[INFO] fetching crate mathol 0.1.1...
[INFO] checking mathol-0.1.1 against try#879b8cb7dc2ad9102994457e73cf78d124926ea5 for pr-73084
[INFO] extracting crate mathol 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate mathol 0.1.1 on toolchain 879b8cb7dc2ad9102994457e73cf78d124926ea5
[INFO] running `"/workspace/cargo-home/bin/cargo" "+879b8cb7dc2ad9102994457e73cf78d124926ea5" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mathol 0.1.1
[INFO] finished tweaking crates.io crate mathol 0.1.1
[INFO] tweaked toml for crates.io crate mathol 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+879b8cb7dc2ad9102994457e73cf78d124926ea5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+879b8cb7dc2ad9102994457e73cf78d124926ea5" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+879b8cb7dc2ad9102994457e73cf78d124926ea5" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 449c74d209dcc77c95c2dd46c4f3c327c0454c7b538b3202cfa13b69707ea9b1
[INFO] running `"docker" "start" "-a" "449c74d209dcc77c95c2dd46c4f3c327c0454c7b538b3202cfa13b69707ea9b1"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking rand v0.4.6
[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 mathol v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/statistics/mod.rs:127:68
[INFO] [stderr]     |
[INFO] [stderr] 127 |             let a = data.iter().fold(T::zero(), |sum, x| sum + pow((*x - mean.unwrap()), 2));
[INFO] [stderr]     |                                                                    ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/statistics/mod.rs:127:68
[INFO] [stderr]     |
[INFO] [stderr] 127 |             let a = data.iter().fold(T::zero(), |sum, x| sum + pow((*x - mean.unwrap()), 2));
[INFO] [stderr]     |                                                                    ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.52s
[INFO] running `"docker" "inspect" "449c74d209dcc77c95c2dd46c4f3c327c0454c7b538b3202cfa13b69707ea9b1"`
[INFO] running `"docker" "rm" "-f" "449c74d209dcc77c95c2dd46c4f3c327c0454c7b538b3202cfa13b69707ea9b1"`
[INFO] [stdout] 449c74d209dcc77c95c2dd46c4f3c327c0454c7b538b3202cfa13b69707ea9b1