[INFO] cloning repository https://github.com/urugang/create-lang-with-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/urugang/create-lang-with-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furugang%2Fcreate-lang-with-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furugang%2Fcreate-lang-with-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1443b2f41183f242324d59b1e2a8827acf6bbfdd
[INFO] documenting urugang/create-lang-with-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%2Furugang%2Fcreate-lang-with-rust" "/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/urugang/create-lang-with-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/urugang/create-lang-with-rust
[INFO] finished tweaking git repo https://github.com/urugang/create-lang-with-rust
[INFO] tweaked toml for git repo https://github.com/urugang/create-lang-with-rust written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/urugang/create-lang-with-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 test-case-derive v0.2.1
[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" "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] [stdout] e8891d035c40f3dbebe51812709e7ae034b78c1e4b369f971b109a27165a669e
[INFO] running `Command { std: "docker" "start" "-a" "e8891d035c40f3dbebe51812709e7ae034b78c1e4b369f971b109a27165a669e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8891d035c40f3dbebe51812709e7ae034b78c1e4b369f971b109a27165a669e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8891d035c40f3dbebe51812709e7ae034b78c1e4b369f971b109a27165a669e", kill_on_drop: false }`
[INFO] [stdout] e8891d035c40f3dbebe51812709e7ae034b78c1e4b369f971b109a27165a669e
[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" "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] e8e034780961469022942cc4eb3fb3771ecb8591cf0ff364d6ee43ed2109370d
[INFO] running `Command { std: "docker" "start" "-a" "e8e034780961469022942cc4eb3fb3771ecb8591cf0ff364d6ee43ed2109370d", 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]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking pest v2.1.0
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling pest_meta v2.1.0
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]  Documenting meetup-2019-02 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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `X..` patterns in slices are experimental
[INFO] [stdout]   --> src/codegen.rs:70:51
[INFO] [stdout]    |
[INFO] [stdout] 70 |                 [SExp::Ident("+"), first, second, rest..] => {
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #67264 <https://github.com/rust-lang/rust/issues/67264> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `X..` patterns in slices are experimental
[INFO] [stdout]   --> src/codegen.rs:73:51
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 [SExp::Ident("-"), first, second, rest..] => {
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #67264 <https://github.com/rust-lang/rust/issues/67264> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `X..` patterns in slices are experimental
[INFO] [stdout]   --> src/codegen.rs:76:51
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 [SExp::Ident("<"), first, second, rest..] => {
[INFO] [stdout]    |                                                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #67264 <https://github.com/rust-lang/rust/issues/67264> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `X..` patterns in slices are experimental
[INFO] [stdout]    --> src/codegen.rs:115:26
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 [callee, args..] => {
[INFO] [stdout]     |                          ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #67264 <https://github.com/rust-lang/rust/issues/67264> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `meetup-2019-02`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name meetup_2019_02 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 lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-381b96bbd07c50ac.rmeta --extern pest=/opt/rustwide/target/debug/deps/libpest-ac44d26216e58dc2.rmeta --extern pest_derive=/opt/rustwide/target/debug/deps/libpest_derive-c2cd52b789c7a1c1.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e8e034780961469022942cc4eb3fb3771ecb8591cf0ff364d6ee43ed2109370d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8e034780961469022942cc4eb3fb3771ecb8591cf0ff364d6ee43ed2109370d", kill_on_drop: false }`
[INFO] [stdout] e8e034780961469022942cc4eb3fb3771ecb8591cf0ff364d6ee43ed2109370d
