[INFO] cloning repository https://github.com/kcalvinalvin/rustreexo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kcalvinalvin/rustreexo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkcalvinalvin%2Frustreexo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkcalvinalvin%2Frustreexo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fa88a0d8371fc1a2ff4c27a1c2e112d048d9cd5
[INFO] testing kcalvinalvin/rustreexo against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkcalvinalvin%2Frustreexo" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kcalvinalvin/rustreexo on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kcalvinalvin/rustreexo
[INFO] finished tweaking git repo https://github.com/kcalvinalvin/rustreexo
[INFO] tweaked toml for git repo https://github.com/kcalvinalvin/rustreexo written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/kcalvinalvin/rustreexo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bech32 v0.7.2
[INFO] [stderr]   Downloaded bitcoin_hashes v0.7.6
[INFO] [stderr]   Downloaded secp256k1 v0.17.2
[INFO] [stderr]   Downloaded bitcoin v0.23.0
[INFO] [stderr]   Downloaded secp256k1-sys v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8c926a3b05938c9a8de02aae0d44c6b5eadc4962ad70911a13edb08f71b8561
[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" "d8c926a3b05938c9a8de02aae0d44c6b5eadc4962ad70911a13edb08f71b8561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8c926a3b05938c9a8de02aae0d44c6b5eadc4962ad70911a13edb08f71b8561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8c926a3b05938c9a8de02aae0d44c6b5eadc4962ad70911a13edb08f71b8561", kill_on_drop: false }`
[INFO] [stdout] d8c926a3b05938c9a8de02aae0d44c6b5eadc4962ad70911a13edb08f71b8561
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bb0580a88ea5969d4d90a5704de72d87d6e5e15d2a7917e1ced8ebff5b5bec6
[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" "2bb0580a88ea5969d4d90a5704de72d87d6e5e15d2a7917e1ced8ebff5b5bec6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]    Compiling bitcoin_hashes v0.7.6
[INFO] [stderr]    Compiling bech32 v0.7.2
[INFO] [stderr]    Compiling secp256k1-sys v0.1.2
[INFO] [stderr]    Compiling secp256k1 v0.17.2
[INFO] [stderr]    Compiling bitcoin v0.23.0
[INFO] [stderr]    Compiling rustreexo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/accumulator/pollard.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashEngine`
[INFO] [stdout]   --> src/accumulator/pollard.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 | use bitcoin::hashes::{sha256, Hash, HashEngine};
[INFO] [stdout]    |                                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hash`
[INFO] [stdout]   --> src/accumulator/pollard.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | use bitcoin::hashes::{sha256, Hash, HashEngine};
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_leaves`
[INFO] [stdout]    --> src/accumulator/util.rs:240:22
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stdout]     |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_leaves`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `forest_rows`
[INFO] [stdout]    --> src/accumulator/util.rs:240:39
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_forest_rows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value passed to `p_node_sib` is never read
[INFO] [stdout]    --> src/accumulator/pollard.rs:153:48
[INFO] [stdout]     |
[INFO] [stdout] 153 |         fn grab_niece(mut p_node: PolNode, mut p_node_sib: PolNode, branch_len: u8, bits: u64) -> Option<(PolNode, PolNode, u8)> {
[INFO] [stdout]     |                                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remember`
[INFO] [stdout]   --> src/accumulator/pollard.rs:69:50
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn add_single(&mut self, utxo: sha256::Hash, remember: bool) {
[INFO] [stdout]    |                                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remember`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaves_after_del`
[INFO] [stdout]    --> src/accumulator/pollard.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let leaves_after_del = self.num_leaves - dels.len() as u64;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaves_after_del`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/accumulator/pollard.rs:127:26
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn remove(&mut self, mut dels: Vec<u64>) {
[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: function is never used: `row_offset`
[INFO] [stdout]   --> src/accumulator/util.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn row_offset(row: u8, forest_rows: u8) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `child`
[INFO] [stdout]    --> src/accumulator/util.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn child(pos: u64, forest_rows: u8) -> u64 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `n_grandchild`
[INFO] [stdout]    --> src/accumulator/util.rs:132:4
