[INFO] fetching crate sixtyfps-rendering-backend-gl 0.1.6...
[INFO] checking sixtyfps-rendering-backend-gl-0.1.6 against master#18a6d911caba59605eb03db1452848a85d2e5879 for pr-112743
[INFO] extracting crate sixtyfps-rendering-backend-gl 0.1.6 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate sixtyfps-rendering-backend-gl 0.1.6 on toolchain 18a6d911caba59605eb03db1452848a85d2e5879
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sixtyfps-rendering-backend-gl 0.1.6
[INFO] finished tweaking crates.io crate sixtyfps-rendering-backend-gl 0.1.6
[INFO] tweaked toml for crates.io crate sixtyfps-rendering-backend-gl 0.1.6 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-general-category v0.4.0
[INFO] [stderr]   Downloaded ouroboros_macro v0.14.2
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[INFO] [stderr]   Downloaded sixtyfps-common v0.1.6
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[INFO] [stderr]   Downloaded const-field-offset v0.1.3
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[INFO] [stderr]   Downloaded data-url v0.1.1
[INFO] [stderr]   Downloaded sixtyfps-corelib v0.1.6
[INFO] [stderr]   Downloaded font-kit v0.10.1
[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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2baa23ad84a20ae4207e74546184fe1f1b959f84f28d78bfd03755a5b7e96b23
[INFO] running `Command { std: "docker" "start" "-a" "2baa23ad84a20ae4207e74546184fe1f1b959f84f28d78bfd03755a5b7e96b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2baa23ad84a20ae4207e74546184fe1f1b959f84f28d78bfd03755a5b7e96b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2baa23ad84a20ae4207e74546184fe1f1b959f84f28d78bfd03755a5b7e96b23", kill_on_drop: false }`
[INFO] [stdout] 2baa23ad84a20ae4207e74546184fe1f1b959f84f28d78bfd03755a5b7e96b23
[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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+18a6d911caba59605eb03db1452848a85d2e5879" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab992f3993d9729b28d2c76ce8447392105183abb0a855c8076b96f21be58bf7
[INFO] running `Command { std: "docker" "start" "-a" "ab992f3993d9729b28d2c76ce8447392105183abb0a855c8076b96f21be58bf7", kill_on_drop: false }`
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[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling sixtyfps-corelib-macros v0.1.6
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[INFO] [stderr]     Checking glutin v0.28.0
[INFO] [stderr]     Checking sixtyfps-corelib v0.1.6
[INFO] [stderr]     Checking femtovg v0.2.10
[INFO] [stderr]     Checking sixtyfps-rendering-backend-gl v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `winit::platform::unix::WindowExtUnix`
[INFO] [stdout]    --> glwindow.rs:408:25
[INFO] [stdout]     |
[INFO] [stdout] 408 |                     use winit::platform::unix::WindowExtUnix;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `winit::platform::unix::WindowExtUnix`
[INFO] [stdout]    --> glwindow.rs:408:25
[INFO] [stdout]     |
[INFO] [stdout] 408 |                     use winit::platform::unix::WindowExtUnix;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> glwindow.rs:409:25
[INFO] [stdout]     |
[INFO] [stdout] 409 |                     let mut winsys = "unknown";
[INFO] [stdout]     |                         ----^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> glwindow.rs:409:25
[INFO] [stdout]     |
[INFO] [stdout] 409 |                     let mut winsys = "unknown";
[INFO] [stdout]     |                         ----^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[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 [unoptimized + debuginfo] target(s) in 38.32s
[INFO] running `Command { std: "docker" "inspect" "ab992f3993d9729b28d2c76ce8447392105183abb0a855c8076b96f21be58bf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab992f3993d9729b28d2c76ce8447392105183abb0a855c8076b96f21be58bf7", kill_on_drop: false }`
[INFO] [stdout] ab992f3993d9729b28d2c76ce8447392105183abb0a855c8076b96f21be58bf7