Oct 13 11:37:25.976 INFO checking nexrs-0.1.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 11:37:25.976 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-5/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-5/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 13 11:37:26.156 INFO blam! 1351498eead81ed223dc8b3a410d5f0e689f32f97d753442b838c06607654470
Oct 13 11:37:26.156 INFO running `"docker" "start" "-a" "1351498eead81ed223dc8b3a410d5f0e689f32f97d753442b838c06607654470"`
Oct 13 11:37:26.772 INFO kablam! usermod: no changes
Oct 13 11:37:26.800 INFO kablam!     Checking nexrs v0.1.0 (/source)
Oct 13 11:37:27.336 INFO kablam! warning: unused import: `std::error::Error`
Oct 13 11:37:27.337 INFO kablam!  --> src/discovery.rs:2:5
Oct 13 11:37:27.337 INFO kablam!   |
Oct 13 11:37:27.337 INFO kablam! 2 | use std::error::Error;
Oct 13 11:37:27.338 INFO kablam!   |     ^^^^^^^^^^^^^^^^^
Oct 13 11:37:27.338 INFO kablam!   |
Oct 13 11:37:27.338 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 11:37:27.338 INFO kablam! 
Oct 13 11:37:27.339 INFO kablam! warning: unused import: `std::io::Result as IoResult`
Oct 13 11:37:27.339 INFO kablam!  --> src/discovery.rs:6:5
Oct 13 11:37:27.339 INFO kablam!   |
Oct 13 11:37:27.339 INFO kablam! 6 | use std::io::Result as IoResult;
Oct 13 11:37:27.340 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 11:37:27.340 INFO kablam! 
Oct 13 11:37:27.340 INFO kablam! warning: unused import: `discovery::*`
Oct 13 11:37:27.340 INFO kablam!  --> src/main.rs:4:5
Oct 13 11:37:27.341 INFO kablam!   |
Oct 13 11:37:27.341 INFO kablam! 4 | use discovery::*;
Oct 13 11:37:27.341 INFO kablam!   |     ^^^^^^^^^^^^
Oct 13 11:37:27.342 INFO kablam! 
Oct 13 11:37:27.342 INFO kablam! warning: unused import: `SocketAddr`
Oct 13 11:37:27.342 INFO kablam!  --> src/main.rs:5:16
Oct 13 11:37:27.342 INFO kablam!   |
Oct 13 11:37:27.343 INFO kablam! 5 | use std::net::{SocketAddr};
Oct 13 11:37:27.343 INFO kablam!   |                ^^^^^^^^^^
Oct 13 11:37:27.343 INFO kablam! 
Oct 13 11:37:27.395 INFO kablam! warning: unused variable: `buf`
Oct 13 11:37:27.395 INFO kablam!   --> src/discovery.rs:86:17
Oct 13 11:37:27.395 INFO kablam!    |
Oct 13 11:37:27.395 INFO kablam! 86 |         let mut buf: [u8; 32] = [0; 32];
Oct 13 11:37:27.395 INFO kablam!    |                 ^^^ help: consider using `_buf` instead
Oct 13 11:37:27.395 INFO kablam!    |
Oct 13 11:37:27.395 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 11:37:27.395 INFO kablam! 
Oct 13 11:37:27.400 INFO kablam! warning: variable does not need to be mutable
Oct 13 11:37:27.401 INFO kablam!   --> src/discovery.rs:16:9
Oct 13 11:37:27.401 INFO kablam!    |
Oct 13 11:37:27.401 INFO kablam! 16 |     let mut cmd_if = Command::new("ifconfig")
Oct 13 11:37:27.401 INFO kablam!    |         ----^^^^^^
Oct 13 11:37:27.401 INFO kablam!    |         |
Oct 13 11:37:27.401 INFO kablam!    |         help: remove this `mut`
Oct 13 11:37:27.401 INFO kablam!    |
Oct 13 11:37:27.402 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 11:37:27.402 INFO kablam! 