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn n_grandchild(pos: u64, drop: u8, forest_rows: u8) -> Result<u64, u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cousin`
[INFO] [stdout]    --> src/accumulator/util.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn cousin(pos: u64) -> u64 {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num_roots`
[INFO] [stdout]    --> src/accumulator/util.rs:216:4
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn num_roots(num_leaves: u64) -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_roots_reverse`
[INFO] [stdout]    --> src/accumulator/util.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtree_positions`
[INFO] [stdout]    --> src/accumulator/util.rs:246:4
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn subtree_positions() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtree_leafrange`
[INFO] [stdout]    --> src/accumulator/util.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn subtree_leafrange() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_leaves`
[INFO] [stdout]    --> src/accumulator/util.rs:250:4
[INFO] [stdout]     |
[INFO] [stdout] 250 | fn to_leaves() {}
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `previous_pow2`
[INFO] [stdout]    --> src/accumulator/util.rs:254:4
[INFO] [stdout]     |
[INFO] [stdout] 254 | fn previous_pow2(n: u64) -> u64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `block_header`
[INFO] [stdout]   --> src/accumulator/types.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     block_header: HASH,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `outpoint`
[INFO] [stdout]   --> src/accumulator/types.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     outpoint: transaction::OutPoint,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> src/accumulator/types.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     height: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `is_coinbase`
[INFO] [stdout]   --> src/accumulator/types.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     is_coinbase: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `amt`
[INFO] [stdout]   --> src/accumulator/types.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     amt: i64,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pk_script`
[INFO] [stdout]   --> src/accumulator/types.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pk_script: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grab_pos`
[INFO] [stdout]    --> src/accumulator/pollard.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn grab_pos(&mut self, pos: u64) -> Option<(PolNode, PolNode, HashableNode)> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `grab_niece`
[INFO] [stdout]    --> src/accumulator/pollard.rs:153:12
[INFO] [stdout]     |
[INFO] [stdout] 153 |         fn grab_niece(mut p_node: PolNode, mut p_node_sib: PolNode, branch_len: u8, bits: u64) -> Option<(PolNode, PolNode, u8)> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `aunt_op`
[INFO] [stdout]    --> src/accumulator/pollard.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn aunt_op(&self) -> sha256::Hash {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pol_swap`
[INFO] [stdout]    --> src/accumulator/pollard.rs:293:4
[INFO] [stdout]     |
[INFO] [stdout] 293 | fn pol_swap<'a, 'b>(mut a: &'a mut PolNode, mut asib: &'b mut PolNode, mut b: &'a mut PolNode, mut bsib: &'b mut PolNode) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.94s
[INFO] running `Command { std: "docker" "inspect" "2bb0580a88ea5969d4d90a5704de72d87d6e5e15d2a7917e1ced8ebff5b5bec6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb0580a88ea5969d4d90a5704de72d87d6e5e15d2a7917e1ced8ebff5b5bec6", kill_on_drop: false }`
[INFO] [stdout] 2bb0580a88ea5969d4d90a5704de72d87d6e5e15d2a7917e1ced8ebff5b5bec6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", 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] 362e5543d5b7bfa91ad41c6a08a164e7e4783017bffc67dbb48127fa06e830e3
[INFO] running `Command { std: "docker" "start" "-a" "362e5543d5b7bfa91ad41c6a08a164e7e4783017bffc67dbb48127fa06e830e3", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/accumulator/pollard.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashEngine`
[INFO] [stdout]   --> src/accumulator/pollard.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 | use bitcoin::hashes::{sha256, Hash, HashEngine};
[INFO] [stdout]    |                                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hash`
[INFO] [stdout]   --> src/accumulator/pollard.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | use bitcoin::hashes::{sha256, Hash, HashEngine};
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_leaves`
[INFO] [stdout]    --> src/accumulator/util.rs:240:22
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stdout]     |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_leaves`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `forest_rows`
