[INFO] fetching crate etcommon-trie 0.4.0...
[INFO] testing etcommon-trie-0.4.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate etcommon-trie 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate etcommon-trie 0.4.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate etcommon-trie 0.4.0
[INFO] finished tweaking crates.io crate etcommon-trie 0.4.0
[INFO] tweaked toml for crates.io crate etcommon-trie 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4476834fbf97f9705f42682b3de8a98a076da01239967042dfca7532a894874a
[INFO] running `Command { std: "docker" "start" "-a" "4476834fbf97f9705f42682b3de8a98a076da01239967042dfca7532a894874a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4476834fbf97f9705f42682b3de8a98a076da01239967042dfca7532a894874a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4476834fbf97f9705f42682b3de8a98a076da01239967042dfca7532a894874a", kill_on_drop: false }`
[INFO] [stdout] 4476834fbf97f9705f42682b3de8a98a076da01239967042dfca7532a894874a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d54e54fc85d4ae009ba2cef047504bbf6bc9350cc45d0b8be60fd9062f909bb
[INFO] running `Command { std: "docker" "start" "-a" "8d54e54fc85d4ae009ba2cef047504bbf6bc9350cc45d0b8be60fd9062f909bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling elastic-array-plus v0.10.0
[INFO] [stderr]    Compiling etcommon-hexutil v0.2.4
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling etcommon-rlp v0.2.5
[INFO] [stderr]    Compiling etcommon-bigint v0.2.10
[INFO] [stderr]    Compiling etcommon-trie v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `NibbleVec`, `Nibble`
[INFO] [stdout]   --> src/lib.rs:13:28
[INFO] [stdout]    |
[INFO] [stdout] 13 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]    |                            ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Decodable`, `Encodable`, `Prototype`
[INFO] [stdout]  --> src/merkle/nibble.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::{RlpStream, Encodable, Decodable, Rlp, Prototype};
[INFO] [stdout]   |                      ^^^^^^^^^  ^^^^^^^^^       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/merkle/nibble.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Formatter`, `self`
[INFO] [stdout]  --> src/merkle/nibble.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt::{self, Debug, Formatter};
[INFO] [stdout]   |                ^^^^         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `Nibble`
[INFO] [stdout]  --> src/merkle/node.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::nibble::{self, Nibble, NibbleVec, NibbleSlice, NibbleType};
[INFO] [stdout]   |                           ^^^^^^             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `NibbleType`, `NibbleVec`, `Nibble`
[INFO] [stdout]  --> src/merkle/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use self::nibble::{Nibble, NibbleVec, NibbleSlice, NibbleType};
[INFO] [stdout]   |                    ^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `Nibble`
[INFO] [stdout]  --> src/ops/insert.rs:2:39
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                                       ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ops/insert.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `self`
[INFO] [stdout]  --> src/ops/delete.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                      ^^^^             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ops/delete.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NibbleSlice`
[INFO] [stdout]  --> src/ops/build.rs:2:39
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rlp`, `self`
[INFO] [stdout]  --> src/ops/build.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `Nibble`, `self`
[INFO] [stdout]  --> src/ops/get.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                      ^^^^             ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Change`
[INFO] [stdout]  --> src/ops/get.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | use {Change, DatabaseHandle};
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ops/get.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rlp`
[INFO] [stdout]  --> src/mutable.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rlp::{self, Rlp};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]  --> src/merkle/nibble.rs:6:23
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Decodable`
[INFO] [stdout]  --> src/merkle/node.rs:3:39
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::{self, RlpStream, Encodable, Decodable, Rlp, Prototype};
[INFO] [stdout]   |                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DatabaseHandle`
[INFO] [stdout]  --> src/ops/build.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use {Change, DatabaseHandle};
[INFO] [stdout]   |              ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.14s
[INFO] running `Command { std: "docker" "inspect" "8d54e54fc85d4ae009ba2cef047504bbf6bc9350cc45d0b8be60fd9062f909bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d54e54fc85d4ae009ba2cef047504bbf6bc9350cc45d0b8be60fd9062f909bb", kill_on_drop: false }`
[INFO] [stdout] 8d54e54fc85d4ae009ba2cef047504bbf6bc9350cc45d0b8be60fd9062f909bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 855cf0a24f16bfc001d32519c1972769af864d744910b63511fb2bd9fb6e0069
