[INFO] fetching crate dhust 0.1.0...
[INFO] checking dhust-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate dhust 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate dhust 0.1.0
[INFO] finished tweaking crates.io crate dhust 0.1.0
[INFO] tweaked toml for crates.io crate dhust 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dhust 0.1.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 64 packages to latest compatible versions
[INFO] [stderr]       Adding simple_logger v4.3.3 (available: v5.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 877cf9fb96483535e1eed055a19e06c25760a7db1a6a3a6979cd890c5b1542b5
[INFO] running `Command { std: "docker" "start" "-a" "877cf9fb96483535e1eed055a19e06c25760a7db1a6a3a6979cd890c5b1542b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "877cf9fb96483535e1eed055a19e06c25760a7db1a6a3a6979cd890c5b1542b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "877cf9fb96483535e1eed055a19e06c25760a7db1a6a3a6979cd890c5b1542b5", kill_on_drop: false }`
[INFO] [stdout] 877cf9fb96483535e1eed055a19e06c25760a7db1a6a3a6979cd890c5b1542b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd97723e91efbe602023f790f1896ccbb78c480208bacc058309d85aef5a04fd
[INFO] running `Command { std: "docker" "start" "-a" "fd97723e91efbe602023f790f1896ccbb78c480208bacc058309d85aef5a04fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]    Compiling time-core v0.1.4
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]     Checking itoa v1.0.15
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking num_threads v0.1.7
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking bytes v1.10.1
[INFO] [stderr]     Checking colored v2.2.0
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking deranged v0.4.0
[INFO] [stderr]    Compiling time-macros v0.2.22
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking signal-hook-registry v1.4.5
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]     Checking time v0.3.41
[INFO] [stderr]     Checking simple_logger v4.3.3
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]     Checking tokio v1.45.1
[INFO] [stderr]     Checking dhust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> src/lib.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time::Duration, sync::{Arc, Mutex}, net::{IpAddr, Ipv4Addr, SocketAddr, SocketAddrV4}};
[INFO] [stdout]   |                                                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> src/lib.rs:1:53
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{time::Duration, sync::{Arc, Mutex}, net::{IpAddr, Ipv4Addr, SocketAddr, SocketAddrV4}};
[INFO] [stdout]   |                                                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/lib.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |     async fn fix_fingers(c: Arc<Mutex<chord_node::ChordNode>>) {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/lib.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |     async fn fix_fingers(c: Arc<Mutex<chord_node::ChordNode>>) {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/lib.rs:52:24
[INFO] [stdout]    |
[INFO] [stdout] 52 |     async fn stabilize(c: Arc<Mutex<chord_node::ChordNode>>) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/lib.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 |     async fn check_pred(c: Arc<Mutex<chord_node::ChordNode>>) {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/lib.rs:52:24
[INFO] [stdout]    |
[INFO] [stdout] 52 |     async fn stabilize(c: Arc<Mutex<chord_node::ChordNode>>) {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lib.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub async fn lookups (&self, key: &str) -> SocketAddr {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lib.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let t = self.data.lock();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/lib.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 |     async fn check_pred(c: Arc<Mutex<chord_node::ChordNode>>) {
[INFO] [stdout]    |                         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `lookup` is never used
[INFO] [stdout]  --> src/chord_node.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl ChordNode {
[INFO] [stdout]   | -------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn lookup() {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lib.rs:38:34
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub async fn lookups (&self, key: &str) -> SocketAddr {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lib.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let t = self.data.lock();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `lookup` is never used
[INFO] [stdout]  --> src/chord_node.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl ChordNode {
[INFO] [stdout]   | -------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn lookup() {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.14s
[INFO] running `Command { std: "docker" "inspect" "fd97723e91efbe602023f790f1896ccbb78c480208bacc058309d85aef5a04fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd97723e91efbe602023f790f1896ccbb78c480208bacc058309d85aef5a04fd", kill_on_drop: false }`
[INFO] [stdout] fd97723e91efbe602023f790f1896ccbb78c480208bacc058309d85aef5a04fd