[INFO] cloning repository https://github.com/mikhail-ram/rux
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikhail-ram/rux" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikhail-ram%2Frux", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikhail-ram%2Frux'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10fda86935281e0b12c57a8938d6a96cb6f7a5a8
[INFO] checking mikhail-ram/rux against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikhail-ram%2Frux" "/workspace/builds/worker-32/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mikhail-ram/rux on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mikhail-ram/rux
[INFO] finished tweaking git repo https://github.com/mikhail-ram/rux
[INFO] tweaked toml for git repo https://github.com/mikhail-ram/rux written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] crate git repo https://github.com/mikhail-ram/rux already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f414e448c13a61fd710c42af4868672126615726c054b8862494f0495f828fd
[INFO] running `Command { std: "docker" "start" "-a" "6f414e448c13a61fd710c42af4868672126615726c054b8862494f0495f828fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f414e448c13a61fd710c42af4868672126615726c054b8862494f0495f828fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f414e448c13a61fd710c42af4868672126615726c054b8862494f0495f828fd", kill_on_drop: false }`
[INFO] [stdout] 6f414e448c13a61fd710c42af4868672126615726c054b8862494f0495f828fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f16a645b9398021fdd74fe5d4b0d1993f0bb20a4afdca22217538cf7574bdb0
[INFO] running `Command { std: "docker" "start" "-a" "9f16a645b9398021fdd74fe5d4b0d1993f0bb20a4afdca22217538cf7574bdb0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking rux v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x_test`
[INFO] [stdout]   --> src/bin.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let x_test = Matrix::new(vec![vec![3, 4, 5]]);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_test`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_test`
[INFO] [stdout]   --> src/bin.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let y_test = Matrix::new(vec![vec![7, 8, 9]]);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_test`
[INFO] [stdout]   --> src/bin.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let x_test = Matrix::new(vec![vec![3, 4, 5]]);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_test`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_test`
[INFO] [stdout]   --> src/bin.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let y_test = Matrix::new(vec![vec![7, 8, 9]]);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.53s
[INFO] running `Command { std: "docker" "inspect" "9f16a645b9398021fdd74fe5d4b0d1993f0bb20a4afdca22217538cf7574bdb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f16a645b9398021fdd74fe5d4b0d1993f0bb20a4afdca22217538cf7574bdb0", kill_on_drop: false }`
[INFO] [stdout] 9f16a645b9398021fdd74fe5d4b0d1993f0bb20a4afdca22217538cf7574bdb0