[INFO] fetching crate xdlol 0.0.0...
[INFO] checking xdlol-0.0.0 against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] extracting crate xdlol 0.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate xdlol 0.0.0 on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clippy_lints v0.0.169
[INFO] [stderr]   Downloaded clippy v0.0.169
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "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] dc3e9210a7749261598eaab59baecce136ed9bed0bdc4e89c018c8122745d757
[INFO] running `Command { std: "docker" "start" "-a" "dc3e9210a7749261598eaab59baecce136ed9bed0bdc4e89c018c8122745d757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc3e9210a7749261598eaab59baecce136ed9bed0bdc4e89c018c8122745d757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc3e9210a7749261598eaab59baecce136ed9bed0bdc4e89c018c8122745d757", kill_on_drop: false }`
[INFO] [stdout] dc3e9210a7749261598eaab59baecce136ed9bed0bdc4e89c018c8122745d757
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50e5bf333c5957d443e5f9f53123d748fbd99fd63511a6decb7e715f2502206f
[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" "50e5bf333c5957d443e5f9f53123d748fbd99fd63511a6decb7e715f2502206f", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking statrs v0.9.0
[INFO] [stderr]     Checking rayon-core v1.7.1
[INFO] [stderr]     Checking float-cmp v0.4.0
[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: 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] [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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.70s
[INFO] running `Command { std: "docker" "inspect" "50e5bf333c5957d443e5f9f53123d748fbd99fd63511a6decb7e715f2502206f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50e5bf333c5957d443e5f9f53123d748fbd99fd63511a6decb7e715f2502206f", kill_on_drop: false }`
[INFO] [stdout] 50e5bf333c5957d443e5f9f53123d748fbd99fd63511a6decb7e715f2502206f