[INFO] fetching crate merkle_trees 0.1.0...
[INFO] checking merkle_trees-0.1.0 against beta for pr-78714
[INFO] extracting crate merkle_trees 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate merkle_trees 0.1.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merkle_trees 0.1.0
[INFO] finished tweaking crates.io crate merkle_trees 0.1.0
[INFO] tweaked toml for crates.io crate merkle_trees 0.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mimc-rs v0.0.2
[INFO] [stderr]   Downloaded unqlite v1.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 02a2ec51b3011f7ad1320af9821179223b78e141be83c5923f53ed7b7650060e
[INFO] running `Command { std: "docker" "start" "-a" "02a2ec51b3011f7ad1320af9821179223b78e141be83c5923f53ed7b7650060e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02a2ec51b3011f7ad1320af9821179223b78e141be83c5923f53ed7b7650060e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02a2ec51b3011f7ad1320af9821179223b78e141be83c5923f53ed7b7650060e", kill_on_drop: false }`
[INFO] [stdout] 02a2ec51b3011f7ad1320af9821179223b78e141be83c5923f53ed7b7650060e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc567ae4f781ac4b00361580fc876fdcc1846f5020f0ed04927a24fe38469203
[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" "dc567ae4f781ac4b00361580fc876fdcc1846f5020f0ed04927a24fe38469203", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking rlp v0.4.6
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]    Compiling bindgen v0.55.1
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking blake2 v0.8.1
[INFO] [stderr]     Checking sled v0.29.2
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking merkle_trees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/compact_merkle_tree.rs:284:28
[INFO] [stdout]     |
[INFO] [stdout] 284 |                     idx += (p - 1);
[INFO] [stdout]     |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/compact_merkle_tree.rs:834:29
[INFO] [stdout]     |
[INFO] [stdout] 834 |         let last_leaf_idx = (size - 1);
[INFO] [stdout]     |                             ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/db.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hasher::Arity2Hasher`
[INFO] [stdout]  --> src/merkle_patricia_trie.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::hasher::Arity2Hasher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::LeafIndex`
[INFO] [stdout]   --> src/merkle_patricia_trie.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::types::LeafIndex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `arrayvec::ArrayVec`
[INFO] [stdout]  --> src/types.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use arrayvec::ArrayVec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::identities::Zero`
[INFO] [stdout]  --> src/types.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num_traits::identities::Zero;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking mimc-rs v0.0.2
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/merkle_patricia_trie.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_leaf`
[INFO] [stdout]   --> src/merkle_patricia_trie.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn is_leaf(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_extension`
[INFO] [stdout]   --> src/merkle_patricia_trie.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn is_extension(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset_root`
[INFO] [stdout]     --> src/merkle_patricia_trie.rs:1373:8
[INFO] [stdout]      |
[INFO] [stdout] 1373 |     fn reset_root(&mut self) {
[INFO] [stdout]      |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling unqlite v1.5.0
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/compact_merkle_tree.rs:284:28
[INFO] [stdout]     |
[INFO] [stdout] 284 |                     idx += (p - 1);
[INFO] [stdout]     |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/compact_merkle_tree.rs:834:29
[INFO] [stdout]     |
[INFO] [stdout] 834 |         let last_leaf_idx = (size - 1);
[INFO] [stdout]     |                             ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/db.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BigInt`
[INFO] [stdout]   --> src/hasher.rs:85:22
[INFO] [stdout]    |
[INFO] [stdout] 85 |     use num_bigint::{BigInt, BigUint, ToBigInt};
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hasher::Arity2Hasher`
[INFO] [stdout]  --> src/merkle_patricia_trie.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::hasher::Arity2Hasher;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::types::LeafIndex`
[INFO] [stdout]   --> src/merkle_patricia_trie.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::types::LeafIndex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::sha2::Sha256`
[INFO] [stdout]    --> src/sparse_merkle_tree.rs:395:9
[INFO] [stdout]     |
[INFO] [stdout] 395 |     use crate::sha2::Sha256;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `arrayvec::ArrayVec`
[INFO] [stdout]  --> src/types.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use arrayvec::ArrayVec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::identities::Zero`
[INFO] [stdout]  --> src/types.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num_traits::identities::Zero;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]    --> src/vanilla_sparse_merkle_tree.rs:344:34
[INFO] [stdout]     |
[INFO] [stdout] 344 |     use self::rand::{thread_rng, Rng};
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num_traits::Pow`
[INFO] [stdout]    --> src/sparse_merkle_tree.rs:404:9
[INFO] [stdout]     |
[INFO] [stdout] 404 |     use num_traits::Pow;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]     --> src/compact_merkle_tree.rs:1063:13
[INFO] [stdout]      |
[INFO] [stdout] 1063 |         let tree = CompactMerkleTree::new(hasher.clone());
[INFO] [stdout]      |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h_l_6`
[INFO] [stdout]     --> src/compact_merkle_tree.rs:1125:13
[INFO] [stdout]      |
[INFO] [stdout] 1125 |         let h_l_6 = hasher.hash_leaf(l_6).unwrap();
[INFO] [stdout]      |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_h_l_6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path_4`
[INFO] [stdout]     --> src/compact_merkle_tree.rs:1220:13
[INFO] [stdout]      |
[INFO] [stdout] 1220 |         let path_4 = tree.append(l_4, &mut db).unwrap();
[INFO] [stdout]      |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_path_4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path_5`
[INFO] [stdout]     --> src/compact_merkle_tree.rs:1231:13
[INFO] [stdout]      |
[INFO] [stdout] 1231 |         let path_5 = tree.append(l_5, &mut db).unwrap();
[INFO] [stdout]      |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_path_5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/merkle_patricia_trie.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset_root`
[INFO] [stdout]     --> src/merkle_patricia_trie.rs:1373:8
[INFO] [stdout]      |
[INFO] [stdout] 1373 |     fn reset_root(&mut self) {
[INFO] [stdout]      |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.86s
[INFO] running `Command { std: "docker" "inspect" "dc567ae4f781ac4b00361580fc876fdcc1846f5020f0ed04927a24fe38469203", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc567ae4f781ac4b00361580fc876fdcc1846f5020f0ed04927a24fe38469203", kill_on_drop: false }`
[INFO] [stdout] dc567ae4f781ac4b00361580fc876fdcc1846f5020f0ed04927a24fe38469203