[INFO] cloning repository https://github.com/Shivansh-Potdar/gameoflife
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shivansh-Potdar/gameoflife" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShivansh-Potdar%2Fgameoflife", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShivansh-Potdar%2Fgameoflife'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d3ca27bba667679902264e5796a09ad7f5e07e1
[INFO] checking Shivansh-Potdar/gameoflife against try#0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef for pr-147859
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShivansh-Potdar%2Fgameoflife" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Shivansh-Potdar/gameoflife
[INFO] finished tweaking git repo https://github.com/Shivansh-Potdar/gameoflife
[INFO] tweaked toml for git repo https://github.com/Shivansh-Potdar/gameoflife written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Shivansh-Potdar/gameoflife on toolchain 0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Shivansh-Potdar/gameoflife 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" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "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 Shivansh-Potdar/gameoflife against try#0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef for pr-147859
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShivansh-Potdar%2Fgameoflife" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Shivansh-Potdar/gameoflife
[INFO] finished tweaking git repo https://github.com/Shivansh-Potdar/gameoflife
[INFO] tweaked toml for git repo https://github.com/Shivansh-Potdar/gameoflife written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Shivansh-Potdar/gameoflife on toolchain 0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Shivansh-Potdar/gameoflife 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" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "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 das-grid v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e32a369d5e3d69e46b1ada67e0c669453e84145e1998bc43c9d4e93797b3506f
[INFO] running `Command { std: "docker" "start" "-a" "e32a369d5e3d69e46b1ada67e0c669453e84145e1998bc43c9d4e93797b3506f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e32a369d5e3d69e46b1ada67e0c669453e84145e1998bc43c9d4e93797b3506f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e32a369d5e3d69e46b1ada67e0c669453e84145e1998bc43c9d4e93797b3506f", kill_on_drop: false }`
[INFO] [stdout] e32a369d5e3d69e46b1ada67e0c669453e84145e1998bc43c9d4e93797b3506f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fad91cfe9c2c6fa8c96ac3ae789efb3177144f0d680e845bc064f3d1dcbe587a
[INFO] running `Command { std: "docker" "start" "-a" "fad91cfe9c2c6fa8c96ac3ae789efb3177144f0d680e845bc064f3d1dcbe587a", kill_on_drop: false }`
[INFO] [stderr]     Checking das-grid v0.1.5
[INFO] [stderr]     Checking conways_gol v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `empty_cell` is assigned to, but never used
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut empty_cell = 0;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_empty_cell` instead
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:60:27
[INFO] [stdout]    |
[INFO] [stdout] 60 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:66:27
[INFO] [stdout]    |
[INFO] [stdout] 66 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:36:27
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:42:27
[INFO] [stdout]    |
[INFO] [stdout] 42 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `liv_n` is never read
[INFO] [stdout]  --> src/main.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut liv_n = 0;
[INFO] [stdout]   |                     ^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `empty_cell` is assigned to, but never used
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut empty_cell = 0;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_empty_cell` instead
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:60:27
[INFO] [stdout]    |
[INFO] [stdout] 60 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:66:27
[INFO] [stdout]    |
[INFO] [stdout] 66 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:36:27
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:42:27
[INFO] [stdout]    |
[INFO] [stdout] 42 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `empty_cell` is never read
[INFO] [stdout]   --> src/main.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |                     _=> { empty_cell+=1; print!("");}
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `liv_n` is never read
[INFO] [stdout]  --> src/main.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut liv_n = 0;
[INFO] [stdout]   |                     ^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "fad91cfe9c2c6fa8c96ac3ae789efb3177144f0d680e845bc064f3d1dcbe587a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fad91cfe9c2c6fa8c96ac3ae789efb3177144f0d680e845bc064f3d1dcbe587a", kill_on_drop: false }`
[INFO] [stdout] fad91cfe9c2c6fa8c96ac3ae789efb3177144f0d680e845bc064f3d1dcbe587a