[INFO] cloning repository https://github.com/Troppydash/FoCdle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Troppydash/FoCdle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTroppydash%2FFoCdle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTroppydash%2FFoCdle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 32029a59f5dd81cd1f6f9dde3ad2779e763c39a2
[INFO] checking Troppydash/FoCdle against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTroppydash%2FFoCdle" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Troppydash/FoCdle
[INFO] finished tweaking git repo https://github.com/Troppydash/FoCdle
[INFO] tweaked toml for git repo https://github.com/Troppydash/FoCdle written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Troppydash/FoCdle on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Troppydash/FoCdle 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad20a519bbca111e958d91ea6a2b3f4e473898c1e38a3bb83a3083cf2ee4ad4b
[INFO] running `Command { std: "docker" "start" "-a" "ad20a519bbca111e958d91ea6a2b3f4e473898c1e38a3bb83a3083cf2ee4ad4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad20a519bbca111e958d91ea6a2b3f4e473898c1e38a3bb83a3083cf2ee4ad4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad20a519bbca111e958d91ea6a2b3f4e473898c1e38a3bb83a3083cf2ee4ad4b", kill_on_drop: false }`
[INFO] [stdout] ad20a519bbca111e958d91ea6a2b3f4e473898c1e38a3bb83a3083cf2ee4ad4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75f60d51561df8b5b8b6e2c908f426c5863545b28c4d6479cf5ad792bdedfc4c
[INFO] running `Command { std: "docker" "start" "-a" "75f60d51561df8b5b8b6e2c908f426c5863545b28c4d6479cf5ad792bdedfc4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking focdle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/guesser.rs:484:9
[INFO] [stdout]     |
[INFO] [stdout] 371 | /         loop {
[INFO] [stdout] 372 | |             // state variable: current guess ops left
[INFO] [stdout] 373 | |             let mut ops_left: i32 = 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 482 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 483 |
[INFO] [stdout] 484 |           panic!("failed to find a fail solution");
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/guesser.rs:680:9
[INFO] [stdout]     |
[INFO] [stdout] 677 |         panic!("failed to find a solution");
[INFO] [stdout]     |         ----------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 680 |         "0".repeat(self.difficulty)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/guesser.rs:484:9
[INFO] [stdout]     |
[INFO] [stdout] 371 | /         loop {
[INFO] [stdout] 372 | |             // state variable: current guess ops left
[INFO] [stdout] 373 | |             let mut ops_left: i32 = 2;
[INFO] [stdout] ...   |
[INFO] [stdout] 482 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 483 |
[INFO] [stdout] 484 |           panic!("failed to find a fail solution");
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/guesser.rs:680:9
[INFO] [stdout]     |
[INFO] [stdout] 677 |         panic!("failed to find a solution");
[INFO] [stdout]     |         ----------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 680 |         "0".repeat(self.difficulty)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expression_length`
[INFO] [stdout]    --> src/guesser.rs:354:9
[INFO] [stdout]     |
[INFO] [stdout] 354 |         expression_length: usize,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expression_length`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result_length`
[INFO] [stdout]    --> src/guesser.rs:355:9
[INFO] [stdout]     |
[INFO] [stdout] 355 |         result_length: usize,
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expression_length`
[INFO] [stdout]    --> src/guesser.rs:354:9
[INFO] [stdout]     |
[INFO] [stdout] 354 |         expression_length: usize,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expression_length`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result_length`
[INFO] [stdout]    --> src/guesser.rs:355:9
[INFO] [stdout]     |
[INFO] [stdout] 355 |         result_length: usize,
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_result_length`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `total_max` is assigned to, but never used
[INFO] [stdout]    --> src/game.rs:319:13
[INFO] [stdout]     |
[INFO] [stdout] 319 |         let mut total_max = 0;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_total_max` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total_max` is never read
[INFO] [stdout]    --> src/game.rs:323:17
[INFO] [stdout]     |
[INFO] [stdout] 323 |                 total_max += lu.max;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `total_max` is assigned to, but never used
[INFO] [stdout]    --> src/game.rs:319:13
[INFO] [stdout]     |
[INFO] [stdout] 319 |         let mut total_max = 0;
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_total_max` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total_max` is never read
[INFO] [stdout]    --> src/game.rs:323:17
[INFO] [stdout]     |
[INFO] [stdout] 323 |                 total_max += lu.max;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `benchmark` is never used
[INFO] [stdout]   --> src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn benchmark() {
[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 `searches` is never read
[INFO] [stdout]   --> src/guesser.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Guesser {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 36 |     searches: i32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/game.rs:180:12
[INFO] [stdout]     |
[INFO] [stdout] 179 | impl InfoIndex {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 180 |     pub fn new() -> InfoIndex {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_expression` is never used
[INFO] [stdout]    --> src/game.rs:465:4
[INFO] [stdout]     |
[INFO] [stdout] 465 | fn random_expression() -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_secret` is never used
[INFO] [stdout]    --> src/game.rs:482:8
[INFO] [stdout]     |
[INFO] [stdout] 482 | pub fn create_secret(difficulty: usize) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/test.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn test(
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `benchmark` is never used
[INFO] [stdout]   --> src/main.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn benchmark() {
[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 `searches` is never read
[INFO] [stdout]   --> src/guesser.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Guesser {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 36 |     searches: i32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/game.rs:180:12
[INFO] [stdout]     |
[INFO] [stdout] 179 | impl InfoIndex {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 180 |     pub fn new() -> InfoIndex {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_expression` is never used
[INFO] [stdout]    --> src/game.rs:465:4
[INFO] [stdout]     |
[INFO] [stdout] 465 | fn random_expression() -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.98s
[INFO] [stdout] warning: function `create_secret` is never used
[INFO] [stdout]    --> src/game.rs:482:8
[INFO] [stdout]     |
[INFO] [stdout] 482 | pub fn create_secret(difficulty: usize) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/test.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn test(
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "75f60d51561df8b5b8b6e2c908f426c5863545b28c4d6479cf5ad792bdedfc4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75f60d51561df8b5b8b6e2c908f426c5863545b28c4d6479cf5ad792bdedfc4c", kill_on_drop: false }`
[INFO] [stdout] 75f60d51561df8b5b8b6e2c908f426c5863545b28c4d6479cf5ad792bdedfc4c