[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] 5c281e286b8c0195e577196d2db33bf14cc4c016
[INFO] building nbardiuk/mix-rs against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnbardiuk%2Fmix-rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nbardiuk/mix-rs on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nbardiuk/mix-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d8f0c0413dcb1c678ae803a2a1b6f3b2a6af4f2174dd13c2ba2bad5889a351e
[INFO] running `Command { std: "docker" "start" "-a" "6d8f0c0413dcb1c678ae803a2a1b6f3b2a6af4f2174dd13c2ba2bad5889a351e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d8f0c0413dcb1c678ae803a2a1b6f3b2a6af4f2174dd13c2ba2bad5889a351e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d8f0c0413dcb1c678ae803a2a1b6f3b2a6af4f2174dd13c2ba2bad5889a351e", kill_on_drop: false }`
[INFO] [stdout] 6d8f0c0413dcb1c678ae803a2a1b6f3b2a6af4f2174dd13c2ba2bad5889a351e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca7381f133d20156af26379e8f1a4d3753958851aec20faf79f8d012884fd1a5
[INFO] running `Command { std: "docker" "start" "-a" "ca7381f133d20156af26379e8f1a4d3753958851aec20faf79f8d012884fd1a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling mix-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `BYTE` is never used
[INFO] [stdout]  --> src/main.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | const BYTE: u8 = 64;
[INFO] [stdout]   |       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `WORD_BYTES` is never used
[INFO] [stdout]  --> src/main.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const WORD_BYTES: u8 = 5;
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Byte` is never constructed
[INFO] [stdout]  --> src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Byte(pub u8);
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Byte {
[INFO] [stdout]   | --------- associated function in this implementation
[INFO] [stdout] 7 |     fn new(b: u8) -> Byte {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Sign` is never used
[INFO] [stdout]   --> src/main.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Sign {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `opposite` is never used
[INFO] [stdout]   --> src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Sign {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 24 |     fn opposite(&self) -> Self {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Word` is never constructed
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Word {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `slice`, `merge`, `overflowing_add`, and `overflowing_mul` are never used
[INFO] [stdout]    --> src/main.rs:39:8
[INFO] [stdout]     |
[INFO] [stdout]  38 | impl Word {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  39 |     fn new(sign: Sign, b0: u8, b1: u8, b2: u8, b3: u8, b4: u8) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  52 |     fn slice(self, m: Modification) -> Self {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  71 |     fn merge(self, word: Word, m: Modification) -> Self {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  93 |     fn overflowing_add(self, other: Self) -> (Self, bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     fn overflowing_mul(self, other: Self) -> (Self, Self, bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Index` is never constructed
[INFO] [stdout]    --> src/main.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | struct Index {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 188 | impl Index {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] 189 |     fn new(sign: Sign, b0: u8, b1: u8) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Jump` is never constructed
[INFO] [stdout]    --> src/main.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 220 | struct Jump {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:224:8
[INFO] [stdout]     |
[INFO] [stdout] 223 | impl Jump {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 224 |     fn new(b0: u8, b1: u8) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Toggle` is never used
[INFO] [stdout]    --> src/main.rs:253:6
[INFO] [stdout]     |
[INFO] [stdout] 253 | enum Toggle {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Comparison` is never used
[INFO] [stdout]    --> src/main.rs:271:6
[INFO] [stdout]     |
[INFO] [stdout] 271 | enum Comparison {
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mix` is never constructed
[INFO] [stdout]    --> src/main.rs:282:8
[INFO] [stdout]     |
[INFO] [stdout] 282 | struct Mix {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Modification` is never used
[INFO] [stdout]    --> src/main.rs:317:6
[INFO] [stdout]     |
[INFO] [stdout] 317 | enum Modification {
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `field` is never used
[INFO] [stdout]    --> src/main.rs:335:8
[INFO] [stdout]     |
[INFO] [stdout] 334 | impl Modification {
[INFO] [stdout]     | ----------------- associated function in this implementation
[INFO] [stdout] 335 |     fn field(l: u8, r: u8) -> Self {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IndexNumber` is never used
[INFO] [stdout]    --> src/main.rs:340:6
[INFO] [stdout]     |
