[INFO] cloning repository https://github.com/gahooa/sud999
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gahooa/sud999" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgahooa%2Fsud999", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgahooa%2Fsud999'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e2c5634ad84350b265e41e1b6edd3c27d9d0bfa
[INFO] checking gahooa/sud999 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgahooa%2Fsud999" "/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/gahooa/sud999 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gahooa/sud999
[INFO] finished tweaking git repo https://github.com/gahooa/sud999
[INFO] tweaked toml for git repo https://github.com/gahooa/sud999 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gahooa/sud999 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mlua v0.6.6
[INFO] [stderr]   Downloaded lua-src v543.1.0
[INFO] [stderr]   Downloaded luajit-src v210.3.1+restycd2285f
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a3d3c8f1e18cf818d923cd257377016369f913f58a6464bb689474cecae7d97
[INFO] running `Command { std: "docker" "start" "-a" "5a3d3c8f1e18cf818d923cd257377016369f913f58a6464bb689474cecae7d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a3d3c8f1e18cf818d923cd257377016369f913f58a6464bb689474cecae7d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a3d3c8f1e18cf818d923cd257377016369f913f58a6464bb689474cecae7d97", kill_on_drop: false }`
[INFO] [stdout] 5a3d3c8f1e18cf818d923cd257377016369f913f58a6464bb689474cecae7d97
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bfbea294a2685ba2630c3f417bdb853177a3e1acc3c799b7466875f8f10ea67e
[INFO] running `Command { std: "docker" "start" "-a" "bfbea294a2685ba2630c3f417bdb853177a3e1acc3c799b7466875f8f10ea67e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling luajit-src v210.3.1+restycd2285f
[INFO] [stderr]    Compiling lua-src v543.1.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling mlua v0.6.6
[INFO] [stderr]     Checking rust5 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `depth` is never read
[INFO] [stdout]   --> src/suduko/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Board{
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     depth: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Board` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `verbose` is never read
[INFO] [stdout]    --> src/suduko/mod.rs:241:5
[INFO] [stdout]     |
[INFO] [stdout] 238 | struct Game {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 241 |     verbose: bool,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `depth` is never read
[INFO] [stdout]   --> src/suduko/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Board{
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     depth: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Board` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `verbose` is never read
[INFO] [stdout]    --> src/suduko/mod.rs:241:5
[INFO] [stdout]     |
[INFO] [stdout] 238 | struct Game {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 241 |     verbose: bool,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.20s
[INFO] running `Command { std: "docker" "inspect" "bfbea294a2685ba2630c3f417bdb853177a3e1acc3c799b7466875f8f10ea67e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfbea294a2685ba2630c3f417bdb853177a3e1acc3c799b7466875f8f10ea67e", kill_on_drop: false }`
[INFO] [stdout] bfbea294a2685ba2630c3f417bdb853177a3e1acc3c799b7466875f8f10ea67e