[INFO] cloning repository https://github.com/daogangtang/learn-rust-lib
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daogangtang/learn-rust-lib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaogangtang%2Flearn-rust-lib", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaogangtang%2Flearn-rust-lib'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 28736be251de818accc165389215ce4afcac475e
[INFO] testing daogangtang/learn-rust-lib against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaogangtang%2Flearn-rust-lib" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/daogangtang/learn-rust-lib on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/daogangtang/learn-rust-lib
[INFO] finished tweaking git repo https://github.com/daogangtang/learn-rust-lib
[INFO] tweaked toml for git repo https://github.com/daogangtang/learn-rust-lib written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/daogangtang/learn-rust-lib already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 299339743fca949b2ccceb4de6e4650d8e44daa5cd7c865e5dad7f1992de7b45
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "299339743fca949b2ccceb4de6e4650d8e44daa5cd7c865e5dad7f1992de7b45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "299339743fca949b2ccceb4de6e4650d8e44daa5cd7c865e5dad7f1992de7b45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "299339743fca949b2ccceb4de6e4650d8e44daa5cd7c865e5dad7f1992de7b45", kill_on_drop: false }`
[INFO] [stdout] 299339743fca949b2ccceb4de6e4650d8e44daa5cd7c865e5dad7f1992de7b45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7cab3f94f7e6ed12359e6aeeca1ea33e469a8f3840b745531ff3038e2ec275fa
[INFO] running `Command { std: "docker" "start" "-a" "7cab3f94f7e6ed12359e6aeeca1ea33e469a8f3840b745531ff3038e2ec275fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling c_linked_list v1.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling get_if_addrs v0.5.3
[INFO] [stderr]    Compiling learn-rust-lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Ipv4Addr`, `Ipv6Addr`
[INFO] [stdout]  --> src/get_if_addrs.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
[INFO] [stdout]   |                        ^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/get_if_addrs.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             _ => (),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.55s
[INFO] running `Command { std: "docker" "inspect" "7cab3f94f7e6ed12359e6aeeca1ea33e469a8f3840b745531ff3038e2ec275fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cab3f94f7e6ed12359e6aeeca1ea33e469a8f3840b745531ff3038e2ec275fa", kill_on_drop: false }`
[INFO] [stdout] 7cab3f94f7e6ed12359e6aeeca1ea33e469a8f3840b745531ff3038e2ec275fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10600965c88442d74b1226de982bcca966ca78addff33d3207791e187020c2a0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "10600965c88442d74b1226de982bcca966ca78addff33d3207791e187020c2a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn-rust-lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Ipv4Addr`, `Ipv6Addr`
[INFO] [stdout]  --> src/get_if_addrs.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::net::{IpAddr, Ipv4Addr, Ipv6Addr};
[INFO] [stdout]   |                        ^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/get_if_addrs.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             _ => (),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.89s
[INFO] [stderr]   Executable unittests src/get_if_addrs.rs (/opt/rustwide/target/debug/deps/get_if_addrs-8d3a981275ffd99c)
[INFO] [stderr]   Executable unittests src/rand_choose.rs (/opt/rustwide/target/debug/deps/rand_choose-2482f7b17ecad251)
[INFO] [stderr]   Executable unittests src/rand_choose_multiple.rs (/opt/rustwide/target/debug/deps/rand_choose_multiple-1bf4781815ab89ee)
[INFO] [stderr]   Executable unittests src/rand_shuffle.rs (/opt/rustwide/target/debug/deps/rand_shuffle-1a727de95eb9336c)
[INFO] running `Command { std: "docker" "inspect" "10600965c88442d74b1226de982bcca966ca78addff33d3207791e187020c2a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10600965c88442d74b1226de982bcca966ca78addff33d3207791e187020c2a0", kill_on_drop: false }`
[INFO] [stdout] 10600965c88442d74b1226de982bcca966ca78addff33d3207791e187020c2a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fb7d5fd3145fdb4ba8e9ade2f47d8b3f8e5d9d6b670184caf72c6128d734abac
[INFO] running `Command { std: "docker" "start" "-a" "fb7d5fd3145fdb4ba8e9ade2f47d8b3f8e5d9d6b670184caf72c6128d734abac", kill_on_drop: false }`
[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: `learn-rust-lib` (bin "get_if_addrs" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/get_if_addrs.rs (/opt/rustwide/target/debug/deps/get_if_addrs-8d3a981275ffd99c)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/rand_choose.rs (/opt/rustwide/target/debug/deps/rand_choose-2482f7b17ecad251)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/rand_choose_multiple.rs (/opt/rustwide/target/debug/deps/rand_choose_multiple-1bf4781815ab89ee)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/rand_shuffle.rs (/opt/rustwide/target/debug/deps/rand_shuffle-1a727de95eb9336c)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fb7d5fd3145fdb4ba8e9ade2f47d8b3f8e5d9d6b670184caf72c6128d734abac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb7d5fd3145fdb4ba8e9ade2f47d8b3f8e5d9d6b670184caf72c6128d734abac", kill_on_drop: false }`
[INFO] [stdout] fb7d5fd3145fdb4ba8e9ade2f47d8b3f8e5d9d6b670184caf72c6128d734abac