[INFO] fetching crate peroxide 0.19.3...
[INFO] checking peroxide-0.19.3 against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] extracting crate peroxide 0.19.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate peroxide 0.19.3 on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate peroxide 0.19.3
[INFO] finished tweaking crates.io crate peroxide 0.19.3
[INFO] tweaked toml for crates.io crate peroxide 0.19.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate peroxide 0.19.3 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bc20830f665bf4284912527bc3bf0cf86d144634671e8b99f657e8d86077d21e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "bc20830f665bf4284912527bc3bf0cf86d144634671e8b99f657e8d86077d21e"`
[INFO] [stderr]    Compiling peroxide v0.19.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr] warning: unused variable: `nu`
[INFO] [stderr]    --> src/statistics/dist.rs:390:22
[INFO] [stderr]     |
[INFO] [stderr] 390 |             StudentT(nu) => 0f64,
[INFO] [stderr]     |                      ^^ help: consider prefixing with an underscore: `_nu`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nu`
[INFO] [stderr]    --> src/statistics/dist.rs:390:22
[INFO] [stderr]     |
[INFO] [stderr] 390 |             StudentT(nu) => 0f64,
[INFO] [stderr]     |                      ^^ help: consider prefixing with an underscore: `_nu`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> examples/ode_gl4.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let x = result.col(0);
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]   --> examples/ode_gl4.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let y = result.col(1);
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::remove_file`
[INFO] [stderr]  --> tests/data_frame.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::remove_file;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `results`
[INFO] [stderr]   --> examples/ode_test_lorenz.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let results = ex_test.integrate();
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_results`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `results2`
[INFO] [stderr]   --> examples/ode_test_lorenz.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let results2 = ex_test2.integrate();
[INFO] [stderr]    |         ^^^^^^^^ help: consider prefixing with an underscore: `_results2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> examples/ode_test_rk4.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let result = ode_solver.integrate();
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.88s
[INFO] running `"docker" "inspect" "bc20830f665bf4284912527bc3bf0cf86d144634671e8b99f657e8d86077d21e"`
[INFO] running `"docker" "rm" "-f" "bc20830f665bf4284912527bc3bf0cf86d144634671e8b99f657e8d86077d21e"`
[INFO] [stdout] bc20830f665bf4284912527bc3bf0cf86d144634671e8b99f657e8d86077d21e