[INFO] updating cached repository theHooloovoo/Game_of_Life-Rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/theHooloovoo/Game_of_Life-Rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/theHooloovoo/Game_of_Life-Rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/theHooloovoo/Game_of_Life-Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/theHooloovoo/Game_of_Life-Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/theHooloovoo/Game_of_Life-Rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/theHooloovoo/Game_of_Life-Rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/theHooloovoo/Game_of_Life-Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 959f41d6a578a988c02609bc41a57a9eb598910c
[INFO] sha for GitHub repo theHooloovoo/Game_of_Life-Rust: 959f41d6a578a988c02609bc41a57a9eb598910c
[INFO] validating manifest of theHooloovoo/Game_of_Life-Rust on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of theHooloovoo/Game_of_Life-Rust on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing theHooloovoo/Game_of_Life-Rust
[INFO] finished frobbing theHooloovoo/Game_of_Life-Rust
[INFO] frobbed toml for theHooloovoo/Game_of_Life-Rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/theHooloovoo/Game_of_Life-Rust/Cargo.toml
[INFO] started frobbing theHooloovoo/Game_of_Life-Rust
[INFO] finished frobbing theHooloovoo/Game_of_Life-Rust
[INFO] frobbed toml for theHooloovoo/Game_of_Life-Rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/theHooloovoo/Game_of_Life-Rust/Cargo.toml
[INFO] crate theHooloovoo/Game_of_Life-Rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing theHooloovoo/Game_of_Life-Rust against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/theHooloovoo/Game_of_Life-Rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 39474c999ed7c0b4bf292076a7fe48f415e856575ecb2c2524cd7ad09fa85497
[INFO] running `"docker" "start" "-a" "39474c999ed7c0b4bf292076a7fe48f415e856575ecb2c2524cd7ad09fa85497"`
[INFO] [stderr]    Compiling getopts v0.2.14
[INFO] [stderr] warning[E0503]: cannot use `state` because it was mutably borrowed
[INFO] [stderr]     --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/getopts-0.2.14/src/lib.rs:1008:33
[INFO] [stderr]      |
[INFO] [stderr] 955  |     let mut machine = |cont: &mut bool, (i, c): (usize, char)| {
[INFO] [stderr]      |                       ---------------------------------------- borrow of `state` occurs here
[INFO] [stderr] ...
[INFO] [stderr] 959  |         state = match (state, whitespace, limit) {
[INFO] [stderr]      |                        ----- borrow occurs due to use of `state` in closure
[INFO] [stderr] ...
[INFO] [stderr] 1008 |     while cont && match state { B | C => true, A => false } {
[INFO] [stderr]      |                                 ^ use of borrowed `state`
[INFO] [stderr] 1009 |         machine(&mut cont, (fake_i, ' '));
[INFO] [stderr]      |         ------- borrow later used here
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]      = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]      = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling conway_rs v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/reader.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `arg_file_name` is never read
[INFO] [stderr]   --> src/main.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut arg_file_name = "".to_string();
[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 `main_grid` is never read
[INFO] [stderr]   --> src/main.rs:58:25
[INFO] [stderr]    |
[INFO] [stderr] 58 |             Ok(data) => main_grid = grid::Grid::load_from_file_data(data),
[INFO] [stderr]    |                         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `cell_count` is never read
[INFO] [stderr]    --> src/grid.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |         let mut cell_count = 0;
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused comparison that must be used
[INFO] [stderr]    --> src/grid.rs:150:33
[INFO] [stderr]     |
[INFO] [stderr] 150 |         if self.state == true { self.state == false; }
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused comparison that must be used
[INFO] [stderr]    --> src/grid.rs:151:33
[INFO] [stderr]     |
[INFO] [stderr] 151 |         else                  { self.state == true;  }
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `"docker" "inspect" "39474c999ed7c0b4bf292076a7fe48f415e856575ecb2c2524cd7ad09fa85497"`
[INFO] running `"docker" "rm" "-f" "39474c999ed7c0b4bf292076a7fe48f415e856575ecb2c2524cd7ad09fa85497"`
[INFO] [stdout] 39474c999ed7c0b4bf292076a7fe48f415e856575ecb2c2524cd7ad09fa85497
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/theHooloovoo/Game_of_Life-Rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 581aee6ba1e4ebf22059798858933ec9d1f84221f6fc0551355670f3908228d6
[INFO] running `"docker" "start" "-a" "581aee6ba1e4ebf22059798858933ec9d1f84221f6fc0551355670f3908228d6"`
[INFO] [stderr]    Compiling conway_rs v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/reader.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `arg_file_name` is never read
[INFO] [stderr]   --> src/main.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut arg_file_name = "".to_string();
[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 `main_grid` is never read
[INFO] [stderr]   --> src/main.rs:58:25
[INFO] [stderr]    |
[INFO] [stderr] 58 |             Ok(data) => main_grid = grid::Grid::load_from_file_data(data),
[INFO] [stderr]    |                         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `cell_count` is never read
[INFO] [stderr]    --> src/grid.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |         let mut cell_count = 0;
[INFO] [stderr]     |                 ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused comparison that must be used
[INFO] [stderr]    --> src/grid.rs:150:33
[INFO] [stderr]     |
[INFO] [stderr] 150 |         if self.state == true { self.state == false; }
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused comparison that must be used
[INFO] [stderr]    --> src/grid.rs:151:33
[INFO] [stderr]     |
[INFO] [stderr] 151 |         else                  { self.state == true;  }
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "581aee6ba1e4ebf22059798858933ec9d1f84221f6fc0551355670f3908228d6"`
[INFO] running `"docker" "rm" "-f" "581aee6ba1e4ebf22059798858933ec9d1f84221f6fc0551355670f3908228d6"`
[INFO] [stdout] 581aee6ba1e4ebf22059798858933ec9d1f84221f6fc0551355670f3908228d6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/theHooloovoo/Game_of_Life-Rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] a8c48622f445c23e6417aa443168aa8c3ee6097a7e75156b93b25b4a5dd34b28
[INFO] running `"docker" "start" "-a" "a8c48622f445c23e6417aa443168aa8c3ee6097a7e75156b93b25b4a5dd34b28"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/conway_rs-c9f6445e4c57492f
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a8c48622f445c23e6417aa443168aa8c3ee6097a7e75156b93b25b4a5dd34b28"`
[INFO] running `"docker" "rm" "-f" "a8c48622f445c23e6417aa443168aa8c3ee6097a7e75156b93b25b4a5dd34b28"`
[INFO] [stdout] a8c48622f445c23e6417aa443168aa8c3ee6097a7e75156b93b25b4a5dd34b28