[INFO] cloning repository https://github.com/rupansh/gb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rupansh/gb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frupansh%2Fgb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frupansh%2Fgb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f4049790da023f4a4377248899f6d0131d777e02
[INFO] checking rupansh/gb against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frupansh%2Fgb" "/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/rupansh/gb 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/rupansh/gb
[INFO] finished tweaking git repo https://github.com/rupansh/gb
[INFO] tweaked toml for git repo https://github.com/rupansh/gb written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/rupansh/gb 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]  Downloading crates ...
[INFO] [stderr]   Downloaded xkbcommon-sys v0.7.4
[INFO] [stderr]   Downloaded wayland-sys v0.25.0
[INFO] [stderr]   Downloaded wayland-commons v0.25.0
[INFO] [stderr]   Downloaded wayland-cursor v0.25.0
[INFO] [stderr]   Downloaded wayland-scanner v0.25.0
[INFO] [stderr]   Downloaded wayland-client v0.25.0
[INFO] [stderr]   Downloaded wayland-protocols v0.25.0
[INFO] [stderr]   Downloaded minifb v0.16.0
[INFO] [stderr]   Downloaded sdl2-sys v0.34.0
[INFO] [stderr]   Downloaded sdl2 v0.34.1
[INFO] [stderr]   Downloaded orbclient v0.3.23
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4316fa38d2deedd1f006c4bf366f459636e00ca272c403c73641ef0e0dc09ca7
[INFO] running `Command { std: "docker" "start" "-a" "4316fa38d2deedd1f006c4bf366f459636e00ca272c403c73641ef0e0dc09ca7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4316fa38d2deedd1f006c4bf366f459636e00ca272c403c73641ef0e0dc09ca7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4316fa38d2deedd1f006c4bf366f459636e00ca272c403c73641ef0e0dc09ca7", kill_on_drop: false }`
[INFO] [stdout] 4316fa38d2deedd1f006c4bf366f459636e00ca272c403c73641ef0e0dc09ca7
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93be019365525e02fc001f298ec649bfd5f53a356c9fc55d587818587ff93b55
[INFO] running `Command { std: "docker" "start" "-a" "93be019365525e02fc001f298ec649bfd5f53a356c9fc55d587818587ff93b55", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling libloading v0.6.2
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling sdl2-sys v0.34.0
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]    Compiling sdl2 v0.34.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling xkbcommon-sys v0.7.4
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking wayland-sys v0.25.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling minifb v0.16.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling wayland-scanner v0.25.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking xkb v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling wayland-client v0.25.0
[INFO] [stderr]    Compiling wayland-protocols v0.25.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking wayland-commons v0.25.0
[INFO] [stderr]     Checking wayland-cursor v0.25.0
[INFO] [stderr]     Checking gameboy-emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `alt_c` is never read
[INFO] [stdout]   --> src/cpu.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub struct Cpu {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub alt_c: u8, // alt cycles
[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: field `alt_c` is never read
[INFO] [stdout]   --> src/cpu.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub struct Cpu {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub alt_c: u8, // alt cycles
[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 16.37s
[INFO] running `Command { std: "docker" "inspect" "93be019365525e02fc001f298ec649bfd5f53a356c9fc55d587818587ff93b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93be019365525e02fc001f298ec649bfd5f53a356c9fc55d587818587ff93b55", kill_on_drop: false }`
[INFO] [stdout] 93be019365525e02fc001f298ec649bfd5f53a356c9fc55d587818587ff93b55