:00:12.830 INFO [stderr] warning: function is never used: `now`
Dec 18 04:00:12.830 INFO [stderr]  --> src/util/time.rs:3:1
Dec 18 04:00:12.830 INFO [stderr]   |
Dec 18 04:00:12.830 INFO [stderr] 3 | pub fn now() -> u64 {
Dec 18 04:00:12.830 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.830 INFO [stderr] 
Dec 18 04:00:12.830 INFO [stderr] warning: method is never used: `new`
Dec 18 04:00:12.830 INFO [stderr]   --> src/blockchain/block.rs:26:5
Dec 18 04:00:12.830 INFO [stderr]    |
Dec 18 04:00:12.830 INFO [stderr] 26 |     pub fn new() -> Block {
Dec 18 04:00:12.830 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.830 INFO [stderr] 
Dec 18 04:00:12.830 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 18 04:00:12.830 INFO [stderr]   --> src/blockchain/block.rs:36:5
Dec 18 04:00:12.830 INFO [stderr]    |
Dec 18 04:00:12.830 INFO [stderr] 36 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 18 04:00:12.830 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.830 INFO [stderr] 
Dec 18 04:00:12.830 INFO [stderr] warning: method is never used: `set_previous`
Dec 18 04:00:12.830 INFO [stderr]   --> src/blockchain/block.rs:40:5
Dec 18 04:00:12.830 INFO [stderr]    |
Dec 18 04:00:12.830 INFO [stderr] 40 |     pub fn set_previous(&mut self, p: &[u8; HASH256_BYTES]) {
Dec 18 04:00:12.830 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.830 INFO [stderr] 
Dec 18 04:00:12.830 INFO [stderr] warning: method is never used: `add_transaction`
Dec 18 04:00:12.830 INFO [stderr]   --> src/blockchain/block.rs:48:5
Dec 18 04:00:12.830 INFO [stderr]    |
Dec 18 04:00:12.830 INFO [stderr] 48 |     pub fn add_transaction(&mut self, tx: Transaction) {
Dec 18 04:00:12.830 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.830 INFO [stderr] 
Dec 18 04:00:12.830 INFO [stderr] warning: method is never used: `new`
Dec 18 04:00:12.830 INFO [stderr]   --> src/blockchain/transaction.rs:58:5
Dec 18 04:00:12.830 INFO [stderr]    |
Dec 18 04:00:12.830 INFO [stderr] 58 |     pub fn new() -> Transaction {
Dec 18 04:00:12.830 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.830 INFO [stderr] 
Dec 18 04:00:12.830 INFO [stderr] warning: method is never used: `set_timestamp`
Dec 18 04:00:12.830 INFO [stderr]   --> src/blockchain/transaction.rs:67:5
Dec 18 04:00:12.830 INFO [stderr]    |
Dec 18 04:00:12.830 INFO [stderr] 67 |     pub fn set_timestamp(&mut self, ts: u64) {
Dec 18 04:00:12.830 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.830 INFO [stderr] 
Dec 18 04:00:12.830 INFO [stderr] warning: method is never used: `add_output`
Dec 18 04:00:12.830 INFO [stderr]   --> src/blockchain/transaction.rs:71:5
Dec 18 04:00:12.830 INFO [stderr]    |
Dec 18 04:00:12.830 INFO [stderr] 71 |     pub fn add_output(&mut self, amount: u64) {
Dec 18 04:00:12.830 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.830 INFO [stderr] 
Dec 18 04:00:12.831 INFO [stderr] warning: variant `Merkle_root` should have a camel case name such as `MerkleRoot`
Dec 18 04:00:12.831 INFO [stderr]   --> src/blockchain/block.rs:88:52
Dec 18 04:00:12.831 INFO [stderr]    |
Dec 18 04:00:12.831 INFO [stderr] 88 |         enum Field { Version, Timestamp, Previous, Merkle_root };
Dec 18 04:00:12.831 INFO [stderr]    |                                                    ^^^^^^^^^^^
Dec 18 04:00:12.831 INFO [stderr]    |
Dec 18 04:00:12.831 INFO [stderr]    = note: #[warn(non_camel_case_types)] on by default
Dec 18 04:00:12.831 INFO [stderr] 
Dec 18 04:00:12.832 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:00:12.832 INFO [stderr]   --> src/blockchain/chain.rs:83:21
Dec 18 04:00:12.832 INFO [stderr]    |
Dec 18 04:00:12.832 INFO [stderr] 83 |                     writeln!(&mut io::stderr(), "read_chain: {}", e);
Dec 18 04:00:12.832 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.832 INFO [stderr]    |
Dec 18 04:00:12.832 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:00:12.832 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:00:12.832 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 18 04:00:12.832 INFO [stderr] 
Dec 18 04:00:12.832 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:00:12.833 INFO [stderr]   --> src/blockchain/transaction.rs:19:9
Dec 18 04:00:12.833 INFO [stderr]    |
Dec 18 04:00:12.833 INFO [stderr] 19 |         hash.write_all(&self.hash);
Dec 18 04:00:12.833 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:00:12.833 INFO [stderr]    |
Dec 18 04:00:12.833 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:00:12.833 INFO [stderr] 
Dec 18 04:00:12.855 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
Dec 18 04:00:13.091 INFO running `"docker" "inspect" "c8f157e26b80f968a2ac39985b8cf01bccbc87c8f4c2239dc77b8b3fe58b8506"`
Dec 18 04:00:13.168 INFO running `"docker" "rm" "-f" "c8f157e26b80f968a2ac39985b8cf01bccbc87c8f4c2239dc77b8b3fe58b8506"`
Dec 18 04:00:13.260 INFO [stdout] c8f157e26b80f968a2ac39985b8cf01bccbc87c8f4c2239dc77b8b3fe58b8506