[INFO] cloning repository https://github.com/randomaccessvemuri/Gaussian-Elimination
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/randomaccessvemuri/Gaussian-Elimination" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frandomaccessvemuri%2FGaussian-Elimination", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frandomaccessvemuri%2FGaussian-Elimination'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a080608d488e31dc662c63306254bebc9608013
[INFO] checking randomaccessvemuri/Gaussian-Elimination against try#b98202ad067d72e45cec8be3d5c15d86ef0fd086 for pr-155193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frandomaccessvemuri%2FGaussian-Elimination" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/randomaccessvemuri/Gaussian-Elimination
[INFO] finished tweaking git repo https://github.com/randomaccessvemuri/Gaussian-Elimination
[INFO] tweaked toml for git repo https://github.com/randomaccessvemuri/Gaussian-Elimination written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/randomaccessvemuri/Gaussian-Elimination on toolchain b98202ad067d72e45cec8be3d5c15d86ef0fd086
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/randomaccessvemuri/Gaussian-Elimination already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking randomaccessvemuri/Gaussian-Elimination against try#b98202ad067d72e45cec8be3d5c15d86ef0fd086 for pr-155193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frandomaccessvemuri%2FGaussian-Elimination" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/randomaccessvemuri/Gaussian-Elimination
[INFO] finished tweaking git repo https://github.com/randomaccessvemuri/Gaussian-Elimination
[INFO] tweaked toml for git repo https://github.com/randomaccessvemuri/Gaussian-Elimination written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/randomaccessvemuri/Gaussian-Elimination on toolchain b98202ad067d72e45cec8be3d5c15d86ef0fd086
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/randomaccessvemuri/Gaussian-Elimination already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "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 ansi_term v0.11.0
[INFO] [stderr]   Downloaded string_morph v0.1.0
[INFO] [stderr]   Downloaded unicode-width v0.1.13
[INFO] [stderr]   Downloaded unicode_types v0.2.0
[INFO] [stderr]   Downloaded matrix_display v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fecd3fa9a53ad7c726c4bf6eaedad9ed8447054e8a0c181483e9a8173d883b98
[INFO] running `Command { std: "docker" "start" "-a" "fecd3fa9a53ad7c726c4bf6eaedad9ed8447054e8a0c181483e9a8173d883b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fecd3fa9a53ad7c726c4bf6eaedad9ed8447054e8a0c181483e9a8173d883b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fecd3fa9a53ad7c726c4bf6eaedad9ed8447054e8a0c181483e9a8173d883b98", kill_on_drop: false }`
[INFO] [stdout] fecd3fa9a53ad7c726c4bf6eaedad9ed8447054e8a0c181483e9a8173d883b98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b98202ad067d72e45cec8be3d5c15d86ef0fd086" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e8e59fb864e4cbd32008c267d5d82725c3cee28cdfa6fb818c244bde8232101
[INFO] running `Command { std: "docker" "start" "-a" "2e8e59fb864e4cbd32008c267d5d82725c3cee28cdfa6fb818c244bde8232101", kill_on_drop: false }`
[INFO] [stderr]     Checking string_morph v0.1.0
[INFO] [stderr]     Checking unicode-width v0.1.13
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking unicode_types v0.2.0
[INFO] [stderr]     Checking matrix_display v1.0.0
[INFO] [stderr]     Checking gaussian_elimination v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         .map(|(i, &val)| cell::Cell::new(val, 7, 240))
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         .map(|(i, &val)| cell::Cell::new(val, 7, 240))
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.02s
[INFO] running `Command { std: "docker" "inspect" "2e8e59fb864e4cbd32008c267d5d82725c3cee28cdfa6fb818c244bde8232101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e8e59fb864e4cbd32008c267d5d82725c3cee28cdfa6fb818c244bde8232101", kill_on_drop: false }`
[INFO] [stdout] 2e8e59fb864e4cbd32008c267d5d82725c3cee28cdfa6fb818c244bde8232101
