[INFO] fetching crate ethereum-trie-memory 0.5.0...
[INFO] testing ethereum-trie-memory-0.5.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate ethereum-trie-memory 0.5.0 into /workspace/builds/worker-83/source
[INFO] validating manifest of crates.io crate ethereum-trie-memory 0.5.0 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 ethereum-trie-memory 0.5.0
[INFO] finished tweaking crates.io crate ethereum-trie-memory 0.5.0
[INFO] tweaked toml for crates.io crate ethereum-trie-memory 0.5.0 written to /workspace/builds/worker-83/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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] b65a555eaccd34f8d36d9afc55fdf8d1b6b98e9883a6c369405817d05fba858e
[INFO] running `Command { std: "docker" "start" "-a" "b65a555eaccd34f8d36d9afc55fdf8d1b6b98e9883a6c369405817d05fba858e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b65a555eaccd34f8d36d9afc55fdf8d1b6b98e9883a6c369405817d05fba858e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b65a555eaccd34f8d36d9afc55fdf8d1b6b98e9883a6c369405817d05fba858e", kill_on_drop: false }`
[INFO] [stdout] b65a555eaccd34f8d36d9afc55fdf8d1b6b98e9883a6c369405817d05fba858e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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] 50d49247923a7f4108ef2f5f58f8a55a0a3a1db97ec94ef7a40c4d8f06fe1a95
[INFO] running `Command { std: "docker" "start" "-a" "50d49247923a7f4108ef2f5f58f8a55a0a3a1db97ec94ef7a40c4d8f06fe1a95", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ethereum-hexutil v0.2.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling ethereum-rlp v0.2.3
[INFO] [stderr]    Compiling ethereum-bigint v0.2.9
[INFO] [stderr]    Compiling ethereum-trie v0.5.0
[INFO] [stderr]    Compiling ethereum-trie-memory v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DatabaseHandle`
[INFO] [stdout]  --> src/memory.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use trie::{DatabaseHandle, Change, insert, delete, build, get, EMPTY_TRIE_HASH};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rlp`
[INFO] [stdout]  --> src/mutable.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::{self, Rlp};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trie::merkle::MerkleNode`
[INFO] [stdout]  --> src/cache.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use trie::merkle::MerkleNode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rlp::Rlp`
[INFO] [stdout]  --> src/cache.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::Rlp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cache.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut map = self.map.borrow_mut();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/cache.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let mut map = self.map.borrow_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.94s
[INFO] running `Command { std: "docker" "inspect" "50d49247923a7f4108ef2f5f58f8a55a0a3a1db97ec94ef7a40c4d8f06fe1a95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50d49247923a7f4108ef2f5f58f8a55a0a3a1db97ec94ef7a40c4d8f06fe1a95", kill_on_drop: false }`
[INFO] [stdout] 50d49247923a7f4108ef2f5f58f8a55a0a3a1db97ec94ef7a40c4d8f06fe1a95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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] 8331f0afc0e5c9233a4600d2d057320294e397183fe44e85dc2eedd17b9cbc07
[INFO] running `Command { std: "docker" "start" "-a" "8331f0afc0e5c9233a4600d2d057320294e397183fe44e85dc2eedd17b9cbc07", kill_on_drop: false }`
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DatabaseHandle`
[INFO] [stdout]  --> src/memory.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use trie::{DatabaseHandle, Change, insert, delete, build, get, EMPTY_TRIE_HASH};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rlp`
[INFO] [stdout]  --> src/mutable.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::{self, Rlp};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trie::merkle::MerkleNode`
[INFO] [stdout]  --> src/cache.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use trie::merkle::MerkleNode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rlp::Rlp`
[INFO] [stdout]  --> src/cache.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::Rlp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cache.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut map = self.map.borrow_mut();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/cache.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let mut map = self.map.borrow_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ethereum-trie-memory v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DatabaseHandle`
[INFO] [stdout]  --> src/memory.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use trie::{DatabaseHandle, Change, insert, delete, build, get, EMPTY_TRIE_HASH};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trie::merkle::MerkleNode`
[INFO] [stdout]   --> src/memory.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     use trie::merkle::MerkleNode;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rlp::Rlp`
[INFO] [stdout]   --> src/memory.rs:98:9
[INFO] [stdout]    |
[INFO] [stdout] 98 |     use rlp::Rlp;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::UnsafeCell`
