[INFO] fetching crate levenberg-marquardt 0.8.0...
[INFO] checking levenberg-marquardt-0.8.0 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate levenberg-marquardt 0.8.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate levenberg-marquardt 0.8.0 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate levenberg-marquardt 0.8.0
[INFO] finished tweaking crates.io crate levenberg-marquardt 0.8.0
[INFO] tweaked toml for crates.io crate levenberg-marquardt 0.8.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", 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] c9bbe929e83f3814b2d2679d06b8b033baafbe6714e67f1a80d91687810dc276
[INFO] running `Command { std: "docker" "start" "-a" "c9bbe929e83f3814b2d2679d06b8b033baafbe6714e67f1a80d91687810dc276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9bbe929e83f3814b2d2679d06b8b033baafbe6714e67f1a80d91687810dc276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9bbe929e83f3814b2d2679d06b8b033baafbe6714e67f1a80d91687810dc276", kill_on_drop: false }`
[INFO] [stdout] c9bbe929e83f3814b2d2679d06b8b033baafbe6714e67f1a80d91687810dc276
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44e12bf3ddf6e0b98abae052a24bda3b7522da954a09f36e03ec279ba06205b7
[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" "44e12bf3ddf6e0b98abae052a24bda3b7522da954a09f36e03ec279ba06205b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking sample-consensus v1.0.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking matrixmultiply v0.3.0
[INFO] [stderr]    Compiling levenberg-marquardt v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking arrsac v0.6.1
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking simba v0.4.0
[INFO] [stderr]     Checking pcg_rand v0.13.0
[INFO] [stderr]     Checking nalgebra v0.25.3
[INFO] [stdout] warning: unused variable: `problem`
[INFO] [stdout]    --> src/lm/test_examples_gen.rs:744:14
[INFO] [stdout]     |
[INFO] [stdout] 744 |         let (problem, report) = LevenbergMarquardt::new()
[INFO] [stdout]     |              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_problem`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.78s
[INFO] running `Command { std: "docker" "inspect" "44e12bf3ddf6e0b98abae052a24bda3b7522da954a09f36e03ec279ba06205b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44e12bf3ddf6e0b98abae052a24bda3b7522da954a09f36e03ec279ba06205b7", kill_on_drop: false }`
[INFO] [stdout] 44e12bf3ddf6e0b98abae052a24bda3b7522da954a09f36e03ec279ba06205b7