[INFO] updating cached repository https://github.com/dyoshikawa/algo-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/dyoshikawa/algo-rust
[INFO] [stderr]    74e8b2a..91ffd06  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 91ffd06bc4483467a8768cd6e703879cf0d4befc
[INFO] checking dyoshikawa/algo-rust against try#9ff4d07208097950831ed4ea9d76feb1eafc8baa for pr-69340
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyoshikawa%2Falgo-rust" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dyoshikawa/algo-rust on toolchain 9ff4d07208097950831ed4ea9d76feb1eafc8baa
[INFO] running `"/workspace/cargo-home/bin/cargo" "+9ff4d07208097950831ed4ea9d76feb1eafc8baa" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dyoshikawa/algo-rust
[INFO] finished tweaking git repo https://github.com/dyoshikawa/algo-rust
[INFO] tweaked toml for git repo https://github.com/dyoshikawa/algo-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/dyoshikawa/algo-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+9ff4d07208097950831ed4ea9d76feb1eafc8baa" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+9ff4d07208097950831ed4ea9d76feb1eafc8baa" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b201820150888c8c992eae7baf6cbd633565bb3bff94cbf1f49c98af41ab17f8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "b201820150888c8c992eae7baf6cbd633565bb3bff94cbf1f49c98af41ab17f8"`
[INFO] [stderr]     Checking algo-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `Undercard`
[INFO] [stderr]  --> src/watabe/p142.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Undercard {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/watabe/p142.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn new(n: i32, a_arr: Vec<i32>) -> Self {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rec`
[INFO] [stderr]   --> src/watabe/p142.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn rec(&mut self, i: i32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `main`
[INFO] [stderr]   --> src/watabe/p142.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn main(&mut self) -> Vec<Vec<bool>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `a_arr`
[INFO] [stderr]  --> src/watabe/p142.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     a_arr: Vec<i32>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "b201820150888c8c992eae7baf6cbd633565bb3bff94cbf1f49c98af41ab17f8"`
[INFO] running `"docker" "rm" "-f" "b201820150888c8c992eae7baf6cbd633565bb3bff94cbf1f49c98af41ab17f8"`
[INFO] [stdout] b201820150888c8c992eae7baf6cbd633565bb3bff94cbf1f49c98af41ab17f8