[INFO] running `Command { std: "docker" "start" "-a" "855cf0a24f16bfc001d32519c1972769af864d744910b63511fb2bd9fb6e0069", kill_on_drop: false }`
[INFO] [stderr]    Compiling etcommon-trie v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `NibbleVec`, `Nibble`
[INFO] [stdout]   --> src/lib.rs:13:28
[INFO] [stdout]    |
[INFO] [stdout] 13 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]    |                            ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Decodable`, `Encodable`, `Prototype`
[INFO] [stdout]  --> src/merkle/nibble.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::{RlpStream, Encodable, Decodable, Rlp, Prototype};
[INFO] [stdout]   |                      ^^^^^^^^^  ^^^^^^^^^       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/merkle/nibble.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Formatter`, `self`
[INFO] [stdout]  --> src/merkle/nibble.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt::{self, Debug, Formatter};
[INFO] [stdout]   |                ^^^^         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `Nibble`
[INFO] [stdout]  --> src/merkle/node.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::nibble::{self, Nibble, NibbleVec, NibbleSlice, NibbleType};
[INFO] [stdout]   |                           ^^^^^^             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `NibbleType`, `NibbleVec`, `Nibble`
[INFO] [stdout]  --> src/merkle/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use self::nibble::{Nibble, NibbleVec, NibbleSlice, NibbleType};
[INFO] [stdout]   |                    ^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `Nibble`
[INFO] [stdout]  --> src/ops/insert.rs:2:39
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                                       ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ops/insert.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `self`
[INFO] [stdout]  --> src/ops/delete.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                      ^^^^             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ops/delete.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NibbleSlice`
[INFO] [stdout]  --> src/ops/build.rs:2:39
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rlp`, `self`
[INFO] [stdout]  --> src/ops/build.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `Nibble`, `self`
[INFO] [stdout]  --> src/ops/get.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                      ^^^^             ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Change`
[INFO] [stdout]  --> src/ops/get.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | use {Change, DatabaseHandle};
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ops/get.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rlp`
[INFO] [stdout]  --> src/mutable.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rlp::{self, Rlp};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]  --> src/merkle/nibble.rs:6:23
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Decodable`
[INFO] [stdout]  --> src/merkle/node.rs:3:39
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::{self, RlpStream, Encodable, Decodable, Rlp, Prototype};
[INFO] [stdout]   |                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DatabaseHandle`
[INFO] [stdout]  --> src/ops/build.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use {Change, DatabaseHandle};
[INFO] [stdout]   |              ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `NibbleVec`, `Nibble`
[INFO] [stdout]   --> src/lib.rs:13:28
[INFO] [stdout]    |
[INFO] [stdout] 13 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]    |                            ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Decodable`, `Encodable`, `Prototype`
[INFO] [stdout]  --> src/merkle/nibble.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::{RlpStream, Encodable, Decodable, Rlp, Prototype};
[INFO] [stdout]   |                      ^^^^^^^^^  ^^^^^^^^^       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/merkle/nibble.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Formatter`, `self`
[INFO] [stdout]  --> src/merkle/nibble.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fmt::{self, Debug, Formatter};
[INFO] [stdout]   |                ^^^^         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `Nibble`
[INFO] [stdout]  --> src/merkle/node.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::nibble::{self, Nibble, NibbleVec, NibbleSlice, NibbleType};
[INFO] [stdout]   |                           ^^^^^^             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Keccak256`
[INFO] [stdout]    --> src/merkle/node.rs:162:24
[INFO] [stdout]     |
[INFO] [stdout] 162 |     use sha3::{Digest, Keccak256};
[INFO] [stdout]     |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `NibbleVec`, `Nibble`
[INFO] [stdout]    --> src/merkle/node.rs:163:32
[INFO] [stdout]     |
[INFO] [stdout] 163 |     use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]     |                                ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `NibbleType`, `NibbleVec`, `Nibble`
