Dec 15 15:34:41.072 INFO testing ethereum-trie-0.4.0 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 15 15:34:41.072 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 15 15:34:41.489 INFO [stdout] c380c902c1c7914fedc8450a5eb46b55e1c459f0b039e69f85b069bd50e590c9
Dec 15 15:34:41.495 INFO running `"docker" "start" "-a" "c380c902c1c7914fedc8450a5eb46b55e1c459f0b039e69f85b069bd50e590c9"`
Dec 15 15:34:42.168 INFO [stderr] usermod: no changes
Dec 15 15:34:42.218 INFO [stderr]    Compiling ethereum-hexutil v0.2.3
Dec 15 15:34:42.218 INFO [stderr]    Compiling sha3 v0.6.0
Dec 15 15:34:42.893 INFO [stderr]    Compiling ethereum-rlp v0.2.3
Dec 15 15:34:44.775 INFO [stderr]    Compiling ethereum-bigint v0.2.9
Dec 15 15:34:47.993 INFO [stderr]    Compiling ethereum-trie v0.4.0 (/source)
Dec 15 15:34:49.437 INFO [stderr] warning: unused imports: `NibbleSlice`, `NibbleVec`, `Nibble`
Dec 15 15:34:49.437 INFO [stderr]   --> src/lib.rs:13:28
Dec 15 15:34:49.437 INFO [stderr]    |
Dec 15 15:34:49.437 INFO [stderr] 13 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:49.437 INFO [stderr]    |                            ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^
Dec 15 15:34:49.437 INFO [stderr]    |
Dec 15 15:34:49.437 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 15 15:34:49.437 INFO [stderr] 
Dec 15 15:34:49.437 INFO [stderr] warning: unused imports: `Decodable`, `Encodable`, `Prototype`
Dec 15 15:34:49.437 INFO [stderr]  --> src/merkle/nibble.rs:3:22
Dec 15 15:34:49.437 INFO [stderr]   |
Dec 15 15:34:49.437 INFO [stderr] 3 | use rlp::{RlpStream, Encodable, Decodable, Rlp, Prototype};
Dec 15 15:34:49.437 INFO [stderr]   |                      ^^^^^^^^^  ^^^^^^^^^       ^^^^^^^^^
Dec 15 15:34:49.437 INFO [stderr] 
Dec 15 15:34:49.437 INFO [stderr] warning: unused import: `std::ops::Deref`
Dec 15 15:34:49.437 INFO [stderr]  --> src/merkle/nibble.rs:4:5
Dec 15 15:34:49.437 INFO [stderr]   |
Dec 15 15:34:49.437 INFO [stderr] 4 | use std::ops::Deref;
Dec 15 15:34:49.437 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 15 15:34:49.437 INFO [stderr] 
Dec 15 15:34:49.437 INFO [stderr] warning: unused import: `Hash`
Dec 15 15:34:49.437 INFO [stderr]  --> src/merkle/nibble.rs:6:17
Dec 15 15:34:49.437 INFO [stderr]   |
Dec 15 15:34:49.437 INFO [stderr] 6 | use std::hash::{Hash, Hasher};
Dec 15 15:34:49.437 INFO [stderr]   |                 ^^^^
Dec 15 15:34:49.437 INFO [stderr] 
Dec 15 15:34:49.437 INFO [stderr] warning: unused imports: `Debug`, `Formatter`, `self`
Dec 15 15:34:49.437 INFO [stderr]  --> src/merkle/nibble.rs:7:16
Dec 15 15:34:49.437 INFO [stderr]   |
Dec 15 15:34:49.437 INFO [stderr] 7 | use std::fmt::{self, Debug, Formatter};
Dec 15 15:34:49.437 INFO [stderr]   |                ^^^^  ^^^^^  ^^^^^^^^^
Dec 15 15:34:49.437 INFO [stderr] 
Dec 15 15:34:49.437 INFO [stderr] warning: unused imports: `NibbleSlice`, `Nibble`
Dec 15 15:34:49.437 INFO [stderr]  --> src/merkle/node.rs:1:27
Dec 15 15:34:49.437 INFO [stderr]   |
Dec 15 15:34:49.437 INFO [stderr] 1 | use super::nibble::{self, Nibble, NibbleVec, NibbleSlice, NibbleType};
