Dec 18 13:40:05.256 INFO checking nexrs-0.1.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 13:40:05.257 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/nexrs/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 13:40:05.603 INFO [stdout] 261a258161e722fcfd3d89038cc5d9204fd9fa678c7930364c6de7c7ce2d36c7
Dec 18 13:40:05.603 INFO running `"docker" "start" "-a" "261a258161e722fcfd3d89038cc5d9204fd9fa678c7930364c6de7c7ce2d36c7"`
Dec 18 13:40:06.515 INFO [stderr]     Checking nexrs v0.1.0 (/opt/crater/workdir)
Dec 18 13:40:06.782 INFO [stderr] warning: unused import: `std::error::Error`
Dec 18 13:40:06.782 INFO [stderr]  --> src/discovery.rs:2:5
Dec 18 13:40:06.782 INFO [stderr]   |
Dec 18 13:40:06.782 INFO [stderr] 2 | use std::error::Error;
Dec 18 13:40:06.782 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 18 13:40:06.782 INFO [stderr]   |
Dec 18 13:40:06.782 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 13:40:06.782 INFO [stderr] 
Dec 18 13:40:06.782 INFO [stderr] warning: unused import: `std::io::Result as IoResult`
Dec 18 13:40:06.782 INFO [stderr]  --> src/discovery.rs:6:5
Dec 18 13:40:06.782 INFO [stderr]   |
Dec 18 13:40:06.782 INFO [stderr] 6 | use std::io::Result as IoResult;
Dec 18 13:40:06.782 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 13:40:06.782 INFO [stderr] 
Dec 18 13:40:06.782 INFO [stderr] warning: unused import: `discovery::*`
Dec 18 13:40:06.782 INFO [stderr]  --> src/main.rs:4:5
Dec 18 13:40:06.782 INFO [stderr]   |
Dec 18 13:40:06.782 INFO [stderr] 4 | use discovery::*;
Dec 18 13:40:06.782 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 18 13:40:06.782 INFO [stderr] 
Dec 18 13:40:06.782 INFO [stderr] warning: unused import: `SocketAddr`
Dec 18 13:40:06.782 INFO [stderr]  --> src/main.rs:5:16
Dec 18 13:40:06.782 INFO [stderr]   |
Dec 18 13:40:06.782 INFO [stderr] 5 | use std::net::{SocketAddr};
Dec 18 13:40:06.782 INFO [stderr]   |                ^^^^^^^^^^
Dec 18 13:40:06.782 INFO [stderr] 
Dec 18 13:40:06.807 INFO [stderr] warning: unused import: `std::error::Error`
Dec 18 13:40:06.807 INFO [stderr]  --> src/discovery.rs:2:5
Dec 18 13:40:06.807 INFO [stderr]   |
Dec 18 13:40:06.807 INFO [stderr] 2 | use std::error::Error;
Dec 18 13:40:06.807 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 18 13:40:06.807 INFO [stderr]   |
Dec 18 13:40:06.807 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 13:40:06.807 INFO [stderr] 
Dec 18 13:40:06.807 INFO [stderr] warning: unused import: `std::io::Result as IoResult`
Dec 18 13:40:06.807 INFO [stderr]  --> src/discovery.rs:6:5
Dec 18 13:40:06.807 INFO [stderr]   |
Dec 18 13:40:06.807 INFO [stderr] 6 | use std::io::Result as IoResult;
Dec 18 13:40:06.807 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 13:40:06.807 INFO [stderr] 
Dec 18 13:40:06.807 INFO [stderr] warning: unused import: `discovery::*`
Dec 18 13:40:06.807 INFO [stderr]  --> src/main.rs:4:5
Dec 18 13:40:06.807 INFO [stderr]   |
Dec 18 13:40:06.807 INFO [stderr] 4 | use discovery::*;
Dec 18 13:40:06.807 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 18 13:40:06.807 INFO [stderr] 
Dec 18 13:40:06.807 INFO [stderr] warning: unused import: `SocketAddr`
Dec 18 13:40:06.807 INFO [stderr]  --> src/main.rs:5:16
Dec 18 13:40:06.807 INFO [stderr]   |
