[INFO] cloning repository https://github.com/ArchUsr64/sudoku_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArchUsr64/sudoku_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArchUsr64%2Fsudoku_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArchUsr64%2Fsudoku_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fc54123185e82da8834292565d5d3efc6e486dd
[INFO] checking ArchUsr64/sudoku_solver against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArchUsr64%2Fsudoku_solver" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ArchUsr64/sudoku_solver on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ArchUsr64/sudoku_solver
[INFO] finished tweaking git repo https://github.com/ArchUsr64/sudoku_solver
[INFO] tweaked toml for git repo https://github.com/ArchUsr64/sudoku_solver written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ArchUsr64/sudoku_solver 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 275902114a232daac81f113eb061d0005681bbc9c09e0f3ec08bdf2685fc2155
[INFO] running `Command { std: "docker" "start" "-a" "275902114a232daac81f113eb061d0005681bbc9c09e0f3ec08bdf2685fc2155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "275902114a232daac81f113eb061d0005681bbc9c09e0f3ec08bdf2685fc2155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "275902114a232daac81f113eb061d0005681bbc9c09e0f3ec08bdf2685fc2155", kill_on_drop: false }`
[INFO] [stdout] 275902114a232daac81f113eb061d0005681bbc9c09e0f3ec08bdf2685fc2155
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2636e2f624d8b348633ec771e9be1cc51617f2bce7a27fbfdadb412cc52d8950
[INFO] running `Command { std: "docker" "start" "-a" "2636e2f624d8b348633ec771e9be1cc51617f2bce7a27fbfdadb412cc52d8950", kill_on_drop: false }`
[INFO] [stderr]     Checking sudoku_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "2636e2f624d8b348633ec771e9be1cc51617f2bce7a27fbfdadb412cc52d8950", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2636e2f624d8b348633ec771e9be1cc51617f2bce7a27fbfdadb412cc52d8950", kill_on_drop: false }`
[INFO] [stdout] 2636e2f624d8b348633ec771e9be1cc51617f2bce7a27fbfdadb412cc52d8950
[INFO] checking ArchUsr64/sudoku_solver against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArchUsr64%2Fsudoku_solver" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ArchUsr64/sudoku_solver on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ArchUsr64/sudoku_solver
[INFO] finished tweaking git repo https://github.com/ArchUsr64/sudoku_solver
[INFO] tweaked toml for git repo https://github.com/ArchUsr64/sudoku_solver written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ArchUsr64/sudoku_solver 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15b2246ab8fc4bcdd649c9e81dab144ad2f98333d8f1b8b714522c4b01dfb732
[INFO] running `Command { std: "docker" "start" "-a" "15b2246ab8fc4bcdd649c9e81dab144ad2f98333d8f1b8b714522c4b01dfb732", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15b2246ab8fc4bcdd649c9e81dab144ad2f98333d8f1b8b714522c4b01dfb732", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15b2246ab8fc4bcdd649c9e81dab144ad2f98333d8f1b8b714522c4b01dfb732", kill_on_drop: false }`
[INFO] [stdout] 15b2246ab8fc4bcdd649c9e81dab144ad2f98333d8f1b8b714522c4b01dfb732
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0eeee39ce7064981df0f77a3077e43b1776a08eb93b366b041d3e696a265fb74
[INFO] running `Command { std: "docker" "start" "-a" "0eeee39ce7064981df0f77a3077e43b1776a08eb93b366b041d3e696a265fb74", kill_on_drop: false }`
[INFO] [stderr]     Checking termion v2.0.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/termion-2.0.1/src/input.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 | /             match self.iter.next() {
[INFO] [stdout] 20 | |                 Some(Ok(Event::Key(k))) => return Some(Ok(k)),
[INFO] [stdout] 21 | |                 Some(Ok(_)) => continue,
[INFO] [stdout] 22 | |                 Some(Err(e)) => return Some(Err(e)),
[INFO] [stdout] 23 | |                 None => return None,
[INFO] [stdout] 24 | |             };
[INFO] [stdout]    | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `termion` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "0eeee39ce7064981df0f77a3077e43b1776a08eb93b366b041d3e696a265fb74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eeee39ce7064981df0f77a3077e43b1776a08eb93b366b041d3e696a265fb74", kill_on_drop: false }`
[INFO] [stdout] 0eeee39ce7064981df0f77a3077e43b1776a08eb93b366b041d3e696a265fb74