[INFO] cloning repository https://github.com/Sh4d1/rush
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sh4d1/rush" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSh4d1%2Frush", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSh4d1%2Frush'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2bb2b0979c99102ae25b054528185c5bc72b1e5e
[INFO] documenting Sh4d1/rush 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%2FSh4d1%2Frush" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sh4d1/rush 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] started tweaking git repo https://github.com/Sh4d1/rush
[INFO] finished tweaking git repo https://github.com/Sh4d1/rush
[INFO] tweaked toml for git repo https://github.com/Sh4d1/rush written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Sh4d1/rush 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]     Updating git repository `https://github.com/nix-rust/nix`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/libc`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chan-signal v0.2.0
[INFO] [stderr]   Downloaded errno v0.1.8
[INFO] [stderr]   Downloaded cfg-if v0.1.0
[INFO] [stderr]   Downloaded encode_unicode v0.1.3
[INFO] [stderr]   Downloaded exec v0.2.0
[INFO] [stderr]   Downloaded chan v0.1.19
[INFO] [stderr]   Downloaded bit-vec v0.4.3
[INFO] [stderr]   Downloaded rustyline v1.0.0
[INFO] [stderr]   Downloaded shellexpand v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 139f110693ad6db61f74f55dee3ba2e9ec19a6eaa31a766e38511b0b1bce0d89
[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" "139f110693ad6db61f74f55dee3ba2e9ec19a6eaa31a766e38511b0b1bce0d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "139f110693ad6db61f74f55dee3ba2e9ec19a6eaa31a766e38511b0b1bce0d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139f110693ad6db61f74f55dee3ba2e9ec19a6eaa31a766e38511b0b1bce0d89", kill_on_drop: false }`
[INFO] [stdout] 139f110693ad6db61f74f55dee3ba2e9ec19a6eaa31a766e38511b0b1bce0d89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] e75a2f23a4bdf949e15b6bab6daaa62833f583da4ced63ed96ebb870c0ce49c4
[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" "e75a2f23a4bdf949e15b6bab6daaa62833f583da4ced63ed96ebb870c0ce49c4", kill_on_drop: false }`
[INFO] [stderr]     Checking bit-vec v0.4.3
[INFO] [stderr]     Checking encode_unicode v0.1.3
[INFO] [stderr]     Checking libc v0.2.20 (https://github.com/rust-lang/libc#6813109f)
[INFO] [stderr]     Checking shellexpand v1.0.0
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking errno v0.1.8
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking exec v0.2.0
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking nix v0.8.0 (https://github.com/nix-rust/nix#109b0e86)
[INFO] [stderr]     Checking chan v0.1.19
[INFO] [stderr]     Checking chan-signal v0.2.0
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking rush v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rush v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(string_split_off)]
[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 lib --crate-name rushlib src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-7e12d903d4ce5dd5.rmeta --extern chan_signal=/opt/rustwide/target/debug/deps/libchan_signal-60678444a1b9dffc.rmeta --extern exec=/opt/rustwide/target/debug/deps/libexec-559d4bfdd4af8987.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-218116732aa434b6.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-be19874148ab7ccc.rmeta --extern rustyline=/opt/rustwide/target/debug/deps/librustyline-6f69f561ba606415.rmeta --extern shellexpand=/opt/rustwide/target/debug/deps/libshellexpand-28aacbcf75956904.rmeta --cap-lints=warn --crate-version 0.2.0` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(string_split_off)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior is unexpected and probably not what you want. Consider using a crate from crates.io instead.
[INFO] [stdout]  --> src/prompt.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::env::{current_dir, home_dir};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior is unexpected and probably not what you want. Consider using a crate from crates.io instead.
[INFO] [stdout]   --> src/prompt.rs:37:23
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let homedir = home_dir().unwrap().as_path().to_str().expect("Failed : path -> str").to_string();
[INFO] [stdout]    |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/job_manager.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | / lazy_static! {
[INFO] [stdout] 4 | |     pub static ref JOB: Mutex<JobManager> = Mutex::new(JobManager::new());
[INFO] [stdout] 5 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/job_manager.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | / lazy_static! {
[INFO] [stdout] 4 | |     pub static ref JOB: Mutex<JobManager> = Mutex::new(JobManager::new());
[INFO] [stdout] 5 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e75a2f23a4bdf949e15b6bab6daaa62833f583da4ced63ed96ebb870c0ce49c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e75a2f23a4bdf949e15b6bab6daaa62833f583da4ced63ed96ebb870c0ce49c4", kill_on_drop: false }`
[INFO] [stdout] e75a2f23a4bdf949e15b6bab6daaa62833f583da4ced63ed96ebb870c0ce49c4