Dec 12 10:58:15.452 INFO checking nexrs-0.1.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 10:58:15.452 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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"`
Dec 12 10:58:15.720 INFO [stdout] 70f817facd92c0d4d43ee47edc522ef856a9baf9adb8edca33a1b904e5d1ce4a
Dec 12 10:58:15.722 INFO running `"docker" "start" "-a" "70f817facd92c0d4d43ee47edc522ef856a9baf9adb8edca33a1b904e5d1ce4a"`
Dec 12 10:58:16.284 INFO [stderr] usermod: no changes
Dec 12 10:58:16.322 INFO [stderr]     Checking nexrs v0.1.0 (/source)
Dec 12 10:58:16.804 INFO [stderr] warning: unused import: `std::error::Error`
Dec 12 10:58:16.804 INFO [stderr]  --> src/discovery.rs:2:5
Dec 12 10:58:16.804 INFO [stderr]   |
Dec 12 10:58:16.804 INFO [stderr] 2 | use std::error::Error;
Dec 12 10:58:16.804 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 12 10:58:16.804 INFO [stderr]   |
Dec 12 10:58:16.804 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 10:58:16.804 INFO [stderr] 
Dec 12 10:58:16.804 INFO [stderr] warning: unused import: `std::io::Result as IoResult`
Dec 12 10:58:16.804 INFO [stderr]  --> src/discovery.rs:6:5
Dec 12 10:58:16.804 INFO [stderr]   |
Dec 12 10:58:16.804 INFO [stderr] 6 | use std::io::Result as IoResult;
Dec 12 10:58:16.804 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 10:58:16.804 INFO [stderr] 
Dec 12 10:58:16.804 INFO [stderr] warning: unused import: `discovery::*`
Dec 12 10:58:16.804 INFO [stderr]  --> src/main.rs:4:5
Dec 12 10:58:16.804 INFO [stderr]   |
Dec 12 10:58:16.804 INFO [stderr] 4 | use discovery::*;
Dec 12 10:58:16.804 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 12 10:58:16.805 INFO [stderr] 
Dec 12 10:58:16.805 INFO [stderr] warning: unused import: `SocketAddr`
Dec 12 10:58:16.805 INFO [stderr]  --> src/main.rs:5:16
Dec 12 10:58:16.805 INFO [stderr]   |
Dec 12 10:58:16.805 INFO [stderr] 5 | use std::net::{SocketAddr};
Dec 12 10:58:16.805 INFO [stderr]   |                ^^^^^^^^^^
Dec 12 10:58:16.805 INFO [stderr] 
Dec 12 10:58:16.856 INFO [stderr] warning: unused variable: `buf`
Dec 12 10:58:16.856 INFO [stderr]   --> src/discovery.rs:86:17
Dec 12 10:58:16.856 INFO [stderr]    |
Dec 12 10:58:16.856 INFO [stderr] 86 |         let mut buf: [u8; 32] = [0; 32];
Dec 12 10:58:16.856 INFO [stderr]    |                 ^^^ help: consider using `_buf` instead
Dec 12 10:58:16.856 INFO [stderr]    |
Dec 12 10:58:16.856 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 10:58:16.856 INFO [stderr] 
Dec 12 10:58:16.868 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:58:16.868 INFO [stderr]   --> src/discovery.rs:16:9
Dec 12 10:58:16.868 INFO [stderr]    |
Dec 12 10:58:16.868 INFO [stderr] 16 |     let mut cmd_if = Command::new("ifconfig")
Dec 12 10:58:16.868 INFO [stderr]    |         ----^^^^^^
Dec 12 10:58:16.868 INFO [stderr]    |         |
Dec 12 10:58:16.868 INFO [stderr]    |         help: remove this `mut`
Dec 12 10:58:16.868 INFO [stderr]    |
Dec 12 10:58:16.868 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 10:58:16.868 INFO [stderr] 
Dec 12 10:58:16.868 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:58:16.868 INFO [stderr]   --> src/discovery.rs:36:9
Dec 12 10:58:16.868 INFO [stderr]    |
Dec 12 10:58:16.868 INFO [stderr] 36 |     let mut addr = addr_iter
