[INFO] cloning repository https://github.com/LinusCDE/rm-video-player
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LinusCDE/rm-video-player" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLinusCDE%2Frm-video-player", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLinusCDE%2Frm-video-player'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d75a67352997db311397fd37ac1bac0cc4b2a01
[INFO] documenting LinusCDE/rm-video-player against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLinusCDE%2Frm-video-player" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LinusCDE/rm-video-player on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/LinusCDE/rm-video-player
[INFO] finished tweaking git repo https://github.com/LinusCDE/rm-video-player
[INFO] tweaked toml for git repo https://github.com/LinusCDE/rm-video-player written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/LinusCDE/rm-video-player already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zstd-safe v2.0.5+zstd.1.4.5
[INFO] [stderr]   Downloaded adler32 v1.2.0
[INFO] [stderr]   Downloaded zstd v0.5.3+zstd.1.4.5
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded line_drawing v0.8.0
[INFO] [stderr]   Downloaded mmap v0.1.1
[INFO] [stderr]   Downloaded atomic v0.4.6
[INFO] [stderr]   Downloaded cgmath v0.17.0
[INFO] [stderr]   Downloaded nix v0.8.1
[INFO] [stderr]   Downloaded epoll v4.3.1
[INFO] [stderr]   Downloaded lua52-sys v0.1.2
[INFO] [stderr]   Downloaded zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]   Downloaded hlua v0.4.1
[INFO] [stderr]   Downloaded fixedbitset v0.1.9
[INFO] [stderr]   Downloaded evdev v0.10.1
[INFO] [stderr]   Downloaded ioctl-gen v0.1.1
[INFO] [stderr]   Downloaded stopwatch v0.0.7
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] [stderr]   Downloaded aabb-quadtree v0.1.0
[INFO] [stderr]   Downloaded libc v0.1.12
[INFO] [stderr]   Downloaded libremarkable v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] 6bab5aaa78b760e757c973509c890b0fe978f5dd2a8b9703cba04d54287d0f6f
[INFO] running `Command { std: "docker" "start" "-a" "6bab5aaa78b760e757c973509c890b0fe978f5dd2a8b9703cba04d54287d0f6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bab5aaa78b760e757c973509c890b0fe978f5dd2a8b9703cba04d54287d0f6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bab5aaa78b760e757c973509c890b0fe978f5dd2a8b9703cba04d54287d0f6f", kill_on_drop: false }`
[INFO] [stdout] 6bab5aaa78b760e757c973509c890b0fe978f5dd2a8b9703cba04d54287d0f6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8aac646e6906ac89791848448a3da2d85214290c60160cc417604f2d8f1fa85e
[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" "8aac646e6906ac89791848448a3da2d85214290c60160cc417604f2d8f1fa85e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cgmath v0.17.0
[INFO] [stderr]     Checking atomic v0.4.6
[INFO] [stderr]     Checking ioctl-gen v0.1.1
[INFO] [stderr]     Checking aabb-quadtree v0.1.0
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking epoll v4.3.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]    Compiling lua52-sys v0.1.2
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/atomic-0.4.6/src/lib.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |     feature = "nightly", feature(const_fn, cfg_target_has_atomic, atomic_min_max)
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking line_drawing v0.8.0
[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 `atomic`.
[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" "8aac646e6906ac89791848448a3da2d85214290c60160cc417604f2d8f1fa85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8aac646e6906ac89791848448a3da2d85214290c60160cc417604f2d8f1fa85e", kill_on_drop: false }`
[INFO] [stdout] 8aac646e6906ac89791848448a3da2d85214290c60160cc417604f2d8f1fa85e