[INFO] cloning repository https://github.com/nnenn0/algo-lib-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nnenn0/algo-lib-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnnenn0%2Falgo-lib-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnnenn0%2Falgo-lib-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f66b3a6a91d7bee7c3fd8b6497f58916b377a655
[INFO] testing nnenn0/algo-lib-rust against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnnenn0%2Falgo-lib-rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nnenn0/algo-lib-rust on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nnenn0/algo-lib-rust
[INFO] finished tweaking git repo https://github.com/nnenn0/algo-lib-rust
[INFO] tweaked toml for git repo https://github.com/nnenn0/algo-lib-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/nnenn0/algo-lib-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d13eff281bab87836a4c4fb1bc89b4d6a214c7940e8e69faf269365560052571
[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" "d13eff281bab87836a4c4fb1bc89b4d6a214c7940e8e69faf269365560052571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d13eff281bab87836a4c4fb1bc89b4d6a214c7940e8e69faf269365560052571", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d13eff281bab87836a4c4fb1bc89b4d6a214c7940e8e69faf269365560052571", kill_on_drop: false }`
[INFO] [stdout] d13eff281bab87836a4c4fb1bc89b4d6a214c7940e8e69faf269365560052571
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f98e1868297533b7fd2e5520b33dfe2ae76ab124e71e5959a5248c0d78d75aa
[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" "4f98e1868297533b7fd2e5520b33dfe2ae76ab124e71e5959a5248c0d78d75aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling proconio v0.4.3
[INFO] [stderr]    Compiling algo-lib-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `UnionFind`
[INFO] [stdout]  --> src/data_structure/union_find.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct UnionFind {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data_structure/union_find.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(n: usize) -> UnionFind {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unite`
[INFO] [stdout]   --> src/data_structure/union_find.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn unite(&mut self, mut x: usize, mut y: usize) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_same`
[INFO] [stdout]   --> src/data_structure/union_find.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn is_same(&mut self, x: usize, y: usize) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_root`
[INFO] [stdout]   --> src/data_structure/union_find.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn get_root(&mut self, x: usize) -> usize {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_size`
[INFO] [stdout]   --> src/data_structure/union_find.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn get_size(&mut self, x: usize) -> usize {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_length_encode`
[INFO] [stdout]  --> src/string/run_length_encode.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn run_length_encode(s: Vec<char>) -> Vec<(char, usize)> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run_length_decode`
[INFO] [stdout]   --> src/string/run_length_encode.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn run_length_decode(code: Vec<(char, usize)>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `Command { std: "docker" "inspect" "4f98e1868297533b7fd2e5520b33dfe2ae76ab124e71e5959a5248c0d78d75aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f98e1868297533b7fd2e5520b33dfe2ae76ab124e71e5959a5248c0d78d75aa", kill_on_drop: false }`
[INFO] [stdout] 4f98e1868297533b7fd2e5520b33dfe2ae76ab124e71e5959a5248c0d78d75aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5b231ae2264939eedc5d79eb95fc2e6c88e3ac40162b6e104788914efd86e7f
[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" "a5b231ae2264939eedc5d79eb95fc2e6c88e3ac40162b6e104788914efd86e7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling algo-lib-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "a5b231ae2264939eedc5d79eb95fc2e6c88e3ac40162b6e104788914efd86e7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5b231ae2264939eedc5d79eb95fc2e6c88e3ac40162b6e104788914efd86e7f", kill_on_drop: false }`
[INFO] [stdout] a5b231ae2264939eedc5d79eb95fc2e6c88e3ac40162b6e104788914efd86e7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 85dfd8a6721db1c9be72b6cb0f9a2e2a4cdd8223aa22a7ad36d82733f20917cf
[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" "85dfd8a6721db1c9be72b6cb0f9a2e2a4cdd8223aa22a7ad36d82733f20917cf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/algo_lib_rust-2c34ad45a8fe4d5e)
[INFO] [stdout] running 2 tests
[INFO] [stdout] test data_structure::union_find::union_find_test ... ok
[INFO] [stdout] test string::run_length_encode::run_length_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "85dfd8a6721db1c9be72b6cb0f9a2e2a4cdd8223aa22a7ad36d82733f20917cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85dfd8a6721db1c9be72b6cb0f9a2e2a4cdd8223aa22a7ad36d82733f20917cf", kill_on_drop: false }`
[INFO] [stdout] 85dfd8a6721db1c9be72b6cb0f9a2e2a4cdd8223aa22a7ad36d82733f20917cf