[INFO] crate utile_cli 0.3.2 is already in cache
[INFO] testing utile_cli-0.3.2 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate utile_cli 0.3.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate utile_cli 0.3.2 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate utile_cli 0.3.2
[INFO] finished tweaking crates.io crate utile_cli 0.3.2
[INFO] tweaked toml for crates.io crate utile_cli 0.3.2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3e0cf3dbb8eba0c24c8b2c97b9b996a5ec7743ae6c2594607ea6fc5f967b3fc2
[INFO] running `Command { std: "docker" "start" "-a" "3e0cf3dbb8eba0c24c8b2c97b9b996a5ec7743ae6c2594607ea6fc5f967b3fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e0cf3dbb8eba0c24c8b2c97b9b996a5ec7743ae6c2594607ea6fc5f967b3fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e0cf3dbb8eba0c24c8b2c97b9b996a5ec7743ae6c2594607ea6fc5f967b3fc2", kill_on_drop: false }`
[INFO] [stdout] 3e0cf3dbb8eba0c24c8b2c97b9b996a5ec7743ae6c2594607ea6fc5f967b3fc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3d08fee9b41cdc73d487799f5ff0ac1e46228c38f16068cafff38ae1a19221c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b3d08fee9b41cdc73d487799f5ff0ac1e46228c38f16068cafff38ae1a19221c", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling pancurses v0.16.1
[INFO] [stderr]    Compiling utile_cli v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/cli.rs:639:14
[INFO] [stdout]     |
[INFO] [stdout] 639 |           if (y < layers.len() - 1) {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/cli.rs:644:14
[INFO] [stdout]     |
[INFO] [stdout] 644 |           if (y > 0) {
[INFO] [stdout]     |              ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/cli.rs:494:11
[INFO] [stdout]     |
[INFO] [stdout] 494 |       _ | None => ()
[INFO] [stdout]     |           ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/cli.rs:493:23
[INFO] [stdout]     |
[INFO] [stdout] 493 |       Some(Key::Alpha(c)) => { self.raw_delete_prev(); },
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cli.rs:513:23
[INFO] [stdout]     |
[INFO] [stdout] 513 |           if let Some(i) = r.get_content().pop() {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cli.rs:544:23
[INFO] [stdout]     |
[INFO] [stdout] 544 |           if let Some(i) = r.get_content().pop() {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]    --> src/cli.rs:201:6
[INFO] [stdout]     |
[INFO] [stdout] 201 |   fn pop(&mut self) -> Option<Layer2D> {
[INFO] [stdout]     |      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "b3d08fee9b41cdc73d487799f5ff0ac1e46228c38f16068cafff38ae1a19221c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3d08fee9b41cdc73d487799f5ff0ac1e46228c38f16068cafff38ae1a19221c", kill_on_drop: false }`
[INFO] [stdout] b3d08fee9b41cdc73d487799f5ff0ac1e46228c38f16068cafff38ae1a19221c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5d536ab43be339342c80ac80bdb95eed23e558def9340362c0e54c35082d30fd
[INFO] running `Command { std: "docker" "start" "-a" "5d536ab43be339342c80ac80bdb95eed23e558def9340362c0e54c35082d30fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling utile_cli v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/cli.rs:639:14
[INFO] [stdout]     |
[INFO] [stdout] 639 |           if (y < layers.len() - 1) {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/cli.rs:644:14
[INFO] [stdout]     |
[INFO] [stdout] 644 |           if (y > 0) {
[INFO] [stdout]     |              ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/cli.rs:494:11
[INFO] [stdout]     |
[INFO] [stdout] 494 |       _ | None => ()
[INFO] [stdout]     |           ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/cli.rs:493:23
[INFO] [stdout]     |
[INFO] [stdout] 493 |       Some(Key::Alpha(c)) => { self.raw_delete_prev(); },
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cli.rs:513:23
[INFO] [stdout]     |
[INFO] [stdout] 513 |           if let Some(i) = r.get_content().pop() {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cli.rs:544:23
[INFO] [stdout]     |
[INFO] [stdout] 544 |           if let Some(i) = r.get_content().pop() {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]    --> src/cli.rs:201:6
[INFO] [stdout]     |
[INFO] [stdout] 201 |   fn pop(&mut self) -> Option<Layer2D> {
[INFO] [stdout]     |      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/cli.rs:639:14
[INFO] [stdout]     |
[INFO] [stdout] 639 |           if (y < layers.len() - 1) {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/cli.rs:644:14
[INFO] [stdout]     |
[INFO] [stdout] 644 |           if (y > 0) {
[INFO] [stdout]     |              ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/cli.rs:494:11
[INFO] [stdout]     |
[INFO] [stdout] 494 |       _ | None => ()
[INFO] [stdout]     |           ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/cli.rs:493:23
[INFO] [stdout]     |
[INFO] [stdout] 493 |       Some(Key::Alpha(c)) => { self.raw_delete_prev(); },
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cli.rs:513:23
