[INFO] cloning repository https://github.com/vinceniko/tetrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vinceniko/tetrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinceniko%2Ftetrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinceniko%2Ftetrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0cf0007b3e5b84e491e2cf3c50a7e4b3dd176092
[INFO] documenting vinceniko/tetrust against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinceniko%2Ftetrust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vinceniko/tetrust on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vinceniko/tetrust
[INFO] finished tweaking git repo https://github.com/vinceniko/tetrust
[INFO] tweaked toml for git repo https://github.com/vinceniko/tetrust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/vinceniko/tetrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6ebac13699acac94a0a12c1bd17dff8bcef5d29f6f46202a0787c1ab01d0038
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b6ebac13699acac94a0a12c1bd17dff8bcef5d29f6f46202a0787c1ab01d0038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6ebac13699acac94a0a12c1bd17dff8bcef5d29f6f46202a0787c1ab01d0038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6ebac13699acac94a0a12c1bd17dff8bcef5d29f6f46202a0787c1ab01d0038", kill_on_drop: false }`
[INFO] [stdout] b6ebac13699acac94a0a12c1bd17dff8bcef5d29f6f46202a0787c1ab01d0038
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "RUSTDOCFLAGS=--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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 469e4eb4848380cbef1a308e7fd72ab059317fd132bfc6412970d4d84f3fb84c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "469e4eb4848380cbef1a308e7fd72ab059317fd132bfc6412970d4d84f3fb84c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling libm v0.1.3
[INFO] [stderr]     Checking immi v1.0.4
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking nix v0.13.0
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking num-complex v0.2.1
[INFO] [stderr]     Checking lewton v0.9.4
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking backtrace v0.3.30
[INFO] [stderr]     Checking rusttype v0.7.6
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking rodio v0.8.1
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking glyph_brush_layout v0.1.6
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]     Checking alga v0.9.1
[INFO] [stderr]     Checking nalgebra v0.18.0
[INFO] [stderr]     Checking twox-hash v1.4.2
[INFO] [stderr]     Checking glyph_brush v0.4.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking wayland-commons v0.21.12
[INFO] [stderr]     Checking gilrs-core v0.2.2
[INFO] [stderr]     Checking wayland-client v0.21.12
[INFO] [stderr]     Checking gilrs v0.7.1
[INFO] [stderr]     Checking wayland-protocols v0.21.12
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.5
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling euclid_macros v0.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling derivative v1.0.2
[INFO] [stderr]    Compiling smart-default v0.5.2
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking euclid v0.19.8
[INFO] [stderr]     Checking xmlparser v0.3.0
[INFO] [stderr]     Checking svgparser v0.8.1
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking gfx_core v0.9.1
[INFO] [stderr]     Checking lyon_geom v0.12.6
[INFO] [stderr]     Checking image v0.21.1
[INFO] [stderr]     Checking lyon_path v0.13.1
[INFO] [stderr]     Checking lyon_svg v0.13.0
[INFO] [stderr]     Checking lyon_tessellation v0.13.1
[INFO] [stderr]     Checking lyon_algorithms v0.13.1
[INFO] [stderr]     Checking ncollide2d v0.19.2
[INFO] [stderr]     Checking gfx_device_gl v0.16.1
[INFO] [stderr]     Checking gfx v0.18.1
[INFO] [stderr]     Checking lyon_extra v0.13.0
[INFO] [stderr]     Checking lyon v0.13.1
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking winit v0.19.1
[INFO] [stderr]    Compiling ggez v0.5.0-rc.2
[INFO] [stderr]     Checking glutin v0.20.0
[INFO] [stderr]     Checking glutin v0.21.0
[INFO] [stderr]     Checking gfx_window_glutin v0.30.0
[INFO] [stderr]     Checking quicksilver v0.3.15
[INFO] [stderr]  Documenting tetrust-quicksilver v0.1.0 (/opt/rustwide/workdir/qs)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> qs/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(checked_duration_since)] // non-panic'ing version for instant delay checking
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> qs/src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(duration_float)] // used to determine the number of frames given a frame time and total duration of an animation
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `tetrust-quicksilver`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name tetrust_quicksilver qs/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern nalgebra=/opt/rustwide/target/debug/deps/libnalgebra-076900352460799d.rmeta --extern quicksilver=/opt/rustwide/target/debug/deps/libquicksilver-7b8a457043a674a9.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-70b838ffbc33988a.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "469e4eb4848380cbef1a308e7fd72ab059317fd132bfc6412970d4d84f3fb84c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "469e4eb4848380cbef1a308e7fd72ab059317fd132bfc6412970d4d84f3fb84c", kill_on_drop: false }`
[INFO] [stdout] 469e4eb4848380cbef1a308e7fd72ab059317fd132bfc6412970d4d84f3fb84c
