[INFO] cloning repository https://github.com/rascalking/dunce
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rascalking/dunce" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frascalking%2Fdunce", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frascalking%2Fdunce'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e7f66d780a0aa53b9b29e067c1c65555b4e2f648
[INFO] checking rascalking/dunce against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frascalking%2Fdunce" "/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/rascalking/dunce on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rascalking/dunce
[INFO] finished tweaking git repo https://github.com/rascalking/dunce
[INFO] tweaked toml for git repo https://github.com/rascalking/dunce written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/rascalking/dunce already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d37f5b5ce07480adeb1fd3370ba885462476924e5cf7b33ac352fbade2ffc2fa
[INFO] running `Command { std: "docker" "start" "-a" "d37f5b5ce07480adeb1fd3370ba885462476924e5cf7b33ac352fbade2ffc2fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d37f5b5ce07480adeb1fd3370ba885462476924e5cf7b33ac352fbade2ffc2fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d37f5b5ce07480adeb1fd3370ba885462476924e5cf7b33ac352fbade2ffc2fa", kill_on_drop: false }`
[INFO] [stdout] d37f5b5ce07480adeb1fd3370ba885462476924e5cf7b33ac352fbade2ffc2fa
[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=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc58ef3681f01364b9680a4ca90972d616f55f4a5000f543ab07cfd8176ad4ed
[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" "cc58ef3681f01364b9680a4ca90972d616f55f4a5000f543ab07cfd8176ad4ed", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking dunce v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/packet.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut packet = Packet { buf };
[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: associated function is never used: `set_authoritative`
[INFO] [stdout]    --> src/packet.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 |     fn set_authoritative(&mut self, is_authoritative: bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_truncated`
[INFO] [stdout]    --> src/packet.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn set_truncated(&mut self, is_truncated: bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_recursion_available`
[INFO] [stdout]    --> src/packet.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 |     fn set_recursion_available(&mut self, is_recursion_available: bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rcode`
[INFO] [stdout]    --> src/packet.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 |     fn rcode(&self) -> u8 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_rcode`
[INFO] [stdout]    --> src/packet.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn set_rcode(&mut self, rcode: u8) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_ancount`
[INFO] [stdout]    --> src/packet.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn set_ancount(&mut self, ancount: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_nscount`
[INFO] [stdout]    --> src/packet.rs:223:8
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn set_nscount(&mut self, nscount: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_arcount`
[INFO] [stdout]    --> src/packet.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 |     fn set_arcount(&mut self, arcount: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/packet.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         let mut packet = Packet { buf };
[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: associated function is never used: `set_authoritative`
[INFO] [stdout]    --> src/packet.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 |     fn set_authoritative(&mut self, is_authoritative: bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_truncated`
[INFO] [stdout]    --> src/packet.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn set_truncated(&mut self, is_truncated: bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_recursion_available`
[INFO] [stdout]    --> src/packet.rs:181:8
[INFO] [stdout]     |
[INFO] [stdout] 181 |     fn set_recursion_available(&mut self, is_recursion_available: bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rcode`
[INFO] [stdout]    --> src/packet.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 |     fn rcode(&self) -> u8 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_rcode`
[INFO] [stdout]    --> src/packet.rs:196:8
[INFO] [stdout]     |
[INFO] [stdout] 196 |     fn set_rcode(&mut self, rcode: u8) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_ancount`
[INFO] [stdout]    --> src/packet.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn set_ancount(&mut self, ancount: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_nscount`
[INFO] [stdout]    --> src/packet.rs:223:8
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn set_nscount(&mut self, nscount: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_arcount`
[INFO] [stdout]    --> src/packet.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 |     fn set_arcount(&mut self, arcount: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddr`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stdout]   |                ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut query = Packet::new_query("www.icann.org");
[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: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut query = Packet::new_query("www.icann.org");
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.05s
[INFO] running `Command { std: "docker" "inspect" "cc58ef3681f01364b9680a4ca90972d616f55f4a5000f543ab07cfd8176ad4ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc58ef3681f01364b9680a4ca90972d616f55f4a5000f543ab07cfd8176ad4ed", kill_on_drop: false }`
[INFO] [stdout] cc58ef3681f01364b9680a4ca90972d616f55f4a5000f543ab07cfd8176ad4ed