[INFO] fetching crate tradestats 0.1.14...
[INFO] checking tradestats-0.1.14 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate tradestats 0.1.14 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate tradestats 0.1.14 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tradestats 0.1.14
[INFO] finished tweaking crates.io crate tradestats 0.1.14
[INFO] tweaked toml for crates.io crate tradestats 0.1.14 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 56 packages
[INFO] [stderr]       Adding nalgebra v0.29.0 (latest: v0.32.5)
[INFO] [stderr]       Adding nalgebra-macros v0.1.0 (latest: v0.2.1)
[INFO] [stderr]       Adding simba v0.6.0 (latest: v0.8.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding ts-rs v6.2.1 (latest: v8.1.0)
[INFO] [stderr]       Adding ts-rs-macros v6.2.0 (latest: v8.1.0)
[INFO] [stderr]       Adding unit-root v0.5.0 (latest: v0.6.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unit-root v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10e692a61d015d998e516029f029421ba306bb09e8c7d2d52b834b03ec5b265f
[INFO] running `Command { std: "docker" "start" "-a" "10e692a61d015d998e516029f029421ba306bb09e8c7d2d52b834b03ec5b265f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10e692a61d015d998e516029f029421ba306bb09e8c7d2d52b834b03ec5b265f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10e692a61d015d998e516029f029421ba306bb09e8c7d2d52b834b03ec5b265f", kill_on_drop: false }`
[INFO] [stdout] 10e692a61d015d998e516029f029421ba306bb09e8c7d2d52b834b03ec5b265f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3656577000eb5afbd303a58b0df934341f63dfe0bbe9056433d398dfbb48caa
[INFO] running `Command { std: "docker" "start" "-a" "f3656577000eb5afbd303a58b0df934341f63dfe0bbe9056433d398dfbb48caa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking bytemuck v1.15.0
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking safe_arch v0.7.1
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking wide v0.7.15
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking simba v0.8.1
[INFO] [stderr]     Checking simba v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]    Compiling nalgebra-macros v0.2.1
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]    Compiling ts-rs-macros v6.2.0
[INFO] [stderr]     Checking ts-rs v6.2.1
[INFO] [stderr]     Checking nalgebra v0.29.0
[INFO] [stderr]     Checking nalgebra v0.32.5
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking unit-root v0.5.0
[INFO] [stderr]     Checking statrs v0.16.0
[INFO] [stderr]     Checking tradestats v0.1.14 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `statrs` is imported redundantly
[INFO] [stdout]  --> src/simple.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use statrs;
[INFO] [stdout]   |     ^^^^^^ the item `statrs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `statrs` is imported redundantly
[INFO] [stdout]  --> src/simple.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use statrs;
[INFO] [stdout]   |     ^^^^^^ the item `statrs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `residuals`
[INFO] [stdout]    --> src/simple.rs:125:28
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let ((beta_0, beta_1), residuals) = simple_linear_regression(&x, &y).unwrap();
[INFO] [stdout]     |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_residuals`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/kalman.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     dbg!(res);
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `dbg` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.78s
[INFO] running `Command { std: "docker" "inspect" "f3656577000eb5afbd303a58b0df934341f63dfe0bbe9056433d398dfbb48caa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3656577000eb5afbd303a58b0df934341f63dfe0bbe9056433d398dfbb48caa", kill_on_drop: false }`
[INFO] [stdout] f3656577000eb5afbd303a58b0df934341f63dfe0bbe9056433d398dfbb48caa