[INFO] fetching crate levenberg-marquardt 0.8.0...
[INFO] checking levenberg-marquardt-0.8.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate levenberg-marquardt 0.8.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate levenberg-marquardt 0.8.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pcg_rand v0.13.0
[INFO] [stderr]   Downloaded sample-consensus v1.0.1
[INFO] [stderr]   Downloaded arrsac v0.6.1
[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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b34003521bd753bae22b655e5c644039655ec06a3b2383ef6c943ca11e7881b0
[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" "b34003521bd753bae22b655e5c644039655ec06a3b2383ef6c943ca11e7881b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b34003521bd753bae22b655e5c644039655ec06a3b2383ef6c943ca11e7881b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b34003521bd753bae22b655e5c644039655ec06a3b2383ef6c943ca11e7881b0", kill_on_drop: false }`
[INFO] [stdout] b34003521bd753bae22b655e5c644039655ec06a3b2383ef6c943ca11e7881b0
[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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 59963bc019de2c674a7dde698dd7ead4987a8049f1bb010f253fbbeb2474eda9
[INFO] running `Command { std: "docker" "start" "-a" "59963bc019de2c674a7dde698dd7ead4987a8049f1bb010f253fbbeb2474eda9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking sample-consensus v1.0.1
[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 matrixmultiply v0.3.1
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling levenberg-marquardt v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking arrsac v0.6.1
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking pcg_rand v0.13.0
[INFO] [stderr]     Checking simba v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking nalgebra v0.25.4
[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 54.73s
[INFO] running `Command { std: "docker" "inspect" "59963bc019de2c674a7dde698dd7ead4987a8049f1bb010f253fbbeb2474eda9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59963bc019de2c674a7dde698dd7ead4987a8049f1bb010f253fbbeb2474eda9", kill_on_drop: false }`
[INFO] [stdout] 59963bc019de2c674a7dde698dd7ead4987a8049f1bb010f253fbbeb2474eda9