[INFO] fetching crate orga 0.1.10...
[INFO] documenting orga-0.1.10 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate orga 0.1.10 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate orga 0.1.10 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 crates.io crate orga 0.1.10
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate orga 0.1.10
[INFO] tweaked toml for crates.io crate orga 0.1.10 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate orga 0.1.10 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-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddcef619f4ad119a9342952756413797ca23ba9d960ea34c257d6a98c5eceb3f
[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" "ddcef619f4ad119a9342952756413797ca23ba9d960ea34c257d6a98c5eceb3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ddcef619f4ad119a9342952756413797ca23ba9d960ea34c257d6a98c5eceb3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddcef619f4ad119a9342952756413797ca23ba9d960ea34c257d6a98c5eceb3f", kill_on_drop: false }`
[INFO] [stdout] ddcef619f4ad119a9342952756413797ca23ba9d960ea34c257d6a98c5eceb3f
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 76d96ed0248fe3ddcfcf4206bcf6eacf9619dbd5aba3e4019c3c55d5b05853c3
[INFO] running `Command { std: "docker" "start" "-a" "76d96ed0248fe3ddcfcf4206bcf6eacf9619dbd5aba3e4019c3c55d5b05853c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling seq-macro v0.1.5
[INFO] [stderr]     Checking async-channel v1.1.1
[INFO] [stderr]     Checking libc v0.2.73
[INFO] [stderr]     Checking futures-lite v0.1.10
[INFO] [stderr]     Checking blocking v0.4.7
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling ed-derive v0.1.1
[INFO] [stderr]    Compiling orga-macros v0.1.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking ed v0.1.3
[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/ed-0.1.3/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(optin_builtin_traits)]
[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 `ed`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "76d96ed0248fe3ddcfcf4206bcf6eacf9619dbd5aba3e4019c3c55d5b05853c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76d96ed0248fe3ddcfcf4206bcf6eacf9619dbd5aba3e4019c3c55d5b05853c3", kill_on_drop: false }`
[INFO] [stdout] 76d96ed0248fe3ddcfcf4206bcf6eacf9619dbd5aba3e4019c3c55d5b05853c3