[INFO] cloning repository https://github.com/woodgear/word-forms-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/woodgear/word-forms-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwoodgear%2Fword-forms-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwoodgear%2Fword-forms-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9962413f124091519fc2c1889b584ce2510fc60
[INFO] documenting woodgear/word-forms-rust against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwoodgear%2Fword-forms-rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/woodgear/word-forms-rust on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/woodgear/word-forms-rust
[INFO] finished tweaking git repo https://github.com/woodgear/word-forms-rust
[INFO] tweaked toml for git repo https://github.com/woodgear/word-forms-rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/woodgear/word-forms-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cute v0.3.0
[INFO] [stderr]   Downloaded Inflector v0.11.3
[INFO] [stderr]   Downloaded regex v1.0.2
[INFO] [stderr]   Downloaded rayon v1.0.2
[INFO] [stderr]   Downloaded difflib v0.4.0
[INFO] [stderr]   Downloaded strum v0.10.0
[INFO] [stderr]   Downloaded strum_macros v0.10.0
[INFO] [stderr]   Downloaded syn v0.14.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "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] e5ff8c4f758a9b29076d1d1d696c9dcc7fc44c0895a15a9ee97a90876e2a0ea0
[INFO] running `Command { std: "docker" "start" "-a" "e5ff8c4f758a9b29076d1d1d696c9dcc7fc44c0895a15a9ee97a90876e2a0ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5ff8c4f758a9b29076d1d1d696c9dcc7fc44c0895a15a9ee97a90876e2a0ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5ff8c4f758a9b29076d1d1d696c9dcc7fc44c0895a15a9ee97a90876e2a0ea0", kill_on_drop: false }`
[INFO] [stdout] e5ff8c4f758a9b29076d1d1d696c9dcc7fc44c0895a15a9ee97a90876e2a0ea0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e9a8684837bd153809bc132f7dad9860f36e918c21ef0305303342695ea3eae
[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" "2e9a8684837bd153809bc132f7dad9860f36e918c21ef0305303342695ea3eae", kill_on_drop: false }`
[INFO] [stderr]     Checking strum v0.10.0
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling syn v0.14.5
[INFO] [stderr]     Checking Inflector v0.11.3
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rayon v1.0.2
[INFO] [stderr]    Compiling strum_macros v0.10.0
[INFO] [stderr]  Documenting word-forms-rust v0.1.0 (/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(try_from)]
[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 `word-forms-rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name word_forms_rust 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 inflector=/opt/rustwide/target/debug/deps/libinflector-09db9b764436d67d.rmeta --extern cute=/opt/rustwide/target/debug/deps/libcute-54d95158ea7a750c.rmeta --extern difflib=/opt/rustwide/target/debug/deps/libdifflib-870a7175e6c43e1b.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-e74a1a8851a2deb0.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-3feaf01ad98d38a5.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-cade6d66975e0e0e.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-8c4ba43b6482ca68.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-c795e11593d6606c.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-7fcce365e2522efb.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-45ade1864e8040ad.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2e9a8684837bd153809bc132f7dad9860f36e918c21ef0305303342695ea3eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e9a8684837bd153809bc132f7dad9860f36e918c21ef0305303342695ea3eae", kill_on_drop: false }`
[INFO] [stdout] 2e9a8684837bd153809bc132f7dad9860f36e918c21ef0305303342695ea3eae