[INFO] [stdout]    --> src/accumulator/util.rs:240:39
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_forest_rows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value passed to `p_node_sib` is never read
[INFO] [stdout]    --> src/accumulator/pollard.rs:153:48
[INFO] [stdout]     |
[INFO] [stdout] 153 |         fn grab_niece(mut p_node: PolNode, mut p_node_sib: PolNode, branch_len: u8, bits: u64) -> Option<(PolNode, PolNode, u8)> {
[INFO] [stdout]     |                                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remember`
[INFO] [stdout]   --> src/accumulator/pollard.rs:69:50
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn add_single(&mut self, utxo: sha256::Hash, remember: bool) {
[INFO] [stdout]    |                                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remember`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaves_after_del`
[INFO] [stdout]    --> src/accumulator/pollard.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let leaves_after_del = self.num_leaves - dels.len() as u64;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaves_after_del`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/accumulator/pollard.rs:127:26
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn remove(&mut self, mut dels: Vec<u64>) {
[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: function is never used: `row_offset`
[INFO] [stdout]   --> src/accumulator/util.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn row_offset(row: u8, forest_rows: u8) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `child`
[INFO] [stdout]    --> src/accumulator/util.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn child(pos: u64, forest_rows: u8) -> u64 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `n_grandchild`
[INFO] [stdout]    --> src/accumulator/util.rs:132:4
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn n_grandchild(pos: u64, drop: u8, forest_rows: u8) -> Result<u64, u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cousin`
[INFO] [stdout]    --> src/accumulator/util.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn cousin(pos: u64) -> u64 {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num_roots`
[INFO] [stdout]    --> src/accumulator/util.rs:216:4
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn num_roots(num_leaves: u64) -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_roots_reverse`
[INFO] [stdout]    --> src/accumulator/util.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtree_positions`
[INFO] [stdout]    --> src/accumulator/util.rs:246:4
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn subtree_positions() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtree_leafrange`
[INFO] [stdout]    --> src/accumulator/util.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn subtree_leafrange() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_leaves`
[INFO] [stdout]    --> src/accumulator/util.rs:250:4
[INFO] [stdout]     |
[INFO] [stdout] 250 | fn to_leaves() {}
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `previous_pow2`
[INFO] [stdout]    --> src/accumulator/util.rs:254:4
[INFO] [stdout]     |
[INFO] [stdout] 254 | fn previous_pow2(n: u64) -> u64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `block_header`
[INFO] [stdout]   --> src/accumulator/types.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     block_header: HASH,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `outpoint`
[INFO] [stdout]   --> src/accumulator/types.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     outpoint: transaction::OutPoint,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> src/accumulator/types.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     height: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `is_coinbase`
[INFO] [stdout]   --> src/accumulator/types.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     is_coinbase: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `amt`
[INFO] [stdout]   --> src/accumulator/types.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     amt: i64,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pk_script`
[INFO] [stdout]   --> src/accumulator/types.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pk_script: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grab_pos`
[INFO] [stdout]    --> src/accumulator/pollard.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn grab_pos(&mut self, pos: u64) -> Option<(PolNode, PolNode, HashableNode)> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `grab_niece`
[INFO] [stdout]    --> src/accumulator/pollard.rs:153:12
[INFO] [stdout]     |
[INFO] [stdout] 153 |         fn grab_niece(mut p_node: PolNode, mut p_node_sib: PolNode, branch_len: u8, bits: u64) -> Option<(PolNode, PolNode, u8)> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `aunt_op`
[INFO] [stdout]    --> src/accumulator/pollard.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn aunt_op(&self) -> sha256::Hash {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pol_swap`
