[INFO] cloning repository https://github.com/Jatsekku/MonteCarlo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jatsekku/MonteCarlo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJatsekku%2FMonteCarlo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJatsekku%2FMonteCarlo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 555ada470bc7e1cbacfb4ac3adfaf347c4abbe25
[INFO] checking Jatsekku/MonteCarlo against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJatsekku%2FMonteCarlo" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jatsekku/MonteCarlo on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jatsekku/MonteCarlo
[INFO] finished tweaking git repo https://github.com/Jatsekku/MonteCarlo
[INFO] tweaked toml for git repo https://github.com/Jatsekku/MonteCarlo written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Jatsekku/MonteCarlo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c7a0213f0c6cb1b96a75e52904564c196ad459bb7012b854924a82a157cf35c
[INFO] running `Command { std: "docker" "start" "-a" "4c7a0213f0c6cb1b96a75e52904564c196ad459bb7012b854924a82a157cf35c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c7a0213f0c6cb1b96a75e52904564c196ad459bb7012b854924a82a157cf35c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c7a0213f0c6cb1b96a75e52904564c196ad459bb7012b854924a82a157cf35c", kill_on_drop: false }`
[INFO] [stdout] 4c7a0213f0c6cb1b96a75e52904564c196ad459bb7012b854924a82a157cf35c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0d7ac4b086d79371d786e83710dffc91b2b731e8d49038372e6df24e14931c7
[INFO] running `Command { std: "docker" "start" "-a" "d0d7ac4b086d79371d786e83710dffc91b2b731e8d49038372e6df24e14931c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.46
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking gnuplot v0.0.37
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking streaming-stats v0.1.29
[INFO] [stderr]    Compiling displaydoc v0.1.7
[INFO] [stderr]     Checking linreg v0.2.0
[INFO] [stderr]     Checking random_walk_1d v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Caption`
[INFO] [stdout]  --> src/main.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use gnuplot::{Figure, Caption, Color};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linear_regression_of`
[INFO] [stdout]  --> src/main.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linreg::{linear_regression, linear_regression_of};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Caption`
[INFO] [stdout]  --> src/main.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use gnuplot::{Figure, Caption, Color};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linear_regression_of`
[INFO] [stdout]  --> src/main.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use linreg::{linear_regression, linear_regression_of};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fg.show();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fg.show();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.92s
[INFO] running `Command { std: "docker" "inspect" "d0d7ac4b086d79371d786e83710dffc91b2b731e8d49038372e6df24e14931c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0d7ac4b086d79371d786e83710dffc91b2b731e8d49038372e6df24e14931c7", kill_on_drop: false }`
[INFO] [stdout] d0d7ac4b086d79371d786e83710dffc91b2b731e8d49038372e6df24e14931c7