[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-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/daogangtang/learn-rust-lib"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/daogangtang/learn-rust-lib'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/daogangtang/learn-rust-lib" "work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/daogangtang/learn-rust-lib"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/daogangtang/learn-rust-lib'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e714095d67a7803396be127e331b8d5ca9473c61
[INFO] sha for GitHub repo daogangtang/learn-rust-lib: e714095d67a7803396be127e331b8d5ca9473c61
[INFO] validating manifest of daogangtang/learn-rust-lib on toolchain master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of daogangtang/learn-rust-lib on toolchain try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-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-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/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-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/daogangtang/learn-rust-lib/Cargo.toml
[INFO] crate daogangtang/learn-rust-lib has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking daogangtang/learn-rust-lib against try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0 for pr-57321
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57321/worker-6/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/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" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2033895347f42ddbca5e97ca54b1f9e9c832a6374cee9e6289200c74512bb751
[INFO] running `"docker" "start" "-a" "2033895347f42ddbca5e97ca54b1f9e9c832a6374cee9e6289200c74512bb751"`
[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] 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]   --> 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: 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 1.57s
[INFO] running `"docker" "inspect" "2033895347f42ddbca5e97ca54b1f9e9c832a6374cee9e6289200c74512bb751"`
[INFO] running `"docker" "rm" "-f" "2033895347f42ddbca5e97ca54b1f9e9c832a6374cee9e6289200c74512bb751"`
[INFO] [stdout] 2033895347f42ddbca5e97ca54b1f9e9c832a6374cee9e6289200c74512bb751