[INFO] fetching crate webgl 0.1.0...
[INFO] testing webgl-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate webgl 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate webgl 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate webgl 0.1.0
[INFO] finished tweaking crates.io crate webgl 0.1.0
[INFO] tweaked toml for crates.io crate webgl 0.1.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60589c458f807d1bca9682d43b8b22f4c7cdfdc86677c1fb2e4b5a3917ce2d66
[INFO] running `Command { std: "docker" "start" "-a" "60589c458f807d1bca9682d43b8b22f4c7cdfdc86677c1fb2e4b5a3917ce2d66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60589c458f807d1bca9682d43b8b22f4c7cdfdc86677c1fb2e4b5a3917ce2d66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60589c458f807d1bca9682d43b8b22f4c7cdfdc86677c1fb2e4b5a3917ce2d66", kill_on_drop: false }`
[INFO] [stdout] 60589c458f807d1bca9682d43b8b22f4c7cdfdc86677c1fb2e4b5a3917ce2d66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cebd4a1315e5693bbb9ab54a543accb64d8bee914b5399aa406d3d9fd5c9d1e7
[INFO] running `Command { std: "docker" "start" "-a" "cebd4a1315e5693bbb9ab54a543accb64d8bee914b5399aa406d3d9fd5c9d1e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling khronos_api v2.2.0
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling glenum v0.1.1
[INFO] [stderr]    Compiling gl_generator v0.8.0
[INFO] [stderr]    Compiling gl v0.9.0
[INFO] [stderr]    Compiling webgl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `gl` is imported redundantly
[INFO] [stdout]   --> src/webgl_native.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 6  | use gl;
[INFO] [stdout]    |     -- the item `gl` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 17 |         use gl;
[INFO] [stdout]    |             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `webgl` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "cebd4a1315e5693bbb9ab54a543accb64d8bee914b5399aa406d3d9fd5c9d1e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cebd4a1315e5693bbb9ab54a543accb64d8bee914b5399aa406d3d9fd5c9d1e7", kill_on_drop: false }`
[INFO] [stdout] cebd4a1315e5693bbb9ab54a543accb64d8bee914b5399aa406d3d9fd5c9d1e7