[INFO] fetching crate statslib 0.1.0...
[INFO] testing statslib-0.1.0 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate statslib 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate statslib 0.1.0 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate statslib 0.1.0
[INFO] finished tweaking crates.io crate statslib 0.1.0
[INFO] tweaked toml for crates.io crate statslib 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6f0ba2caee9fb9c87375dc7e41731d96595fd5bc49ed3211c037e156e4252ba
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d6f0ba2caee9fb9c87375dc7e41731d96595fd5bc49ed3211c037e156e4252ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6f0ba2caee9fb9c87375dc7e41731d96595fd5bc49ed3211c037e156e4252ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6f0ba2caee9fb9c87375dc7e41731d96595fd5bc49ed3211c037e156e4252ba", kill_on_drop: false }`
[INFO] [stdout] d6f0ba2caee9fb9c87375dc7e41731d96595fd5bc49ed3211c037e156e4252ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d579f96ad3ab6ebebdae23f1c3f439ce65af9c7df4bdb0a68af936cfcb7bbbbe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d579f96ad3ab6ebebdae23f1c3f439ce65af9c7df4bdb0a68af936cfcb7bbbbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling matrixmultiply v0.3.1
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling slog-async v2.6.0
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling simba v0.4.0
[INFO] [stderr]    Compiling slog-term v2.8.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling nalgebra v0.26.2
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling slog-json v2.3.0
[INFO] [stderr]    Compiling argmin v0.4.5
[INFO] [stderr]    Compiling statslib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ArrayStorage`, `Matrix2`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stdout]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParamsLM`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ParamsLM {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.11s
[INFO] running `Command { std: "docker" "inspect" "d579f96ad3ab6ebebdae23f1c3f439ce65af9c7df4bdb0a68af936cfcb7bbbbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d579f96ad3ab6ebebdae23f1c3f439ce65af9c7df4bdb0a68af936cfcb7bbbbe", kill_on_drop: false }`
[INFO] [stdout] d579f96ad3ab6ebebdae23f1c3f439ce65af9c7df4bdb0a68af936cfcb7bbbbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5d187ae5ba4df97d6dfa1d14988a1eeda8cf71bb83821b849c78a8b662874b6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f5d187ae5ba4df97d6dfa1d14988a1eeda8cf71bb83821b849c78a8b662874b6", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `ArrayStorage`, `Matrix2`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stdout]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParamsLM`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ParamsLM {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling statslib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ArrayStorage`, `Matrix2`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stdout]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParamsLM`
[INFO] [stdout]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct ParamsLM {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "f5d187ae5ba4df97d6dfa1d14988a1eeda8cf71bb83821b849c78a8b662874b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5d187ae5ba4df97d6dfa1d14988a1eeda8cf71bb83821b849c78a8b662874b6", kill_on_drop: false }`
[INFO] [stdout] f5d187ae5ba4df97d6dfa1d14988a1eeda8cf71bb83821b849c78a8b662874b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 01c537a15049211a99bed980b4a23d5dc017f3bfdc2ff37f2030cb7ff54846e6
[INFO] running `Command { std: "docker" "start" "-a" "01c537a15049211a99bed980b4a23d5dc017f3bfdc2ff37f2030cb7ff54846e6", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `ArrayStorage`, `Matrix2`
[INFO] [stderr]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stderr]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ParamsLM`
[INFO] [stderr]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct ParamsLM {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ArrayStorage`, `Matrix2`
[INFO] [stderr]  --> src/linear_models/simple_regression.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nalgebra::{ArrayStorage, Matrix2};
[INFO] [stderr]   |                ^^^^^^^^^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ParamsLM`
[INFO] [stderr]  --> src/linear_models/simple_regression.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct ParamsLM {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/statslib-c3ab707b4ab6f908)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests statslib
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "01c537a15049211a99bed980b4a23d5dc017f3bfdc2ff37f2030cb7ff54846e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01c537a15049211a99bed980b4a23d5dc017f3bfdc2ff37f2030cb7ff54846e6", kill_on_drop: false }`
[INFO] [stdout] 01c537a15049211a99bed980b4a23d5dc017f3bfdc2ff37f2030cb7ff54846e6