Oct 12 09:51:26.504 INFO checking zerovolts/rust-chat against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 09:51:26.505 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-4/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 12 09:51:26.962 INFO blam! da97f30f309e86be173eb5ea4bb2c60c427df45d57808d6629b2f27923072a3f
Oct 12 09:51:26.963 INFO running `"docker" "start" "-a" "da97f30f309e86be173eb5ea4bb2c60c427df45d57808d6629b2f27923072a3f"`
Oct 12 09:51:28.652 INFO kablam! usermod: no changes
Oct 12 09:51:28.712 INFO kablam!     Checking rust-chat v0.1.0 (/source)
Oct 12 09:51:28.952 INFO kablam! warning: unused import: `Write`
Oct 12 09:51:28.952 INFO kablam!  --> src/server.rs:3:21
Oct 12 09:51:28.952 INFO kablam!   |
Oct 12 09:51:28.952 INFO kablam! 3 | use std::io::{Read, Write};
Oct 12 09:51:28.952 INFO kablam!   |                     ^^^^^
Oct 12 09:51:28.952 INFO kablam!   |
Oct 12 09:51:28.952 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 09:51:28.952 INFO kablam! 
Oct 12 09:51:28.952 INFO kablam! warning: unused import: `TcpListener`
Oct 12 09:51:28.952 INFO kablam!  --> src/client.rs:1:16
Oct 12 09:51:28.952 INFO kablam!   |
Oct 12 09:51:28.952 INFO kablam! 1 | use std::net::{TcpListener, TcpStream};
Oct 12 09:51:28.952 INFO kablam!   |                ^^^^^^^^^^^
Oct 12 09:51:28.952 INFO kablam! 
Oct 12 09:51:28.952 INFO kablam! warning: unused imports: `Arc`, `Mutex`
Oct 12 09:51:28.952 INFO kablam!  --> src/client.rs:2:17
Oct 12 09:51:28.952 INFO kablam!   |
Oct 12 09:51:28.952 INFO kablam! 2 | use std::sync::{Arc, Mutex};
Oct 12 09:51:28.952 INFO kablam!   |                 ^^^  ^^^^^
Oct 12 09:51:28.952 INFO kablam! 
Oct 12 09:51:28.952 INFO kablam! warning: unused import: `Read`
Oct 12 09:51:28.952 INFO kablam!  --> src/client.rs:3:15
Oct 12 09:51:28.953 INFO kablam!   |
Oct 12 09:51:28.953 INFO kablam! 3 | use std::io::{Read, Write};
Oct 12 09:51:28.953 INFO kablam!   |               ^^^^
Oct 12 09:51:28.953 INFO kablam! 
Oct 12 09:51:28.953 INFO kablam! warning: unused imports: `thread`, `time`
Oct 12 09:51:28.953 INFO kablam!  --> src/client.rs:4:11
Oct 12 09:51:28.953 INFO kablam!   |
Oct 12 09:51:28.953 INFO kablam! 4 | use std::{thread, time};
Oct 12 09:51:28.953 INFO kablam!   |           ^^^^^^  ^^^^
Oct 12 09:51:28.953 INFO kablam! 
Oct 12 09:51:28.972 INFO kablam! warning: unused import: `Write`
Oct 12 09:51:28.972 INFO kablam!  --> src/server.rs:3:21
Oct 12 09:51:28.972 INFO kablam!   |
Oct 12 09:51:28.972 INFO kablam! 3 | use std::io::{Read, Write};
Oct 12 09:51:28.972 INFO kablam!   |                     ^^^^^
Oct 12 09:51:28.972 INFO kablam!   |
Oct 12 09:51:28.972 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 09:51:28.972 INFO kablam! 
Oct 12 09:51:28.972 INFO kablam! warning: unused import: `TcpListener`
Oct 12 09:51:28.972 INFO kablam!  --> src/client.rs:1:16
Oct 12 09:51:28.972 INFO kablam!   |
Oct 12 09:51:28.972 INFO kablam! 1 | use std::net::{TcpListener, TcpStream};
Oct 12 09:51:28.972 INFO kablam!   |                ^^^^^^^^^^^
Oct 12 09:51:28.972 INFO kablam! 
