[INFO] cloning repository https://github.com/stmtk1/100knock-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stmtk1/100knock-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstmtk1%2F100knock-rs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstmtk1%2F100knock-rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7f8e4e57476bc745e15cd69a47777bcde043dfb4
[INFO] checking stmtk1/100knock-rs against try#96b3c169cd2d8959926fa240f10342f1659f8ae3 for pr-71896
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstmtk1%2F100knock-rs" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stmtk1/100knock-rs on toolchain 96b3c169cd2d8959926fa240f10342f1659f8ae3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/stmtk1/100knock-rs
[INFO] finished tweaking git repo https://github.com/stmtk1/100knock-rs
[INFO] tweaked toml for git repo https://github.com/stmtk1/100knock-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/stmtk1/100knock-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cabocha v0.2.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6c5500b44b9cc7998883ef2beed4c3a910709fff8c3e112e94b238575026bbaa
[INFO] running `"docker" "start" "-a" "6c5500b44b9cc7998883ef2beed4c3a910709fff8c3e112e94b238575026bbaa"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking cabocha v0.2.0
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking nlp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `noun`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let noun: &Chunk = (&chunks).into_iter().rev().find(|w| match w.parent { None => false, Some(pid) => pid == verb.id }).unwrap();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_noun`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pid`
[INFO] [stderr]   --> src/main.rs:15:21
[INFO] [stderr]    |
[INFO] [stderr] 15 |         if let Some(pid) = chunk.parent {
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_pid`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `noun`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let noun: &Chunk = (&chunks).into_iter().rev().find(|w| match w.parent { None => false, Some(pid) => pid == verb.id }).unwrap();
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_noun`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pid`
[INFO] [stderr]   --> src/main.rs:15:21
[INFO] [stderr]    |
[INFO] [stderr] 15 |         if let Some(pid) = chunk.parent {
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_pid`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_words`
[INFO] [stderr]    --> src/main.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     fn print_words(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_last_pos`
[INFO] [stderr]    --> src/main.rs:151:6
[INFO] [stderr]     |
[INFO] [stderr] 151 |      fn find_last_pos(&self, pos: String) -> Option<Word> {
[INFO] [stderr]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_words`
[INFO] [stderr]    --> src/main.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     fn print_words(&self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_last_pos`
[INFO] [stderr]    --> src/main.rs:151:6
[INFO] [stderr]     |
[INFO] [stderr] 151 |      fn find_last_pos(&self, pos: String) -> Option<Word> {
[INFO] [stderr]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.65s
[INFO] running `"docker" "inspect" "6c5500b44b9cc7998883ef2beed4c3a910709fff8c3e112e94b238575026bbaa"`
[INFO] running `"docker" "rm" "-f" "6c5500b44b9cc7998883ef2beed4c3a910709fff8c3e112e94b238575026bbaa"`
[INFO] [stdout] 6c5500b44b9cc7998883ef2beed4c3a910709fff8c3e112e94b238575026bbaa