[INFO] cloning repository https://github.com/peterzaccha/rust-wordle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peterzaccha/rust-wordle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterzaccha%2Frust-wordle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterzaccha%2Frust-wordle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c6f3b09f933cb0330d3c6975b7e58fd9648dd09
[INFO] building peterzaccha/rust-wordle against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterzaccha%2Frust-wordle" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peterzaccha/rust-wordle on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/peterzaccha/rust-wordle
[INFO] finished tweaking git repo https://github.com/peterzaccha/rust-wordle
[INFO] tweaked toml for git repo https://github.com/peterzaccha/rust-wordle written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/peterzaccha/rust-wordle 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 909f2512d9859ba74121e1e834127589cf5ec68cd639e9526dd3551aefcff4db
[INFO] running `Command { std: "docker" "start" "-a" "909f2512d9859ba74121e1e834127589cf5ec68cd639e9526dd3551aefcff4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "909f2512d9859ba74121e1e834127589cf5ec68cd639e9526dd3551aefcff4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "909f2512d9859ba74121e1e834127589cf5ec68cd639e9526dd3551aefcff4db", kill_on_drop: false }`
[INFO] [stdout] 909f2512d9859ba74121e1e834127589cf5ec68cd639e9526dd3551aefcff4db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d01239596fa833a1ea8b261ae89f958f5ce71512bc5bf4bba654a633769e6a8
[INFO] running `Command { std: "docker" "start" "-a" "6d01239596fa833a1ea8b261ae89f958f5ce71512bc5bf4bba654a633769e6a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling wordl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `filtered`
[INFO] [stdout]   --> src/solver.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |             let filtered: Vec<&str> = vec![];
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filtered`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `guess_char`
[INFO] [stdout]   --> src/solver.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |             for guess_char in guess_result.word {}
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_guess_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/solver.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |             for i in &self.valid_words {}
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WordleSolver` is never constructed
[INFO] [stdout]  --> src/solver.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct WordleSolver<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `generate_guess`, and `solve` are never used
[INFO] [stdout]   --> src/solver.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<'a> WordleSolver<'a> {
[INFO] [stdout]    | ------------------------- associated items in this implementation
[INFO] [stdout] 10 |     pub fn new(game: &'a mut WordleGame) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn generate_guess(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn solve(&mut self) -> Result<String, ()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.40s
[INFO] running `Command { std: "docker" "inspect" "6d01239596fa833a1ea8b261ae89f958f5ce71512bc5bf4bba654a633769e6a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d01239596fa833a1ea8b261ae89f958f5ce71512bc5bf4bba654a633769e6a8", kill_on_drop: false }`
[INFO] [stdout] 6d01239596fa833a1ea8b261ae89f958f5ce71512bc5bf4bba654a633769e6a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79dd95347fd3004ff6a13975d3020763d329a76aa943b512c5db22a5ae9f4436
[INFO] running `Command { std: "docker" "start" "-a" "79dd95347fd3004ff6a13975d3020763d329a76aa943b512c5db22a5ae9f4436", kill_on_drop: false }`
[INFO] [stderr]    Compiling wordl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `filtered`
[INFO] [stdout]   --> src/solver.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |             let filtered: Vec<&str> = vec![];
[INFO] [stdout]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_filtered`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `guess_char`
[INFO] [stdout]   --> src/solver.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |             for guess_char in guess_result.word {}
[INFO] [stdout]    |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_guess_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/solver.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 |             for i in &self.valid_words {}
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WordleSolver` is never constructed
[INFO] [stdout]  --> src/solver.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct WordleSolver<'a> {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `generate_guess`, and `solve` are never used
[INFO] [stdout]   --> src/solver.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl<'a> WordleSolver<'a> {
[INFO] [stdout]    | ------------------------- associated items in this implementation
[INFO] [stdout] 10 |     pub fn new(game: &'a mut WordleGame) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn generate_guess(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn solve(&mut self) -> Result<String, ()> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "79dd95347fd3004ff6a13975d3020763d329a76aa943b512c5db22a5ae9f4436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79dd95347fd3004ff6a13975d3020763d329a76aa943b512c5db22a5ae9f4436", kill_on_drop: false }`
[INFO] [stdout] 79dd95347fd3004ff6a13975d3020763d329a76aa943b512c5db22a5ae9f4436