Dec 18 13:40:06.807 INFO [stderr] 5 | use std::net::{SocketAddr};
Dec 18 13:40:06.807 INFO [stderr]   |                ^^^^^^^^^^
Dec 18 13:40:06.807 INFO [stderr] 
Dec 18 13:40:06.832 INFO [stderr] warning: unused variable: `buf`
Dec 18 13:40:06.832 INFO [stderr]   --> src/discovery.rs:86:17
Dec 18 13:40:06.832 INFO [stderr]    |
Dec 18 13:40:06.832 INFO [stderr] 86 |         let mut buf: [u8; 32] = [0; 32];
Dec 18 13:40:06.832 INFO [stderr]    |                 ^^^ help: consider using `_buf` instead
Dec 18 13:40:06.832 INFO [stderr]    |
Dec 18 13:40:06.832 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 13:40:06.832 INFO [stderr] 
Dec 18 13:40:06.860 INFO [stderr] warning: variable does not need to be mutable
Dec 18 13:40:06.860 INFO [stderr]   --> src/discovery.rs:16:9
Dec 18 13:40:06.860 INFO [stderr]    |
Dec 18 13:40:06.860 INFO [stderr] 16 |     let mut cmd_if = Command::new("ifconfig")
Dec 18 13:40:06.860 INFO [stderr]    |         ----^^^^^^
Dec 18 13:40:06.860 INFO [stderr]    |         |
Dec 18 13:40:06.860 INFO [stderr]    |         help: remove this `mut`
Dec 18 13:40:06.860 INFO [stderr]    |
Dec 18 13:40:06.860 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 13:40:06.860 INFO [stderr] 
Dec 18 13:40:06.860 INFO [stderr] warning: variable does not need to be mutable
Dec 18 13:40:06.860 INFO [stderr]   --> src/discovery.rs:36:9
Dec 18 13:40:06.860 INFO [stderr]    |
Dec 18 13:40:06.860 INFO [stderr] 36 |     let mut addr = addr_iter
Dec 18 13:40:06.860 INFO [stderr]    |         ----^^^^
Dec 18 13:40:06.860 INFO [stderr]    |         |
Dec 18 13:40:06.860 INFO [stderr]    |         help: remove this `mut`
Dec 18 13:40:06.860 INFO [stderr] 
Dec 18 13:40:06.860 INFO [stderr] warning: variable does not need to be mutable
Dec 18 13:40:06.860 INFO [stderr]   --> src/discovery.rs:86:13
Dec 18 13:40:06.860 INFO [stderr]    |
Dec 18 13:40:06.860 INFO [stderr] 86 |         let mut buf: [u8; 32] = [0; 32];
Dec 18 13:40:06.860 INFO [stderr]    |             ----^^^
Dec 18 13:40:06.860 INFO [stderr]    |             |
Dec 18 13:40:06.860 INFO [stderr]    |             help: remove this `mut`
Dec 18 13:40:06.860 INFO [stderr] 
Dec 18 13:40:06.860 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 13:40:06.860 INFO [stderr]   --> src/discovery.rs:87:9
Dec 18 13:40:06.860 INFO [stderr]    |
Dec 18 13:40:06.860 INFO [stderr] 87 |         stream.set_write_timeout(Some(Duration::new(3, 0)));
Dec 18 13:40:06.860 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 13:40:06.860 INFO [stderr]    |
Dec 18 13:40:06.860 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 13:40:06.860 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 13:40:06.860 INFO [stderr] 
Dec 18 13:40:06.860 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 13:40:06.861 INFO [stderr]   --> src/discovery.rs:88:9
Dec 18 13:40:06.861 INFO [stderr]    |
Dec 18 13:40:06.861 INFO [stderr] 88 |         stream.set_read_timeout(Some(Duration::new(3, 0)));
Dec 18 13:40:06.861 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 13:40:06.861 INFO [stderr]    |
Dec 18 13:40:06.861 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 13:40:06.861 INFO [stderr] 
Dec 18 13:40:06.880 INFO [stderr] warning: unused variable: `buf`
Dec 18 13:40:06.880 INFO [stderr]   --> src/discovery.rs:86:17