Dec 15 15:34:49.437 INFO [stderr]   |                           ^^^^^^             ^^^^^^^^^^^
Dec 15 15:34:49.437 INFO [stderr] 
Dec 15 15:34:49.437 INFO [stderr] warning: unused imports: `NibbleSlice`, `NibbleType`, `NibbleVec`, `Nibble`
Dec 15 15:34:49.437 INFO [stderr]  --> src/merkle/mod.rs:6:20
Dec 15 15:34:49.437 INFO [stderr]   |
Dec 15 15:34:49.437 INFO [stderr] 6 | use self::nibble::{Nibble, NibbleVec, NibbleSlice, NibbleType};
Dec 15 15:34:49.437 INFO [stderr]   |                    ^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^
Dec 15 15:34:49.437 INFO [stderr] 
Dec 15 15:34:49.438 INFO [stderr] warning: unused imports: `NibbleSlice`, `Nibble`
Dec 15 15:34:49.438 INFO [stderr]  --> src/ops/insert.rs:2:39
Dec 15 15:34:49.438 INFO [stderr]   |
Dec 15 15:34:49.438 INFO [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:49.438 INFO [stderr]   |                                       ^^^^^^^^^^^  ^^^^^^
Dec 15 15:34:49.438 INFO [stderr] 
Dec 15 15:34:49.438 INFO [stderr] warning: unused import: `self`
Dec 15 15:34:49.438 INFO [stderr]  --> src/ops/insert.rs:5:11
Dec 15 15:34:49.438 INFO [stderr]   |
Dec 15 15:34:49.438 INFO [stderr] 5 | use rlp::{self, Rlp};
Dec 15 15:34:49.438 INFO [stderr]   |           ^^^^
Dec 15 15:34:49.438 INFO [stderr] 
Dec 15 15:34:49.438 INFO [stderr] warning: unused imports: `NibbleSlice`, `self`
Dec 15 15:34:49.438 INFO [stderr]  --> src/ops/delete.rs:2:22
Dec 15 15:34:49.438 INFO [stderr]   |
Dec 15 15:34:49.438 INFO [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:49.438 INFO [stderr]   |                      ^^^^             ^^^^^^^^^^^
Dec 15 15:34:49.438 INFO [stderr] 
Dec 15 15:34:49.438 INFO [stderr] warning: unused import: `self`
Dec 15 15:34:49.438 INFO [stderr]  --> src/ops/delete.rs:5:11
Dec 15 15:34:49.438 INFO [stderr]   |
Dec 15 15:34:49.438 INFO [stderr] 5 | use rlp::{self, Rlp};
Dec 15 15:34:49.438 INFO [stderr]   |           ^^^^
Dec 15 15:34:49.438 INFO [stderr] 
Dec 15 15:34:49.438 INFO [stderr] warning: unused import: `NibbleSlice`
Dec 15 15:34:49.438 INFO [stderr]  --> src/ops/build.rs:2:39
Dec 15 15:34:49.438 INFO [stderr]   |
Dec 15 15:34:49.438 INFO [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:49.438 INFO [stderr]   |                                       ^^^^^^^^^^^
Dec 15 15:34:49.438 INFO [stderr] 
Dec 15 15:34:49.438 INFO [stderr] warning: unused imports: `Rlp`, `self`
Dec 15 15:34:49.438 INFO [stderr]  --> src/ops/build.rs:7:11
Dec 15 15:34:49.438 INFO [stderr]   |
Dec 15 15:34:49.438 INFO [stderr] 7 | use rlp::{self, Rlp};
Dec 15 15:34:49.438 INFO [stderr]   |           ^^^^  ^^^
Dec 15 15:34:49.438 INFO [stderr] 
Dec 15 15:34:49.438 INFO [stderr] warning: unused imports: `NibbleSlice`, `Nibble`, `self`
Dec 15 15:34:49.438 INFO [stderr]  --> src/ops/get.rs:2:22
Dec 15 15:34:49.438 INFO [stderr]   |
Dec 15 15:34:49.443 INFO [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:49.443 INFO [stderr]   |                      ^^^^             ^^^^^^^^^^^  ^^^^^^
Dec 15 15:34:49.443 INFO [stderr] 
