[INFO] cloning repository https://github.com/flayner2/chessrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flayner2/chessrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflayner2%2Fchessrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflayner2%2Fchessrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 545e13dd9105f87a90f7fc9029e7d4e51a66f35f
[INFO] checking flayner2/chessrs against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflayner2%2Fchessrs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flayner2/chessrs 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/flayner2/chessrs
[INFO] finished tweaking git repo https://github.com/flayner2/chessrs
[INFO] tweaked toml for git repo https://github.com/flayner2/chessrs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/flayner2/chessrs 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded version-compare v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f83dd7a2339b93c6285c6ceb1c51223e07295f7d3b65908a01bc33436bffceb0
[INFO] running `Command { std: "docker" "start" "-a" "f83dd7a2339b93c6285c6ceb1c51223e07295f7d3b65908a01bc33436bffceb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f83dd7a2339b93c6285c6ceb1c51223e07295f7d3b65908a01bc33436bffceb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f83dd7a2339b93c6285c6ceb1c51223e07295f7d3b65908a01bc33436bffceb0", kill_on_drop: false }`
[INFO] [stdout] f83dd7a2339b93c6285c6ceb1c51223e07295f7d3b65908a01bc33436bffceb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f742d8cee66bc8ddca7cfea0e3a2323ec45708e6af5cc406f9542bfe6e40c792
[INFO] running `Command { std: "docker" "start" "-a" "f742d8cee66bc8ddca7cfea0e3a2323ec45708e6af5cc406f9542bfe6e40c792", kill_on_drop: false }`
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking chessrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `WindowContext`
[INFO] [stdout]  --> src/main.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 |     video::{Window, WindowContext},
[INFO] [stdout]   |                     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `WindowContext`
[INFO] [stdout]  --> src/main.rs:8:21
[INFO] [stdout]   |
[INFO] [stdout] 8 |     video::{Window, WindowContext},
[INFO] [stdout]   |                     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Knight`, `Bishop`, `Rook`, `Queen`, and `King` are never constructed
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum PieceType {
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 17 |     Pawn,
[INFO] [stdout] 18 |     Knight,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Bishop,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 20 |     Rook,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 21 |     Queen,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     King,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `square_index`, `piece_type`, and `color` are never read
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct Piece {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 26 |     square_index: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     piece_type: PieceType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     color: ChessColor,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Knight`, `Bishop`, `Rook`, `Queen`, and `King` are never constructed
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum PieceType {
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 17 |     Pawn,
[INFO] [stdout] 18 |     Knight,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 19 |     Bishop,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 20 |     Rook,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 21 |     Queen,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     King,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `square_index`, `piece_type`, and `color` are never read
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct Piece {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 26 |     square_index: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     piece_type: PieceType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     color: ChessColor,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.03s
[INFO] running `Command { std: "docker" "inspect" "f742d8cee66bc8ddca7cfea0e3a2323ec45708e6af5cc406f9542bfe6e40c792", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f742d8cee66bc8ddca7cfea0e3a2323ec45708e6af5cc406f9542bfe6e40c792", kill_on_drop: false }`
[INFO] [stdout] f742d8cee66bc8ddca7cfea0e3a2323ec45708e6af5cc406f9542bfe6e40c792
[INFO] checking flayner2/chessrs against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflayner2%2Fchessrs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flayner2/chessrs 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/flayner2/chessrs
[INFO] finished tweaking git repo https://github.com/flayner2/chessrs
[INFO] tweaked toml for git repo https://github.com/flayner2/chessrs written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/flayner2/chessrs 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] afaf93be761e6124326d76ece793724c4118e529cf9f3925ae03cf168e12909d
[INFO] running `Command { std: "docker" "start" "-a" "afaf93be761e6124326d76ece793724c4118e529cf9f3925ae03cf168e12909d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afaf93be761e6124326d76ece793724c4118e529cf9f3925ae03cf168e12909d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afaf93be761e6124326d76ece793724c4118e529cf9f3925ae03cf168e12909d", kill_on_drop: false }`
[INFO] [stdout] afaf93be761e6124326d76ece793724c4118e529cf9f3925ae03cf168e12909d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 28055b2fde9faa8e1a76fe16702d5119b2478df16796f3c0fbf461e7f9a3ac09
[INFO] running `Command { std: "docker" "start" "-a" "28055b2fde9faa8e1a76fe16702d5119b2478df16796f3c0fbf461e7f9a3ac09", kill_on_drop: false }`
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/sdl2-0.35.2/src/sdl2/render.rs:233:13
[INFO] [stdout]     |
[INFO] [stdout] 233 |             panic!();
[INFO] [stdout]     |             ^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 `sdl2` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "28055b2fde9faa8e1a76fe16702d5119b2478df16796f3c0fbf461e7f9a3ac09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28055b2fde9faa8e1a76fe16702d5119b2478df16796f3c0fbf461e7f9a3ac09", kill_on_drop: false }`
[INFO] [stdout] 28055b2fde9faa8e1a76fe16702d5119b2478df16796f3c0fbf461e7f9a3ac09