Sep 10 14:01:41.653 INFO checking nexrs-0.1.0 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 14:01:41.653 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 14:01:41.653 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/try#3a2610c2a16575649896925631bf8cec4f4b1961:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 14:01:41.853 INFO blam! 3c97136942ad977972c9c9e4d0e02dd79996587501cf7fd04ea0638ebd70e2b4
Sep 10 14:01:41.855 INFO running `"docker" "start" "-a" "3c97136942ad977972c9c9e4d0e02dd79996587501cf7fd04ea0638ebd70e2b4"`
Sep 10 14:01:42.569 INFO kablam! usermod: no changes
Sep 10 14:01:42.598 INFO kablam!     Checking nexrs v0.1.0 (file:///source)
Sep 10 14:01:42.776 INFO kablam! warning: unused import: `std::error::Error`
Sep 10 14:01:42.776 INFO kablam!  --> src/discovery.rs:2:5
Sep 10 14:01:42.776 INFO kablam!   |
Sep 10 14:01:42.776 INFO kablam! 2 | use std::error::Error;
Sep 10 14:01:42.776 INFO kablam!   |     ^^^^^^^^^^^^^^^^^
Sep 10 14:01:42.776 INFO kablam!   |
Sep 10 14:01:42.776 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 14:01:42.776 INFO kablam! 
Sep 10 14:01:42.776 INFO kablam! warning: unused import: `std::io::Result as IoResult`
Sep 10 14:01:42.776 INFO kablam!  --> src/discovery.rs:6:5
Sep 10 14:01:42.776 INFO kablam!   |
Sep 10 14:01:42.776 INFO kablam! 6 | use std::io::Result as IoResult;
Sep 10 14:01:42.776 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 14:01:42.776 INFO kablam! 
Sep 10 14:01:42.776 INFO kablam! warning: unused import: `discovery::*`
Sep 10 14:01:42.776 INFO kablam!  --> src/main.rs:4:5
Sep 10 14:01:42.776 INFO kablam!   |
Sep 10 14:01:42.776 INFO kablam! 4 | use discovery::*;
Sep 10 14:01:42.776 INFO kablam!   |     ^^^^^^^^^^^^
Sep 10 14:01:42.777 INFO kablam! 
Sep 10 14:01:42.777 INFO kablam! warning: unused import: `SocketAddr`
Sep 10 14:01:42.777 INFO kablam!  --> src/main.rs:5:16
Sep 10 14:01:42.777 INFO kablam!   |
Sep 10 14:01:42.777 INFO kablam! 5 | use std::net::{SocketAddr};
Sep 10 14:01:42.777 INFO kablam!   |                ^^^^^^^^^^
Sep 10 14:01:42.777 INFO kablam! 
Sep 10 14:01:42.793 INFO kablam! warning: unused import: `std::error::Error`
Sep 10 14:01:42.793 INFO kablam!  --> src/discovery.rs:2:5
Sep 10 14:01:42.793 INFO kablam!   |
Sep 10 14:01:42.793 INFO kablam! 2 | use std::error::Error;
Sep 10 14:01:42.793 INFO kablam!   |     ^^^^^^^^^^^^^^^^^
Sep 10 14:01:42.793 INFO kablam!   |
Sep 10 14:01:42.793 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 14:01:42.793 INFO kablam! 
Sep 10 14:01:42.793 INFO kablam! warning: unused import: `std::io::Result as IoResult`
Sep 10 14:01:42.793 INFO kablam!  --> src/discovery.rs:6:5
Sep 10 14:01:42.793 INFO kablam!   |
Sep 10 14:01:42.793 INFO kablam! 6 | use std::io::Result as IoResult;
Sep 10 14:01:42.793 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 14:01:42.793 INFO kablam! 
Sep 10 14:01:42.793 INFO kablam! warning: unused import: `discovery::*`
Sep 10 14:01:42.793 INFO kablam!  --> src/main.rs:4:5
Sep 10 14:01:42.793 INFO kablam!   |
Sep 10 14:01:42.793 INFO kablam! 4 | use discovery::*;
Sep 10 14:01:42.793 INFO kablam!   |     ^^^^^^^^^^^^
Sep 10 14:01:42.793 INFO kablam! 