Dec 15 15:34:49.443 INFO [stderr] warning: unused import: `Change`
Dec 15 15:34:49.443 INFO [stderr]  --> src/ops/get.rs:3:6
Dec 15 15:34:49.443 INFO [stderr]   |
Dec 15 15:34:49.443 INFO [stderr] 3 | use {Change, DatabaseHandle};
Dec 15 15:34:49.443 INFO [stderr]   |      ^^^^^^
Dec 15 15:34:49.443 INFO [stderr] 
Dec 15 15:34:49.443 INFO [stderr] warning: unused import: `self`
Dec 15 15:34:49.443 INFO [stderr]  --> src/ops/get.rs:5:11
Dec 15 15:34:49.443 INFO [stderr]   |
Dec 15 15:34:49.443 INFO [stderr] 5 | use rlp::{self, Rlp};
Dec 15 15:34:49.443 INFO [stderr]   |           ^^^^
Dec 15 15:34:49.443 INFO [stderr] 
Dec 15 15:34:49.443 INFO [stderr] warning: unused import: `Rlp`
Dec 15 15:34:49.443 INFO [stderr]  --> src/mutable.rs:2:17
Dec 15 15:34:49.443 INFO [stderr]   |
Dec 15 15:34:49.443 INFO [stderr] 2 | use rlp::{self, Rlp};
Dec 15 15:34:49.443 INFO [stderr]   |                 ^^^
Dec 15 15:34:49.443 INFO [stderr] 
Dec 15 15:34:49.719 INFO [stderr] warning: unused import: `Hasher`
Dec 15 15:34:49.719 INFO [stderr]  --> src/merkle/nibble.rs:6:23
Dec 15 15:34:49.719 INFO [stderr]   |
Dec 15 15:34:49.719 INFO [stderr] 6 | use std::hash::{Hash, Hasher};
Dec 15 15:34:49.719 INFO [stderr]   |                       ^^^^^^
Dec 15 15:34:49.719 INFO [stderr] 
Dec 15 15:34:49.719 INFO [stderr] warning: unused import: `Decodable`
Dec 15 15:34:49.719 INFO [stderr]  --> src/merkle/node.rs:3:39
Dec 15 15:34:49.719 INFO [stderr]   |
Dec 15 15:34:49.719 INFO [stderr] 3 | use rlp::{self, RlpStream, Encodable, Decodable, Rlp, Prototype};
Dec 15 15:34:49.719 INFO [stderr]   |                                       ^^^^^^^^^
Dec 15 15:34:49.719 INFO [stderr] 
Dec 15 15:34:49.719 INFO [stderr] warning: unused import: `DatabaseHandle`
Dec 15 15:34:49.719 INFO [stderr]  --> src/ops/build.rs:3:14
Dec 15 15:34:49.719 INFO [stderr]   |
Dec 15 15:34:49.719 INFO [stderr] 3 | use {Change, DatabaseHandle};
Dec 15 15:34:49.719 INFO [stderr]   |              ^^^^^^^^^^^^^^
Dec 15 15:34:49.719 INFO [stderr] 
Dec 15 15:34:50.743 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.58s
Dec 15 15:34:50.746 INFO [stderr] su: No module specific data is present
Dec 15 15:34:51.083 INFO running `"docker" "inspect" "c380c902c1c7914fedc8450a5eb46b55e1c459f0b039e69f85b069bd50e590c9"`
Dec 15 15:34:51.144 INFO running `"docker" "rm" "-f" "c380c902c1c7914fedc8450a5eb46b55e1c459f0b039e69f85b069bd50e590c9"`
Dec 15 15:34:51.231 INFO [stdout] c380c902c1c7914fedc8450a5eb46b55e1c459f0b039e69f85b069bd50e590c9
Dec 15 15:34:51.232 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 15 15:34:51.389 INFO [stdout] fe5af678f1524b7211cebc0beacd16441e78bdaeedd0e9ccaa38517fa379e452
Dec 15 15:34:51.391 INFO running `"docker" "start" "-a" "fe5af678f1524b7211cebc0beacd16441e78bdaeedd0e9ccaa38517fa379e452"`
Dec 15 15:34:52.035 INFO [stderr] usermod: no changes
Dec 15 15:34:52.123 INFO [stderr]    Compiling ethereum-trie v0.4.0 (/source)
Dec 15 15:34:53.767 INFO [stderr] warning: unused imports: `NibbleSlice`, `NibbleVec`, `Nibble`
Dec 15 15:34:53.767 INFO [stderr]   --> src/lib.rs:13:28
