[INFO] cloning repository https://github.com/nbardiuk/mix-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nbardiuk/mix-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnbardiuk%2Fmix-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnbardiuk%2Fmix-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eeba740ecdf510533ab6bbe597052e2c1c740dcf
[INFO] checking nbardiuk/mix-rs against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnbardiuk%2Fmix-rs" "/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/nbardiuk/mix-rs on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nbardiuk/mix-rs
[INFO] finished tweaking git repo https://github.com/nbardiuk/mix-rs
[INFO] tweaked toml for git repo https://github.com/nbardiuk/mix-rs written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/nbardiuk/mix-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--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] 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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3aad69c93bb97fc9ba17c53af8bba27817de42d993375849316820b6382a0ef0
[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" "3aad69c93bb97fc9ba17c53af8bba27817de42d993375849316820b6382a0ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3aad69c93bb97fc9ba17c53af8bba27817de42d993375849316820b6382a0ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aad69c93bb97fc9ba17c53af8bba27817de42d993375849316820b6382a0ef0", kill_on_drop: false }`
[INFO] [stdout] 3aad69c93bb97fc9ba17c53af8bba27817de42d993375849316820b6382a0ef0
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bea5f03e9741dc5da1413da7071869d4236e74e9e08ace6413acb5bcf8c2c94
[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" "8bea5f03e9741dc5da1413da7071869d4236e74e9e08ace6413acb5bcf8c2c94", kill_on_drop: false }`
[INFO] [stderr]     Checking mix-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/main.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn new(sign: Sign, b0: u8, b1: u8, b2: u8, b3: u8, b4: u8) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `slice`
[INFO] [stdout]   --> src/main.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn slice(self, m: Modification) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `merge`
[INFO] [stdout]   --> src/main.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn merge(self, word: Word, m: Modification) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `overflowing_add`
[INFO] [stdout]   --> src/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn overflowing_add(self, other: Self) -> (Self, bool) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn new(sign: Sign, b0: u8, b1: u8) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn new(b0: u8, b1: u8) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Less`
[INFO] [stdout]    --> src/main.rs:222:5
[INFO] [stdout]     |
[INFO] [stdout] 222 |     Less,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Greater`
[INFO] [stdout]    --> src/main.rs:224:5
[INFO] [stdout]     |
[INFO] [stdout] 224 |     Greater,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]    --> src/main.rs:233:5
[INFO] [stdout]     |
[INFO] [stdout] 233 |     a: Word,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]    --> src/main.rs:234:5
[INFO] [stdout]     |
[INFO] [stdout] 234 |     x: Word,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i1`
[INFO] [stdout]    --> src/main.rs:235:5
[INFO] [stdout]     |
[INFO] [stdout] 235 |     i1: Index,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i2`
[INFO] [stdout]    --> src/main.rs:236:5
[INFO] [stdout]     |
[INFO] [stdout] 236 |     i2: Index,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i3`
[INFO] [stdout]    --> src/main.rs:237:5
[INFO] [stdout]     |
[INFO] [stdout] 237 |     i3: Index,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i4`
[INFO] [stdout]    --> src/main.rs:238:5
[INFO] [stdout]     |
[INFO] [stdout] 238 |     i4: Index,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i5`
[INFO] [stdout]    --> src/main.rs:239:5
[INFO] [stdout]     |
[INFO] [stdout] 239 |     i5: Index,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i6`
[INFO] [stdout]    --> src/main.rs:240:5
[INFO] [stdout]     |
[INFO] [stdout] 240 |     i6: Index,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `j`
[INFO] [stdout]    --> src/main.rs:241:5
[INFO] [stdout]     |
[INFO] [stdout] 241 |     j: Jump,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `overflow`
[INFO] [stdout]    --> src/main.rs:242:5
[INFO] [stdout]     |
