[INFO] updating cached repository https://github.com/3c1u/nareport01
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8f72dedee7507d23a486d20f0299646b7dd56fc8
[INFO] checking 3c1u/nareport01 against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2F3c1u%2Fnareport01" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/3c1u/nareport01 on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/3c1u/nareport01
[INFO] finished tweaking git repo https://github.com/3c1u/nareport01
[INFO] tweaked toml for git repo https://github.com/3c1u/nareport01 written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/3c1u/nareport01 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9b5dd6b5e64ba95dc7aaf707ebcc2f8417c9b6085ae07a901740e863b7d238a8
[INFO] running `"docker" "start" "-a" "9b5dd6b5e64ba95dc7aaf707ebcc2f8417c9b6085ae07a901740e863b7d238a8"`
[INFO] [stderr]    Compiling libm v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking num-complex v0.2.1
[INFO] [stderr]     Checking alga v0.9.1
[INFO] [stderr]     Checking nalgebra v0.18.0
[INFO] [stderr]     Checking yp01_program v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `solve_na`
[INFO] [stderr]  --> src/nalgebra_solver.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn solve_na<T: AsRef<[f64]>>(a: &[T], b: &[f64], ans: &mut [f64]) -> Option<()> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve_na`
[INFO] [stderr]  --> src/nalgebra_solver.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn solve_na<T: AsRef<[f64]>>(a: &[T], b: &[f64], ans: &mut [f64]) -> Option<()> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.32s
[INFO] running `"docker" "inspect" "9b5dd6b5e64ba95dc7aaf707ebcc2f8417c9b6085ae07a901740e863b7d238a8"`
[INFO] running `"docker" "rm" "-f" "9b5dd6b5e64ba95dc7aaf707ebcc2f8417c9b6085ae07a901740e863b7d238a8"`
[INFO] [stdout] 9b5dd6b5e64ba95dc7aaf707ebcc2f8417c9b6085ae07a901740e863b7d238a8