Sep 10 14:01:42.794 INFO kablam! warning: unused import: `SocketAddr`
Sep 10 14:01:42.794 INFO kablam!  --> src/main.rs:5:16
Sep 10 14:01:42.794 INFO kablam!   |
Sep 10 14:01:42.794 INFO kablam! 5 | use std::net::{SocketAddr};
Sep 10 14:01:42.794 INFO kablam!   |                ^^^^^^^^^^
Sep 10 14:01:42.794 INFO kablam! 
Sep 10 14:01:42.840 INFO kablam! warning: unused variable: `buf`
Sep 10 14:01:42.840 INFO kablam!   --> src/discovery.rs:86:17
Sep 10 14:01:42.840 INFO kablam!    |
Sep 10 14:01:42.840 INFO kablam! 86 |         let mut buf: [u8; 32] = [0; 32];
Sep 10 14:01:42.840 INFO kablam!    |                 ^^^ help: consider using `_buf` instead
Sep 10 14:01:42.840 INFO kablam!    |
Sep 10 14:01:42.840 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 10 14:01:42.840 INFO kablam! 
Sep 10 14:01:42.846 INFO kablam! warning: variable does not need to be mutable
Sep 10 14:01:42.846 INFO kablam!   --> src/discovery.rs:16:9
Sep 10 14:01:42.846 INFO kablam!    |
Sep 10 14:01:42.846 INFO kablam! 16 |     let mut cmd_if = Command::new("ifconfig")
Sep 10 14:01:42.846 INFO kablam!    |         ----^^^^^^
Sep 10 14:01:42.846 INFO kablam!    |         |
Sep 10 14:01:42.846 INFO kablam!    |         help: remove this `mut`
Sep 10 14:01:42.846 INFO kablam!    |
Sep 10 14:01:42.846 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 10 14:01:42.846 INFO kablam! 
Sep 10 14:01:42.846 INFO kablam! warning: variable does not need to be mutable
Sep 10 14:01:42.846 INFO kablam!   --> src/discovery.rs:36:9
Sep 10 14:01:42.846 INFO kablam!    |
Sep 10 14:01:42.846 INFO kablam! 36 |     let mut addr = addr_iter
Sep 10 14:01:42.846 INFO kablam!    |         ----^^^^
Sep 10 14:01:42.846 INFO kablam!    |         |
Sep 10 14:01:42.846 INFO kablam!    |         help: remove this `mut`
Sep 10 14:01:42.846 INFO kablam! 
Sep 10 14:01:42.851 INFO kablam! warning: variable does not need to be mutable
Sep 10 14:01:42.851 INFO kablam!   --> src/discovery.rs:86:13
Sep 10 14:01:42.851 INFO kablam!    |
Sep 10 14:01:42.851 INFO kablam! 86 |         let mut buf: [u8; 32] = [0; 32];
Sep 10 14:01:42.851 INFO kablam!    |             ----^^^
Sep 10 14:01:42.851 INFO kablam!    |             |
Sep 10 14:01:42.851 INFO kablam!    |             help: remove this `mut`
Sep 10 14:01:42.851 INFO kablam! 
Sep 10 14:01:42.851 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 10 14:01:42.851 INFO kablam!   --> src/discovery.rs:87:9
Sep 10 14:01:42.851 INFO kablam!    |
Sep 10 14:01:42.851 INFO kablam! 87 |         stream.set_write_timeout(Some(Duration::new(3, 0)));
Sep 10 14:01:42.851 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 14:01:42.851 INFO kablam!    |
Sep 10 14:01:42.851 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 10 14:01:42.851 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Sep 10 14:01:42.851 INFO kablam! 
Sep 10 14:01:42.852 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 10 14:01:42.852 INFO kablam!   --> src/discovery.rs:88:9
Sep 10 14:01:42.852 INFO kablam!    |
Sep 10 14:01:42.852 INFO kablam! 88 |         stream.set_read_timeout(Some(Duration::new(3, 0)));
Sep 10 14:01:42.852 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 14:01:42.852 INFO kablam!    |
Sep 10 14:01:42.852 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Sep 10 14:01:42.852 INFO kablam! 