Dec 15 15:34:53.767 INFO [stderr]    |
Dec 15 15:34:53.767 INFO [stderr] 13 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:53.767 INFO [stderr]    |                            ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^
Dec 15 15:34:53.767 INFO [stderr]    |
Dec 15 15:34:53.767 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused imports: `Decodable`, `Encodable`, `Prototype`
Dec 15 15:34:53.767 INFO [stderr]  --> src/merkle/nibble.rs:3:22
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 3 | use rlp::{RlpStream, Encodable, Decodable, Rlp, Prototype};
Dec 15 15:34:53.767 INFO [stderr]   |                      ^^^^^^^^^  ^^^^^^^^^       ^^^^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused import: `std::ops::Deref`
Dec 15 15:34:53.767 INFO [stderr]  --> src/merkle/nibble.rs:4:5
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 4 | use std::ops::Deref;
Dec 15 15:34:53.767 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused import: `Hash`
Dec 15 15:34:53.767 INFO [stderr]  --> src/merkle/nibble.rs:6:17
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 6 | use std::hash::{Hash, Hasher};
Dec 15 15:34:53.767 INFO [stderr]   |                 ^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused imports: `Debug`, `Formatter`, `self`
Dec 15 15:34:53.767 INFO [stderr]  --> src/merkle/nibble.rs:7:16
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 7 | use std::fmt::{self, Debug, Formatter};
Dec 15 15:34:53.767 INFO [stderr]   |                ^^^^  ^^^^^  ^^^^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused imports: `NibbleSlice`, `Nibble`
Dec 15 15:34:53.767 INFO [stderr]  --> src/merkle/node.rs:1:27
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 1 | use super::nibble::{self, Nibble, NibbleVec, NibbleSlice, NibbleType};
Dec 15 15:34:53.767 INFO [stderr]   |                           ^^^^^^             ^^^^^^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused import: `Keccak256`
Dec 15 15:34:53.767 INFO [stderr]    --> src/merkle/node.rs:162:24
Dec 15 15:34:53.767 INFO [stderr]     |
Dec 15 15:34:53.767 INFO [stderr] 162 |     use sha3::{Digest, Keccak256};
Dec 15 15:34:53.767 INFO [stderr]     |                        ^^^^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused imports: `NibbleSlice`, `NibbleVec`, `Nibble`
Dec 15 15:34:53.767 INFO [stderr]    --> src/merkle/node.rs:163:32
Dec 15 15:34:53.767 INFO [stderr]     |
Dec 15 15:34:53.767 INFO [stderr] 163 |     use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:53.767 INFO [stderr]     |                                ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused imports: `NibbleSlice`, `NibbleType`, `NibbleVec`, `Nibble`
Dec 15 15:34:53.767 INFO [stderr]  --> src/merkle/mod.rs:6:20
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 6 | use self::nibble::{Nibble, NibbleVec, NibbleSlice, NibbleType};
Dec 15 15:34:53.767 INFO [stderr]   |                    ^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused imports: `NibbleSlice`, `Nibble`
Dec 15 15:34:53.767 INFO [stderr]  --> src/ops/insert.rs:2:39