Dec 12 10:58:16.868 INFO [stderr]    |         ----^^^^
Dec 12 10:58:16.868 INFO [stderr]    |         |
Dec 12 10:58:16.868 INFO [stderr]    |         help: remove this `mut`
Dec 12 10:58:16.868 INFO [stderr] 
Dec 12 10:58:16.868 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:58:16.868 INFO [stderr]   --> src/discovery.rs:86:13
Dec 12 10:58:16.868 INFO [stderr]    |
Dec 12 10:58:16.868 INFO [stderr] 86 |         let mut buf: [u8; 32] = [0; 32];
Dec 12 10:58:16.868 INFO [stderr]    |             ----^^^
Dec 12 10:58:16.868 INFO [stderr]    |             |
Dec 12 10:58:16.868 INFO [stderr]    |             help: remove this `mut`
Dec 12 10:58:16.868 INFO [stderr] 
Dec 12 10:58:16.870 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 10:58:16.870 INFO [stderr]   --> src/discovery.rs:87:9
Dec 12 10:58:16.870 INFO [stderr]    |
Dec 12 10:58:16.870 INFO [stderr] 87 |         stream.set_write_timeout(Some(Duration::new(3, 0)));
Dec 12 10:58:16.870 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 10:58:16.870 INFO [stderr]    |
Dec 12 10:58:16.870 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 10:58:16.870 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 10:58:16.870 INFO [stderr] 
Dec 12 10:58:16.870 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 10:58:16.870 INFO [stderr]   --> src/discovery.rs:88:9
Dec 12 10:58:16.870 INFO [stderr]    |
Dec 12 10:58:16.870 INFO [stderr] 88 |         stream.set_read_timeout(Some(Duration::new(3, 0)));
Dec 12 10:58:16.870 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 10:58:16.870 INFO [stderr]    |
Dec 12 10:58:16.870 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 10:58:16.870 INFO [stderr] 
Dec 12 10:58:16.883 INFO [stderr] warning: unused import: `std::error::Error`
Dec 12 10:58:16.883 INFO [stderr]  --> src/discovery.rs:2:5
Dec 12 10:58:16.883 INFO [stderr]   |
Dec 12 10:58:16.883 INFO [stderr] 2 | use std::error::Error;
Dec 12 10:58:16.883 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 12 10:58:16.883 INFO [stderr]   |
Dec 12 10:58:16.883 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 10:58:16.883 INFO [stderr] 
Dec 12 10:58:16.883 INFO [stderr] warning: unused import: `std::io::Result as IoResult`
Dec 12 10:58:16.883 INFO [stderr]  --> src/discovery.rs:6:5
Dec 12 10:58:16.883 INFO [stderr]   |
Dec 12 10:58:16.883 INFO [stderr] 6 | use std::io::Result as IoResult;
Dec 12 10:58:16.883 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 10:58:16.883 INFO [stderr] 
Dec 12 10:58:16.883 INFO [stderr] warning: unused import: `discovery::*`
Dec 12 10:58:16.883 INFO [stderr]  --> src/main.rs:4:5
Dec 12 10:58:16.883 INFO [stderr]   |
Dec 12 10:58:16.883 INFO [stderr] 4 | use discovery::*;
Dec 12 10:58:16.883 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 12 10:58:16.883 INFO [stderr] 
Dec 12 10:58:16.883 INFO [stderr] warning: unused import: `SocketAddr`
Dec 12 10:58:16.883 INFO [stderr]  --> src/main.rs:5:16
Dec 12 10:58:16.883 INFO [stderr]   |
Dec 12 10:58:16.883 INFO [stderr] 5 | use std::net::{SocketAddr};
Dec 12 10:58:16.883 INFO [stderr]   |                ^^^^^^^^^^
Dec 12 10:58:16.883 INFO [stderr] 
Dec 12 10:58:16.968 INFO [stderr] warning: unused variable: `buf`
Dec 12 10:58:16.968 INFO [stderr]   --> src/discovery.rs:86:17
Dec 12 10:58:16.968 INFO [stderr]    |