[INFO] [stdout] 242 |     overflow: Toggle,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `comparison_indicator`
[INFO] [stdout]    --> src/main.rs:243:5
[INFO] [stdout]     |
[INFO] [stdout] 243 |     comparison_indicator: Comparison,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `memory`
[INFO] [stdout]    --> src/main.rs:244:5
[INFO] [stdout]     |
[INFO] [stdout] 244 |     memory: [Word; 4000],
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IndexNumber`
[INFO] [stdout]    --> src/main.rs:290:6
[INFO] [stdout]     |
[INFO] [stdout] 290 | enum IndexNumber {
[INFO] [stdout]     |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Address`
[INFO] [stdout]    --> src/main.rs:298:8
[INFO] [stdout]     |
[INFO] [stdout] 298 | struct Address {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:303:8
[INFO] [stdout]     |
[INFO] [stdout] 303 |     fn new(address: i16) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Operation`
[INFO] [stdout]    --> src/main.rs:317:6
[INFO] [stdout]     |
[INFO] [stdout] 317 | enum Operation {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `default_modification`
[INFO] [stdout]    --> src/main.rs:347:8
[INFO] [stdout]     |
[INFO] [stdout] 347 |     fn default_modification(self) -> Modification {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Instruction`
[INFO] [stdout]    --> src/main.rs:354:8
[INFO] [stdout]     |
[INFO] [stdout] 354 | struct Instruction {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/main.rs:361:8
[INFO] [stdout]     |
[INFO] [stdout] 361 |     fn new(
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `contents`
[INFO] [stdout]    --> src/main.rs:377:8
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn contents(&self, address: &Address) -> Word {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `save_contents`
[INFO] [stdout]    --> src/main.rs:382:8
[INFO] [stdout]     |
[INFO] [stdout] 382 |     fn save_contents(&mut self, address: &Address, word: Word) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]    --> src/main.rs:387:8
[INFO] [stdout]     |
[INFO] [stdout] 387 |     fn load(&self, instruction: Instruction) -> Word {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `store`
[INFO] [stdout]    --> src/main.rs:395:8
[INFO] [stdout]     |
[INFO] [stdout] 395 |     fn store(&mut self, word: Word, instruction: Instruction) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `exec`
[INFO] [stdout]    --> src/main.rs:404:8
[INFO] [stdout]     |
[INFO] [stdout] 404 |     fn exec(mut self, instruction: Instruction) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Less`
[INFO] [stdout]    --> src/main.rs:222:5
[INFO] [stdout]     |
[INFO] [stdout] 222 |     Less,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Greater`
[INFO] [stdout]    --> src/main.rs:224:5
[INFO] [stdout]     |
[INFO] [stdout] 224 |     Greater,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `comparison_indicator`
[INFO] [stdout]    --> src/main.rs:243:5
[INFO] [stdout]     |
[INFO] [stdout] 243 |     comparison_indicator: Comparison,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I1`
[INFO] [stdout]    --> src/main.rs:291:5
[INFO] [stdout]     |
[INFO] [stdout] 291 |     I1,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I2`
[INFO] [stdout]    --> src/main.rs:292:5
[INFO] [stdout]     |
[INFO] [stdout] 292 |     I2,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I3`
[INFO] [stdout]    --> src/main.rs:293:5
[INFO] [stdout]     |
[INFO] [stdout] 293 |     I3,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I4`
[INFO] [stdout]    --> src/main.rs:294:5
[INFO] [stdout]     |
[INFO] [stdout] 294 |     I4,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I5`
[INFO] [stdout]    --> src/main.rs:295:5
[INFO] [stdout]     |
[INFO] [stdout] 295 |     I5,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I6`
[INFO] [stdout]    --> src/main.rs:296:5
[INFO] [stdout]     |
[INFO] [stdout] 296 |     I6,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sign`
[INFO] [stdout]    --> src/main.rs:299:5
[INFO] [stdout]     |
[INFO] [stdout] 299 |     sign: Sign,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `index`
[INFO] [stdout]    --> src/main.rs:357:5
[INFO] [stdout]     |
[INFO] [stdout] 357 |     index: Option<IndexNumber>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "8bea5f03e9741dc5da1413da7071869d4236e74e9e08ace6413acb5bcf8c2c94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bea5f03e9741dc5da1413da7071869d4236e74e9e08ace6413acb5bcf8c2c94", kill_on_drop: false }`
[INFO] [stdout] 8bea5f03e9741dc5da1413da7071869d4236e74e9e08ace6413acb5bcf8c2c94