[INFO] cloning repository https://github.com/souvik1997/radish
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/souvik1997/radish" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsouvik1997%2Fradish", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsouvik1997%2Fradish'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 398b7f0bba49ff0789344013632e1b4886e9f620
[INFO] documenting souvik1997/radish 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%2Fsouvik1997%2Fradish" "/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/souvik1997/radish 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/souvik1997/radish
[INFO] finished tweaking git repo https://github.com/souvik1997/radish
[INFO] tweaked toml for git repo https://github.com/souvik1997/radish written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/souvik1997/radish 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded users v0.6.0
[INFO] [stderr]   Downloaded diesel_derives v1.0.0
[INFO] [stderr]   Downloaded libsqlite3-sys v0.8.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.33
[INFO] [stderr]   Downloaded diesel v1.0.0
[INFO] [stderr]   Downloaded rlua v0.10.2
[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] f429eadc0134604821c52397e2e8bbdeab7a2b19429d685557ad43232c595275
[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" "f429eadc0134604821c52397e2e8bbdeab7a2b19429d685557ad43232c595275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f429eadc0134604821c52397e2e8bbdeab7a2b19429d685557ad43232c595275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f429eadc0134604821c52397e2e8bbdeab7a2b19429d685557ad43232c595275", kill_on_drop: false }`
[INFO] [stdout] f429eadc0134604821c52397e2e8bbdeab7a2b19429d685557ad43232c595275
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1dbffed1341b4722583419adcd52b64aba81c0fc3d47e0e4f5ad696eec8ca162
[INFO] running `Command { std: "docker" "start" "-a" "1dbffed1341b4722583419adcd52b64aba81c0fc3d47e0e4f5ad696eec8ca162", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking unicode-segmentation v1.2.0
[INFO] [stderr]     Checking unicode-normalization v0.1.5
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking users v0.6.0
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]    Compiling libsqlite3-sys v0.8.1
[INFO] [stderr]    Compiling rlua v0.10.2
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]    Compiling diesel_derives v1.0.0
[INFO] [stderr]     Checking diesel v1.0.0
[INFO] [stderr]  Documenting radish v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(collections_range)]
[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 `radish`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name radish 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 bitflags=/opt/rustwide/target/debug/deps/libbitflags-4140647386bcb2bf.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-471548f3a2b92259.rmeta --extern diesel=/opt/rustwide/target/debug/deps/libdiesel-14d7cf10ac0272f6.rmeta --extern glob=/opt/rustwide/target/debug/deps/libglob-e104d6e1391c475c.rmeta --extern libsqlite3_sys=/opt/rustwide/target/debug/deps/liblibsqlite3_sys-d7fd31f4e6d9ceb2.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-c4ae3e4e62267a1d.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-6452cc0249cc9839.rmeta --extern rlua=/opt/rustwide/target/debug/deps/librlua-e65a1f0c7a1c5457.rmeta --extern strsim=/opt/rustwide/target/debug/deps/libstrsim-a210b310d0630341.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-ae8ebc33438b7aab.rmeta --extern unicode_normalization=/opt/rustwide/target/debug/deps/libunicode_normalization-5a823222f3273db0.rmeta --extern unicode_segmentation=/opt/rustwide/target/debug/deps/libunicode_segmentation-160808f9d0667679.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-e8cb5a16ea0467b1.rmeta --extern users=/opt/rustwide/target/debug/deps/libusers-f4184867ebad1118.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "1dbffed1341b4722583419adcd52b64aba81c0fc3d47e0e4f5ad696eec8ca162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dbffed1341b4722583419adcd52b64aba81c0fc3d47e0e4f5ad696eec8ca162", kill_on_drop: false }`
[INFO] [stdout] 1dbffed1341b4722583419adcd52b64aba81c0fc3d47e0e4f5ad696eec8ca162