[INFO] fetching crate xdlol 0.0.0...
[INFO] checking xdlol-0.0.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate xdlol 0.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate xdlol 0.0.0 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xdlol 0.0.0
[INFO] finished tweaking crates.io crate xdlol 0.0.0
[INFO] tweaked toml for crates.io crate xdlol 0.0.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b5090f43a75e0e2e98a1820353af22b1e7413baeef5dc4f3a53aa49d9084c28
[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" "5b5090f43a75e0e2e98a1820353af22b1e7413baeef5dc4f3a53aa49d9084c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b5090f43a75e0e2e98a1820353af22b1e7413baeef5dc4f3a53aa49d9084c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b5090f43a75e0e2e98a1820353af22b1e7413baeef5dc4f3a53aa49d9084c28", kill_on_drop: false }`
[INFO] [stdout] 5b5090f43a75e0e2e98a1820353af22b1e7413baeef5dc4f3a53aa49d9084c28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73d237ba5e0349789ab95bbc8ccde85e41912d53fb8f5735be251c4dc446c6f2
[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" "73d237ba5e0349789ab95bbc8ccde85e41912d53fb8f5735be251c4dc446c6f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling const_fn v0.4.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking libc v0.2.81
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking statrs v0.9.0
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking xdlol v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `p_value`
[INFO] [stdout]    --> src/statistics/chi_square.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 | pub fn p_value(dof: u64, critical_value: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K` should have a snake case name
[INFO] [stdout]    --> src/statistics/chi_square.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let K: f64 = dof as f64 * 0.5;
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/statistics/chi_square.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let X: f64 = critical_value * 0.5;
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `K` should have a snake case name
[INFO] [stdout]    --> src/statistics/chi_square.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |     let K: f64 = dof as f64 * 0.5;
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `k`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/statistics/chi_square.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let X: f64 = critical_value * 0.5;
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntoParallelRefIterator`
[INFO] [stdout]   --> benches/frequency_map.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 | use rayon::iter::{IntoParallelRefIterator, ParallelIterator};
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParallelIterator`
[INFO] [stdout]   --> benches/frequency_map.rs:15:44
[INFO] [stdout]    |
[INFO] [stdout] 15 | use rayon::iter::{IntoParallelRefIterator, ParallelIterator};
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.14s
[INFO] running `Command { std: "docker" "inspect" "73d237ba5e0349789ab95bbc8ccde85e41912d53fb8f5735be251c4dc446c6f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73d237ba5e0349789ab95bbc8ccde85e41912d53fb8f5735be251c4dc446c6f2", kill_on_drop: false }`
[INFO] [stdout] 73d237ba5e0349789ab95bbc8ccde85e41912d53fb8f5735be251c4dc446c6f2