[INFO] fetching crate ethereum-trie-memory 0.5.0...
[INFO] checking ethereum-trie-memory-0.5.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate ethereum-trie-memory 0.5.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ethereum-trie-memory 0.5.0 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58e64d7bab48dd1fb5fd2a8f78dcca98ffa11b9f05269299ed0453712968a450
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "58e64d7bab48dd1fb5fd2a8f78dcca98ffa11b9f05269299ed0453712968a450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58e64d7bab48dd1fb5fd2a8f78dcca98ffa11b9f05269299ed0453712968a450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58e64d7bab48dd1fb5fd2a8f78dcca98ffa11b9f05269299ed0453712968a450", kill_on_drop: false }`
[INFO] [stdout] 58e64d7bab48dd1fb5fd2a8f78dcca98ffa11b9f05269299ed0453712968a450
[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=forbid" "-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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9be286d81d91340baddfd64623fcd9fbb37fe54b3b5dafe1945702ad33a72f5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f9be286d81d91340baddfd64623fcd9fbb37fe54b3b5dafe1945702ad33a72f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking ethereum-hexutil v0.2.3
[INFO] [stderr]     Checking ethereum-rlp v0.2.3
[INFO] [stderr]     Checking ethereum-bigint v0.2.9
[INFO] [stderr]     Checking ethereum-trie v0.5.0
[INFO] [stderr]     Checking 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: 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: 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: 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: 7 warnings emitted
[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 dev [unoptimized + debuginfo] target(s) in 4.90s
[INFO] running `Command { std: "docker" "inspect" "f9be286d81d91340baddfd64623fcd9fbb37fe54b3b5dafe1945702ad33a72f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9be286d81d91340baddfd64623fcd9fbb37fe54b3b5dafe1945702ad33a72f5", kill_on_drop: false }`
[INFO] [stdout] f9be286d81d91340baddfd64623fcd9fbb37fe54b3b5dafe1945702ad33a72f5