[INFO] cloning repository https://github.com/yu-hasebe/the_elements_of_computing_systems
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yu-hasebe/the_elements_of_computing_systems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyu-hasebe%2Fthe_elements_of_computing_systems", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyu-hasebe%2Fthe_elements_of_computing_systems'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e52d30f6f28c0edd95355678aacb021a4407350d
[INFO] checking yu-hasebe/the_elements_of_computing_systems against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyu-hasebe%2Fthe_elements_of_computing_systems" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yu-hasebe/the_elements_of_computing_systems on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yu-hasebe/the_elements_of_computing_systems
[INFO] finished tweaking git repo https://github.com/yu-hasebe/the_elements_of_computing_systems
[INFO] tweaked toml for git repo https://github.com/yu-hasebe/the_elements_of_computing_systems written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/yu-hasebe/the_elements_of_computing_systems already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b63c22dfb6edd05917448138bb01205c9f4c90201196a06045fe8f850b60891
[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" "6b63c22dfb6edd05917448138bb01205c9f4c90201196a06045fe8f850b60891", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b63c22dfb6edd05917448138bb01205c9f4c90201196a06045fe8f850b60891", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b63c22dfb6edd05917448138bb01205c9f4c90201196a06045fe8f850b60891", kill_on_drop: false }`
[INFO] [stdout] 6b63c22dfb6edd05917448138bb01205c9f4c90201196a06045fe8f850b60891
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 126a3f7e242d05f3e868e43f244308a7bbe62b0c52db8ba4db56c885fa89843d
[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" "126a3f7e242d05f3e868e43f244308a7bbe62b0c52db8ba4db56c885fa89843d", kill_on_drop: false }`
[INFO] [stderr]     Checking the_elements_of_computing_systems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `carry15`
[INFO] [stdout]   --> src/chapter02/boolean_arithmetric.rs:44:10
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let [carry15, sum15] = full_adder(carry14, a[15], b[15]);
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_carry15`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `nand`
[INFO] [stdout]  --> src/chapter01/boolean_logic.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn nand(a: bool, b: bool) -> bool {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `not`
[INFO] [stdout]  --> src/chapter01/boolean_logic.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn not(a: bool) -> bool {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `and`
[INFO] [stdout]  --> src/chapter01/boolean_logic.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn and(a: bool, b: bool) -> bool {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `or`
[INFO] [stdout]   --> src/chapter01/boolean_logic.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn or(a: bool, b: bool) -> bool {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `xor`
[INFO] [stdout]   --> src/chapter01/boolean_logic.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn xor(a: bool, b: bool) -> bool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mux`
[INFO] [stdout]   --> src/chapter01/boolean_logic.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn mux(a: bool, b: bool, sel: bool) -> bool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dmux`
[INFO] [stdout]   --> src/chapter01/boolean_logic.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn dmux(_in: bool, sel: bool) -> [bool; 2] {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `not16`
[INFO] [stdout]   --> src/chapter01/boolean_logic.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn not16(_in: [bool; 16]) -> [bool; 16] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `and16`
[INFO] [stdout]   --> src/chapter01/boolean_logic.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn and16(a: [bool; 16], b: [bool; 16]) -> [bool; 16] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `or16`
[INFO] [stdout]   --> src/chapter01/boolean_logic.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn or16(a: [bool; 16], b: [bool; 16]) -> [bool; 16] {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mux16`
[INFO] [stdout]   --> src/chapter01/boolean_logic.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn mux16(a: [bool; 16], b: [bool; 16], sel: bool) -> [bool; 16] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `or8way`
[INFO] [stdout]    --> src/chapter01/boolean_logic.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 | pub fn or8way(_in: [bool; 8]) -> bool {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mux4way16`
[INFO] [stdout]    --> src/chapter01/boolean_logic.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub fn mux4way16(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mux8way16`
[INFO] [stdout]    --> src/chapter01/boolean_logic.rs:138:8
[INFO] [stdout]     |
[INFO] [stdout] 138 | pub fn mux8way16(
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dmux4way`
[INFO] [stdout]    --> src/chapter01/boolean_logic.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 156 | pub fn dmux4way(_in: bool, sel: [bool; 2]) -> [bool; 4] {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dmux8way`
[INFO] [stdout]    --> src/chapter01/boolean_logic.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn dmux8way(_in: bool, sel: [bool; 3]) -> [bool; 8] {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ZERO`
[INFO] [stdout]  --> src/chapter02/boolean_arithmetric.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | / const ZERO: [bool; 16] = [
[INFO] [stdout] 4 | |     false, false, false, false, false, false, false, false, false, false, false, false, false,
[INFO] [stdout] 5 | |     false, false, false,
[INFO] [stdout] 6 | | ];
[INFO] [stdout]   | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ONE`
[INFO] [stdout]   --> src/chapter02/boolean_arithmetric.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / const ONE: [bool; 16] = [
[INFO] [stdout] 8  | |     true, false, false, false, false, false, false, false, false, false, false, false, false,
[INFO] [stdout] 9  | |     false, false, false,