Oct 13 11:37:27.402 INFO kablam! warning: variable does not need to be mutable
Oct 13 11:37:27.402 INFO kablam!   --> src/discovery.rs:36:9
Oct 13 11:37:27.402 INFO kablam!    |
Oct 13 11:37:27.402 INFO kablam! 36 |     let mut addr = addr_iter
Oct 13 11:37:27.402 INFO kablam!    |         ----^^^^
Oct 13 11:37:27.402 INFO kablam!    |         |
Oct 13 11:37:27.403 INFO kablam!    |         help: remove this `mut`
Oct 13 11:37:27.403 INFO kablam! 
Oct 13 11:37:27.409 INFO kablam! warning: variable does not need to be mutable
Oct 13 11:37:27.409 INFO kablam!   --> src/discovery.rs:86:13
Oct 13 11:37:27.409 INFO kablam!    |
Oct 13 11:37:27.409 INFO kablam! 86 |         let mut buf: [u8; 32] = [0; 32];
Oct 13 11:37:27.409 INFO kablam!    |             ----^^^
Oct 13 11:37:27.409 INFO kablam!    |             |
Oct 13 11:37:27.409 INFO kablam!    |             help: remove this `mut`
Oct 13 11:37:27.409 INFO kablam! 
Oct 13 11:37:27.409 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 11:37:27.409 INFO kablam!   --> src/discovery.rs:87:9
Oct 13 11:37:27.409 INFO kablam!    |
Oct 13 11:37:27.409 INFO kablam! 87 |         stream.set_write_timeout(Some(Duration::new(3, 0)));
Oct 13 11:37:27.409 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 11:37:27.409 INFO kablam!    |
Oct 13 11:37:27.409 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 13 11:37:27.409 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 11:37:27.409 INFO kablam! 
Oct 13 11:37:27.409 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 11:37:27.409 INFO kablam!   --> src/discovery.rs:88:9
Oct 13 11:37:27.409 INFO kablam!    |
Oct 13 11:37:27.409 INFO kablam! 88 |         stream.set_read_timeout(Some(Duration::new(3, 0)));
Oct 13 11:37:27.409 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 11:37:27.409 INFO kablam!    |
Oct 13 11:37:27.409 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 11:37:27.409 INFO kablam! 
Oct 13 11:37:27.472 INFO kablam! warning: unused import: `std::error::Error`
Oct 13 11:37:27.472 INFO kablam!  --> src/discovery.rs:2:5
Oct 13 11:37:27.472 INFO kablam!   |
Oct 13 11:37:27.472 INFO kablam! 2 | use std::error::Error;
Oct 13 11:37:27.472 INFO kablam!   |     ^^^^^^^^^^^^^^^^^
Oct 13 11:37:27.472 INFO kablam!   |
Oct 13 11:37:27.472 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 11:37:27.472 INFO kablam! 
Oct 13 11:37:27.472 INFO kablam! warning: unused import: `std::io::Result as IoResult`
Oct 13 11:37:27.472 INFO kablam!  --> src/discovery.rs:6:5
Oct 13 11:37:27.472 INFO kablam!   |
Oct 13 11:37:27.472 INFO kablam! 6 | use std::io::Result as IoResult;
Oct 13 11:37:27.472 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 11:37:27.472 INFO kablam! 
Oct 13 11:37:27.472 INFO kablam! warning: unused import: `discovery::*`
Oct 13 11:37:27.472 INFO kablam!  --> src/main.rs:4:5
Oct 13 11:37:27.472 INFO kablam!   |
Oct 13 11:37:27.472 INFO kablam! 4 | use discovery::*;
Oct 13 11:37:27.472 INFO kablam!   |     ^^^^^^^^^^^^
Oct 13 11:37:27.472 INFO kablam! 
Oct 13 11:37:27.472 INFO kablam! warning: unused import: `SocketAddr`
Oct 13 11:37:27.472 INFO kablam!  --> src/main.rs:5:16
Oct 13 11:37:27.472 INFO kablam!   |
Oct 13 11:37:27.472 INFO kablam! 5 | use std::net::{SocketAddr};
Oct 13 11:37:27.472 INFO kablam!   |                ^^^^^^^^^^
Oct 13 11:37:27.472 INFO kablam! 
