[INFO] fetching crate hibitgraph 0.1.0...
[INFO] checking hibitgraph-0.1.0 against master#f9fdf642bab2bfcabe1829a4c82aaf055330661b for pr-73102
[INFO] extracting crate hibitgraph 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate hibitgraph 0.1.0 on toolchain f9fdf642bab2bfcabe1829a4c82aaf055330661b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate hibitgraph 0.1.0
[INFO] finished tweaking crates.io crate hibitgraph 0.1.0
[INFO] tweaked toml for crates.io crate hibitgraph 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "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] 29b967d95f00f949b909afeea7345f41c8b231fe8f259cf724fac8d163df7e76
[INFO] running `"docker" "start" "-a" "29b967d95f00f949b909afeea7345f41c8b231fe8f259cf724fac8d163df7e76"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]     Checking hibitgraph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `DfsIterator`
[INFO] [stderr]    --> src/lib.rs:268:27
[INFO] [stderr]     |
[INFO] [stderr] 268 |     use super::{BitGraph, DfsIterator};
[INFO] [stderr]     |                           ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/lib.rs:246:17
[INFO] [stderr]     |
[INFO] [stderr] 246 |             let mut r = None;
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `r` is never read
[INFO] [stderr]    --> src/lib.rs:246:17
[INFO] [stderr]     |
[INFO] [stderr] 246 |             let mut r = None;
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/lib.rs:287:13
[INFO] [stderr]     |
[INFO] [stderr] 287 |         for i in 0..capacity {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:274:13
[INFO] [stderr]     |
[INFO] [stderr] 274 |         let mut c = BitGraph::with_capacity(capacity as u32);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:283:13
[INFO] [stderr]     |
[INFO] [stderr] 283 |         let mut c = BitGraph::complete(capacity as u32);
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.51s
[INFO] running `"docker" "inspect" "29b967d95f00f949b909afeea7345f41c8b231fe8f259cf724fac8d163df7e76"`
[INFO] running `"docker" "rm" "-f" "29b967d95f00f949b909afeea7345f41c8b231fe8f259cf724fac8d163df7e76"`
[INFO] [stdout] 29b967d95f00f949b909afeea7345f41c8b231fe8f259cf724fac8d163df7e76