[INFO] cloning repository https://github.com/ABMatrix/merkle-patricia-trie
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ABMatrix/merkle-patricia-trie" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FABMatrix%2Fmerkle-patricia-trie", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FABMatrix%2Fmerkle-patricia-trie'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d06c34bc689b785c3293d57c0919624743be648
[INFO] testing ABMatrix/merkle-patricia-trie against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FABMatrix%2Fmerkle-patricia-trie" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ABMatrix/merkle-patricia-trie
[INFO] finished tweaking git repo https://github.com/ABMatrix/merkle-patricia-trie
[INFO] tweaked toml for git repo https://github.com/ABMatrix/merkle-patricia-trie written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ABMatrix/merkle-patricia-trie on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ABMatrix/merkle-patricia-trie already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/ABMatrix/parity-common.git`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4690eb5f66da66d42aca538c5c754c1514e5a98b16378c5318824e23c124dafc
[INFO] running `Command { std: "docker" "start" "-a" "4690eb5f66da66d42aca538c5c754c1514e5a98b16378c5318824e23c124dafc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4690eb5f66da66d42aca538c5c754c1514e5a98b16378c5318824e23c124dafc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4690eb5f66da66d42aca538c5c754c1514e5a98b16378c5318824e23c124dafc", kill_on_drop: false }`
[INFO] [stdout] 4690eb5f66da66d42aca538c5c754c1514e5a98b16378c5318824e23c124dafc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 986f9145f8d0f5f1da69b7aeceab674e1cb7ab71c88ff7e648e12eab3accc21e
[INFO] running `Command { std: "docker" "start" "-a" "986f9145f8d0f5f1da69b7aeceab674e1cb7ab71c88ff7e648e12eab3accc21e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
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[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling rustc-hex v2.0.1
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling fixed-hash v0.5.0 (https://github.com/ABMatrix/parity-common.git#d45a0274)
[INFO] [stderr]    Compiling tiny-keccak v1.5.0
[INFO] [stderr]    Compiling rlp v0.4.2 (https://github.com/ABMatrix/parity-common.git#d45a0274)
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[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling uint v0.8.1 (https://github.com/ABMatrix/parity-common.git#d45a0274)
[INFO] [stderr]    Compiling primitive-types v0.6.0 (https://github.com/ABMatrix/parity-common.git#d45a0274)
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling keccak-hash v0.4.0 (https://github.com/ABMatrix/parity-common.git#d45a0274)
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling const-random-macro v0.1.6
[INFO] [stderr]    Compiling const-random v0.1.6
[INFO] [stderr]    Compiling ahash v0.2.17
[INFO] [stderr]    Compiling merkle_patricia_trie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::std::*`
[INFO] [stdout]  --> src/nibbles.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::std::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::std::*`
[INFO] [stdout]  --> src/proof.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::std::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         trie.insert(key.as_ref().to_vec(), value.as_ref().to_vec());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let _ = trie.insert(key.as_ref().to_vec(), value.as_ref().to_vec());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/trie.rs:181:17
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn iter(&self) -> TrieIterator{
[INFO] [stdout]     |                 ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn iter(&self) -> TrieIterator<'_>{
[INFO] [stdout]     |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.16s
[INFO] running `Command { std: "docker" "inspect" "986f9145f8d0f5f1da69b7aeceab674e1cb7ab71c88ff7e648e12eab3accc21e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "986f9145f8d0f5f1da69b7aeceab674e1cb7ab71c88ff7e648e12eab3accc21e", kill_on_drop: false }`
[INFO] [stdout] 986f9145f8d0f5f1da69b7aeceab674e1cb7ab71c88ff7e648e12eab3accc21e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db532d292550845c47d23187ff80592d2df3f9367a9aa847fd37405564c78854
[INFO] running `Command { std: "docker" "start" "-a" "db532d292550845c47d23187ff80592d2df3f9367a9aa847fd37405564c78854", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling semver-parser v0.7.0
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[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling rlp v0.4.3
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling static_assertions v0.2.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itertools v0.8.1
[INFO] [stderr]    Compiling same-file v1.0.5
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling num_cpus v1.11.0
[INFO] [stderr]    Compiling impl-rlp v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling uint v0.5.0
[INFO] [stderr]    Compiling walkdir v2.2.9
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling memoffset v0.5.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling const-random-macro v0.1.6
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling fixed-hash v0.3.2
[INFO] [stderr]    Compiling const-random v0.1.6
[INFO] [stderr]    Compiling ahash v0.2.17
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling merkle_patricia_trie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::std::*`
[INFO] [stdout]  --> src/nibbles.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::std::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::std::*`
[INFO] [stdout]  --> src/proof.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::std::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         trie.insert(key.as_ref().to_vec(), value.as_ref().to_vec());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let _ = trie.insert(key.as_ref().to_vec(), value.as_ref().to_vec());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/trie.rs:181:17
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn iter(&self) -> TrieIterator{
[INFO] [stdout]     |                 ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn iter(&self) -> TrieIterator<'_>{
[INFO] [stdout]     |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bstr v0.2.8
[INFO] [stderr]    Compiling serde_json v1.0.41
[INFO] [stderr]    Compiling impl-serde v0.2.3
