[INFO] fetching crate rlibdht 0.1.0...
[INFO] checking rlibdht-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate rlibdht 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate rlibdht 0.1.0
[INFO] finished tweaking crates.io crate rlibdht 0.1.0
[INFO] tweaked toml for crates.io crate rlibdht 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rlibdht 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rlibdht 0.1.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rlibbencode v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbbce3ceef4321611658b09d872522615701396e5bcce5d8d505d04a0c07911a
[INFO] running `Command { std: "docker" "start" "-a" "dbbce3ceef4321611658b09d872522615701396e5bcce5d8d505d04a0c07911a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbbce3ceef4321611658b09d872522615701396e5bcce5d8d505d04a0c07911a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbbce3ceef4321611658b09d872522615701396e5bcce5d8d505d04a0c07911a", kill_on_drop: false }`
[INFO] [stdout] dbbce3ceef4321611658b09d872522615701396e5bcce5d8d505d04a0c07911a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29af04edca8753e4d34a64ef1b72cb10f89150d46723c664b994cbf7602bf9cb
[INFO] running `Command { std: "docker" "start" "-a" "29af04edca8753e4d34a64ef1b72cb10f89150d46723c664b994cbf7602bf9cb", kill_on_drop: false }`
[INFO] [stderr]     Checking rlibbencode v0.1.0
[INFO] [stderr]     Checking rlibdht v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/kad/server.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/kad/server.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BencodeVariable`
[INFO] [stdout]   --> src/kad/server.rs:12:55
[INFO] [stdout]    |
[INFO] [stdout] 12 | use rlibbencode::variables::inter::bencode_variable::{BencodeVariable, FromBencode, ToBencode};
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BencodeVariable`
[INFO] [stdout]   --> src/kad/server.rs:12:55
[INFO] [stdout]    |
[INFO] [stdout] 12 | use rlibbencode::variables::inter::bencode_variable::{BencodeVariable, FromBencode, ToBencode};
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/routing/mainline/m_routing_table.rs:88:21
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 let id = self.bucket_uid(&n.uid);
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:174:27
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn has_queried(&self, n: &Node, now: u128) -> bool {
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `now`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:174:37
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn has_queried(&self, n: &Node, now: u128) -> bool {
[INFO] [stdout]     |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_now`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:178:26
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn bucket_uid(&self, k: &UID) -> usize {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:186:28
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn find_closest(&self, k: &UID, r: usize) -> Vec<Node> {
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:186:37
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn find_closest(&self, k: &UID, r: usize) -> Vec<Node> {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:190:27
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn bucket_size(&self, i: usize) -> usize {
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/routing/mainline/m_routing_table.rs:88:21
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 let id = self.bucket_uid(&n.uid);
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:174:27
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn has_queried(&self, n: &Node, now: u128) -> bool {
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `now`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:174:37
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn has_queried(&self, n: &Node, now: u128) -> bool {
[INFO] [stdout]     |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_now`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:178:26
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn bucket_uid(&self, k: &UID) -> usize {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:186:28
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn find_closest(&self, k: &UID, r: usize) -> Vec<Node> {
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:186:37
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn find_closest(&self, k: &UID, r: usize) -> Vec<Node> {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/routing/mainline/m_routing_table.rs:190:27
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn bucket_size(&self, i: usize) -> usize {
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]   --> src/refresh/refresh_handler.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let handle = thread::spawn({
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handle`
[INFO] [stdout]   --> src/refresh/refresh_handler.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let handle = thread::spawn({
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_STALE_COUNT` is never used
[INFO] [stdout]  --> src/routing/mainline/m_bucket.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const MAX_STALE_COUNT: u32 = 1;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cache` is never read
[INFO] [stdout]  --> src/routing/mainline/m_bucket.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct MBucket {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 7 |     pub(crate) nodes: Vec<Node>,
[INFO] [stdout] 8 |     pub(crate) cache: Vec<Node>
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `resolve_hostname` is never used
[INFO] [stdout]   --> src/lib.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn resolve_hostname(hostname: &str) -> Result<IpAddr, std::io::Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/kad/server.rs:106:33
[INFO] [stdout]     |
[INFO] [stdout] 106 | ...                   server.send_to(data.as_slice(), dst_addr);
[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] 106 |                                 let _ = server.send_to(data.as_slice(), dst_addr);
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_STALE_COUNT` is never used
[INFO] [stdout]  --> src/routing/mainline/m_bucket.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const MAX_STALE_COUNT: u32 = 1;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `cache` is never read
[INFO] [stdout]  --> src/routing/mainline/m_bucket.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct MBucket {
[INFO] [stdout]   |            ------- field in this struct
[INFO] [stdout] 7 |     pub(crate) nodes: Vec<Node>,
[INFO] [stdout] 8 |     pub(crate) cache: Vec<Node>
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/kad/server.rs:106:33
[INFO] [stdout]     |
[INFO] [stdout] 106 | ...                   server.send_to(data.as_slice(), dst_addr);
[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] 106 |                                 let _ = server.send_to(data.as_slice(), dst_addr);
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "29af04edca8753e4d34a64ef1b72cb10f89150d46723c664b994cbf7602bf9cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29af04edca8753e4d34a64ef1b72cb10f89150d46723c664b994cbf7602bf9cb", kill_on_drop: false }`
[INFO] [stdout] 29af04edca8753e4d34a64ef1b72cb10f89150d46723c664b994cbf7602bf9cb