[INFO] fetching crate dots-and-boxes 0.1.0...
[INFO] checking dots-and-boxes-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate dots-and-boxes 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate dots-and-boxes 0.1.0 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 crates.io crate dots-and-boxes 0.1.0
[INFO] finished tweaking crates.io crate dots-and-boxes 0.1.0
[INFO] tweaked toml for crates.io crate dots-and-boxes 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate dots-and-boxes 0.1.0 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] [stderr]   Downloaded cmake v0.1.48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b106274e33f5f159c5db5aa0fbe653d2425a82696ce61d6ef4d03b7be71e5769
[INFO] running `Command { std: "docker" "start" "-a" "b106274e33f5f159c5db5aa0fbe653d2425a82696ce61d6ef4d03b7be71e5769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b106274e33f5f159c5db5aa0fbe653d2425a82696ce61d6ef4d03b7be71e5769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b106274e33f5f159c5db5aa0fbe653d2425a82696ce61d6ef4d03b7be71e5769", kill_on_drop: false }`
[INFO] [stdout] b106274e33f5f159c5db5aa0fbe653d2425a82696ce61d6ef4d03b7be71e5769
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ae8f381f8400416e76306f55c03dcfd7e2a98718645700069afa768ed5b65467
[INFO] running `Command { std: "docker" "start" "-a" "ae8f381f8400416e76306f55c03dcfd7e2a98718645700069afa768ed5b65467", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.73
[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 cmake v0.1.48
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking dots-and-boxes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `COLOR_NAMES`
[INFO] [stdout]  --> src/options.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::colors::{COLOR_NAMES, self};
[INFO] [stdout]   |                     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `COLOR_NAMES`
[INFO] [stdout]  --> src/options.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::colors::{COLOR_NAMES, self};
[INFO] [stdout]   |                     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_to_terminal` is never used
[INFO] [stdout]    --> src/logic.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 25  | impl DotsAndBoxesState {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 109 |     pub fn print_to_terminal(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_to_terminal` is never used
[INFO] [stdout]    --> src/logic.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 25  | impl DotsAndBoxesState {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 109 |     pub fn print_to_terminal(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.52s
[INFO] running `Command { std: "docker" "inspect" "ae8f381f8400416e76306f55c03dcfd7e2a98718645700069afa768ed5b65467", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae8f381f8400416e76306f55c03dcfd7e2a98718645700069afa768ed5b65467", kill_on_drop: false }`
[INFO] [stdout] ae8f381f8400416e76306f55c03dcfd7e2a98718645700069afa768ed5b65467
[INFO] checking dots-and-boxes-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate dots-and-boxes 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate dots-and-boxes 0.1.0 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 crates.io crate dots-and-boxes 0.1.0
[INFO] finished tweaking crates.io crate dots-and-boxes 0.1.0
[INFO] tweaked toml for crates.io crate dots-and-boxes 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate dots-and-boxes 0.1.0 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e305a0449af0ce0d59f7e69dd4484788816ac2bbdc8e39a49a2cd16226ad8823
[INFO] running `Command { std: "docker" "start" "-a" "e305a0449af0ce0d59f7e69dd4484788816ac2bbdc8e39a49a2cd16226ad8823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e305a0449af0ce0d59f7e69dd4484788816ac2bbdc8e39a49a2cd16226ad8823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e305a0449af0ce0d59f7e69dd4484788816ac2bbdc8e39a49a2cd16226ad8823", kill_on_drop: false }`
[INFO] [stdout] e305a0449af0ce0d59f7e69dd4484788816ac2bbdc8e39a49a2cd16226ad8823
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 684dae78f038849679d6c6e3a7e1d68a728c424beb24c03ff4c72fa809d3f78b
[INFO] running `Command { std: "docker" "start" "-a" "684dae78f038849679d6c6e3a7e1d68a728c424beb24c03ff4c72fa809d3f78b", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.73
[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 cmake v0.1.48
[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" "684dae78f038849679d6c6e3a7e1d68a728c424beb24c03ff4c72fa809d3f78b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "684dae78f038849679d6c6e3a7e1d68a728c424beb24c03ff4c72fa809d3f78b", kill_on_drop: false }`
[INFO] [stdout] 684dae78f038849679d6c6e3a7e1d68a728c424beb24c03ff4c72fa809d3f78b