[INFO] [stderr]    Compiling ethereum-types-serialize v0.2.2
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling ethbloom v0.6.4
[INFO] [stderr]    Compiling ethereum-types v0.5.2
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling tinytemplate v1.0.2
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stdout] warning: unused import: `crate::std::*`
[INFO] [stdout]  --> src/nibbles.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::std::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]    --> src/trie.rs:800:9
[INFO] [stdout]     |
[INFO] [stdout] 800 |     use core::borrow::Borrow;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rlp`
[INFO] [stdout]   --> src/tests.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |     use rlp::{self, Rlp};
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::std::*`
[INFO] [stdout]  --> src/proof.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::std::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/trie.rs:1036:13
[INFO] [stdout]      |
[INFO] [stdout] 1036 |         let mut root1;
[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: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         trie.insert(key.as_ref().to_vec(), value.as_ref().to_vec());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let _ = trie.insert(key.as_ref().to_vec(), value.as_ref().to_vec());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/trie.rs:181:17
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn iter(&self) -> TrieIterator{
[INFO] [stdout]     |                 ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn iter(&self) -> TrieIterator<'_>{
[INFO] [stdout]     |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "db532d292550845c47d23187ff80592d2df3f9367a9aa847fd37405564c78854", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db532d292550845c47d23187ff80592d2df3f9367a9aa847fd37405564c78854", kill_on_drop: false }`
[INFO] [stdout] db532d292550845c47d23187ff80592d2df3f9367a9aa847fd37405564c78854
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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 -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3171eda7284d8dadf9342bc20d5518f1cd18d304a038cbbc332a20d976163e02
[INFO] running `Command { std: "docker" "start" "-a" "3171eda7284d8dadf9342bc20d5518f1cd18d304a038cbbc332a20d976163e02", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::std::*`
[INFO] [stderr]  --> src/nibbles.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::std::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::std::*`
[INFO] [stderr]  --> src/proof.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::std::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/lib.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         trie.insert(key.as_ref().to_vec(), value.as_ref().to_vec());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let _ = trie.insert(key.as_ref().to_vec(), value.as_ref().to_vec());
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]    --> src/trie.rs:181:17
[INFO] [stderr]     |
[INFO] [stderr] 181 |     pub fn iter(&self) -> TrieIterator{
[INFO] [stderr]     |                 ^^^^^     ------------ the lifetime gets resolved as `'_`
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 this lifetime flows to the output
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]     |
[INFO] [stderr] 181 |     pub fn iter(&self) -> TrieIterator<'_>{
[INFO] [stderr]     |                                       ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `merkle_patricia_trie` (lib) generated 4 warnings (run `cargo fix --lib -p merkle_patricia_trie` to apply 2 suggestions)
[INFO] [stderr] warning: unused import: `core::borrow::Borrow`
[INFO] [stderr]    --> src/trie.rs:800:9
[INFO] [stderr]     |
[INFO] [stderr] 800 |     use core::borrow::Borrow;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rlp`
[INFO] [stderr]   --> src/tests.rs:10:21
[INFO] [stderr]    |
[INFO] [stderr] 10 |     use rlp::{self, Rlp};
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/trie.rs:1036:13
[INFO] [stderr]      |
[INFO] [stderr] 1036 |         let mut root1;
[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: `merkle_patricia_trie` (lib test) generated 7 warnings (4 duplicates) (run `cargo fix --lib -p merkle_patricia_trie --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/merkle_patricia_trie-522ad1c001f50bcd)
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test nibbles::tests::test_nibble ... ok
[INFO] [stdout] test proof::tests::test_encode_decode ... ok
[INFO] [stdout] test tests::trie_tests::test_ethereum_receipts_build_proof ... ok
[INFO] [stdout] test tests::trie_tests::test_ethereum_receipts_proof ... ok
[INFO] [stdout] test tests::trie_tests::test_proof_empty_trie ... ok
[INFO] [stdout] test tests::trie_tests::test_proof_basic ... ok
[INFO] [stdout] test trie::tests::iterator_trie ... ok
[INFO] [stdout] test trie::tests::insert_full_branch ... ok
[INFO] [stdout] test tests::trie_tests::test_root ... ok
[INFO] [stdout] test trie::tests::test_trie_contains ... ok
[INFO] [stdout] test trie::tests::test_trie_from_root_and_delete ... ok
[INFO] [stdout] test trie::tests::test_trie_insert ... ok
[INFO] [stdout] test trie::tests::test_multiple_trie_roots ... ok
[INFO] [stdout] test trie::tests::test_trie_remove ... ok
[INFO] [stdout] test trie::tests::test_trie_from_root_and_insert ... ok
[INFO] [stdout] test trie::tests::test_trie_get ... ok
[INFO] [stdout] test trie::tests::test_trie_random_remove ... ok
[INFO] [stdout] test tests::trie_tests::test_proof_one_element ... ok
[INFO] [stdout] test trie::tests::test_trie_from_root ... ok
[INFO] [stdout] test trie::tests::test_delete_stale_keys_with_random_insert_and_delete ... ok
[INFO] [stderr]    Doc-tests merkle_patricia_trie
[INFO] [stdout] test trie::tests::test_trie_random_insert ... ok
[INFO] [stdout] test tests::trie_tests::test_proof_random ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - build_trie (line 44) ... ok
[INFO] [stdout] test src/lib.rs - build_order_trie (line 79) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.59s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3171eda7284d8dadf9342bc20d5518f1cd18d304a038cbbc332a20d976163e02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3171eda7284d8dadf9342bc20d5518f1cd18d304a038cbbc332a20d976163e02", kill_on_drop: false }`
[INFO] [stdout] 3171eda7284d8dadf9342bc20d5518f1cd18d304a038cbbc332a20d976163e02
