[INFO] cloning repository https://github.com/gabivlj/tetris-terminal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gabivlj/tetris-terminal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgabivlj%2Ftetris-terminal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgabivlj%2Ftetris-terminal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2730da18fa58daf525d373603cb5d45b0081a511
[INFO] testing gabivlj/tetris-terminal against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgabivlj%2Ftetris-terminal" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gabivlj/tetris-terminal on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gabivlj/tetris-terminal
[INFO] finished tweaking git repo https://github.com/gabivlj/tetris-terminal
[INFO] tweaked toml for git repo https://github.com/gabivlj/tetris-terminal written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate git repo https://github.com/gabivlj/tetris-terminal already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc59de0d24da32cafaf41c2303e5c8162e7d8eae79eaaa36dd58cf8a9a8d53f8
[INFO] running `Command { std: "docker" "start" "-a" "dc59de0d24da32cafaf41c2303e5c8162e7d8eae79eaaa36dd58cf8a9a8d53f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc59de0d24da32cafaf41c2303e5c8162e7d8eae79eaaa36dd58cf8a9a8d53f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc59de0d24da32cafaf41c2303e5c8162e7d8eae79eaaa36dd58cf8a9a8d53f8", kill_on_drop: false }`
[INFO] [stdout] dc59de0d24da32cafaf41c2303e5c8162e7d8eae79eaaa36dd58cf8a9a8d53f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4303e9d66669777707f2226e547135c445185cc468afe4d5ae912cc74e9f23d
[INFO] running `Command { std: "docker" "start" "-a" "e4303e9d66669777707f2226e547135c445185cc468afe4d5ae912cc74e9f23d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling termion v1.5.5
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tetris v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Read`, `self`
[INFO] [stdout]  --> src/tetris.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use std::io::{self, Read};
[INFO] [stdout]   |                   ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/tetris.rs:6:34
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use std::io::{stdin, stdout, Stdin, Stdout, Write};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `color`, `style`
[INFO] [stdout]   --> src/tetris.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use termion::{color, style};
[INFO] [stdout]    |                   ^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/tetris.rs:199:39
[INFO] [stdout]     |
[INFO] [stdout] 199 |                         self.score += (how_many_rows * how_many_rows);
[INFO] [stdout]     |                                       ^                             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 199 -                         self.score += (how_many_rows * how_many_rows);
[INFO] [stdout] 199 +                         self.score += how_many_rows * how_many_rows;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut tetris = Tetris::new();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             write!(self.stdout, "{}", termion::clear::All);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |                 write!(self.stdout, "{}", termion::cursor::Goto(1, r as u16 + 1),);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:165:21
[INFO] [stdout]     |
[INFO] [stdout] 165 |                     write!(self.stdout, "{}", character);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:168:13
[INFO] [stdout]     |
[INFO] [stdout] 168 |             write!(self.stdout, "\nScore: {}", self.score);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 | /             write!(
[INFO] [stdout] 226 | |                 self.stdout,
[INFO] [stdout] 227 | |                 "{}{}",
[INFO] [stdout] 228 | |                 termion::cursor::Goto(1, 1),
[INFO] [stdout] 229 | |                 termion::clear::CurrentLine
[INFO] [stdout] 230 | |             );
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.77s
[INFO] running `Command { std: "docker" "inspect" "e4303e9d66669777707f2226e547135c445185cc468afe4d5ae912cc74e9f23d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4303e9d66669777707f2226e547135c445185cc468afe4d5ae912cc74e9f23d", kill_on_drop: false }`
[INFO] [stdout] e4303e9d66669777707f2226e547135c445185cc468afe4d5ae912cc74e9f23d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e20b46661ee6b6f1db08f1b7981f68302315ce5ece833aef79c3b0bdc6019f49
[INFO] running `Command { std: "docker" "start" "-a" "e20b46661ee6b6f1db08f1b7981f68302315ce5ece833aef79c3b0bdc6019f49", kill_on_drop: false }`
[INFO] [stderr]    Compiling tetris v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Read`, `self`
[INFO] [stdout]  --> src/tetris.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use std::io::{self, Read};
[INFO] [stdout]   |                   ^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdin`
[INFO] [stdout]  --> src/tetris.rs:6:34
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use std::io::{stdin, stdout, Stdin, Stdout, Write};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `color`, `style`