[INFO] [stdout]  --> src/merkle/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use self::nibble::{Nibble, NibbleVec, NibbleSlice, NibbleType};
[INFO] [stdout]   |                    ^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `Nibble`
[INFO] [stdout]  --> src/ops/insert.rs:2:39
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                                       ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ops/insert.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `self`
[INFO] [stdout]  --> src/ops/delete.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                      ^^^^             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ops/delete.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NibbleSlice`
[INFO] [stdout]  --> src/ops/build.rs:2:39
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rlp`, `self`
[INFO] [stdout]  --> src/ops/build.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `NibbleSlice`, `Nibble`, `self`
[INFO] [stdout]  --> src/ops/get.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stdout]   |                      ^^^^             ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Change`
[INFO] [stdout]  --> src/ops/get.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | use {Change, DatabaseHandle};
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ops/get.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rlp::{self, Rlp};
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `merkle::MerkleNode`
[INFO] [stdout]    --> src/memory.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     use merkle::MerkleNode;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rlp::Rlp`
[INFO] [stdout]    --> src/memory.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |     use rlp::Rlp;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::UnsafeCell`
[INFO] [stdout]    --> src/memory.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     use std::cell::UnsafeCell;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rlp`
[INFO] [stdout]  --> src/mutable.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rlp::{self, Rlp};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]  --> src/merkle/nibble.rs:6:23
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Decodable`
[INFO] [stdout]  --> src/merkle/node.rs:3:39
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::{self, RlpStream, Encodable, Decodable, Rlp, Prototype};
[INFO] [stdout]   |                                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]    --> src/merkle/node.rs:162:16
[INFO] [stdout]     |
[INFO] [stdout] 162 |     use sha3::{Digest, Keccak256};
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DatabaseHandle`
[INFO] [stdout]  --> src/ops/build.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use {Change, DatabaseHandle};
[INFO] [stdout]   |              ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/memory.rs:138:19
[INFO] [stdout]     |
[INFO] [stdout] 138 |         for (key, value) in &map {
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/memory.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut btrie = MemoryTrieMut::build(&map);
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "855cf0a24f16bfc001d32519c1972769af864d744910b63511fb2bd9fb6e0069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "855cf0a24f16bfc001d32519c1972769af864d744910b63511fb2bd9fb6e0069", kill_on_drop: false }`
[INFO] [stdout] 855cf0a24f16bfc001d32519c1972769af864d744910b63511fb2bd9fb6e0069
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d690b6bc70ea59f7182f01bbe97cf5522fcc6cc9511b8ad8cfd228a867e2d6bb
[INFO] running `Command { std: "docker" "start" "-a" "d690b6bc70ea59f7182f01bbe97cf5522fcc6cc9511b8ad8cfd228a867e2d6bb", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `NibbleSlice`, `NibbleVec`, `Nibble`
[INFO] [stderr]   --> src/lib.rs:13:28
[INFO] [stderr]    |
[INFO] [stderr] 13 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stderr]    |                            ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Decodable`, `Encodable`, `Prototype`
[INFO] [stderr]  --> src/merkle/nibble.rs:3:22
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rlp::{RlpStream, Encodable, Decodable, Rlp, Prototype};
[INFO] [stderr]   |                      ^^^^^^^^^  ^^^^^^^^^       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]  --> src/merkle/nibble.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ops::Deref;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Formatter`, `self`
[INFO] [stderr]  --> src/merkle/nibble.rs:7:16
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::fmt::{self, Debug, Formatter};
[INFO] [stderr]   |                ^^^^         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `NibbleSlice`, `Nibble`
[INFO] [stderr]  --> src/merkle/node.rs:1:27
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::nibble::{self, Nibble, NibbleVec, NibbleSlice, NibbleType};
[INFO] [stderr]   |                           ^^^^^^             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `NibbleSlice`, `NibbleType`, `NibbleVec`, `Nibble`
[INFO] [stderr]  --> src/merkle/mod.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::nibble::{Nibble, NibbleVec, NibbleSlice, NibbleType};
[INFO] [stderr]   |                    ^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `NibbleSlice`, `Nibble`
