[INFO] fetching crate prcn_lib 0.2.4...
[INFO] checking prcn_lib-0.2.4 against try#f88e9a4452e792c29632101b348a1df9876d45cd for pr-70087
[INFO] extracting crate prcn_lib 0.2.4 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate prcn_lib 0.2.4 on toolchain f88e9a4452e792c29632101b348a1df9876d45cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f88e9a4452e792c29632101b348a1df9876d45cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate prcn_lib 0.2.4
[INFO] finished tweaking crates.io crate prcn_lib 0.2.4
[INFO] tweaked toml for crates.io crate prcn_lib 0.2.4 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate prcn_lib 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f88e9a4452e792c29632101b348a1df9876d45cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+f88e9a4452e792c29632101b348a1df9876d45cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 260b9207c341824807f05f9aed98bd15426c89579dfa43f68133dccc29b39c53
[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" "260b9207c341824807f05f9aed98bd15426c89579dfa43f68133dccc29b39c53"`
[INFO] [stderr]    Compiling proconio-derive v0.1.6
[INFO] [stderr]     Checking proconio v0.3.6
[INFO] [stderr]     Checking prcn_lib v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `BitOrAssign`, `BitOr`, `BitXorAssign`, `BitXor`
[INFO] [stderr]  --> src/bitset/def.rs:2:87
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::ops::{Shl, ShlAssign, Shr, ShrAssign, Index, IndexMut, BitAnd, BitAndAssign, BitOr, BitOrAssign, BitXor, BitXorAssign};
[INFO] [stderr]   |                                                                                       ^^^^^  ^^^^^^^^^^^  ^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/math/tools.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |     let a = vec![1, 2, 3, 4, 5,];
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `iet`
[INFO] [stderr]    --> src/math/tools.rs:146:4
[INFO] [stderr]     |
[INFO] [stderr] 146 | fn iet() {
[INFO] [stderr]     |    ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]  --> src/graph/dfs.rs:2:4
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn dfs(g: &[Vec<usize>], now: usize, seen: &mut Vec<bool>) -> Vec<bool> {
[INFO] [stderr]   |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Graph`
[INFO] [stderr]  --> src/graph/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | type Graph = Vec<Vec<usize>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BitOrAssign`, `BitOr`, `BitXorAssign`, `BitXor`
[INFO] [stderr]  --> src/bitset/def.rs:2:87
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::ops::{Shl, ShlAssign, Shr, ShrAssign, Index, IndexMut, BitAnd, BitAndAssign, BitOr, BitOrAssign, BitXor, BitXorAssign};
[INFO] [stderr]   |                                                                                       ^^^^^  ^^^^^^^^^^^  ^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/math/tools.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |     let a = vec![1, 2, 3, 4, 5,];
[INFO] [stderr]     |         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `iet`
[INFO] [stderr]    --> src/math/tools.rs:146:4
[INFO] [stderr]     |
[INFO] [stderr] 146 | fn iet() {
[INFO] [stderr]     |    ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]  --> src/graph/dfs.rs:2:4
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn dfs(g: &[Vec<usize>], now: usize, seen: &mut Vec<bool>) -> Vec<bool> {
[INFO] [stderr]   |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Graph`
[INFO] [stderr]  --> src/graph/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | type Graph = Vec<Vec<usize>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.18s
[INFO] running `"docker" "inspect" "260b9207c341824807f05f9aed98bd15426c89579dfa43f68133dccc29b39c53"`
[INFO] running `"docker" "rm" "-f" "260b9207c341824807f05f9aed98bd15426c89579dfa43f68133dccc29b39c53"`
[INFO] [stdout] 260b9207c341824807f05f9aed98bd15426c89579dfa43f68133dccc29b39c53