[INFO] cloning repository https://github.com/MgShepherd/MEngine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MgShepherd/MEngine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMgShepherd%2FMEngine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMgShepherd%2FMEngine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2c15a4e5a390b05ee39931fdfced0cf3a7ff9f3
[INFO] checking MgShepherd/MEngine against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMgShepherd%2FMEngine" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MgShepherd/MEngine 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/MgShepherd/MEngine
[INFO] finished tweaking git repo https://github.com/MgShepherd/MEngine
[INFO] tweaked toml for git repo https://github.com/MgShepherd/MEngine written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MgShepherd/MEngine 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 image v0.25.0
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7928695dc9dfd33744da7e511bd7088e8606a5021437a1e83fc6747b493deec
[INFO] running `Command { std: "docker" "start" "-a" "c7928695dc9dfd33744da7e511bd7088e8606a5021437a1e83fc6747b493deec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7928695dc9dfd33744da7e511bd7088e8606a5021437a1e83fc6747b493deec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7928695dc9dfd33744da7e511bd7088e8606a5021437a1e83fc6747b493deec", kill_on_drop: false }`
[INFO] [stdout] c7928695dc9dfd33744da7e511bd7088e8606a5021437a1e83fc6747b493deec
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 935502cf01b0bbc95fd429a5af2f6ea1efba41e29f8b317b62ff368d0ab3d9ef
[INFO] running `Command { std: "docker" "start" "-a" "935502cf01b0bbc95fd429a5af2f6ea1efba41e29f8b317b62ff368d0ab3d9ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
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[INFO] [stderr]     Checking m_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `wgpu` is imported redundantly
[INFO] [stdout]  --> src/engine_instance.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use wgpu::{self, CreateSurfaceError, RequestDeviceError};
[INFO] [stdout]   |            ^^^^ the item `wgpu` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `wgpu` is imported redundantly
[INFO] [stdout]  --> src/engine_instance.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use wgpu::{self, CreateSurfaceError, RequestDeviceError};
[INFO] [stdout]   |            ^^^^ the item `wgpu` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 50s
[INFO] running `Command { std: "docker" "inspect" "935502cf01b0bbc95fd429a5af2f6ea1efba41e29f8b317b62ff368d0ab3d9ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "935502cf01b0bbc95fd429a5af2f6ea1efba41e29f8b317b62ff368d0ab3d9ef", kill_on_drop: false }`
[INFO] [stdout] 935502cf01b0bbc95fd429a5af2f6ea1efba41e29f8b317b62ff368d0ab3d9ef