[INFO] updating cached repository https://github.com/rascalking/dunce
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e7f66d780a0aa53b9b29e067c1c65555b4e2f648
[INFO] checking rascalking/dunce against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frascalking%2Fdunce" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rascalking/dunce on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-6/source/Cargo.toml
[INFO] crate git repo https://github.com/rascalking/dunce already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 775e82fc41bf8f709397e837cf8424ad1942b2d337e96215b1c71abd400ce218
[INFO] running `"docker" "start" "-a" "775e82fc41bf8f709397e837cf8424ad1942b2d337e96215b1c71abd400ce218"`
[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] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/packet.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let mut packet = Packet { buf };
[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: method is never used: `set_authoritative`
[INFO] [stderr]    --> src/packet.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     fn set_authoritative(&mut self, is_authoritative: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_truncated`
[INFO] [stderr]    --> src/packet.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn set_truncated(&mut self, is_truncated: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_recursion_available`
[INFO] [stderr]    --> src/packet.rs:181:5
[INFO] [stderr]     |
[INFO] [stderr] 181 |     fn set_recursion_available(&mut self, is_recursion_available: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rcode`
[INFO] [stderr]    --> src/packet.rs:192:5
[INFO] [stderr]     |
[INFO] [stderr] 192 |     fn rcode(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_rcode`
[INFO] [stderr]    --> src/packet.rs:196:5
[INFO] [stderr]     |
[INFO] [stderr] 196 |     fn set_rcode(&mut self, rcode: u8) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_ancount`
[INFO] [stderr]    --> src/packet.rs:215:5
[INFO] [stderr]     |
[INFO] [stderr] 215 |     fn set_ancount(&mut self, ancount: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_nscount`
[INFO] [stderr]    --> src/packet.rs:223:5
[INFO] [stderr]     |
[INFO] [stderr] 223 |     fn set_nscount(&mut self, nscount: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_arcount`
[INFO] [stderr]    --> src/packet.rs:231:5
[INFO] [stderr]     |
[INFO] [stderr] 231 |     fn set_arcount(&mut self, arcount: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/packet.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let mut packet = Packet { buf };
[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: method is never used: `set_authoritative`
[INFO] [stderr]    --> src/packet.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     fn set_authoritative(&mut self, is_authoritative: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_truncated`
[INFO] [stderr]    --> src/packet.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn set_truncated(&mut self, is_truncated: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_recursion_available`
[INFO] [stderr]    --> src/packet.rs:181:5
[INFO] [stderr]     |
[INFO] [stderr] 181 |     fn set_recursion_available(&mut self, is_recursion_available: bool) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rcode`
[INFO] [stderr]    --> src/packet.rs:192:5
[INFO] [stderr]     |
[INFO] [stderr] 192 |     fn rcode(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_rcode`
[INFO] [stderr]    --> src/packet.rs:196:5
[INFO] [stderr]     |
[INFO] [stderr] 196 |     fn set_rcode(&mut self, rcode: u8) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_ancount`
[INFO] [stderr]    --> src/packet.rs:215:5
[INFO] [stderr]     |
[INFO] [stderr] 215 |     fn set_ancount(&mut self, ancount: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_nscount`
[INFO] [stderr]    --> src/packet.rs:223:5
[INFO] [stderr]     |
[INFO] [stderr] 223 |     fn set_nscount(&mut self, nscount: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_arcount`
[INFO] [stderr]    --> src/packet.rs:231:5
[INFO] [stderr]     |
[INFO] [stderr] 231 |     fn set_arcount(&mut self, arcount: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SocketAddr`
[INFO] [stderr]  --> src/main.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stderr]   |                ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SocketAddr`
[INFO] [stderr]  --> src/main.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stderr]   |                ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut query = Packet::new_query("www.icann.org");
[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: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut query = Packet::new_query("www.icann.org");
[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]     Finished dev [unoptimized + debuginfo] target(s) in 5.42s
[INFO] running `"docker" "inspect" "775e82fc41bf8f709397e837cf8424ad1942b2d337e96215b1c71abd400ce218"`
[INFO] running `"docker" "rm" "-f" "775e82fc41bf8f709397e837cf8424ad1942b2d337e96215b1c71abd400ce218"`
[INFO] [stdout] 775e82fc41bf8f709397e837cf8424ad1942b2d337e96215b1c71abd400ce218