[INFO] cloning repository https://github.com/dzhibas/ripdu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dzhibas/ripdu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdzhibas%2Fripdu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdzhibas%2Fripdu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 722a2a23296b6b00997d8bd448d5c661140e61d5
[INFO] documenting dzhibas/ripdu 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%2Fdzhibas%2Fripdu" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dzhibas/ripdu 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/dzhibas/ripdu
[INFO] finished tweaking git repo https://github.com/dzhibas/ripdu
[INFO] tweaked toml for git repo https://github.com/dzhibas/ripdu written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/dzhibas/ripdu 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] da2aabdfab3323598fa92b0187ba2f9c68f40da2ce616d33764bd507329c7b76
[INFO] running `Command { std: "docker" "start" "-a" "da2aabdfab3323598fa92b0187ba2f9c68f40da2ce616d33764bd507329c7b76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da2aabdfab3323598fa92b0187ba2f9c68f40da2ce616d33764bd507329c7b76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da2aabdfab3323598fa92b0187ba2f9c68f40da2ce616d33764bd507329c7b76", kill_on_drop: false }`
[INFO] [stdout] da2aabdfab3323598fa92b0187ba2f9c68f40da2ce616d33764bd507329c7b76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] d0453727e5c0efcd9b0262fec1ddb2551a468a19860a9653a7ec190448e0eb38
[INFO] running `Command { std: "docker" "start" "-a" "d0453727e5c0efcd9b0262fec1ddb2551a468a19860a9653a7ec190448e0eb38", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.41
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking lazy_static v1.0.1
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking same-file v1.0.2
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking human-size v0.3.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking walkdir v2.1.4
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking globset v0.4.0
[INFO] [stderr]     Checking ignore v0.4.2
[INFO] [stderr]  Documenting ripdu v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.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]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(exclusive_range_pattern)]
[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 `ripdu`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name ripdu 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 clap=/opt/rustwide/target/debug/deps/libclap-a64d112ce0a2214c.rmeta --extern human_size=/opt/rustwide/target/debug/deps/libhuman_size-d43ffd55838cd4ae.rmeta --extern ignore=/opt/rustwide/target/debug/deps/libignore-ee992f08aa3e0a41.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-f7231c4bc929089f.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "d0453727e5c0efcd9b0262fec1ddb2551a468a19860a9653a7ec190448e0eb38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0453727e5c0efcd9b0262fec1ddb2551a468a19860a9653a7ec190448e0eb38", kill_on_drop: false }`
[INFO] [stdout] d0453727e5c0efcd9b0262fec1ddb2551a468a19860a9653a7ec190448e0eb38