[INFO] cloning repository https://github.com/dclamage/SudokuClassicMinLex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dclamage/SudokuClassicMinLex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdclamage%2FSudokuClassicMinLex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdclamage%2FSudokuClassicMinLex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd7d38d8050870ce506a9a0ece9dd2f1a418abcd
[INFO] checking dclamage/SudokuClassicMinLex against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdclamage%2FSudokuClassicMinLex" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/dclamage/SudokuClassicMinLex
[INFO] finished tweaking git repo https://github.com/dclamage/SudokuClassicMinLex
[INFO] tweaked toml for git repo https://github.com/dclamage/SudokuClassicMinLex written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dclamage/SudokuClassicMinLex on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dclamage/SudokuClassicMinLex 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d19df65ca2ca9223af00db5ba91b20e6c0495bb2c6a22089dbeb1a4dc038a144
[INFO] running `Command { std: "docker" "start" "-a" "d19df65ca2ca9223af00db5ba91b20e6c0495bb2c6a22089dbeb1a4dc038a144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d19df65ca2ca9223af00db5ba91b20e6c0495bb2c6a22089dbeb1a4dc038a144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d19df65ca2ca9223af00db5ba91b20e6c0495bb2c6a22089dbeb1a4dc038a144", kill_on_drop: false }`
[INFO] [stdout] d19df65ca2ca9223af00db5ba91b20e6c0495bb2c6a22089dbeb1a4dc038a144
[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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e51a3bb35537b5b2b80c1ea1005e9b35942232b117fcaadd2558dbf76ef99a77
[INFO] running `Command { std: "docker" "start" "-a" "e51a3bb35537b5b2b80c1ea1005e9b35942232b117fcaadd2558dbf76ef99a77", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling pyo3-build-config v0.24.2
[INFO] [stderr]     Checking getrandom v0.3.2
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling pyo3-macros-backend v0.24.2
[INFO] [stderr]    Compiling pyo3-ffi v0.24.2
[INFO] [stderr]    Compiling pyo3 v0.24.2
[INFO] [stderr]    Compiling pyo3-macros v0.24.2
[INFO] [stderr]     Checking sudoku-classic-minlex v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/lib.rs:204:60
[INFO] [stdout]     |
[INFO] [stdout] 204 | fn solution_count(sudoku_str: &str, max_solutions: u64) -> u64 {
[INFO] [stdout]     |                                                            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sudoku-classic-minlex` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/lib.rs:214:39
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn singles_depth(sudoku_str: &str) -> i64 {
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/lib.rs:235:45
[INFO] [stdout]     |
[INFO] [stdout] 235 | fn solve(sudoku_str: &str, random: bool) -> String {
[INFO] [stdout]     |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/lib.rs:256:33
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn singles(sudoku_str: &str) -> String {
[INFO] [stdout]     |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/lib.rs:204:60
[INFO] [stdout]     |
[INFO] [stdout] 204 | fn solution_count(sudoku_str: &str, max_solutions: u64) -> u64 {
[INFO] [stdout]     |                                                            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/lib.rs:214:39
[INFO] [stdout]     |
[INFO] [stdout] 214 | fn singles_depth(sudoku_str: &str) -> i64 {
[INFO] [stdout]     |                                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/lib.rs:235:45
[INFO] [stdout]     |
[INFO] [stdout] 235 | fn solve(sudoku_str: &str, random: bool) -> String {
[INFO] [stdout]     |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/lib.rs:256:33
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn singles(sudoku_str: &str) -> String {
[INFO] [stdout]     |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sudoku-classic-minlex` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "e51a3bb35537b5b2b80c1ea1005e9b35942232b117fcaadd2558dbf76ef99a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e51a3bb35537b5b2b80c1ea1005e9b35942232b117fcaadd2558dbf76ef99a77", kill_on_drop: false }`
[INFO] [stdout] e51a3bb35537b5b2b80c1ea1005e9b35942232b117fcaadd2558dbf76ef99a77
