[INFO] cloning repository https://github.com/ymgyt/mathground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ymgyt/mathground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmathground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmathground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d85cc5cf4b15a4b365b2d0a7e2bc51a5d1b3d8ad
[INFO] testing ymgyt/mathground against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmathground" "/workspace/builds/worker-119/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-119/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ymgyt/mathground on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ymgyt/mathground
[INFO] finished tweaking git repo https://github.com/ymgyt/mathground
[INFO] tweaked toml for git repo https://github.com/ymgyt/mathground written to /workspace/builds/worker-119/source/Cargo.toml
[INFO] crate git repo https://github.com/ymgyt/mathground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded plotlib v0.5.1
[INFO] [stderr]   Downloaded backtrace-sys v0.1.36
[INFO] [stderr]   Downloaded svg v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5123466c3a3f662ce397bb178c2394ebff47f82c33e4b12625882de6b987d0f
[INFO] running `Command { std: "docker" "start" "-a" "b5123466c3a3f662ce397bb178c2394ebff47f82c33e4b12625882de6b987d0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5123466c3a3f662ce397bb178c2394ebff47f82c33e4b12625882de6b987d0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5123466c3a3f662ce397bb178c2394ebff47f82c33e4b12625882de6b987d0f", kill_on_drop: false }`
[INFO] [stdout] b5123466c3a3f662ce397bb178c2394ebff47f82c33e4b12625882de6b987d0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f48fa46f11f7eefa1df1cda2aeff7085718332495638521d16baaeaa8e83f05
[INFO] running `Command { std: "docker" "start" "-a" "5f48fa46f11f7eefa1df1cda2aeff7085718332495638521d16baaeaa8e83f05", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling svg v0.7.2
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.36
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling backtrace v0.3.46
[INFO] [stderr]    Compiling statrs v0.12.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure v0.1.7
[INFO] [stderr]    Compiling plotlib v0.5.1
[INFO] [stderr]    Compiling mathground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.49s
[INFO] running `Command { std: "docker" "inspect" "5f48fa46f11f7eefa1df1cda2aeff7085718332495638521d16baaeaa8e83f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f48fa46f11f7eefa1df1cda2aeff7085718332495638521d16baaeaa8e83f05", kill_on_drop: false }`
[INFO] [stdout] 5f48fa46f11f7eefa1df1cda2aeff7085718332495638521d16baaeaa8e83f05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 937e7f945a504a07f3caf1e45faa936ecbd162d0993f47b40dd8d2ad727eff4a
[INFO] running `Command { std: "docker" "start" "-a" "937e7f945a504a07f3caf1e45faa936ecbd162d0993f47b40dd8d2ad727eff4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling mathground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `PointMarker`
[INFO] [stdout]  --> examples/sin.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use plotlib::style::{LineStyle, PointMarker};
[INFO] [stdout]   |                                 ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `PointMarker`
[INFO] [stdout]  --> examples/condensor.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use plotlib::style::{LineStyle, PointMarker};
[INFO] [stdout]   |                                 ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> examples/differential.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut v = plotlib::view::ContinuousView::new().add(f1).add(f2);
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.75s
[INFO] running `Command { std: "docker" "inspect" "937e7f945a504a07f3caf1e45faa936ecbd162d0993f47b40dd8d2ad727eff4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "937e7f945a504a07f3caf1e45faa936ecbd162d0993f47b40dd8d2ad727eff4a", kill_on_drop: false }`
[INFO] [stdout] 937e7f945a504a07f3caf1e45faa936ecbd162d0993f47b40dd8d2ad727eff4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 318726665ac1f9941dacfab9b2604f82add40eecb006fb2eda3dd53f394d21f4
[INFO] running `Command { std: "docker" "start" "-a" "318726665ac1f9941dacfab9b2604f82add40eecb006fb2eda3dd53f394d21f4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/differential.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut v = plotlib::view::ContinuousView::new().add(f1).add(f2);
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PointMarker`
[INFO] [stderr]  --> examples/sin.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | use plotlib::style::{LineStyle, PointMarker};
[INFO] [stderr]   |                                 ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `PointMarker`
[INFO] [stderr]  --> examples/condensor.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | use plotlib::style::{LineStyle, PointMarker};
[INFO] [stderr]   |                                 ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `mathground` (example "differential") generated 1 warning
[INFO] [stderr] warning: `mathground` (example "sin") generated 1 warning
[INFO] [stderr] warning: `mathground` (example "condensor") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.65s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mathground-4f68c731d14e0536)
[INFO] [stdout] running 6 tests
[INFO] [stderr]    Doc-tests mathground
[INFO] [stdout] test stats::core::tests::test_average ... ok
[INFO] [stdout] test stats::core::tests::test_standard_score ... ok
[INFO] [stdout] test stats::core::tests::test_variance ... ok
[INFO] [stdout] test stats::data_set::tests::correlation_coefficient ... ok
[INFO] [stdout] test stats::error::tests::impl_std_error ... ok
[INFO] [stdout] test combination::tests::binominal_coefficient_case_1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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" "318726665ac1f9941dacfab9b2604f82add40eecb006fb2eda3dd53f394d21f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "318726665ac1f9941dacfab9b2604f82add40eecb006fb2eda3dd53f394d21f4", kill_on_drop: false }`
[INFO] [stdout] 318726665ac1f9941dacfab9b2604f82add40eecb006fb2eda3dd53f394d21f4