[INFO] [stderr]  --> src/ops/insert.rs:2:39
[INFO] [stderr]   |
[INFO] [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stderr]   |                                       ^^^^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/ops/insert.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rlp::{self, Rlp};
[INFO] [stderr]   |           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `NibbleSlice`, `self`
[INFO] [stderr]  --> src/ops/delete.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stderr]   |                      ^^^^             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/ops/delete.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rlp::{self, Rlp};
[INFO] [stderr]   |           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NibbleSlice`
[INFO] [stderr]  --> src/ops/build.rs:2:39
[INFO] [stderr]   |
[INFO] [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stderr]   |                                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rlp`, `self`
[INFO] [stderr]  --> src/ops/build.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rlp::{self, Rlp};
[INFO] [stderr]   |           ^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `NibbleSlice`, `Nibble`, `self`
[INFO] [stderr]  --> src/ops/get.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stderr]   |                      ^^^^             ^^^^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Change`
[INFO] [stderr]  --> src/ops/get.rs:3:6
[INFO] [stderr]   |
[INFO] [stderr] 3 | use {Change, DatabaseHandle};
[INFO] [stderr]   |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/ops/get.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rlp::{self, Rlp};
[INFO] [stderr]   |           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rlp`
[INFO] [stderr]  --> src/mutable.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rlp::{self, Rlp};
[INFO] [stderr]   |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Hasher`
[INFO] [stderr]  --> src/merkle/nibble.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::hash::{Hash, Hasher};
[INFO] [stderr]   |                       ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Decodable`
[INFO] [stderr]  --> src/merkle/node.rs:3:39
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rlp::{self, RlpStream, Encodable, Decodable, Rlp, Prototype};
[INFO] [stderr]   |                                       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DatabaseHandle`
[INFO] [stderr]  --> src/ops/build.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 | use {Change, DatabaseHandle};
[INFO] [stderr]   |              ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Keccak256`
[INFO] [stderr]    --> src/merkle/node.rs:162:24
[INFO] [stderr]     |
[INFO] [stderr] 162 |     use sha3::{Digest, Keccak256};
[INFO] [stderr]     |                        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `NibbleSlice`, `NibbleVec`, `Nibble`
[INFO] [stderr]    --> src/merkle/node.rs:163:32
[INFO] [stderr]     |
[INFO] [stderr] 163 |     use merkle::nibble::{self, NibbleVec, NibbleSlice, Nibble};
[INFO] [stderr]     |                                ^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `merkle::MerkleNode`
[INFO] [stderr]    --> src/memory.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |     use merkle::MerkleNode;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rlp::Rlp`
[INFO] [stderr]    --> src/memory.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |     use rlp::Rlp;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::UnsafeCell`
[INFO] [stderr]    --> src/memory.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     use std::cell::UnsafeCell;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Digest`
[INFO] [stderr]    --> src/merkle/node.rs:162:16
[INFO] [stderr]     |
[INFO] [stderr] 162 |     use sha3::{Digest, Keccak256};
[INFO] [stderr]     |                ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/memory.rs:138:19
[INFO] [stderr]     |
[INFO] [stderr] 138 |         for (key, value) in &map {
[INFO] [stderr]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/memory.rs:120:13
[INFO] [stderr]     |
[INFO] [stderr] 120 |         let mut btrie = MemoryTrieMut::build(&map);
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `etcommon-trie` (lib) generated 19 warnings
[INFO] [stderr] warning: `etcommon-trie` (lib test) generated 27 warnings (19 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/trie-24f30de0e04d9c38)
[INFO] [stdout] running 5 tests
[INFO] [stderr]    Doc-tests trie
[INFO] [stdout] test merkle::nibble::tests::from_into_key ... ok
[INFO] [stdout] test merkle::node::tests::decode_genesis_state ... ok
[INFO] [stdout] test memory::tests::trie_two_keys ... ok
[INFO] [stdout] test merkle::node::tests::encode_decode ... ok
[INFO] [stdout] test memory::tests::trie_middle_leaf ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d690b6bc70ea59f7182f01bbe97cf5522fcc6cc9511b8ad8cfd228a867e2d6bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d690b6bc70ea59f7182f01bbe97cf5522fcc6cc9511b8ad8cfd228a867e2d6bb", kill_on_drop: false }`
[INFO] [stdout] d690b6bc70ea59f7182f01bbe97cf5522fcc6cc9511b8ad8cfd228a867e2d6bb
