[INFO] updating cached repository https://github.com/Skalldihor/rusference
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] 8755fd74853580736f2082f0bece62f794a49bb1
[INFO] testing Skalldihor/rusference against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FSkalldihor%2Frusference" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Skalldihor/rusference on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Skalldihor/rusference
[INFO] finished tweaking git repo https://github.com/Skalldihor/rusference
[INFO] tweaked toml for git repo https://github.com/Skalldihor/rusference written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Skalldihor/rusference already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 29e045ce3f50753243a892443ce0ac2ca42bd3f9e8f497580bd903077d2ff36e
[INFO] running `"docker" "start" "-a" "29e045ce3f50753243a892443ce0ac2ca42bd3f9e8f497580bd903077d2ff36e"`
[INFO] [stderr]    Compiling serde v1.0.24
[INFO] [stderr]    Compiling serde_derive_internals v0.18.0
[INFO] [stderr]    Compiling serde_derive v1.0.24
[INFO] [stderr]    Compiling bincode v0.9.2
[INFO] [stderr]    Compiling Rusference v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/lib/common.rs:9:7
[INFO] [stderr]   |
[INFO] [stderr] 9 |   let mut socket;
[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/lib/common.rs:25:7
[INFO] [stderr]    |
[INFO] [stderr] 25 |   let mut data;
[INFO] [stderr]    |       ----^^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error: couldn't read src/palestrante/main.rs: No such file or directory (os error 2)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `Rusference`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> src/aluno/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SocketAddr`
[INFO] [stderr]  --> src/aluno/main.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stderr]   |                ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/aluno/screen.rs:3:6
[INFO] [stderr]   |
[INFO] [stderr] 3 |     use std;
[INFO] [stderr]   |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `name` is assigned to, but never used
[INFO] [stderr]   --> src/aluno/main.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut name: String;
[INFO] [stderr]    |             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_name` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `name` is never read
[INFO] [stderr]   --> src/aluno/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     name = screen::menu::get_name();
[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: `muiltcast_socket`
[INFO] [stderr]   --> src/aluno/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let muiltcast_socket = UdpSocket::bind(multicast_addr).expect("couldn't bind to address");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_muiltcast_socket`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/aluno/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut name: String;
[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/aluno/main.rs:41:29
[INFO] [stderr]    |
[INFO] [stderr] 41 |                         let mut message = screen::menu::choiche();
[INFO] [stderr]    |                             ----^^^^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/aluno/screen.rs:29:3
[INFO] [stderr]    |
[INFO] [stderr] 29 |         io::stdin().read_line(&mut input);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/monitor/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/monitor/screen.rs:3:6
[INFO] [stderr]   |
[INFO] [stderr] 3 |     use std;
[INFO] [stderr]   |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]   --> src/monitor/main.rs:73:3
[INFO] [stderr]    |
[INFO] [stderr] 73 |   while true {
[INFO] [stderr]    |   ^^^^^^^^^^ help: use `loop`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(while_true)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `name` is assigned to, but never used
[INFO] [stderr]   --> src/monitor/main.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut name: String;
[INFO] [stderr]    |             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_name` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `resposta`
[INFO] [stderr]   --> src/monitor/main.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut resposta: String;
[INFO] [stderr]    |             ^^^^^^^^ help: consider prefixing with an underscore: `_resposta`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `name` is never read
[INFO] [stderr]   --> src/monitor/main.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     name = screen::menu::get_name();
[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: `send_multicast`
[INFO] [stderr]   --> src/monitor/main.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let send_multicast = net::SocketAddrV4::new(multicast_ip, 35255);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_send_multicast`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handle`
[INFO] [stderr]   --> src/monitor/main.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let handle = thread::spawn(move || {
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_handle`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/monitor/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut name: String;
[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/monitor/main.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let mut data;
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Person`
[INFO] [stderr]   --> src/monitor/main.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct Person {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Message`
[INFO] [stderr]   --> src/monitor/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct Message {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/monitor/screen.rs:29:3
[INFO] [stderr]    |
[INFO] [stderr] 29 |         io::stdin().read_line(&mut input);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "29e045ce3f50753243a892443ce0ac2ca42bd3f9e8f497580bd903077d2ff36e"`
[INFO] running `"docker" "rm" "-f" "29e045ce3f50753243a892443ce0ac2ca42bd3f9e8f497580bd903077d2ff36e"`
[INFO] [stdout] 29e045ce3f50753243a892443ce0ac2ca42bd3f9e8f497580bd903077d2ff36e