Sep 10 14:01:42.863 INFO kablam! warning: unused variable: `buf`
Sep 10 14:01:42.863 INFO kablam!   --> src/discovery.rs:86:17
Sep 10 14:01:42.863 INFO kablam!    |
Sep 10 14:01:42.863 INFO kablam! 86 |         let mut buf: [u8; 32] = [0; 32];
Sep 10 14:01:42.863 INFO kablam!    |                 ^^^ help: consider using `_buf` instead
Sep 10 14:01:42.863 INFO kablam!    |
Sep 10 14:01:42.863 INFO kablam!    = note: #[warn(unused_variables)] on by default
Sep 10 14:01:42.863 INFO kablam! 
Sep 10 14:01:42.869 INFO kablam! warning: variable does not need to be mutable
Sep 10 14:01:42.869 INFO kablam!   --> src/discovery.rs:16:9
Sep 10 14:01:42.869 INFO kablam!    |
Sep 10 14:01:42.869 INFO kablam! 16 |     let mut cmd_if = Command::new("ifconfig")
Sep 10 14:01:42.869 INFO kablam!    |         ----^^^^^^
Sep 10 14:01:42.869 INFO kablam!    |         |
Sep 10 14:01:42.869 INFO kablam!    |         help: remove this `mut`
Sep 10 14:01:42.869 INFO kablam!    |
Sep 10 14:01:42.869 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 10 14:01:42.869 INFO kablam! 
Sep 10 14:01:42.869 INFO kablam! warning: variable does not need to be mutable
Sep 10 14:01:42.869 INFO kablam!   --> src/discovery.rs:36:9
Sep 10 14:01:42.869 INFO kablam!    |
Sep 10 14:01:42.869 INFO kablam! 36 |     let mut addr = addr_iter
Sep 10 14:01:42.869 INFO kablam!    |         ----^^^^
Sep 10 14:01:42.869 INFO kablam!    |         |
Sep 10 14:01:42.869 INFO kablam!    |         help: remove this `mut`
Sep 10 14:01:42.869 INFO kablam! 
Sep 10 14:01:42.873 INFO kablam! warning: variable does not need to be mutable
Sep 10 14:01:42.873 INFO kablam!   --> src/discovery.rs:86:13
Sep 10 14:01:42.873 INFO kablam!    |
Sep 10 14:01:42.873 INFO kablam! 86 |         let mut buf: [u8; 32] = [0; 32];
Sep 10 14:01:42.873 INFO kablam!    |             ----^^^
Sep 10 14:01:42.873 INFO kablam!    |             |
Sep 10 14:01:42.873 INFO kablam!    |             help: remove this `mut`
Sep 10 14:01:42.873 INFO kablam! 
Sep 10 14:01:42.874 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 10 14:01:42.874 INFO kablam!   --> src/discovery.rs:87:9
Sep 10 14:01:42.874 INFO kablam!    |
Sep 10 14:01:42.874 INFO kablam! 87 |         stream.set_write_timeout(Some(Duration::new(3, 0)));
Sep 10 14:01:42.874 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 14:01:42.874 INFO kablam!    |
Sep 10 14:01:42.874 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Sep 10 14:01:42.874 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Sep 10 14:01:42.874 INFO kablam! 
Sep 10 14:01:42.874 INFO kablam! warning: unused `std::result::Result` which must be used
Sep 10 14:01:42.874 INFO kablam!   --> src/discovery.rs:88:9
Sep 10 14:01:42.874 INFO kablam!    |
Sep 10 14:01:42.874 INFO kablam! 88 |         stream.set_read_timeout(Some(Duration::new(3, 0)));
Sep 10 14:01:42.874 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 14:01:42.874 INFO kablam!    |
Sep 10 14:01:42.874 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Sep 10 14:01:42.874 INFO kablam! 
Sep 10 14:01:42.883 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
Sep 10 14:01:42.885 INFO kablam! su: No module specific data is present
Sep 10 14:01:43.458 INFO running `"docker" "rm" "-f" "3c97136942ad977972c9c9e4d0e02dd79996587501cf7fd04ea0638ebd70e2b4"`
Sep 10 14:01:43.519 INFO blam! 3c97136942ad977972c9c9e4d0e02dd79996587501cf7fd04ea0638ebd70e2b4