[INFO] cloning repository https://github.com/christoph-heiss/rush
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/christoph-heiss/rush" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristoph-heiss%2Frush", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristoph-heiss%2Frush'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 006a88a75eaf411ec53262577bbbe088a36f1615
[INFO] documenting christoph-heiss/rush 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%2Fchristoph-heiss%2Frush" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/christoph-heiss/rush 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/christoph-heiss/rush
[INFO] finished tweaking git repo https://github.com/christoph-heiss/rush
[INFO] tweaked toml for git repo https://github.com/christoph-heiss/rush written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/christoph-heiss/rush 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 61f8e93f7dee2d8df9c4cb92547fc5768dec6ad317233e98c182b3ddd77cc915
[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" "61f8e93f7dee2d8df9c4cb92547fc5768dec6ad317233e98c182b3ddd77cc915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61f8e93f7dee2d8df9c4cb92547fc5768dec6ad317233e98c182b3ddd77cc915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61f8e93f7dee2d8df9c4cb92547fc5768dec6ad317233e98c182b3ddd77cc915", kill_on_drop: false }`
[INFO] [stdout] 61f8e93f7dee2d8df9c4cb92547fc5768dec6ad317233e98c182b3ddd77cc915
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] e694edc79504fd3a2aa15792ec60f7d3ad550c9c1d3381584f1cf3e4514668b6
[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" "e694edc79504fd3a2aa15792ec60f7d3ad550c9c1d3381584f1cf3e4514668b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]     Checking smallvec v0.6.1
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking lazy_static v1.0.1
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking regex-syntax v0.6.0
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking phf_shared v0.7.22
[INFO] [stderr]     Checking phf v0.7.22
[INFO] [stderr]     Checking smallstr v0.1.0
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]    Compiling terminfo v0.5.0
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]     Checking mortal v0.1.2
[INFO] [stderr]     Checking linefeed v0.5.0
[INFO] [stderr]  Documenting rush v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | #![feature(termination_trait_lib)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[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 document `rush`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name rush 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 chrono=/opt/rustwide/target/debug/deps/libchrono-dbf6a931c20bfce5.rmeta --extern getopts=/opt/rustwide/target/debug/deps/libgetopts-f303cbe89bd8ef58.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-a4e01d700bacbbb2.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-5665767950d0781a.rmeta --extern linefeed=/opt/rustwide/target/debug/deps/liblinefeed-7e87e208e15c5595.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-f1b40bf4a3bca0eb.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-b572ad9c6fc842b2.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "e694edc79504fd3a2aa15792ec60f7d3ad550c9c1d3381584f1cf3e4514668b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e694edc79504fd3a2aa15792ec60f7d3ad550c9c1d3381584f1cf3e4514668b6", kill_on_drop: false }`
[INFO] [stdout] e694edc79504fd3a2aa15792ec60f7d3ad550c9c1d3381584f1cf3e4514668b6