[INFO] fetching crate rstat 0.6.0...
[INFO] checking rstat-0.6.0 against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] extracting crate rstat 0.6.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rstat 0.6.0 on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rstat 0.6.0
[INFO] finished tweaking crates.io crate rstat 0.6.0
[INFO] tweaked toml for crates.io crate rstat 0.6.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lapacke-sys v0.1.4
[INFO] [stderr]   Downloaded cauchy v0.2.2
[INFO] [stderr]   Downloaded lapacke v0.2.0
[INFO] [stderr]   Downloaded ndarray v0.13.1
[INFO] [stderr]   Downloaded lapack-src v0.6.0
[INFO] [stderr]   Downloaded blas-src v0.2.1
[INFO] [stderr]   Downloaded cblas-sys v0.1.4
[INFO] [stderr]   Downloaded blas-src v0.6.1
[INFO] [stderr]   Downloaded ndarray-linalg v0.12.1
[INFO] [stderr]   Downloaded spaces v5.0.0
[INFO] [stderr]   Downloaded special-fun v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "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] 2a85eb2c4311a3816ffe0512c3ce154b67075149aa38514ee7d96dfa19898205
[INFO] running `Command { std: "docker" "start" "-a" "2a85eb2c4311a3816ffe0512c3ce154b67075149aa38514ee7d96dfa19898205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a85eb2c4311a3816ffe0512c3ce154b67075149aa38514ee7d96dfa19898205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a85eb2c4311a3816ffe0512c3ce154b67075149aa38514ee7d96dfa19898205", kill_on_drop: false }`
[INFO] [stdout] 2a85eb2c4311a3816ffe0512c3ce154b67075149aa38514ee7d96dfa19898205
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e726750f56e106c200d577a868c87ecc287bb058a4f1a24d628ab86c3c6c371
[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" "6e726750f56e106c200d577a868c87ecc287bb058a4f1a24d628ab86c3c6c371", kill_on_drop: false }`
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling special-fun v0.2.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking spaces v5.0.0
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking rstat v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/univariate/rayleigh.rs:13:28
[INFO] [stdout]    |
[INFO] [stdout] 13 | const FOUR_MINUS_PI: f64 = (4.0 - PI);
[INFO] [stdout]    |                            ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/univariate/rayleigh.rs:13:28
[INFO] [stdout]    |
[INFO] [stdout] 13 | const FOUR_MINUS_PI: f64 = (4.0 - PI);
[INFO] [stdout]    |                            ^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `factorial_exact`
[INFO] [stdout]  --> src/utils.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn factorial_exact(n: u64) -> u64 { (1..=n).product() }
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `factorial`
[INFO] [stdout]  --> src/utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn factorial(n: u64) -> u64 {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `factorial_exact`
[INFO] [stdout]  --> src/utils.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn factorial_exact(n: u64) -> u64 { (1..=n).product() }
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `factorial`
[INFO] [stdout]  --> src/utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn factorial(n: u64) -> u64 {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.80s
[INFO] running `Command { std: "docker" "inspect" "6e726750f56e106c200d577a868c87ecc287bb058a4f1a24d628ab86c3c6c371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e726750f56e106c200d577a868c87ecc287bb058a4f1a24d628ab86c3c6c371", kill_on_drop: false }`
[INFO] [stdout] 6e726750f56e106c200d577a868c87ecc287bb058a4f1a24d628ab86c3c6c371