Oct 12 09:51:28.972 INFO kablam! warning: unused imports: `Arc`, `Mutex`
Oct 12 09:51:28.972 INFO kablam!  --> src/client.rs:2:17
Oct 12 09:51:28.972 INFO kablam!   |
Oct 12 09:51:28.972 INFO kablam! 2 | use std::sync::{Arc, Mutex};
Oct 12 09:51:28.972 INFO kablam!   |                 ^^^  ^^^^^
Oct 12 09:51:28.972 INFO kablam! 
Oct 12 09:51:28.972 INFO kablam! warning: unused import: `Read`
Oct 12 09:51:28.972 INFO kablam!  --> src/client.rs:3:15
Oct 12 09:51:28.973 INFO kablam!   |
Oct 12 09:51:28.973 INFO kablam! 3 | use std::io::{Read, Write};
Oct 12 09:51:28.973 INFO kablam!   |               ^^^^
Oct 12 09:51:28.973 INFO kablam! 
Oct 12 09:51:28.973 INFO kablam! warning: unused imports: `thread`, `time`
Oct 12 09:51:28.973 INFO kablam!  --> src/client.rs:4:11
Oct 12 09:51:28.973 INFO kablam!   |
Oct 12 09:51:28.973 INFO kablam! 4 | use std::{thread, time};
Oct 12 09:51:28.973 INFO kablam!   |           ^^^^^^  ^^^^
Oct 12 09:51:28.973 INFO kablam! 
Oct 12 09:51:28.996 INFO kablam! warning: unused variable: `e`
Oct 12 09:51:28.996 INFO kablam!   --> src/server.rs:32:21
Oct 12 09:51:28.996 INFO kablam!    |
Oct 12 09:51:28.996 INFO kablam! 32 |                 Err(e) => ()
Oct 12 09:51:28.996 INFO kablam!    |                     ^ help: consider using `_e` instead
Oct 12 09:51:28.996 INFO kablam!    |
Oct 12 09:51:28.996 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 09:51:28.996 INFO kablam! 
Oct 12 09:51:28.996 INFO kablam! warning: variable does not need to be mutable
Oct 12 09:51:28.996 INFO kablam!   --> src/server.rs:37:22
Oct 12 09:51:28.996 INFO kablam!    |
Oct 12 09:51:28.996 INFO kablam! 37 |     fn handle_client(mut stream: Arc<Mutex<TcpStream>>) {
Oct 12 09:51:28.996 INFO kablam!    |                      ----^^^^^^
Oct 12 09:51:28.996 INFO kablam!    |                      |
Oct 12 09:51:28.996 INFO kablam!    |                      help: remove this `mut`
Oct 12 09:51:28.996 INFO kablam!    |
Oct 12 09:51:28.996 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 09:51:28.996 INFO kablam! 
Oct 12 09:51:29.004 INFO kablam! warning: field is never used: `address`
Oct 12 09:51:29.004 INFO kablam!  --> src/server.rs:6:5
Oct 12 09:51:29.004 INFO kablam!   |
Oct 12 09:51:29.004 INFO kablam! 6 |     address: String,
Oct 12 09:51:29.004 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 12 09:51:29.004 INFO kablam!   |
Oct 12 09:51:29.004 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 09:51:29.004 INFO kablam! 
Oct 12 09:51:29.004 INFO kablam! warning: field is never used: `messages`
Oct 12 09:51:29.004 INFO kablam!  --> src/server.rs:9:5
Oct 12 09:51:29.004 INFO kablam!   |
Oct 12 09:51:29.004 INFO kablam! 9 |     messages: Vec<String>
Oct 12 09:51:29.004 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^
Oct 12 09:51:29.004 INFO kablam! 
Oct 12 09:51:29.004 INFO kablam! warning: field is never used: `address`
Oct 12 09:51:29.004 INFO kablam!  --> src/client.rs:7:5
Oct 12 09:51:29.004 INFO kablam!   |
Oct 12 09:51:29.004 INFO kablam! 7 |     address: String,
Oct 12 09:51:29.004 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 12 09:51:29.004 INFO kablam! 
Oct 12 09:51:29.008 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 12 09:51:29.008 INFO kablam!   --> src/server.rs:39:9
Oct 12 09:51:29.008 INFO kablam!    |
Oct 12 09:51:29.008 INFO kablam! 39 |         stream.lock().unwrap().read_to_string(&mut buffer);
Oct 12 09:51:29.008 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 09:51:29.008 INFO kablam!    |
Oct 12 09:51:29.008 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 09:51:29.008 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 12 09:51:29.008 INFO kablam! 
