[INFO] cloning repository https://github.com/s3bk/webgl_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/s3bk/webgl_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs3bk%2Fwebgl_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs3bk%2Fwebgl_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eeb32bd7da3c9355ba81930186c11b8b6acb5025
[INFO] testing s3bk/webgl_demo against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs3bk%2Fwebgl_demo" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/s3bk/webgl_demo on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/s3bk/webgl_demo
[INFO] finished tweaking git repo https://github.com/s3bk/webgl_demo
[INFO] tweaked toml for git repo https://github.com/s3bk/webgl_demo written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/s3bk/webgl_demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 514aefc2f2f6bf59d0d812df873203dbb1405ee0f712fa89b7f19bacda7a0eec
[INFO] running `Command { std: "docker" "start" "-a" "514aefc2f2f6bf59d0d812df873203dbb1405ee0f712fa89b7f19bacda7a0eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "514aefc2f2f6bf59d0d812df873203dbb1405ee0f712fa89b7f19bacda7a0eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "514aefc2f2f6bf59d0d812df873203dbb1405ee0f712fa89b7f19bacda7a0eec", kill_on_drop: false }`
[INFO] [stdout] 514aefc2f2f6bf59d0d812df873203dbb1405ee0f712fa89b7f19bacda7a0eec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c42752eaa0d44486ef4e695f31635709bf1045d7d2f0f070e7dfc92e27702a67
[INFO] running `Command { std: "docker" "start" "-a" "c42752eaa0d44486ef4e695f31635709bf1045d7d2f0f070e7dfc92e27702a67", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling xml-rs v0.8.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.60
[INFO] [stderr]    Compiling bytemuck v1.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling pathfinder_resources v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]    Compiling bumpalo v3.2.1
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling half v1.5.0
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling instant v0.1.2
[INFO] [stderr]    Compiling wasm-bindgen v0.2.60
[INFO] [stderr]    Compiling downcast-rs v1.1.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling xmlparser v0.13.1
[INFO] [stderr]    Compiling float-cmp v0.5.3
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling rctree v0.3.3
[INFO] [stderr]    Compiling xmlwriter v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling hashbrown v0.7.1
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling data-url v0.1.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling kurbo v0.5.11
[INFO] [stderr]    Compiling svgtypes v0.5.0
[INFO] [stderr]    Compiling roxmltree v0.9.1
[INFO] [stderr]    Compiling deflate v0.8.4
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling pathfinder_log v0.1.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling simplecss v0.2.0
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling png v0.16.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]    Compiling mio v0.6.21
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]    Compiling pathfinder_geometry v0.5.1 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling pathfinder_color v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.6
[INFO] [stderr]    Compiling usvg v0.9.0
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling dlib v0.4.1
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling const-random v0.1.8
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling image v0.23.4
[INFO] [stderr]    Compiling rusttype v0.7.9
[INFO] [stderr]    Compiling ahash v0.3.2
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling pathfinder_gpu v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling pathfinder_content v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.60
[INFO] [stderr]    Compiling wayland-commons v0.23.6
[INFO] [stderr]    Compiling calloop v0.4.4
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling pathfinder_gl v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.60
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.60
[INFO] [stderr]    Compiling js-sys v0.3.37
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.6
[INFO] [stderr]    Compiling web-sys v0.3.37
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling pathfinder_ui v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling pathfinder_renderer v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling pathfinder_export v0.1.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling pathfinder_svg v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling console_log v0.2.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.6.6
[INFO] [stderr]    Compiling winit v0.22.1
[INFO] [stderr]    Compiling glutin v0.24.0
[INFO] [stderr]    Compiling pathfinder_view v0.1.0 (https://github.com/s3bk/pathfinder_view#8f68f37f)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/pathfinder_view-e3bb902cdb8b6e4b/8f68f37/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pathfinder_view`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c42752eaa0d44486ef4e695f31635709bf1045d7d2f0f070e7dfc92e27702a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c42752eaa0d44486ef4e695f31635709bf1045d7d2f0f070e7dfc92e27702a67", kill_on_drop: false }`
[INFO] [stdout] c42752eaa0d44486ef4e695f31635709bf1045d7d2f0f070e7dfc92e27702a67