[INFO] crate competitive-programming-rs 0.7.0 is already in cache
[INFO] checking competitive-programming-rs-0.7.0 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66852
[INFO] extracting crate competitive-programming-rs 0.7.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate competitive-programming-rs 0.7.0 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate competitive-programming-rs 0.7.0
[INFO] finished tweaking crates.io crate competitive-programming-rs 0.7.0
[INFO] tweaked toml for crates.io crate competitive-programming-rs 0.7.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] fbc16b82088b9efcb469e9457e5f21a76b2722f52c5f8557031a48c8adfa84d5
[INFO] running `"docker" "start" "-a" "fbc16b82088b9efcb469e9457e5f21a76b2722f52c5f8557031a48c8adfa84d5"`
[INFO] [stderr]     Checking competitive-programming-rs v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never read: `is_reversed`
[INFO] [stderr]   --> src/graph/min_cost_flow.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         is_reversed: bool,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calc_z_array`
[INFO] [stderr]  --> src/string/z_algorithm.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 |     pub fn calc_z_array<T: PartialEq>(s: &[T]) -> Vec<usize> {
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ma`
[INFO] [stderr]   --> src/math/chinese_remainder_theorem.rs:50:21
[INFO] [stderr]    |
[INFO] [stderr] 50 |             let (a, ma) = chinese_remainder_theorem(&b, &m).unwrap();
[INFO] [stderr]    |                     ^^ help: consider prefixing with an underscore: `_ma`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `is_reversed`
[INFO] [stderr]   --> src/graph/min_cost_flow.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         is_reversed: bool,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `"docker" "inspect" "fbc16b82088b9efcb469e9457e5f21a76b2722f52c5f8557031a48c8adfa84d5"`
[INFO] running `"docker" "rm" "-f" "fbc16b82088b9efcb469e9457e5f21a76b2722f52c5f8557031a48c8adfa84d5"`
[INFO] [stdout] fbc16b82088b9efcb469e9457e5f21a76b2722f52c5f8557031a48c8adfa84d5