Dec 19 18:23:21.162 INFO checking daogangtang/learn-rust-lib against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 18:23:21.162 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/daogangtang/learn-rust-lib:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 18:23:21.605 INFO [stdout] 652d7280177f1c24e20f77b599f28a701bc32fab5bb8ce829c93e10e1ad84eb3
Dec 19 18:23:21.608 INFO running `"docker" "start" "-a" "652d7280177f1c24e20f77b599f28a701bc32fab5bb8ce829c93e10e1ad84eb3"`
Dec 19 18:23:24.187 INFO [stderr]     Checking c_linked_list v1.1.1
Dec 19 18:23:24.572 INFO [stderr]     Checking get_if_addrs v0.5.3
Dec 19 18:23:24.957 INFO [stderr]     Checking learn-rust-lib v0.1.0 (/opt/crater/workdir)
Dec 19 18:23:25.208 INFO [stderr] warning: unused imports: `Ipv4Addr`, `Ipv6Addr`
Dec 19 18:23:25.208 INFO [stderr]  --> src/get_if_addrs.rs:4:24
Dec 19 18:23:25.208 INFO [stderr]   |
Dec 19 18:23:25.209 INFO [stderr] 4 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
Dec 19 18:23:25.209 INFO [stderr]   |                        ^^^^^^^^  ^^^^^^^^
Dec 19 18:23:25.209 INFO [stderr]   |
Dec 19 18:23:25.209 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 18:23:25.209 INFO [stderr] 
Dec 19 18:23:25.236 INFO [stderr] warning: unreachable pattern
Dec 19 18:23:25.236 INFO [stderr]   --> src/get_if_addrs.rs:28:13
Dec 19 18:23:25.236 INFO [stderr]    |
Dec 19 18:23:25.236 INFO [stderr] 28 |             _ => (),
Dec 19 18:23:25.236 INFO [stderr]    |             ^
Dec 19 18:23:25.236 INFO [stderr]    |
Dec 19 18:23:25.236 INFO [stderr]    = note: #[warn(unreachable_patterns)] on by default
Dec 19 18:23:25.236 INFO [stderr] 
Dec 19 18:23:25.412 INFO [stderr] warning: unused imports: `Ipv4Addr`, `Ipv6Addr`
Dec 19 18:23:25.412 INFO [stderr]  --> src/get_if_addrs.rs:4:24
Dec 19 18:23:25.412 INFO [stderr]   |
Dec 19 18:23:25.412 INFO [stderr] 4 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
Dec 19 18:23:25.412 INFO [stderr]   |                        ^^^^^^^^  ^^^^^^^^
Dec 19 18:23:25.412 INFO [stderr]   |
Dec 19 18:23:25.412 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 18:23:25.412 INFO [stderr] 
Dec 19 18:23:25.439 INFO [stderr] warning: unreachable pattern
Dec 19 18:23:25.439 INFO [stderr]   --> src/get_if_addrs.rs:28:13
Dec 19 18:23:25.439 INFO [stderr]    |
Dec 19 18:23:25.439 INFO [stderr] 28 |             _ => (),
Dec 19 18:23:25.439 INFO [stderr]    |             ^
Dec 19 18:23:25.439 INFO [stderr]    |
Dec 19 18:23:25.440 INFO [stderr]    = note: #[warn(unreachable_patterns)] on by default
Dec 19 18:23:25.440 INFO [stderr] 
Dec 19 18:23:25.489 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
Dec 19 18:23:26.474 INFO running `"docker" "inspect" "652d7280177f1c24e20f77b599f28a701bc32fab5bb8ce829c93e10e1ad84eb3"`
Dec 19 18:23:26.852 INFO running `"docker" "rm" "-f" "652d7280177f1c24e20f77b599f28a701bc32fab5bb8ce829c93e10e1ad84eb3"`
Dec 19 18:23:27.156 INFO [stdout] 652d7280177f1c24e20f77b599f28a701bc32fab5bb8ce829c93e10e1ad84eb3