[INFO] [stdout]    --> src/accumulator/pollard.rs:293:4
[INFO] [stdout]     |
[INFO] [stdout] 293 | fn pol_swap<'a, 'b>(mut a: &'a mut PolNode, mut asib: &'b mut PolNode, mut b: &'a mut PolNode, mut bsib: &'b mut PolNode) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustreexo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `println as info`, `println as warn`
[INFO] [stdout]    --> src/accumulator/util.rs:278:11
[INFO] [stdout]     |
[INFO] [stdout] 278 | use std::{println as info, println as warn};
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/accumulator/pollard.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashEngine`
[INFO] [stdout]   --> src/accumulator/pollard.rs:12:37
[INFO] [stdout]    |
[INFO] [stdout] 12 | use bitcoin::hashes::{sha256, Hash, HashEngine};
[INFO] [stdout]    |                                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]    --> src/accumulator/pollard.rs:415:13
[INFO] [stdout]     |
[INFO] [stdout] 415 |         use std::mem;
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hash`
[INFO] [stdout]   --> src/accumulator/pollard.rs:12:31
[INFO] [stdout]    |
[INFO] [stdout] 12 | use bitcoin::hashes::{sha256, Hash, HashEngine};
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_leaves`
[INFO] [stdout]    --> src/accumulator/util.rs:240:22
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stdout]     |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_leaves`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `forest_rows`
[INFO] [stdout]    --> src/accumulator/util.rs:240:39
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_forest_rows`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value passed to `p_node_sib` is never read
[INFO] [stdout]    --> src/accumulator/pollard.rs:153:48
[INFO] [stdout]     |
[INFO] [stdout] 153 |         fn grab_niece(mut p_node: PolNode, mut p_node_sib: PolNode, branch_len: u8, bits: u64) -> Option<(PolNode, PolNode, u8)> {
[INFO] [stdout]     |                                                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remember`
[INFO] [stdout]   --> src/accumulator/pollard.rs:69:50
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn add_single(&mut self, utxo: sha256::Hash, remember: bool) {
[INFO] [stdout]    |                                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remember`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaves_after_del`
[INFO] [stdout]    --> src/accumulator/pollard.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let leaves_after_del = self.num_leaves - dels.len() as u64;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaves_after_del`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h1_copy`
[INFO] [stdout]    --> src/accumulator/pollard.rs:421:13
[INFO] [stdout]     |
[INFO] [stdout] 421 |         let h1_copy = h1.clone();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_h1_copy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h2_copy`
[INFO] [stdout]    --> src/accumulator/pollard.rs:427:13
[INFO] [stdout]     |
[INFO] [stdout] 427 |         let h2_copy = h2.clone();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_h2_copy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h3_copy`
[INFO] [stdout]    --> src/accumulator/pollard.rs:433:13
[INFO] [stdout]     |
[INFO] [stdout] 433 |         let h3_copy = h3.clone();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_h3_copy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h4_copy`
[INFO] [stdout]    --> src/accumulator/pollard.rs:439:13
[INFO] [stdout]     |
[INFO] [stdout] 439 |         let h4_copy = h4.clone();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_h4_copy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/accumulator/pollard.rs:127:26
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn remove(&mut self, mut dels: Vec<u64>) {
[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: function is never used: `child`
[INFO] [stdout]    --> src/accumulator/util.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn child(pos: u64, forest_rows: u8) -> u64 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `n_grandchild`
[INFO] [stdout]    --> src/accumulator/util.rs:132:4
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn n_grandchild(pos: u64, drop: u8, forest_rows: u8) -> Result<u64, u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cousin`
[INFO] [stdout]    --> src/accumulator/util.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn cousin(pos: u64) -> u64 {
[INFO] [stdout]     |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num_roots`
[INFO] [stdout]    --> src/accumulator/util.rs:216:4
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn num_roots(num_leaves: u64) -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_roots_reverse`
[INFO] [stdout]    --> src/accumulator/util.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtree_positions`
