[INFO] cloning repository https://github.com/dannyow/reMarkable-fractals
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dannyow/reMarkable-fractals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdannyow%2FreMarkable-fractals", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdannyow%2FreMarkable-fractals'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7931882c15dc16c68736d0261999ee7cadbb4322
[INFO] documenting dannyow/reMarkable-fractals against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdannyow%2FreMarkable-fractals" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dannyow/reMarkable-fractals on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dannyow/reMarkable-fractals
[INFO] finished tweaking git repo https://github.com/dannyow/reMarkable-fractals
[INFO] tweaked toml for git repo https://github.com/dannyow/reMarkable-fractals written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/dannyow/reMarkable-fractals already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb29438ce59295d6a5a9e3d4876ad6ec78a6494f0aba9c1f123e07b4a84c04fb
[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" "cb29438ce59295d6a5a9e3d4876ad6ec78a6494f0aba9c1f123e07b4a84c04fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb29438ce59295d6a5a9e3d4876ad6ec78a6494f0aba9c1f123e07b4a84c04fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb29438ce59295d6a5a9e3d4876ad6ec78a6494f0aba9c1f123e07b4a84c04fb", kill_on_drop: false }`
[INFO] [stdout] cb29438ce59295d6a5a9e3d4876ad6ec78a6494f0aba9c1f123e07b4a84c04fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7f32523734605e629928cd7e06f613defe77cfee8826f4c6c1df78c1eaa511b
[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" "f7f32523734605e629928cd7e06f613defe77cfee8826f4c6c1df78c1eaa511b", kill_on_drop: false }`
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking stb_truetype v0.2.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling lua52-sys v0.1.1
[INFO] [stderr]     Checking epoll v3.1.1
[INFO] [stderr]     Checking aabb-quadtree v0.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking mmap v0.1.1
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking regex v0.2.10
[INFO] [stderr]     Checking rusttype v0.4.3
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking env_logger v0.5.9
[INFO] [stderr]     Checking evdev v0.10.1
[INFO] [stderr]     Checking hlua v0.4.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking libremarkable v0.1.25
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libremarkable-0.1.25/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(integer_atomics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libremarkable-0.1.25/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_size_of)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 compile `libremarkable`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f7f32523734605e629928cd7e06f613defe77cfee8826f4c6c1df78c1eaa511b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7f32523734605e629928cd7e06f613defe77cfee8826f4c6c1df78c1eaa511b", kill_on_drop: false }`
[INFO] [stdout] f7f32523734605e629928cd7e06f613defe77cfee8826f4c6c1df78c1eaa511b