[INFO] updating cached repository daogangtang/learn-rust-lib
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/daogangtang/learn-rust-lib
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/daogangtang/learn-rust-lib" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/daogangtang/learn-rust-lib"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/daogangtang/learn-rust-lib'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/daogangtang/learn-rust-lib" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/daogangtang/learn-rust-lib"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/daogangtang/learn-rust-lib'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 28736be251de818accc165389215ce4afcac475e
[INFO] sha for GitHub repo daogangtang/learn-rust-lib: 28736be251de818accc165389215ce4afcac475e
[INFO] validating manifest of daogangtang/learn-rust-lib on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of daogangtang/learn-rust-lib on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing daogangtang/learn-rust-lib
[INFO] finished frobbing daogangtang/learn-rust-lib
[INFO] frobbed toml for daogangtang/learn-rust-lib written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/daogangtang/learn-rust-lib/Cargo.toml
[INFO] started frobbing daogangtang/learn-rust-lib
[INFO] finished frobbing daogangtang/learn-rust-lib
[INFO] frobbed toml for daogangtang/learn-rust-lib written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/daogangtang/learn-rust-lib/Cargo.toml
[INFO] crate daogangtang/learn-rust-lib already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking daogangtang/learn-rust-lib against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-5/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4b091153053e97c1d6b244563a2ef792260632021a35006a39f0287e2585e87c
[INFO] running `"docker" "start" "-a" "4b091153053e97c1d6b244563a2ef792260632021a35006a39f0287e2585e87c"`
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking learn-rust-lib v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Ipv4Addr`, `Ipv6Addr`
[INFO] [stderr]  --> src/get_if_addrs.rs:4:24
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
[INFO] [stderr]   |                        ^^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/get_if_addrs.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |             _ => (),
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Ipv4Addr`, `Ipv6Addr`
[INFO] [stderr]  --> src/get_if_addrs.rs:4:24
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
[INFO] [stderr]   |                        ^^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/get_if_addrs.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |             _ => (),
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.82s
[INFO] running `"docker" "inspect" "4b091153053e97c1d6b244563a2ef792260632021a35006a39f0287e2585e87c"`
[INFO] running `"docker" "rm" "-f" "4b091153053e97c1d6b244563a2ef792260632021a35006a39f0287e2585e87c"`
[INFO] [stdout] 4b091153053e97c1d6b244563a2ef792260632021a35006a39f0287e2585e87c