[INFO] [stdout]    --> src/accumulator/util.rs:246:4
[INFO] [stdout]     |
[INFO] [stdout] 246 | fn subtree_positions() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtree_leafrange`
[INFO] [stdout]    --> src/accumulator/util.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn subtree_leafrange() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_leaves`
[INFO] [stdout]    --> src/accumulator/util.rs:250:4
[INFO] [stdout]     |
[INFO] [stdout] 250 | fn to_leaves() {}
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `previous_pow2`
[INFO] [stdout]    --> src/accumulator/util.rs:254:4
[INFO] [stdout]     |
[INFO] [stdout] 254 | fn previous_pow2(n: u64) -> u64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `block_header`
[INFO] [stdout]   --> src/accumulator/types.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     block_header: HASH,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `outpoint`
[INFO] [stdout]   --> src/accumulator/types.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     outpoint: transaction::OutPoint,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> src/accumulator/types.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     height: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `is_coinbase`
[INFO] [stdout]   --> src/accumulator/types.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     is_coinbase: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `amt`
[INFO] [stdout]   --> src/accumulator/types.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     amt: i64,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pk_script`
[INFO] [stdout]   --> src/accumulator/types.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pk_script: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grab_pos`
[INFO] [stdout]    --> src/accumulator/pollard.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn grab_pos(&mut self, pos: u64) -> Option<(PolNode, PolNode, HashableNode)> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `grab_niece`
[INFO] [stdout]    --> src/accumulator/pollard.rs:153:12
[INFO] [stdout]     |
[INFO] [stdout] 153 |         fn grab_niece(mut p_node: PolNode, mut p_node_sib: PolNode, branch_len: u8, bits: u64) -> Option<(PolNode, PolNode, u8)> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `aunt_op`
[INFO] [stdout]    --> src/accumulator/pollard.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn aunt_op(&self) -> sha256::Hash {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pol_swap`
[INFO] [stdout]    --> src/accumulator/pollard.rs:293:4
[INFO] [stdout]     |
[INFO] [stdout] 293 | fn pol_swap<'a, 'b>(mut a: &'a mut PolNode, mut asib: &'b mut PolNode, mut b: &'a mut PolNode, mut bsib: &'b mut PolNode) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_root`
[INFO] [stdout]    --> src/accumulator/pollard.rs:356:8
[INFO] [stdout]     |
[INFO] [stdout] 356 |     fn check_root() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_pol_del`
[INFO] [stdout]    --> src/accumulator/pollard.rs:359:8
[INFO] [stdout]     |
[INFO] [stdout] 359 |     fn test_pol_del() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/accumulator/pollard.rs:316:13
[INFO] [stdout]     |
[INFO] [stdout] 316 |             &pollard.modify(vec![leaf], vec![]);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 316 |             let _ = &pollard.modify(vec![leaf], vec![]);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/accumulator/pollard.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |             &pol.modify(vec![leaf], vec![]);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 375 |             let _ = &pol.modify(vec![leaf], vec![]);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.41s
[INFO] running `Command { std: "docker" "inspect" "362e5543d5b7bfa91ad41c6a08a164e7e4783017bffc67dbb48127fa06e830e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "362e5543d5b7bfa91ad41c6a08a164e7e4783017bffc67dbb48127fa06e830e3", kill_on_drop: false }`
[INFO] [stdout] 362e5543d5b7bfa91ad41c6a08a164e7e4783017bffc67dbb48127fa06e830e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", 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] 51e2f47d7c65481bfb9d693a36541b23793e83fb2ed5cca80277a840266703c8
[INFO] running `Command { std: "docker" "start" "-a" "51e2f47d7c65481bfb9d693a36541b23793e83fb2ed5cca80277a840266703c8", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/accumulator/pollard.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HashEngine`
[INFO] [stderr]   --> src/accumulator/pollard.rs:12:37
[INFO] [stderr]    |
[INFO] [stderr] 12 | use bitcoin::hashes::{sha256, Hash, HashEngine};
[INFO] [stderr]    |                                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Hash`
[INFO] [stderr]   --> src/accumulator/pollard.rs:12:31
[INFO] [stderr]    |
[INFO] [stderr] 12 | use bitcoin::hashes::{sha256, Hash, HashEngine};
[INFO] [stderr]    |                               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_leaves`
