[INFO] fetching crate rust-lapper 0.4.4...
[INFO] checking rust-lapper-0.4.4 against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] extracting crate rust-lapper 0.4.4 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rust-lapper 0.4.4 on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rust-lapper 0.4.4
[INFO] finished tweaking crates.io crate rust-lapper 0.4.4
[INFO] tweaked toml for crates.io crate rust-lapper 0.4.4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate rust-lapper 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2031c9d99d44b38f24643dcb329db71470f45a98bbedf2f0728973af245d4d05
[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" "2031c9d99d44b38f24643dcb329db71470f45a98bbedf2f0728973af245d4d05"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust-lapper v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cpu-time v0.1.0
[INFO] [stderr]     Checking criterion v0.3.1
[INFO] [stderr] warning: unused import: `cpu_time::ProcessTime`
[INFO] [stderr]  --> benches/lapper_benchmark.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use cpu_time::ProcessTime;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[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] 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::ops::Range`
[INFO] [stderr]   --> benches/lapper_benchmark.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::ops::Range;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> benches/lapper_benchmark.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> benches/lapper_benchmark.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     for i in 0..n {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 7.74s
[INFO] running `"docker" "inspect" "2031c9d99d44b38f24643dcb329db71470f45a98bbedf2f0728973af245d4d05"`
[INFO] running `"docker" "rm" "-f" "2031c9d99d44b38f24643dcb329db71470f45a98bbedf2f0728973af245d4d05"`
[INFO] [stdout] 2031c9d99d44b38f24643dcb329db71470f45a98bbedf2f0728973af245d4d05