[INFO] cloning repository https://github.com/kkysen/wslpath
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kkysen/wslpath" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkysen%2Fwslpath", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkkysen%2Fwslpath'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f4385bc4a8e43498a9193a87645045d644c0471
[INFO] documenting kkysen/wslpath 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%2Fkkysen%2Fwslpath" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kkysen/wslpath 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/kkysen/wslpath
[INFO] finished tweaking git repo https://github.com/kkysen/wslpath
[INFO] tweaked toml for git repo https://github.com/kkysen/wslpath written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/kkysen/wslpath 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]  Downloading crates ...
[INFO] [stderr]   Downloaded paw v1.0.0
[INFO] [stderr]   Downloaded proc-mounts v0.2.4
[INFO] [stderr]   Downloaded paw-raw v1.0.0
[INFO] [stderr]   Downloaded paw-attributes v1.0.2
[INFO] [stderr]   Downloaded print_bytes v0.2.0
[INFO] [stderr]   Downloaded optional v0.5.0
[INFO] [stderr]   Downloaded partition-identity v0.2.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 9ebdd18e308735a652b69f8aebc231956b0bd700078e635905720111cbfb8c0d
[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" "9ebdd18e308735a652b69f8aebc231956b0bd700078e635905720111cbfb8c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ebdd18e308735a652b69f8aebc231956b0bd700078e635905720111cbfb8c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ebdd18e308735a652b69f8aebc231956b0bd700078e635905720111cbfb8c0d", kill_on_drop: false }`
[INFO] [stdout] 9ebdd18e308735a652b69f8aebc231956b0bd700078e635905720111cbfb8c0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 325215e569f9b43ba53b827cda436689b04a6dccd7d476a51b620265485d4eb8
[INFO] running `Command { std: "docker" "start" "-a" "325215e569f9b43ba53b827cda436689b04a6dccd7d476a51b620265485d4eb8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking paw-raw v1.0.0
[INFO] [stderr]     Checking print_bytes v0.2.0
[INFO] [stderr]     Checking optional v0.5.0
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling paw-attributes v1.0.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]     Checking paw v1.0.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking partition-identity v0.2.8
[INFO] [stderr]     Checking proc-mounts v0.2.4
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]  Documenting wslpath 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(option_result_contains)]
[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 `wslpath`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name wslpath 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 anyhow=/opt/rustwide/target/debug/deps/libanyhow-70b362b0d3f6c020.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-fd6d789d3d38ecdf.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-9b4c3c8ba22d4f89.rmeta --extern optional=/opt/rustwide/target/debug/deps/liboptional-a19dd6ea2b2d73a4.rmeta --extern paw=/opt/rustwide/target/debug/deps/libpaw-2e242ca8df13c313.rmeta --extern print_bytes=/opt/rustwide/target/debug/deps/libprint_bytes-2f4fbd5c0fe5a345.rmeta --extern proc_mounts=/opt/rustwide/target/debug/deps/libproc_mounts-5ccbba898e08298b.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-2946f5f66abcc7f0.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-46e2cb56079c5039.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "325215e569f9b43ba53b827cda436689b04a6dccd7d476a51b620265485d4eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "325215e569f9b43ba53b827cda436689b04a6dccd7d476a51b620265485d4eb8", kill_on_drop: false }`
[INFO] [stdout] 325215e569f9b43ba53b827cda436689b04a6dccd7d476a51b620265485d4eb8