Dec 18 13:40:06.880 INFO [stderr]    |
Dec 18 13:40:06.880 INFO [stderr] 86 |         let mut buf: [u8; 32] = [0; 32];
Dec 18 13:40:06.880 INFO [stderr]    |                 ^^^ help: consider using `_buf` instead
Dec 18 13:40:06.880 INFO [stderr]    |
Dec 18 13:40:06.880 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 13:40:06.880 INFO [stderr] 
Dec 18 13:40:06.903 INFO [stderr] warning: variable does not need to be mutable
Dec 18 13:40:06.903 INFO [stderr]   --> src/discovery.rs:16:9
Dec 18 13:40:06.903 INFO [stderr]    |
Dec 18 13:40:06.903 INFO [stderr] 16 |     let mut cmd_if = Command::new("ifconfig")
Dec 18 13:40:06.903 INFO [stderr]    |         ----^^^^^^
Dec 18 13:40:06.903 INFO [stderr]    |         |
Dec 18 13:40:06.903 INFO [stderr]    |         help: remove this `mut`
Dec 18 13:40:06.903 INFO [stderr]    |
Dec 18 13:40:06.903 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 13:40:06.903 INFO [stderr] 
Dec 18 13:40:06.903 INFO [stderr] warning: variable does not need to be mutable
Dec 18 13:40:06.903 INFO [stderr]   --> src/discovery.rs:36:9
Dec 18 13:40:06.903 INFO [stderr]    |
Dec 18 13:40:06.903 INFO [stderr] 36 |     let mut addr = addr_iter
Dec 18 13:40:06.903 INFO [stderr]    |         ----^^^^
Dec 18 13:40:06.903 INFO [stderr]    |         |
Dec 18 13:40:06.903 INFO [stderr]    |         help: remove this `mut`
Dec 18 13:40:06.903 INFO [stderr] 
Dec 18 13:40:06.903 INFO [stderr] warning: variable does not need to be mutable
Dec 18 13:40:06.903 INFO [stderr]   --> src/discovery.rs:86:13
Dec 18 13:40:06.903 INFO [stderr]    |
Dec 18 13:40:06.903 INFO [stderr] 86 |         let mut buf: [u8; 32] = [0; 32];
Dec 18 13:40:06.903 INFO [stderr]    |             ----^^^
Dec 18 13:40:06.903 INFO [stderr]    |             |
Dec 18 13:40:06.903 INFO [stderr]    |             help: remove this `mut`
Dec 18 13:40:06.903 INFO [stderr] 
Dec 18 13:40:06.903 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 13:40:06.903 INFO [stderr]   --> src/discovery.rs:87:9
Dec 18 13:40:06.903 INFO [stderr]    |
Dec 18 13:40:06.903 INFO [stderr] 87 |         stream.set_write_timeout(Some(Duration::new(3, 0)));
Dec 18 13:40:06.903 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 13:40:06.903 INFO [stderr]    |
Dec 18 13:40:06.903 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 13:40:06.903 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 13:40:06.903 INFO [stderr] 
Dec 18 13:40:06.903 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 13:40:06.903 INFO [stderr]   --> src/discovery.rs:88:9
Dec 18 13:40:06.903 INFO [stderr]    |
Dec 18 13:40:06.903 INFO [stderr] 88 |         stream.set_read_timeout(Some(Duration::new(3, 0)));
Dec 18 13:40:06.903 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 13:40:06.903 INFO [stderr]    |
Dec 18 13:40:06.903 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 13:40:06.903 INFO [stderr] 
Dec 18 13:40:06.914 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Dec 18 13:40:07.176 INFO running `"docker" "inspect" "261a258161e722fcfd3d89038cc5d9204fd9fa678c7930364c6de7c7ce2d36c7"`
Dec 18 13:40:07.266 INFO running `"docker" "rm" "-f" "261a258161e722fcfd3d89038cc5d9204fd9fa678c7930364c6de7c7ce2d36c7"`
Dec 18 13:40:07.398 INFO [stdout] 261a258161e722fcfd3d89038cc5d9204fd9fa678c7930364c6de7c7ce2d36c7