[INFO] [stdout]    --> src/memory.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |     use std::cell::UnsafeCell;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hexutil::read_hex`
[INFO] [stdout]    --> src/memory.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     use hexutil::read_hex;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rlp`
[INFO] [stdout]  --> src/mutable.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::{self, Rlp};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trie::merkle::MerkleNode`
[INFO] [stdout]  --> src/cache.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use trie::merkle::MerkleNode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rlp::Rlp`
[INFO] [stdout]  --> src/cache.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rlp::Rlp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/memory.rs:134:19
[INFO] [stdout]     |
[INFO] [stdout] 134 |         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:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         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: variable does not need to be mutable
[INFO] [stdout]   --> src/cache.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let mut map = self.map.borrow_mut();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cache.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let mut map = self.map.borrow_mut();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "8331f0afc0e5c9233a4600d2d057320294e397183fe44e85dc2eedd17b9cbc07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8331f0afc0e5c9233a4600d2d057320294e397183fe44e85dc2eedd17b9cbc07", kill_on_drop: false }`
[INFO] [stdout] 8331f0afc0e5c9233a4600d2d057320294e397183fe44e85dc2eedd17b9cbc07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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] c865d19d41b58b0b443942fbd9bb11413bd938e0162345128bd825fd53d05145
[INFO] running `Command { std: "docker" "start" "-a" "c865d19d41b58b0b443942fbd9bb11413bd938e0162345128bd825fd53d05145", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `DatabaseHandle`
[INFO] [stderr]  --> src/memory.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use trie::{DatabaseHandle, Change, insert, delete, build, get, EMPTY_TRIE_HASH};
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rlp`
[INFO] [stderr]  --> src/mutable.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rlp::{self, Rlp};
[INFO] [stderr]   |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `trie::merkle::MerkleNode`
[INFO] [stderr]  --> src/cache.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use trie::merkle::MerkleNode;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rlp::Rlp`
[INFO] [stderr]  --> src/cache.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rlp::Rlp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cache.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let mut map = self.map.borrow_mut();
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/cache.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let mut map = self.map.borrow_mut();
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `trie::merkle::MerkleNode`
[INFO] [stderr]   --> src/memory.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 97 |     use trie::merkle::MerkleNode;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rlp::Rlp`
[INFO] [stderr]   --> src/memory.rs:98:9
[INFO] [stderr]    |
[INFO] [stderr] 98 |     use rlp::Rlp;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::UnsafeCell`
[INFO] [stderr]    --> src/memory.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |     use std::cell::UnsafeCell;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hexutil::read_hex`
[INFO] [stderr]    --> src/memory.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |     use hexutil::read_hex;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/memory.rs:134:19
[INFO] [stderr]     |
[INFO] [stderr] 134 |         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:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |         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: variable does not need to be mutable
[INFO] [stderr]   --> src/cache.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let mut map = self.map.borrow_mut();
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `ethereum-trie-memory` (lib) generated 7 warnings
[INFO] [stderr] warning: `ethereum-trie-memory` (lib test) generated 13 warnings (6 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/trie_memory-167054fba0dc6c82)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test memory::tests::trie_two_keys ... ok
[INFO] [stdout] test memory::tests::trie_middle_leaf ... ok
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests trie_memory
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[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" "c865d19d41b58b0b443942fbd9bb11413bd938e0162345128bd825fd53d05145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c865d19d41b58b0b443942fbd9bb11413bd938e0162345128bd825fd53d05145", kill_on_drop: false }`
[INFO] [stdout] c865d19d41b58b0b443942fbd9bb11413bd938e0162345128bd825fd53d05145
