[INFO] cloning repository https://github.com/piotrkubala/nim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/piotrkubala/nim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiotrkubala%2Fnim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiotrkubala%2Fnim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17d5d6e78acfdd77a151624d40da1a519e44cdd8
[INFO] checking piotrkubala/nim against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiotrkubala%2Fnim" "/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/piotrkubala/nim 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/piotrkubala/nim
[INFO] finished tweaking git repo https://github.com/piotrkubala/nim
[INFO] tweaked toml for git repo https://github.com/piotrkubala/nim written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/piotrkubala/nim 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]     Updating git repository `https://github.com/rust-sdl2/rust-sdl2`
[INFO] [stderr]     Updating git submodule `https://github.com/libsdl-org/SDL`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.9.0-alpha.0
[INFO] [stderr]   Downloaded rand_chacha v0.9.0-alpha.0
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.0-alpha.5
[INFO] [stderr]   Downloaded zerocopy v0.8.0-alpha.5
[INFO] [stderr]   Downloaded rand v0.9.0-alpha.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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 769242cb3ca9214def71c274cbb0641d23cc4526bb216468dc57522af3c9d64d
[INFO] running `Command { std: "docker" "start" "-a" "769242cb3ca9214def71c274cbb0641d23cc4526bb216468dc57522af3c9d64d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "769242cb3ca9214def71c274cbb0641d23cc4526bb216468dc57522af3c9d64d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "769242cb3ca9214def71c274cbb0641d23cc4526bb216468dc57522af3c9d64d", kill_on_drop: false }`
[INFO] [stdout] 769242cb3ca9214def71c274cbb0641d23cc4526bb216468dc57522af3c9d64d
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 498561f2c0fcecda7e204cb39a4ab207202c6f020f6650f35927c36f3659cc7d
[INFO] running `Command { std: "docker" "start" "-a" "498561f2c0fcecda7e204cb39a4ab207202c6f020f6650f35927c36f3659cc7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling zerocopy v0.8.0-alpha.5
[INFO] [stderr]    Compiling sdl2 v0.36.0 (https://github.com/rust-sdl2/rust-sdl2#79f8ad02)
[INFO] [stderr]    Compiling sdl2-sys v0.36.0 (https://github.com/rust-sdl2/rust-sdl2#79f8ad02)
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking rand_core v0.9.0-alpha.0
[INFO] [stderr]     Checking rand_chacha v0.9.0-alpha.0
[INFO] [stderr]     Checking rand v0.9.0-alpha.0
[INFO] [stderr]     Checking nim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/game/system.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Other(Event)
[INFO] [stdout]    |     ----- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Other(())
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_default_heap` and `remove_last_heap` are never used
[INFO] [stdout]    --> src/game/nim/nim_game.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl NimGame {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn add_default_heap(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 168 |     pub fn remove_last_heap(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/game/system.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Other(Event)
[INFO] [stdout]    |     ----- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Other(())
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_default_heap` and `remove_last_heap` are never used
[INFO] [stdout]    --> src/game/nim/nim_game.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl NimGame {
[INFO] [stdout]     | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn add_default_heap(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 168 |     pub fn remove_last_heap(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[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 1.89s
[INFO] running `Command { std: "docker" "inspect" "498561f2c0fcecda7e204cb39a4ab207202c6f020f6650f35927c36f3659cc7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "498561f2c0fcecda7e204cb39a4ab207202c6f020f6650f35927c36f3659cc7d", kill_on_drop: false }`
[INFO] [stdout] 498561f2c0fcecda7e204cb39a4ab207202c6f020f6650f35927c36f3659cc7d