[INFO] cloning repository https://github.com/Fyreway/minesweeper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Fyreway/minesweeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFyreway%2Fminesweeper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFyreway%2Fminesweeper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fda467e5c8b18f47e81a1d8627cccc7dfed296e6
[INFO] checking Fyreway/minesweeper against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFyreway%2Fminesweeper" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Fyreway/minesweeper 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/Fyreway/minesweeper
[INFO] finished tweaking git repo https://github.com/Fyreway/minesweeper
[INFO] tweaked toml for git repo https://github.com/Fyreway/minesweeper written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Fyreway/minesweeper 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded resource v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8dff16166e13c2631fa577738585bffc6033e626f5c12da3c5598dacb26b2efe
[INFO] running `Command { std: "docker" "start" "-a" "8dff16166e13c2631fa577738585bffc6033e626f5c12da3c5598dacb26b2efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dff16166e13c2631fa577738585bffc6033e626f5c12da3c5598dacb26b2efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dff16166e13c2631fa577738585bffc6033e626f5c12da3c5598dacb26b2efe", kill_on_drop: false }`
[INFO] [stdout] 8dff16166e13c2631fa577738585bffc6033e626f5c12da3c5598dacb26b2efe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d73db8c78fdd5d2ce729319997ab5d370b9a24e904b6d08ff35e5e1f4cc41b62
[INFO] running `Command { std: "docker" "start" "-a" "d73db8c78fdd5d2ce729319997ab5d370b9a24e904b6d08ff35e5e1f4cc41b62", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]     Checking resource v0.5.0
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking minesweeper v1.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `sdl`, `video_subsys`, and `image` are never read
[INFO] [stdout]   --> src/context.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Context {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 11 |     pub sdl: Sdl,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 12 |     pub video_subsys: VideoSubsystem,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 13 |     pub image: Sdl2ImageContext,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sdl`, `video_subsys`, and `image` are never read
[INFO] [stdout]   --> src/context.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Context {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 11 |     pub sdl: Sdl,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 12 |     pub video_subsys: VideoSubsystem,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 13 |     pub image: Sdl2ImageContext,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.69s
[INFO] running `Command { std: "docker" "inspect" "d73db8c78fdd5d2ce729319997ab5d370b9a24e904b6d08ff35e5e1f4cc41b62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d73db8c78fdd5d2ce729319997ab5d370b9a24e904b6d08ff35e5e1f4cc41b62", kill_on_drop: false }`
[INFO] [stdout] d73db8c78fdd5d2ce729319997ab5d370b9a24e904b6d08ff35e5e1f4cc41b62
[INFO] checking Fyreway/minesweeper against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFyreway%2Fminesweeper" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Fyreway/minesweeper on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Fyreway/minesweeper
[INFO] finished tweaking git repo https://github.com/Fyreway/minesweeper
[INFO] tweaked toml for git repo https://github.com/Fyreway/minesweeper written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Fyreway/minesweeper 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcb0eab101985f5a952c23052d4282edaacc951bdb975ddd81b286df98f07fb6
[INFO] running `Command { std: "docker" "start" "-a" "fcb0eab101985f5a952c23052d4282edaacc951bdb975ddd81b286df98f07fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcb0eab101985f5a952c23052d4282edaacc951bdb975ddd81b286df98f07fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcb0eab101985f5a952c23052d4282edaacc951bdb975ddd81b286df98f07fb6", kill_on_drop: false }`
[INFO] [stdout] fcb0eab101985f5a952c23052d4282edaacc951bdb975ddd81b286df98f07fb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b2bf5e35a468244824f2e35cdc2750e91c72f1cf0fde520369fbc51adba3986
[INFO] running `Command { std: "docker" "start" "-a" "6b2bf5e35a468244824f2e35cdc2750e91c72f1cf0fde520369fbc51adba3986", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]     Checking resource v0.5.0
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking minesweeper v1.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `sdl`, `video_subsys`, and `image` are never read
[INFO] [stdout]   --> src/context.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Context {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 11 |     pub sdl: Sdl,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 12 |     pub video_subsys: VideoSubsystem,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 13 |     pub image: Sdl2ImageContext,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sdl`, `video_subsys`, and `image` are never read
[INFO] [stdout]   --> src/context.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Context {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 11 |     pub sdl: Sdl,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 12 |     pub video_subsys: VideoSubsystem,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 13 |     pub image: Sdl2ImageContext,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.52s
[INFO] running `Command { std: "docker" "inspect" "6b2bf5e35a468244824f2e35cdc2750e91c72f1cf0fde520369fbc51adba3986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b2bf5e35a468244824f2e35cdc2750e91c72f1cf0fde520369fbc51adba3986", kill_on_drop: false }`
[INFO] [stdout] 6b2bf5e35a468244824f2e35cdc2750e91c72f1cf0fde520369fbc51adba3986