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:53.767 INFO [stderr]   |                                       ^^^^^^^^^^^  ^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused import: `self`
Dec 15 15:34:53.767 INFO [stderr]  --> src/ops/insert.rs:5:11
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 5 | use rlp::{self, Rlp};
Dec 15 15:34:53.767 INFO [stderr]   |           ^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused imports: `NibbleSlice`, `self`
Dec 15 15:34:53.767 INFO [stderr]  --> src/ops/delete.rs:2:22
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:53.767 INFO [stderr]   |                      ^^^^             ^^^^^^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused import: `self`
Dec 15 15:34:53.767 INFO [stderr]  --> src/ops/delete.rs:5:11
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 5 | use rlp::{self, Rlp};
Dec 15 15:34:53.767 INFO [stderr]   |           ^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.767 INFO [stderr] warning: unused import: `NibbleSlice`
Dec 15 15:34:53.767 INFO [stderr]  --> src/ops/build.rs:2:39
Dec 15 15:34:53.767 INFO [stderr]   |
Dec 15 15:34:53.767 INFO [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:53.767 INFO [stderr]   |                                       ^^^^^^^^^^^
Dec 15 15:34:53.767 INFO [stderr] 
Dec 15 15:34:53.768 INFO [stderr] warning: unused imports: `Rlp`, `self`
Dec 15 15:34:53.768 INFO [stderr]  --> src/ops/build.rs:7:11
Dec 15 15:34:53.768 INFO [stderr]   |
Dec 15 15:34:53.768 INFO [stderr] 7 | use rlp::{self, Rlp};
Dec 15 15:34:53.768 INFO [stderr]   |           ^^^^  ^^^
Dec 15 15:34:53.768 INFO [stderr] 
Dec 15 15:34:53.768 INFO [stderr] warning: unused imports: `NibbleSlice`, `Nibble`, `self`
Dec 15 15:34:53.768 INFO [stderr]  --> src/ops/get.rs:2:22
Dec 15 15:34:53.768 INFO [stderr]   |
Dec 15 15:34:53.768 INFO [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
Dec 15 15:34:53.768 INFO [stderr]   |                      ^^^^             ^^^^^^^^^^^  ^^^^^^
Dec 15 15:34:53.768 INFO [stderr] 
Dec 15 15:34:53.768 INFO [stderr] warning: unused import: `Change`
Dec 15 15:34:53.768 INFO [stderr]  --> src/ops/get.rs:3:6
Dec 15 15:34:53.768 INFO [stderr]   |
Dec 15 15:34:53.768 INFO [stderr] 3 | use {Change, DatabaseHandle};
Dec 15 15:34:53.768 INFO [stderr]   |      ^^^^^^
Dec 15 15:34:53.768 INFO [stderr] 
Dec 15 15:34:53.768 INFO [stderr] warning: unused import: `self`
Dec 15 15:34:53.768 INFO [stderr]  --> src/ops/get.rs:5:11
Dec 15 15:34:53.768 INFO [stderr]   |
Dec 15 15:34:53.768 INFO [stderr] 5 | use rlp::{self, Rlp};
Dec 15 15:34:53.768 INFO [stderr]   |           ^^^^
Dec 15 15:34:53.768 INFO [stderr] 
Dec 15 15:34:53.768 INFO [stderr] warning: unused import: `merkle::MerkleNode`
Dec 15 15:34:53.768 INFO [stderr]    --> src/memory.rs:102:9
Dec 15 15:34:53.768 INFO [stderr]     |
Dec 15 15:34:53.768 INFO [stderr] 102 |     use merkle::MerkleNode;
Dec 15 15:34:53.768 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^
Dec 15 15:34:53.768 INFO [stderr] 
