[INFO] cloning repository https://github.com/OCamlPro/mikino
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OCamlPro/mikino" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOCamlPro%2Fmikino", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOCamlPro%2Fmikino'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10d48af408cbf415c475a000d00a63d999f1d045
[INFO] documenting OCamlPro/mikino against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOCamlPro%2Fmikino" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/OCamlPro/mikino on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OCamlPro/mikino
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/OCamlPro/mikino
[INFO] tweaked toml for git repo https://github.com/OCamlPro/mikino written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--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 miniz_oxide v0.5.3
[INFO] [stderr]   Downloaded peg-runtime v0.8.0
[INFO] [stderr]   Downloaded peg v0.8.0
[INFO] [stderr]   Downloaded peg-macros v0.8.0
[INFO] [stderr]   Downloaded readonly v0.2.1
[INFO] [stderr]   Downloaded object v0.28.4
[INFO] [stderr]   Downloaded rsmt2 v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e37ed1d6c4a065f678cffe177862545b87ad7b71ebcffbe8214ebaf9e7904944
[INFO] running `Command { std: "docker" "start" "-a" "e37ed1d6c4a065f678cffe177862545b87ad7b71ebcffbe8214ebaf9e7904944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e37ed1d6c4a065f678cffe177862545b87ad7b71ebcffbe8214ebaf9e7904944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e37ed1d6c4a065f678cffe177862545b87ad7b71ebcffbe8214ebaf9e7904944", kill_on_drop: false }`
[INFO] [stdout] e37ed1d6c4a065f678cffe177862545b87ad7b71ebcffbe8214ebaf9e7904944
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ce0723c2ed320e5ccd0957140e176ce20dac9ca963df3861e5c6569c7c0cdf9
[INFO] running `Command { std: "docker" "start" "-a" "9ce0723c2ed320e5ccd0957140e176ce20dac9ca963df3861e5c6569c7c0cdf9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling peg-runtime v0.8.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]    Compiling peg-macros v0.8.0
[INFO] [stderr]     Checking peg v0.8.0
[INFO] [stderr]     Checking rsmt2 v0.16.0
[INFO] [stderr]    Compiling readonly v0.2.1
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]  Documenting mikino_api v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.06s
[INFO] running `Command { std: "docker" "inspect" "9ce0723c2ed320e5ccd0957140e176ce20dac9ca963df3861e5c6569c7c0cdf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ce0723c2ed320e5ccd0957140e176ce20dac9ca963df3861e5c6569c7c0cdf9", kill_on_drop: false }`
[INFO] [stdout] 9ce0723c2ed320e5ccd0957140e176ce20dac9ca963df3861e5c6569c7c0cdf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 0bd674b83776624fbf4ceddf4ecf8d0edf7610ae8f36a20f457d79b490df0e2a
[INFO] running `Command { std: "docker" "start" "-a" "0bd674b83776624fbf4ceddf4ecf8d0edf7610ae8f36a20f457d79b490df0e2a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling peg-runtime v0.8.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling peg-macros v0.8.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking peg v0.8.0
[INFO] [stderr]    Compiling readonly v0.2.1
[INFO] [stderr]     Checking rsmt2 v0.16.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]  Documenting mikino_api v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of "!", "##", "$", "&", "(", "--", "@", "expected", "position", "precedence", "quiet", "}"
[INFO] [stdout]     --> src/parse.rs:195:1
[INFO] [stdout]      |
[INFO] [stdout] 195  | / peg::parser! {
[INFO] [stdout] 196  | |     /// PEG parsing rules, requires the `parser` feature.
[INFO] [stdout] 197  | |     ///
[INFO] [stdout] 198  | |     /// The [`crate::TRANS_DEMO`] constant illustrates and discusses the syntax expected by the
[INFO] [stdout] ...    |
[INFO] [stdout] 1102 | |     }
[INFO] [stdout] 1103 | | }
[INFO] [stdout]      | |_^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `peg::parser` (in Nightly builds, run with -Z macro-backtrace for more info)
[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] [stderr] error: could not document `mikino_api`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name mikino_api src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat -Z unstable-options --document-private-items -C metadata=c34907efb5ca3cdf -L dependency=/opt/rustwide/target/debug/deps --extern either=/opt/rustwide/target/debug/deps/libeither-bfd18a3a5464db9f.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-72179d85b350fa60.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-d06e52efc6657258.rmeta --extern peg=/opt/rustwide/target/debug/deps/libpeg-4095b7751ac99eac.rmeta --extern readonly=/opt/rustwide/target/debug/deps/libreadonly-121591e57b00cd63.so --extern rsmt2=/opt/rustwide/target/debug/deps/librsmt2-2b553b0e9cbdba16.rmeta --extern-html-root-url 'either=https://docs.rs/either/1.6.1/' --extern-html-root-url 'error_chain=https://docs.rs/error-chain/0.12.4/' --extern-html-root-url 'lazy_static=https://docs.rs/lazy_static/1.4.0/' --extern-html-root-url 'num=https://docs.rs/num/0.4.0/' --extern-html-root-url 'peg=https://docs.rs/peg/0.8.0/' --extern-html-root-url 'readonly=https://docs.rs/readonly/0.2.1/' --extern-html-root-url 'rsmt2=https://docs.rs/rsmt2/0.16.0/' -Zunstable-options --crate-version 0.9.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0bd674b83776624fbf4ceddf4ecf8d0edf7610ae8f36a20f457d79b490df0e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bd674b83776624fbf4ceddf4ecf8d0edf7610ae8f36a20f457d79b490df0e2a", kill_on_drop: false }`
[INFO] [stdout] 0bd674b83776624fbf4ceddf4ecf8d0edf7610ae8f36a20f457d79b490df0e2a