[INFO] fetching crate rust-lapper 0.4.4...
[INFO] checking rust-lapper-0.4.4 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate rust-lapper 0.4.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rust-lapper 0.4.4 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-4/source/Cargo.toml
[INFO] crate crates.io crate rust-lapper 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cpu-time v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 83b7cbdf257f568cdb83498d0ed0273599ac256255f7be539a6abca97babc8b4
[INFO] running `Command { std: "docker" "start" "-a" "83b7cbdf257f568cdb83498d0ed0273599ac256255f7be539a6abca97babc8b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83b7cbdf257f568cdb83498d0ed0273599ac256255f7be539a6abca97babc8b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83b7cbdf257f568cdb83498d0ed0273599ac256255f7be539a6abca97babc8b4", kill_on_drop: false }`
[INFO] [stdout] 83b7cbdf257f568cdb83498d0ed0273599ac256255f7be539a6abca97babc8b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffba6bdc945dab3aef83a8056548225891a11eceb167161d417124d5d7d29d6b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ffba6bdc945dab3aef83a8056548225891a11eceb167161d417124d5d7d29d6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking oorandom v11.1.0
[INFO] [stderr]     Checking rust-lapper v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking cpu-time v0.1.0
[INFO] [stderr]     Checking tinytemplate v1.0.3
[INFO] [stderr]     Checking criterion-plot v0.4.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking plotters v0.2.12
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking criterion v0.3.1
[INFO] [stdout] warning: unused import: `cpu_time::ProcessTime`
[INFO] [stdout]  --> benches/lapper_benchmark.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cpu_time::ProcessTime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `criterion::black_box`
[INFO] [stdout]  --> benches/lapper_benchmark.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use criterion::black_box;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::prelude::*`
[INFO] [stdout]  --> benches/lapper_benchmark.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Range`
[INFO] [stdout]   --> benches/lapper_benchmark.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::ops::Range;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> benches/lapper_benchmark.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> benches/lapper_benchmark.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     for i in 0..n {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.98s
[INFO] running `Command { std: "docker" "inspect" "ffba6bdc945dab3aef83a8056548225891a11eceb167161d417124d5d7d29d6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffba6bdc945dab3aef83a8056548225891a11eceb167161d417124d5d7d29d6b", kill_on_drop: false }`
[INFO] [stdout] ffba6bdc945dab3aef83a8056548225891a11eceb167161d417124d5d7d29d6b