[INFO] cloning repository https://github.com/mod-42/math-vis-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mod-42/math-vis-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmod-42%2Fmath-vis-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmod-42%2Fmath-vis-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 628a14354d826c573f816e4430d8932f9e561036
[INFO] testing mod-42/math-vis-rust against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmod-42%2Fmath-vis-rust" "/workspace/builds/worker-90/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-90/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mod-42/math-vis-rust on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mod-42/math-vis-rust
[INFO] finished tweaking git repo https://github.com/mod-42/math-vis-rust
[INFO] tweaked toml for git repo https://github.com/mod-42/math-vis-rust written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] crate git repo https://github.com/mod-42/math-vis-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c844208c82c331f41cbcdf55d68ead67d70a7dcd055044527f40a8f05900942f
[INFO] running `Command { std: "docker" "start" "-a" "c844208c82c331f41cbcdf55d68ead67d70a7dcd055044527f40a8f05900942f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c844208c82c331f41cbcdf55d68ead67d70a7dcd055044527f40a8f05900942f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c844208c82c331f41cbcdf55d68ead67d70a7dcd055044527f40a8f05900942f", kill_on_drop: false }`
[INFO] [stdout] c844208c82c331f41cbcdf55d68ead67d70a7dcd055044527f40a8f05900942f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 226953f0bb36e340f5772799394f8dfeb543c661e683b0281d1bc92dfd3d872b
[INFO] running `Command { std: "docker" "start" "-a" "226953f0bb36e340f5772799394f8dfeb543c661e683b0281d1bc92dfd3d872b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mathe-project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 |     for i in 0..6 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/main.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut c = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `e` is never read
[INFO] [stdout]   --> src/main.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let mut e = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/main.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 |         for j in 0..6 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "226953f0bb36e340f5772799394f8dfeb543c661e683b0281d1bc92dfd3d872b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "226953f0bb36e340f5772799394f8dfeb543c661e683b0281d1bc92dfd3d872b", kill_on_drop: false }`
[INFO] [stdout] 226953f0bb36e340f5772799394f8dfeb543c661e683b0281d1bc92dfd3d872b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72cc160f7d0d73b58446270907b07a2deb39c9aed4a52fe1e244b80f0f7d7069
[INFO] running `Command { std: "docker" "start" "-a" "72cc160f7d0d73b58446270907b07a2deb39c9aed4a52fe1e244b80f0f7d7069", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mathe-project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 |     for i in 0..6 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/main.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut c = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `e` is never read
[INFO] [stdout]   --> src/main.rs:22:11
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let mut e = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/main.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 |         for j in 0..6 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3m 23s
[INFO] running `Command { std: "docker" "inspect" "72cc160f7d0d73b58446270907b07a2deb39c9aed4a52fe1e244b80f0f7d7069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72cc160f7d0d73b58446270907b07a2deb39c9aed4a52fe1e244b80f0f7d7069", kill_on_drop: false }`
[INFO] [stdout] 72cc160f7d0d73b58446270907b07a2deb39c9aed4a52fe1e244b80f0f7d7069
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6800d9214b96161a3f2174af1cfcd5b68af467a433f6d23f060317818cf83716
[INFO] running `Command { std: "docker" "start" "-a" "6800d9214b96161a3f2174af1cfcd5b68af467a433f6d23f060317818cf83716", 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] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:18:6
[INFO] [stderr]    |
[INFO] [stderr] 18 |     for i in 0..6 {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]   --> src/main.rs:20:11
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let mut c = 0;
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `e` is never read
[INFO] [stderr]   --> src/main.rs:22:11
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let mut e = 0;
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]   --> src/main.rs:25:7
[INFO] [stderr]    |
[INFO] [stderr] 25 |         for j in 0..6 {
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stderr] 
[INFO] [stderr] warning: `mathe-project` (bin "mathe-project" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.61s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mathe_project-4052d4625af18ac4)
[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" "6800d9214b96161a3f2174af1cfcd5b68af467a433f6d23f060317818cf83716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6800d9214b96161a3f2174af1cfcd5b68af467a433f6d23f060317818cf83716", kill_on_drop: false }`
[INFO] [stdout] 6800d9214b96161a3f2174af1cfcd5b68af467a433f6d23f060317818cf83716