Oct 13 11:37:27.528 INFO kablam! warning: unused variable: `buf`
Oct 13 11:37:27.528 INFO kablam!   --> src/discovery.rs:86:17
Oct 13 11:37:27.528 INFO kablam!    |
Oct 13 11:37:27.528 INFO kablam! 86 |         let mut buf: [u8; 32] = [0; 32];
Oct 13 11:37:27.528 INFO kablam!    |                 ^^^ help: consider using `_buf` instead
Oct 13 11:37:27.528 INFO kablam!    |
Oct 13 11:37:27.528 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 11:37:27.528 INFO kablam! 
Oct 13 11:37:27.532 INFO kablam! warning: variable does not need to be mutable
Oct 13 11:37:27.532 INFO kablam!   --> src/discovery.rs:16:9
Oct 13 11:37:27.532 INFO kablam!    |
Oct 13 11:37:27.532 INFO kablam! 16 |     let mut cmd_if = Command::new("ifconfig")
Oct 13 11:37:27.532 INFO kablam!    |         ----^^^^^^
Oct 13 11:37:27.532 INFO kablam!    |         |
Oct 13 11:37:27.532 INFO kablam!    |         help: remove this `mut`
Oct 13 11:37:27.532 INFO kablam!    |
Oct 13 11:37:27.532 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 11:37:27.532 INFO kablam! 
Oct 13 11:37:27.532 INFO kablam! warning: variable does not need to be mutable
Oct 13 11:37:27.532 INFO kablam!   --> src/discovery.rs:36:9
Oct 13 11:37:27.532 INFO kablam!    |
Oct 13 11:37:27.532 INFO kablam! 36 |     let mut addr = addr_iter
Oct 13 11:37:27.532 INFO kablam!    |         ----^^^^
Oct 13 11:37:27.532 INFO kablam!    |         |
Oct 13 11:37:27.532 INFO kablam!    |         help: remove this `mut`
Oct 13 11:37:27.532 INFO kablam! 
Oct 13 11:37:27.535 INFO kablam! warning: variable does not need to be mutable
Oct 13 11:37:27.536 INFO kablam!   --> src/discovery.rs:86:13
Oct 13 11:37:27.536 INFO kablam!    |
Oct 13 11:37:27.536 INFO kablam! 86 |         let mut buf: [u8; 32] = [0; 32];
Oct 13 11:37:27.536 INFO kablam!    |             ----^^^
Oct 13 11:37:27.536 INFO kablam!    |             |
Oct 13 11:37:27.536 INFO kablam!    |             help: remove this `mut`
Oct 13 11:37:27.536 INFO kablam! 
Oct 13 11:37:27.536 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 11:37:27.536 INFO kablam!   --> src/discovery.rs:87:9
Oct 13 11:37:27.536 INFO kablam!    |
Oct 13 11:37:27.536 INFO kablam! 87 |         stream.set_write_timeout(Some(Duration::new(3, 0)));
Oct 13 11:37:27.536 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 11:37:27.536 INFO kablam!    |
Oct 13 11:37:27.536 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 13 11:37:27.536 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 11:37:27.536 INFO kablam! 
Oct 13 11:37:27.536 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 11:37:27.536 INFO kablam!   --> src/discovery.rs:88:9
Oct 13 11:37:27.536 INFO kablam!    |
Oct 13 11:37:27.536 INFO kablam! 88 |         stream.set_read_timeout(Some(Duration::new(3, 0)));
Oct 13 11:37:27.536 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 11:37:27.536 INFO kablam!    |
Oct 13 11:37:27.536 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 11:37:27.536 INFO kablam! 
Oct 13 11:37:27.552 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
Oct 13 11:37:27.553 INFO kablam! su: No module specific data is present
Oct 13 11:37:27.885 INFO running `"docker" "rm" "-f" "1351498eead81ed223dc8b3a410d5f0e689f32f97d753442b838c06607654470"`
Oct 13 11:37:27.980 INFO blam! 1351498eead81ed223dc8b3a410d5f0e689f32f97d753442b838c06607654470