[INFO] [stdout]   --> src/tetris.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use termion::{color, style};
[INFO] [stdout]    |                   ^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/tetris.rs:199:39
[INFO] [stdout]     |
[INFO] [stdout] 199 |                         self.score += (how_many_rows * how_many_rows);
[INFO] [stdout]     |                                       ^                             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 199 -                         self.score += (how_many_rows * how_many_rows);
[INFO] [stdout] 199 +                         self.score += how_many_rows * how_many_rows;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut tetris = Tetris::new();
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             write!(self.stdout, "{}", termion::clear::All);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |                 write!(self.stdout, "{}", termion::cursor::Goto(1, r as u16 + 1),);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:165:21
[INFO] [stdout]     |
[INFO] [stdout] 165 |                     write!(self.stdout, "{}", character);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:168:13
[INFO] [stdout]     |
[INFO] [stdout] 168 |             write!(self.stdout, "\nScore: {}", self.score);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/tetris.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 | /             write!(
[INFO] [stdout] 226 | |                 self.stdout,
[INFO] [stdout] 227 | |                 "{}{}",
[INFO] [stdout] 228 | |                 termion::cursor::Goto(1, 1),
[INFO] [stdout] 229 | |                 termion::clear::CurrentLine
[INFO] [stdout] 230 | |             );
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "e20b46661ee6b6f1db08f1b7981f68302315ce5ece833aef79c3b0bdc6019f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e20b46661ee6b6f1db08f1b7981f68302315ce5ece833aef79c3b0bdc6019f49", kill_on_drop: false }`
[INFO] [stdout] e20b46661ee6b6f1db08f1b7981f68302315ce5ece833aef79c3b0bdc6019f49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 38785fd7499b89682fcc1b8cc7f68429026290823ed4e0b47ad45c8f92a15316
[INFO] running `Command { std: "docker" "start" "-a" "38785fd7499b89682fcc1b8cc7f68429026290823ed4e0b47ad45c8f92a15316", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Read`, `self`
[INFO] [stderr]  --> src/tetris.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 |     use std::io::{self, Read};
[INFO] [stderr]   |                   ^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdin`
[INFO] [stderr]  --> src/tetris.rs:6:34
[INFO] [stderr]   |
[INFO] [stderr] 6 |     use std::io::{stdin, stdout, Stdin, Stdout, Write};
[INFO] [stderr]   |                                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `color`, `style`
[INFO] [stderr]   --> src/tetris.rs:11:19
[INFO] [stderr]    |
[INFO] [stderr] 11 |     use termion::{color, style};
[INFO] [stderr]    |                   ^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/tetris.rs:199:39
[INFO] [stderr]     |
[INFO] [stderr] 199 |                         self.score += (how_many_rows * how_many_rows);
[INFO] [stderr]     |                                       ^                             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 199 -                         self.score += (how_many_rows * how_many_rows);
[INFO] [stderr] 199 +                         self.score += how_many_rows * how_many_rows;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut tetris = Tetris::new();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tetris.rs:160:13
[INFO] [stderr]     |
[INFO] [stderr] 160 |             write!(self.stdout, "{}", termion::clear::All);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tetris.rs:162:17
[INFO] [stderr]     |
[INFO] [stderr] 162 |                 write!(self.stdout, "{}", termion::cursor::Goto(1, r as u16 + 1),);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tetris.rs:165:21
[INFO] [stderr]     |
[INFO] [stderr] 165 |                     write!(self.stdout, "{}", character);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tetris.rs:168:13
[INFO] [stderr]     |
[INFO] [stderr] 168 |             write!(self.stdout, "\nScore: {}", self.score);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/tetris.rs:225:13
[INFO] [stderr]     |
[INFO] [stderr] 225 | /             write!(
[INFO] [stderr] 226 | |                 self.stdout,
[INFO] [stderr] 227 | |                 "{}{}",
[INFO] [stderr] 228 | |                 termion::cursor::Goto(1, 1),
[INFO] [stderr] 229 | |                 termion::clear::CurrentLine
[INFO] [stderr] 230 | |             );
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `tetris` (bin "tetris" test) generated 10 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tetris-56410f9a45d72331)
[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" "38785fd7499b89682fcc1b8cc7f68429026290823ed4e0b47ad45c8f92a15316", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38785fd7499b89682fcc1b8cc7f68429026290823ed4e0b47ad45c8f92a15316", kill_on_drop: false }`
[INFO] [stdout] 38785fd7499b89682fcc1b8cc7f68429026290823ed4e0b47ad45c8f92a15316