Dec 15 15:34:53.768 INFO [stderr] warning: unused import: `rlp::Rlp`
Dec 15 15:34:53.768 INFO [stderr]    --> src/memory.rs:103:9
Dec 15 15:34:53.768 INFO [stderr]     |
Dec 15 15:34:53.768 INFO [stderr] 103 |     use rlp::Rlp;
Dec 15 15:34:53.768 INFO [stderr]     |         ^^^^^^^^
Dec 15 15:34:53.768 INFO [stderr] 
Dec 15 15:34:53.768 INFO [stderr] warning: unused import: `std::cell::UnsafeCell`
Dec 15 15:34:53.768 INFO [stderr]    --> src/memory.rs:107:9
Dec 15 15:34:53.768 INFO [stderr]     |
Dec 15 15:34:53.768 INFO [stderr] 107 |     use std::cell::UnsafeCell;
Dec 15 15:34:53.768 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 15 15:34:53.768 INFO [stderr] 
Dec 15 15:34:53.768 INFO [stderr] warning: unused import: `hexutil::read_hex`
Dec 15 15:34:53.768 INFO [stderr]    --> src/memory.rs:109:9
Dec 15 15:34:53.768 INFO [stderr]     |
Dec 15 15:34:53.768 INFO [stderr] 109 |     use hexutil::read_hex;
Dec 15 15:34:53.768 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^
Dec 15 15:34:53.768 INFO [stderr] 
Dec 15 15:34:53.768 INFO [stderr] warning: unused import: `Rlp`
Dec 15 15:34:53.768 INFO [stderr]  --> src/mutable.rs:2:17
Dec 15 15:34:53.768 INFO [stderr]   |
Dec 15 15:34:53.768 INFO [stderr] 2 | use rlp::{self, Rlp};
Dec 15 15:34:53.768 INFO [stderr]   |                 ^^^
Dec 15 15:34:53.768 INFO [stderr] 
Dec 15 15:34:54.031 INFO [stderr] warning: unused import: `Hasher`
Dec 15 15:34:54.031 INFO [stderr]  --> src/merkle/nibble.rs:6:23
Dec 15 15:34:54.031 INFO [stderr]   |
Dec 15 15:34:54.031 INFO [stderr] 6 | use std::hash::{Hash, Hasher};
Dec 15 15:34:54.031 INFO [stderr]   |                       ^^^^^^
Dec 15 15:34:54.031 INFO [stderr] 
Dec 15 15:34:54.031 INFO [stderr] warning: unused import: `Decodable`
Dec 15 15:34:54.031 INFO [stderr]  --> src/merkle/node.rs:3:39
Dec 15 15:34:54.031 INFO [stderr]   |
Dec 15 15:34:54.031 INFO [stderr] 3 | use rlp::{self, RlpStream, Encodable, Decodable, Rlp, Prototype};
Dec 15 15:34:54.031 INFO [stderr]   |                                       ^^^^^^^^^
Dec 15 15:34:54.031 INFO [stderr] 
Dec 15 15:34:54.031 INFO [stderr] warning: unused import: `Digest`
Dec 15 15:34:54.031 INFO [stderr]    --> src/merkle/node.rs:162:16
Dec 15 15:34:54.031 INFO [stderr]     |
Dec 15 15:34:54.031 INFO [stderr] 162 |     use sha3::{Digest, Keccak256};
Dec 15 15:34:54.031 INFO [stderr]     |                ^^^^^^
Dec 15 15:34:54.031 INFO [stderr] 
Dec 15 15:34:54.031 INFO [stderr] warning: unused import: `DatabaseHandle`
Dec 15 15:34:54.031 INFO [stderr]  --> src/ops/build.rs:3:14
Dec 15 15:34:54.031 INFO [stderr]   |
Dec 15 15:34:54.031 INFO [stderr] 3 | use {Change, DatabaseHandle};
Dec 15 15:34:54.031 INFO [stderr]   |              ^^^^^^^^^^^^^^
Dec 15 15:34:54.031 INFO [stderr] 
Dec 15 15:34:54.063 INFO [stderr] warning: unused variable: `value`
Dec 15 15:34:54.063 INFO [stderr]    --> src/memory.rs:139:19
Dec 15 15:34:54.063 INFO [stderr]     |
Dec 15 15:34:54.063 INFO [stderr] 139 |         for (key, value) in &map {
Dec 15 15:34:54.063 INFO [stderr]     |                   ^^^^^ help: consider using `_value` instead