[INFO] [stdout]     |
[INFO] [stdout] 513 |           if let Some(i) = r.get_content().pop() {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cli.rs:544:23
[INFO] [stdout]     |
[INFO] [stdout] 544 |           if let Some(i) = r.get_content().pop() {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l2d`
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let l2d = t.add_layer2d(l2d);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_l2d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut behindl2d = Layer2D::new(0, 0, 4, 4, behindl);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mut frontl2d = Layer2D::new(0, 0, 2, 2, frontl);
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]    --> src/cli.rs:201:6
[INFO] [stdout]     |
[INFO] [stdout] 201 |   fn pop(&mut self) -> Option<Layer2D> {
[INFO] [stdout]     |      ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "5d536ab43be339342c80ac80bdb95eed23e558def9340362c0e54c35082d30fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d536ab43be339342c80ac80bdb95eed23e558def9340362c0e54c35082d30fd", kill_on_drop: false }`
[INFO] [stdout] 5d536ab43be339342c80ac80bdb95eed23e558def9340362c0e54c35082d30fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d8dfbc59a62bc9d681829aa3c1ac85c7deaa58dddcca2683966ef15bc7b3e9b3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d8dfbc59a62bc9d681829aa3c1ac85c7deaa58dddcca2683966ef15bc7b3e9b3", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/cli.rs:639:14
[INFO] [stderr]     |
[INFO] [stderr] 639 |           if (y < layers.len() - 1) {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/cli.rs:644:14
[INFO] [stderr]     |
[INFO] [stderr] 644 |           if (y > 0) {
[INFO] [stderr]     |              ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/cli.rs:494:11
[INFO] [stderr]     |
[INFO] [stderr] 494 |       _ | None => ()
[INFO] [stderr]     |           ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/cli.rs:493:23
[INFO] [stderr]     |
[INFO] [stderr] 493 |       Some(Key::Alpha(c)) => { self.raw_delete_prev(); },
[INFO] [stderr]     |                       ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/cli.rs:513:23
[INFO] [stderr]     |
[INFO] [stderr] 513 |           if let Some(i) = r.get_content().pop() {
[INFO] [stderr]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/cli.rs:544:23
[INFO] [stderr]     |
[INFO] [stderr] 544 |           if let Some(i) = r.get_content().pop() {
[INFO] [stderr]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pop`
[INFO] [stderr]    --> src/cli.rs:201:6
[INFO] [stderr]     |
[INFO] [stderr] 201 |   fn pop(&mut self) -> Option<Layer2D> {
[INFO] [stderr]     |      ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/cli.rs:639:14
[INFO] [stderr]     |
[INFO] [stderr] 639 |           if (y < layers.len() - 1) {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/cli.rs:644:14
[INFO] [stderr]     |
[INFO] [stderr] 644 |           if (y > 0) {
[INFO] [stderr]     |              ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/cli.rs:494:11
[INFO] [stderr]     |
[INFO] [stderr] 494 |       _ | None => ()
[INFO] [stderr]     |           ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/cli.rs:493:23
[INFO] [stderr]     |
[INFO] [stderr] 493 |       Some(Key::Alpha(c)) => { self.raw_delete_prev(); },
[INFO] [stderr]     |                       ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/cli.rs:513:23
[INFO] [stderr]     |
[INFO] [stderr] 513 |           if let Some(i) = r.get_content().pop() {
[INFO] [stderr]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/cli.rs:544:23
[INFO] [stderr]     |
[INFO] [stderr] 544 |           if let Some(i) = r.get_content().pop() {
[INFO] [stderr]     |                       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l2d`
[INFO] [stderr]   --> src/lib.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |     let l2d = t.add_layer2d(l2d);
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_l2d`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let mut behindl2d = Layer2D::new(0, 0, 4, 4, behindl);
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |     let mut frontl2d = Layer2D::new(0, 0, 2, 2, frontl);
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pop`
[INFO] [stderr]    --> src/cli.rs:201:6
[INFO] [stderr]     |
[INFO] [stderr] 201 |   fn pop(&mut self) -> Option<Layer2D> {
[INFO] [stderr]     |      ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/utile_cli-40babd2a18b8544a
[INFO] [stdout] 
[INFO] [stderr] Error opening terminal: unknown.
[INFO] [stdout] running 10 tests
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] running `Command { std: "docker" "inspect" "d8dfbc59a62bc9d681829aa3c1ac85c7deaa58dddcca2683966ef15bc7b3e9b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8dfbc59a62bc9d681829aa3c1ac85c7deaa58dddcca2683966ef15bc7b3e9b3", kill_on_drop: false }`
[INFO] [stdout] d8dfbc59a62bc9d681829aa3c1ac85c7deaa58dddcca2683966ef15bc7b3e9b3