[INFO] [stdout] 340 | enum IndexNumber {
[INFO] [stdout]     |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Address` is never constructed
[INFO] [stdout]    --> src/main.rs:348:8
[INFO] [stdout]     |
[INFO] [stdout] 348 | struct Address {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `memory_index` are never used
[INFO] [stdout]    --> src/main.rs:353:8
[INFO] [stdout]     |
[INFO] [stdout] 352 | impl Address {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 353 |     fn new(address: i16) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 367 |     fn memory_index(&self) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Operation` is never used
[INFO] [stdout]    --> src/main.rs:371:6
[INFO] [stdout]     |
[INFO] [stdout] 371 | enum Operation {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `default_modification` is never used
[INFO] [stdout]    --> src/main.rs:403:8
[INFO] [stdout]     |
[INFO] [stdout] 402 | impl Operation {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 403 |     fn default_modification(self) -> Modification {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Instruction` is never constructed
[INFO] [stdout]    --> src/main.rs:410:8
[INFO] [stdout]     |
[INFO] [stdout] 410 | struct Instruction {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:417:8
[INFO] [stdout]     |
[INFO] [stdout] 416 | impl Instruction {
[INFO] [stdout]     | ---------------- associated function in this implementation
[INFO] [stdout] 417 |     fn new(
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `contents`, `save_contents`, `load`, `store`, and `exec` are never used
[INFO] [stdout]    --> src/main.rs:433:8
[INFO] [stdout]     |
[INFO] [stdout] 432 | impl Mix {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout] 433 |     fn contents(&self, address: &Address) -> Word {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 437 |     fn save_contents(&mut self, address: &Address, word: Word) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 441 |     fn load(&self, instruction: Instruction) -> Word {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 449 |     fn store(&mut self, word: Word, instruction: Instruction) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 458 |     fn exec(mut self, instruction: Instruction) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "ca7381f133d20156af26379e8f1a4d3753958851aec20faf79f8d012884fd1a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca7381f133d20156af26379e8f1a4d3753958851aec20faf79f8d012884fd1a5", kill_on_drop: false }`
[INFO] [stdout] ca7381f133d20156af26379e8f1a4d3753958851aec20faf79f8d012884fd1a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 824d417823fc3532102072c079d0f6b5c783bed3b624881915a67d74888e1efc
[INFO] running `Command { std: "docker" "start" "-a" "824d417823fc3532102072c079d0f6b5c783bed3b624881915a67d74888e1efc", kill_on_drop: false }`
[INFO] [stderr]    Compiling mix-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variants `Less` and `Greater` are never constructed
[INFO] [stdout]    --> src/main.rs:272:5
[INFO] [stdout]     |
[INFO] [stdout] 271 | enum Comparison {
[INFO] [stdout]     |      ---------- variants in this enum
[INFO] [stdout] 272 |     Less,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 273 |     Equal,
[INFO] [stdout] 274 |     Greater,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `comparison_indicator` is never read
[INFO] [stdout]    --> src/main.rs:293:5
[INFO] [stdout]     |
[INFO] [stdout] 282 | struct Mix {
[INFO] [stdout]     |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 293 |     comparison_indicator: Comparison,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `I1`, `I2`, `I3`, `I4`, `I5`, and `I6` are never constructed
[INFO] [stdout]    --> src/main.rs:341:5
[INFO] [stdout]     |
[INFO] [stdout] 340 | enum IndexNumber {
[INFO] [stdout]     |      ----------- variants in this enum
[INFO] [stdout] 341 |     I1,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 342 |     I2,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 343 |     I3,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 344 |     I4,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 345 |     I5,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 346 |     I6,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sign` is never read
[INFO] [stdout]    --> src/main.rs:349:5
[INFO] [stdout]     |
[INFO] [stdout] 348 | struct Address {
[INFO] [stdout]     |        ------- field in this struct
[INFO] [stdout] 349 |     sign: Sign,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `index` is never read
[INFO] [stdout]    --> src/main.rs:413:5
[INFO] [stdout]     |
[INFO] [stdout] 410 | struct Instruction {
[INFO] [stdout]     |        ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 413 |     index: Option<IndexNumber>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "824d417823fc3532102072c079d0f6b5c783bed3b624881915a67d74888e1efc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "824d417823fc3532102072c079d0f6b5c783bed3b624881915a67d74888e1efc", kill_on_drop: false }`
[INFO] [stdout] 824d417823fc3532102072c079d0f6b5c783bed3b624881915a67d74888e1efc