[INFO] [stderr]    --> src/accumulator/util.rs:240:22
[INFO] [stderr]     |
[INFO] [stderr] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stderr]     |                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_leaves`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `forest_rows`
[INFO] [stderr]    --> src/accumulator/util.rs:240:39
[INFO] [stderr]     |
[INFO] [stderr] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stderr]     |                                       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_forest_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: value passed to `p_node_sib` is never read
[INFO] [stderr]    --> src/accumulator/pollard.rs:153:48
[INFO] [stderr]     |
[INFO] [stderr] 153 |         fn grab_niece(mut p_node: PolNode, mut p_node_sib: PolNode, branch_len: u8, bits: u64) -> Option<(PolNode, PolNode, u8)> {
[INFO] [stderr]     |                                                ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `remember`
[INFO] [stderr]   --> src/accumulator/pollard.rs:69:50
[INFO] [stderr]    |
[INFO] [stderr] 69 |     fn add_single(&mut self, utxo: sha256::Hash, remember: bool) {
[INFO] [stderr]    |                                                  ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remember`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `leaves_after_del`
[INFO] [stderr]    --> src/accumulator/pollard.rs:135:13
[INFO] [stderr]     |
[INFO] [stderr] 135 |         let leaves_after_del = self.num_leaves - dels.len() as u64;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_leaves_after_del`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/accumulator/pollard.rs:127:26
[INFO] [stderr]     |
[INFO] [stderr] 127 |     fn remove(&mut self, mut dels: Vec<u64>) {
[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: function is never used: `row_offset`
[INFO] [stderr]   --> src/accumulator/util.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn row_offset(row: u8, forest_rows: u8) -> u64 {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `child`
[INFO] [stderr]    --> src/accumulator/util.rs:124:4
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn child(pos: u64, forest_rows: u8) -> u64 {
[INFO] [stderr]     |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `n_grandchild`
[INFO] [stderr]    --> src/accumulator/util.rs:132:4
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn n_grandchild(pos: u64, drop: u8, forest_rows: u8) -> Result<u64, u8> {
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cousin`
[INFO] [stderr]    --> src/accumulator/util.rs:166:4
[INFO] [stderr]     |
[INFO] [stderr] 166 | fn cousin(pos: u64) -> u64 {
[INFO] [stderr]     |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `num_roots`
[INFO] [stderr]    --> src/accumulator/util.rs:216:4
[INFO] [stderr]     |
[INFO] [stderr] 216 | fn num_roots(num_leaves: u64) -> u8 {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_roots_reverse`
[INFO] [stderr]    --> src/accumulator/util.rs:240:4
[INFO] [stderr]     |
[INFO] [stderr] 240 | fn get_roots_reverse(num_leaves: u64, forest_rows: u8) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `subtree_positions`
[INFO] [stderr]    --> src/accumulator/util.rs:246:4
[INFO] [stderr]     |
[INFO] [stderr] 246 | fn subtree_positions() {}
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `subtree_leafrange`
[INFO] [stderr]    --> src/accumulator/util.rs:248:4
[INFO] [stderr]     |
[INFO] [stderr] 248 | fn subtree_leafrange() {}
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_leaves`
[INFO] [stderr]    --> src/accumulator/util.rs:250:4
[INFO] [stderr]     |
[INFO] [stderr] 250 | fn to_leaves() {}
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `previous_pow2`
[INFO] [stderr]    --> src/accumulator/util.rs:254:4
[INFO] [stderr]     |
[INFO] [stderr] 254 | fn previous_pow2(n: u64) -> u64 {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `block_header`
[INFO] [stderr]   --> src/accumulator/types.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     block_header: HASH,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `outpoint`
[INFO] [stderr]   --> src/accumulator/types.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     outpoint: transaction::OutPoint,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `height`
[INFO] [stderr]   --> src/accumulator/types.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     height: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `is_coinbase`
[INFO] [stderr]   --> src/accumulator/types.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     is_coinbase: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `amt`
[INFO] [stderr]   --> src/accumulator/types.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     amt: i64,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pk_script`
