[INFO] cloning repository https://github.com/jonimake/MiniPLInterpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonimake/MiniPLInterpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonimake%2FMiniPLInterpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonimake%2FMiniPLInterpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4e37ad3a280e2ed53f21c6175d583897b1cc096c
[INFO] documenting jonimake/MiniPLInterpreter 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%2Fjonimake%2FMiniPLInterpreter" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonimake/MiniPLInterpreter 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/jonimake/MiniPLInterpreter
[INFO] finished tweaking git repo https://github.com/jonimake/MiniPLInterpreter
[INFO] tweaked toml for git repo https://github.com/jonimake/MiniPLInterpreter written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jonimake/MiniPLInterpreter 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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] cf424bfb79e6a7147ee2cd4dcd0afc75e5d3569e20d801664110f4cc637eac64
[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" "cf424bfb79e6a7147ee2cd4dcd0afc75e5d3569e20d801664110f4cc637eac64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf424bfb79e6a7147ee2cd4dcd0afc75e5d3569e20d801664110f4cc637eac64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf424bfb79e6a7147ee2cd4dcd0afc75e5d3569e20d801664110f4cc637eac64", kill_on_drop: false }`
[INFO] [stdout] cf424bfb79e6a7147ee2cd4dcd0afc75e5d3569e20d801664110f4cc637eac64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] 54a39e06c4df176eb34c7d47e3bec76eeda8a5dc95b7491e6e234aa449b0369f
[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" "54a39e06c4df176eb34c7d47e3bec76eeda8a5dc95b7491e6e234aa449b0369f", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.35
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking fern v0.4.4
[INFO] [stderr]    Compiling structopt-derive v0.1.6
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking clap v2.29.1
[INFO] [stderr]     Checking simplelog v0.4.4
[INFO] [stderr]     Checking structopt v0.1.6
[INFO] [stderr]  Documenting mini_pli_interpreter v0.1.0 (/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(uniform_paths, tool_lints)]
[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 `mini_pli_interpreter`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name mini_pli_interpreter 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-2e49433b28886cd1.rmeta --extern fern=/opt/rustwide/target/debug/deps/libfern-f5b32d8908ed679f.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-5597b857515926a9.rmeta --extern simplelog=/opt/rustwide/target/debug/deps/libsimplelog-ceebc5b99d23e980.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-965e4fa9bf6c6ac6.rmeta --extern structopt_derive=/opt/rustwide/target/debug/deps/libstructopt_derive-23bf07dd3df8eed9.so --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "54a39e06c4df176eb34c7d47e3bec76eeda8a5dc95b7491e6e234aa449b0369f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54a39e06c4df176eb34c7d47e3bec76eeda8a5dc95b7491e6e234aa449b0369f", kill_on_drop: false }`
[INFO] [stdout] 54a39e06c4df176eb34c7d47e3bec76eeda8a5dc95b7491e6e234aa449b0369f