Oct 12 09:51:29.008 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 12 09:51:29.008 INFO kablam!   --> src/client.rs:25:9
Oct 12 09:51:29.008 INFO kablam!    |
Oct 12 09:51:29.008 INFO kablam! 25 |         self.stream.write(String::from(message).as_bytes());
Oct 12 09:51:29.008 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 09:51:29.008 INFO kablam!    |
Oct 12 09:51:29.008 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 12 09:51:29.008 INFO kablam! 
Oct 12 09:51:29.048 INFO kablam! warning: unused variable: `e`
Oct 12 09:51:29.048 INFO kablam!   --> src/server.rs:32:21
Oct 12 09:51:29.048 INFO kablam!    |
Oct 12 09:51:29.048 INFO kablam! 32 |                 Err(e) => ()
Oct 12 09:51:29.048 INFO kablam!    |                     ^ help: consider using `_e` instead
Oct 12 09:51:29.048 INFO kablam!    |
Oct 12 09:51:29.048 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 09:51:29.048 INFO kablam! 
Oct 12 09:51:29.056 INFO kablam! warning: variable does not need to be mutable
Oct 12 09:51:29.056 INFO kablam!   --> src/server.rs:37:22
Oct 12 09:51:29.056 INFO kablam!    |
Oct 12 09:51:29.056 INFO kablam! 37 |     fn handle_client(mut stream: Arc<Mutex<TcpStream>>) {
Oct 12 09:51:29.056 INFO kablam!    |                      ----^^^^^^
Oct 12 09:51:29.056 INFO kablam!    |                      |
Oct 12 09:51:29.056 INFO kablam!    |                      help: remove this `mut`
Oct 12 09:51:29.056 INFO kablam!    |
Oct 12 09:51:29.056 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 09:51:29.056 INFO kablam! 
Oct 12 09:51:29.056 INFO kablam! warning: field is never used: `address`
Oct 12 09:51:29.056 INFO kablam!  --> src/server.rs:6:5
Oct 12 09:51:29.056 INFO kablam!   |
Oct 12 09:51:29.056 INFO kablam! 6 |     address: String,
Oct 12 09:51:29.056 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 12 09:51:29.056 INFO kablam!   |
Oct 12 09:51:29.056 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 09:51:29.056 INFO kablam! 
Oct 12 09:51:29.056 INFO kablam! warning: field is never used: `messages`
Oct 12 09:51:29.056 INFO kablam!  --> src/server.rs:9:5
Oct 12 09:51:29.056 INFO kablam!   |
Oct 12 09:51:29.056 INFO kablam! 9 |     messages: Vec<String>
Oct 12 09:51:29.057 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^
Oct 12 09:51:29.057 INFO kablam! 
Oct 12 09:51:29.057 INFO kablam! warning: field is never used: `address`
Oct 12 09:51:29.057 INFO kablam!  --> src/client.rs:7:5
Oct 12 09:51:29.057 INFO kablam!   |
Oct 12 09:51:29.057 INFO kablam! 7 |     address: String,
Oct 12 09:51:29.057 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 12 09:51:29.057 INFO kablam! 
Oct 12 09:51:29.060 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 12 09:51:29.060 INFO kablam!   --> src/server.rs:39:9
Oct 12 09:51:29.060 INFO kablam!    |
Oct 12 09:51:29.060 INFO kablam! 39 |         stream.lock().unwrap().read_to_string(&mut buffer);
Oct 12 09:51:29.060 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 09:51:29.060 INFO kablam!    |
Oct 12 09:51:29.060 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 09:51:29.060 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 12 09:51:29.060 INFO kablam! 
Oct 12 09:51:29.064 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 12 09:51:29.064 INFO kablam!   --> src/client.rs:25:9
Oct 12 09:51:29.064 INFO kablam!    |
Oct 12 09:51:29.064 INFO kablam! 25 |         self.stream.write(String::from(message).as_bytes());
Oct 12 09:51:29.064 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 09:51:29.064 INFO kablam!    |
Oct 12 09:51:29.064 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 12 09:51:29.064 INFO kablam! 
Oct 12 09:51:29.096 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Oct 12 09:51:29.104 INFO kablam! su: No module specific data is present
Oct 12 09:51:30.005 INFO running `"docker" "rm" "-f" "da97f30f309e86be173eb5ea4bb2c60c427df45d57808d6629b2f27923072a3f"`
Oct 12 09:51:30.369 INFO blam! da97f30f309e86be173eb5ea4bb2c60c427df45d57808d6629b2f27923072a3f