[INFO] [stdout] 10 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MINUS_ONE`
[INFO] [stdout]   --> src/chapter02/boolean_arithmetric.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / const MINUS_ONE: [bool; 16] = [
[INFO] [stdout] 12 | |     true, true, true, true, true, true, true, true, true, true, true, true, true, true, true, true,
[INFO] [stdout] 13 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `half_adder`
[INFO] [stdout]   --> src/chapter02/boolean_arithmetric.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn half_adder(a: bool, b: bool) -> [bool; 2] {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `full_adder`
[INFO] [stdout]   --> src/chapter02/boolean_arithmetric.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn full_adder(a: bool, b: bool, c: bool) -> [bool; 2] {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add16`
[INFO] [stdout]   --> src/chapter02/boolean_arithmetric.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn add16(a: [bool; 16], b: [bool; 16]) -> [bool; 16] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `inc16`
[INFO] [stdout]   --> src/chapter02/boolean_arithmetric.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn inc16(_in: [bool; 16]) -> [bool; 16] {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `alu`
[INFO] [stdout]   --> src/chapter02/boolean_arithmetric.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn alu(
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ZERO`
[INFO] [stdout]  --> src/chapter03/sequential_logic.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / const ZERO: [bool; 16] = [
[INFO] [stdout] 5 | |     false, false, false, false, false, false, false, false, false, false, false, false, false,
[INFO] [stdout] 6 | |     false, false, false,
[INFO] [stdout] 7 | | ];
[INFO] [stdout]   | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Dff`
[INFO] [stdout]  --> src/chapter03/sequential_logic.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Dff {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(initial_state: bool) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dff`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn dff(&mut self, _in: bool) -> bool {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Bit`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Bit {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bit`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn bit(&mut self, _in: bool, load: bool) -> bool {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Register`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct Register {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn register(&mut self, _in: [bool; 16], load: bool) -> [bool; 16] {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Ram8`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub struct Ram8 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/chapter03/sequential_logic.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ram8`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn ram8(&mut self, _in: [bool; 16], address: [bool; 3], load: bool) -> [bool; 16] {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Ram64`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:130:12
[INFO] [stdout]     |
[INFO] [stdout] 130 | pub struct Ram64 {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ram64`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn ram64(&mut self, _in: [bool; 16], address: [bool; 6], load: bool) -> [bool; 16] {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Ram512`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:168:12
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct Ram512 {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:173:12
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ram512`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:188:12
[INFO] [stdout]     |
[INFO] [stdout] 188 |     pub fn ram512(&mut self, _in: [bool; 16], address: [bool; 9], load: bool) -> [bool; 16] {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Ram4k`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:208:12
[INFO] [stdout]     |
[INFO] [stdout] 208 | pub struct Ram4k {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:213:12
[INFO] [stdout]     |
[INFO] [stdout] 213 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ram4k`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:228:12
[INFO] [stdout]     |
[INFO] [stdout] 228 |     pub fn ram4k(&mut self, _in: [bool; 16], address: [bool; 12], load: bool) -> [bool; 16] {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Ram16k`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:256:12
[INFO] [stdout]     |
[INFO] [stdout] 256 | pub struct Ram16k {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:261:12
[INFO] [stdout]     |
[INFO] [stdout] 261 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ram16k`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:267:12
[INFO] [stdout]     |
[INFO] [stdout] 267 |     pub fn ram16k(&mut self, _in: [bool; 16], address: [bool; 14], load: bool) -> [bool; 16] {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `PC`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:294:12
[INFO] [stdout]     |
[INFO] [stdout] 294 | pub struct PC {
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:299:12
[INFO] [stdout]     |
[INFO] [stdout] 299 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pc`
[INFO] [stdout]    --> src/chapter03/sequential_logic.rs:305:12
[INFO] [stdout]     |
[INFO] [stdout] 305 |     pub fn pc(&mut self, _in: [bool; 16], inc: bool, load: bool, reset: bool) -> [bool; 16] {
[INFO] [stdout]     |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 53 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `carry15`
[INFO] [stdout]   --> src/chapter02/boolean_arithmetric.rs:44:10
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let [carry15, sum15] = full_adder(carry14, a[15], b[15]);
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_carry15`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "126a3f7e242d05f3e868e43f244308a7bbe62b0c52db8ba4db56c885fa89843d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "126a3f7e242d05f3e868e43f244308a7bbe62b0c52db8ba4db56c885fa89843d", kill_on_drop: false }`
[INFO] [stdout] 126a3f7e242d05f3e868e43f244308a7bbe62b0c52db8ba4db56c885fa89843d