[INFO] [stderr]   --> src/accumulator/types.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pk_script: Vec<u8>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `grab_pos`
[INFO] [stderr]    --> src/accumulator/pollard.rs:151:8
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn grab_pos(&mut self, pos: u64) -> Option<(PolNode, PolNode, HashableNode)> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `grab_niece`
[INFO] [stderr]    --> src/accumulator/pollard.rs:153:12
[INFO] [stderr]     |
[INFO] [stderr] 153 |         fn grab_niece(mut p_node: PolNode, mut p_node_sib: PolNode, branch_len: u8, bits: u64) -> Option<(PolNode, PolNode, u8)> {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `aunt_op`
[INFO] [stderr]    --> src/accumulator/pollard.rs:244:8
[INFO] [stderr]     |
[INFO] [stderr] 244 |     fn aunt_op(&self) -> sha256::Hash {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pol_swap`
[INFO] [stderr]    --> src/accumulator/pollard.rs:293:4
[INFO] [stderr]     |
[INFO] [stderr] 293 | fn pol_swap<'a, 'b>(mut a: &'a mut PolNode, mut asib: &'b mut PolNode, mut b: &'a mut PolNode, mut bsib: &'b mut PolNode) {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `println as info`, `println as warn`
[INFO] [stderr]    --> src/accumulator/util.rs:278:11
[INFO] [stderr]     |
[INFO] [stderr] 278 | use std::{println as info, println as warn};
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/accumulator/pollard.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]    --> src/accumulator/pollard.rs:415:13
[INFO] [stderr]     |
[INFO] [stderr] 415 |         use std::mem;
[INFO] [stderr]     |             ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h1_copy`
[INFO] [stderr]    --> src/accumulator/pollard.rs:421:13
[INFO] [stderr]     |
[INFO] [stderr] 421 |         let h1_copy = h1.clone();
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_h1_copy`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h2_copy`
[INFO] [stderr]    --> src/accumulator/pollard.rs:427:13
[INFO] [stderr]     |
[INFO] [stderr] 427 |         let h2_copy = h2.clone();
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_h2_copy`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h3_copy`
[INFO] [stderr]    --> src/accumulator/pollard.rs:433:13
[INFO] [stderr]     |
[INFO] [stderr] 433 |         let h3_copy = h3.clone();
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_h3_copy`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h4_copy`
[INFO] [stderr]    --> src/accumulator/pollard.rs:439:13
[INFO] [stderr]     |
[INFO] [stderr] 439 |         let h4_copy = h4.clone();
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_h4_copy`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `child`
[INFO] [stderr]    --> src/accumulator/util.rs:124:4
[INFO] [stderr]     |
[INFO] [stderr] 124 | fn child(pos: u64, forest_rows: u8) -> u64 {
[INFO] [stderr]     |    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `check_root`
[INFO] [stderr]    --> src/accumulator/pollard.rs:356:8
[INFO] [stderr]     |
[INFO] [stderr] 356 |     fn check_root() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_pol_del`
[INFO] [stderr]    --> src/accumulator/pollard.rs:359:8
[INFO] [stderr]     |
[INFO] [stderr] 359 |     fn test_pol_del() {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/accumulator/pollard.rs:316:13
[INFO] [stderr]     |
[INFO] [stderr] 316 |             &pollard.modify(vec![leaf], vec![]);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 316 |             let _ = &pollard.modify(vec![leaf], vec![]);
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/accumulator/pollard.rs:375:13
[INFO] [stderr]     |
[INFO] [stderr] 375 |             &pol.modify(vec![leaf], vec![]);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 375 |             let _ = &pol.modify(vec![leaf], vec![]);
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rustreexo` (lib) generated 29 warnings
[INFO] [stderr] warning: `rustreexo` (lib test) generated 38 warnings (26 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustreexo-b4e6240110e14fd7)
[INFO] [stdout] running 7 tests
[INFO] [stdout] test accumulator::pollard::tests::test_pol_swap ... ok
[INFO] [stdout] test accumulator::util::tests::test_detect_subtree_rows ... ok
[INFO] [stdout] test accumulator::util::tests::test_detect_row ... ok
[INFO] [stdout] test accumulator::util::tests::test_root_position ... ok
[INFO] [stdout] test accumulator::util::tests::pow_tests ... ok
[INFO] [stdout] test accumulator::util::tests::util_test ... ok
[INFO] [stdout] test accumulator::pollard::tests::test_pol_add ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.27s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rustreexo
[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" "51e2f47d7c65481bfb9d693a36541b23793e83fb2ed5cca80277a840266703c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51e2f47d7c65481bfb9d693a36541b23793e83fb2ed5cca80277a840266703c8", kill_on_drop: false }`
[INFO] [stdout] 51e2f47d7c65481bfb9d693a36541b23793e83fb2ed5cca80277a840266703c8