Dec 15 15:34:54.063 INFO [stderr]     |
Dec 15 15:34:54.063 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 15 15:34:54.063 INFO [stderr] 
Dec 15 15:34:54.163 INFO [stderr] warning: variable does not need to be mutable
Dec 15 15:34:54.163 INFO [stderr]    --> src/memory.rs:121:13
Dec 15 15:34:54.163 INFO [stderr]     |
Dec 15 15:34:54.163 INFO [stderr] 121 |         let mut btrie = MemoryTrieMut::build(&map);
Dec 15 15:34:54.163 INFO [stderr]     |             ----^^^^^
Dec 15 15:34:54.163 INFO [stderr]     |             |
Dec 15 15:34:54.163 INFO [stderr]     |             help: remove this `mut`
Dec 15 15:34:54.163 INFO [stderr]     |
Dec 15 15:34:54.163 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 15 15:34:54.163 INFO [stderr] 
Dec 15 15:34:55.863 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.80s
Dec 15 15:34:55.863 INFO [stderr] su: No module specific data is present
Dec 15 15:34:56.519 INFO running `"docker" "inspect" "fe5af678f1524b7211cebc0beacd16441e78bdaeedd0e9ccaa38517fa379e452"`
Dec 15 15:34:56.847 INFO running `"docker" "rm" "-f" "fe5af678f1524b7211cebc0beacd16441e78bdaeedd0e9ccaa38517fa379e452"`
Dec 15 15:34:57.107 INFO [stdout] fe5af678f1524b7211cebc0beacd16441e78bdaeedd0e9ccaa38517fa379e452
Dec 15 15:34:57.114 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 15 15:34:57.526 INFO [stdout] a1a4aae2085c9ec93db18832253e4c8b236206aad63e7013301a33425903d0d7
Dec 15 15:34:57.528 INFO running `"docker" "start" "-a" "a1a4aae2085c9ec93db18832253e4c8b236206aad63e7013301a33425903d0d7"`
Dec 15 15:34:59.022 INFO [stderr] usermod: no changes
Dec 15 15:34:59.107 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 15 15:34:59.130 INFO [stderr]      Running /target/debug/deps/trie-fcd3c42b701865b4
Dec 15 15:34:59.134 INFO [stdout] 
Dec 15 15:34:59.135 INFO [stdout] running 5 tests
Dec 15 15:34:59.135 INFO [stdout] test merkle::node::tests::encode_decode ... ok
Dec 15 15:34:59.139 INFO [stdout] test merkle::node::tests::decode_genesis_state ... ok
Dec 15 15:34:59.151 INFO [stdout] test memory::tests::trie_two_keys ... ok
Dec 15 15:34:59.151 INFO [stdout] test merkle::nibble::tests::from_into_key ... ok
Dec 15 15:34:59.151 INFO [stderr]    Doc-tests trie
Dec 15 15:34:59.151 INFO [stdout] test memory::tests::trie_middle_leaf ... ok
Dec 15 15:34:59.151 INFO [stdout] 
Dec 15 15:34:59.151 INFO [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 15 15:34:59.151 INFO [stdout] 
Dec 15 15:35:02.163 INFO [stdout] 
Dec 15 15:35:02.163 INFO [stdout] running 0 tests
Dec 15 15:35:02.163 INFO [stdout] 
Dec 15 15:35:02.163 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 15 15:35:02.163 INFO [stdout] 
Dec 15 15:35:02.175 INFO [stderr] su: No module specific data is present
Dec 15 15:35:03.004 INFO running `"docker" "inspect" "a1a4aae2085c9ec93db18832253e4c8b236206aad63e7013301a33425903d0d7"`
Dec 15 15:35:03.307 INFO running `"docker" "rm" "-f" "a1a4aae2085c9ec93db18832253e4c8b236206aad63e7013301a33425903d0d7"`
Dec 15 15:35:03.582 INFO [stdout] a1a4aae2085c9ec93db18832253e4c8b236206aad63e7013301a33425903d0d7