[INFO] fetching crate wrflib_widget 0.0.3...
[INFO] checking wrflib_widget-0.0.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate wrflib_widget 0.0.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate wrflib_widget 0.0.3 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 crates.io crate wrflib_widget 0.0.3
[INFO] finished tweaking crates.io crate wrflib_widget 0.0.3
[INFO] tweaked toml for crates.io crate wrflib_widget 0.0.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 41 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding time v0.1.45 (latest: v0.3.34)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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 wrflib_objc_sys v0.0.3
[INFO] [stderr]   Downloaded wio v0.2.2
[INFO] [stderr]   Downloaded wrflib_glx_sys v0.0.3
[INFO] [stderr]   Downloaded wrflib_shader_compiler v0.0.3
[INFO] [stderr]   Downloaded wrflib v0.0.3
[INFO] [stderr]   Downloaded wrflib_vector v0.0.3
[INFO] [stderr]   Downloaded wrflib_x11_sys v0.0.3
[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] eb5bdd9fb28e94f644927e02392ae80314fd27995de0b9e13fa58abb1d6aaa69
[INFO] running `Command { std: "docker" "start" "-a" "eb5bdd9fb28e94f644927e02392ae80314fd27995de0b9e13fa58abb1d6aaa69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb5bdd9fb28e94f644927e02392ae80314fd27995de0b9e13fa58abb1d6aaa69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb5bdd9fb28e94f644927e02392ae80314fd27995de0b9e13fa58abb1d6aaa69", kill_on_drop: false }`
[INFO] [stdout] eb5bdd9fb28e94f644927e02392ae80314fd27995de0b9e13fa58abb1d6aaa69
[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] 3540ca07a1f79831575cf011dce3fca259795425550391b562832afc96cc46ca
[INFO] running `Command { std: "docker" "start" "-a" "3540ca07a1f79831575cf011dce3fca259795425550391b562832afc96cc46ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling xml-rs v0.8.20
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling wrflib_x11_sys v0.0.3
[INFO] [stderr]    Compiling wrflib_glx_sys v0.0.3
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking ureq v2.9.6
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking wrflib_vector v0.0.3
[INFO] [stderr]     Checking wrflib_shader_compiler v0.0.3
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]     Checking wrflib v0.0.3
[INFO] [stderr]     Checking wrflib_widget v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ElementsIterator` is never constructed
[INFO] [stdout]    --> src/dock.rs:811:8
[INFO] [stdout]     |
[INFO] [stdout] 811 | struct ElementsIterator<'a, ID, T>
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ElementsIterator` is never constructed
[INFO] [stdout]    --> src/dock.rs:811:8
[INFO] [stdout]     |
[INFO] [stdout] 811 | struct ElementsIterator<'a, ID, T>
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.13s
[INFO] running `Command { std: "docker" "inspect" "3540ca07a1f79831575cf011dce3fca259795425550391b562832afc96cc46ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3540ca07a1f79831575cf011dce3fca259795425550391b562832afc96cc46ca", kill_on_drop: false }`
[INFO] [stdout] 3540ca07a1f79831575cf011dce3fca259795425550391b562832afc96cc46ca