[INFO] cloning repository https://github.com/dgryski/numerical-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dgryski/numerical-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgryski%2Fnumerical-rs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgryski%2Fnumerical-rs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c95217e6e1e2ca1af7fd50661323f99d20c21070
[INFO] checking dgryski/numerical-rs against try#1a399c10897767c36d147199696c96f193034e49 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgryski%2Fnumerical-rs" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dgryski/numerical-rs on toolchain 1a399c10897767c36d147199696c96f193034e49
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a399c10897767c36d147199696c96f193034e49" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dgryski/numerical-rs
[INFO] finished tweaking git repo https://github.com/dgryski/numerical-rs
[INFO] tweaked toml for git repo https://github.com/dgryski/numerical-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/dgryski/numerical-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a399c10897767c36d147199696c96f193034e49" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1a399c10897767c36d147199696c96f193034e49" "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] 77118bc30be017479f0e0e2486fbae27ea8dfdb91c3c1b804cb2f499c204149e
[INFO] running `"docker" "start" "-a" "77118bc30be017479f0e0e2486fbae27ea8dfdb91c3c1b804cb2f499c204149e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking numerical-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable `xOld` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:222:13
[INFO] [stderr]     |
[INFO] [stderr] 222 |     let mut xOld = 0.0;
[INFO] [stderr]     |             ^^^^ help: convert the identifier to snake case: `x_old`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable `xOld` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:222:13
[INFO] [stderr]     |
[INFO] [stderr] 222 |     let mut xOld = 0.0;
[INFO] [stderr]     |             ^^^^ help: convert the identifier to snake case: `x_old`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "77118bc30be017479f0e0e2486fbae27ea8dfdb91c3c1b804cb2f499c204149e"`
[INFO] running `"docker" "rm" "-f" "77118bc30be017479f0e0e2486fbae27ea8dfdb91c3c1b804cb2f499c204149e"`
[INFO] [stdout] 77118bc30be017479f0e0e2486fbae27ea8dfdb91c3c1b804cb2f499c204149e