Dec 12 10:58:16.968 INFO [stderr] 86 |         let mut buf: [u8; 32] = [0; 32];
Dec 12 10:58:16.968 INFO [stderr]    |                 ^^^ help: consider using `_buf` instead
Dec 12 10:58:16.968 INFO [stderr]    |
Dec 12 10:58:16.968 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 10:58:16.968 INFO [stderr] 
Dec 12 10:58:16.968 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:58:16.968 INFO [stderr]   --> src/discovery.rs:16:9
Dec 12 10:58:16.968 INFO [stderr]    |
Dec 12 10:58:16.968 INFO [stderr] 16 |     let mut cmd_if = Command::new("ifconfig")
Dec 12 10:58:16.968 INFO [stderr]    |         ----^^^^^^
Dec 12 10:58:16.968 INFO [stderr]    |         |
Dec 12 10:58:16.968 INFO [stderr]    |         help: remove this `mut`
Dec 12 10:58:16.968 INFO [stderr]    |
Dec 12 10:58:16.968 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 10:58:16.968 INFO [stderr] 
Dec 12 10:58:16.968 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:58:16.968 INFO [stderr]   --> src/discovery.rs:36:9
Dec 12 10:58:16.968 INFO [stderr]    |
Dec 12 10:58:16.968 INFO [stderr] 36 |     let mut addr = addr_iter
Dec 12 10:58:16.968 INFO [stderr]    |         ----^^^^
Dec 12 10:58:16.968 INFO [stderr]    |         |
Dec 12 10:58:16.968 INFO [stderr]    |         help: remove this `mut`
Dec 12 10:58:16.968 INFO [stderr] 
Dec 12 10:58:16.968 INFO [stderr] warning: variable does not need to be mutable
Dec 12 10:58:16.968 INFO [stderr]   --> src/discovery.rs:86:13
Dec 12 10:58:16.968 INFO [stderr]    |
Dec 12 10:58:16.968 INFO [stderr] 86 |         let mut buf: [u8; 32] = [0; 32];
Dec 12 10:58:16.968 INFO [stderr]    |             ----^^^
Dec 12 10:58:16.968 INFO [stderr]    |             |
Dec 12 10:58:16.968 INFO [stderr]    |             help: remove this `mut`
Dec 12 10:58:16.968 INFO [stderr] 
Dec 12 10:58:16.968 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 10:58:16.968 INFO [stderr]   --> src/discovery.rs:87:9
Dec 12 10:58:16.968 INFO [stderr]    |
Dec 12 10:58:16.968 INFO [stderr] 87 |         stream.set_write_timeout(Some(Duration::new(3, 0)));
Dec 12 10:58:16.968 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 10:58:16.968 INFO [stderr]    |
Dec 12 10:58:16.968 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 10:58:16.968 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 10:58:16.968 INFO [stderr] 
Dec 12 10:58:16.968 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 10:58:16.969 INFO [stderr]   --> src/discovery.rs:88:9
Dec 12 10:58:16.969 INFO [stderr]    |
Dec 12 10:58:16.969 INFO [stderr] 88 |         stream.set_read_timeout(Some(Duration::new(3, 0)));
Dec 12 10:58:16.969 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 10:58:16.969 INFO [stderr]    |
Dec 12 10:58:16.969 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 10:58:16.969 INFO [stderr] 
Dec 12 10:58:16.995 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
Dec 12 10:58:16.996 INFO [stderr] su: No module specific data is present
Dec 12 10:58:17.430 INFO running `"docker" "inspect" "70f817facd92c0d4d43ee47edc522ef856a9baf9adb8edca33a1b904e5d1ce4a"`
Dec 12 10:58:17.646 INFO running `"docker" "rm" "-f" "70f817facd92c0d4d43ee47edc522ef856a9baf9adb8edca33a1b904e5d1ce4a"`
Dec 12 10:58:17.762 INFO [stdout] 70f817facd92c0d4d43ee47edc522ef856a9baf9adb8edca33a1b904e5d1ce4a