[INFO] fetching crate rust-lapper 0.3.9...
[INFO] checking rust-lapper-0.3.9 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate rust-lapper 0.3.9 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rust-lapper 0.3.9 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rust-lapper 0.3.9
[INFO] finished tweaking crates.io crate rust-lapper 0.3.9
[INFO] tweaked toml for crates.io crate rust-lapper 0.3.9 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 71e401f4b9eb479a329cb9e3ec81eefccd2cacf734906ee3e01d06c65deb862d
[INFO] running `"docker" "start" "-a" "71e401f4b9eb479a329cb9e3ec81eefccd2cacf734906ee3e01d06c65deb862d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling feature-probe v0.1.1
[INFO] [stderr]    Compiling bio v0.28.2
[INFO] [stderr]     Checking strum v0.13.0
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]     Checking rust-lapper v0.3.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking cpu-time v0.1.0
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking ndarray v0.12.1
[INFO] [stderr]    Compiling strum_macros v0.13.0
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking bio-types v0.5.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking multimap v0.4.0
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking nested_intervals v0.2.0
[INFO] [stderr]    Compiling bv v0.10.0
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr] warning: unused import: `criterion::black_box`
[INFO] [stderr]  --> benches/lapper_benchmark.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use criterion::black_box;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::prelude::*`
[INFO] [stderr]  --> benches/lapper_benchmark.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> benches/lapper_benchmark.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `cpu_time::ProcessTime`
[INFO] [stderr]   --> benches/lapper_benchmark.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use cpu_time::ProcessTime;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> benches/lapper_benchmark.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     for i in 0..n {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nested_other_interval_set`
[INFO] [stderr]   --> benches/lapper_benchmark.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let mut nested_other_interval_set = IntervalSet::new(&nested_other_intervals).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_nested_other_interval_set`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> benches/lapper_benchmark.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |     let mut nested_other_interval_set = IntervalSet::new(&nested_other_intervals).unwrap();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 24.87s
[INFO] running `"docker" "inspect" "71e401f4b9eb479a329cb9e3ec81eefccd2cacf734906ee3e01d06c65deb862d"`
[INFO] running `"docker" "rm" "-f" "71e401f4b9eb479a329cb9e3ec81eefccd2cacf734906ee3e01d06c65deb862d"`
[INFO] [stdout] 71e401f4b9eb479a329cb9e3ec81eefccd2cacf734906ee3e01d06c65deb862d