[INFO] cloning repository https://github.com/zaphar/ucg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zaphar/ucg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaphar%2Fucg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaphar%2Fucg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c0798513c7cb6b167d4fad13b585b7552660ae43
[INFO] documenting zaphar/ucg against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaphar%2Fucg" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zaphar/ucg on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zaphar/ucg
[INFO] finished tweaking git repo https://github.com/zaphar/ucg
[INFO] tweaked toml for git repo https://github.com/zaphar/ucg written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/zaphar/ucg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-05-20" "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] b518f2f04b4e97be2c43f99ad8f3b12c3ebb2dce8177f695ed3b0085424136ed
[INFO] running `Command { std: "docker" "start" "-a" "b518f2f04b4e97be2c43f99ad8f3b12c3ebb2dce8177f695ed3b0085424136ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b518f2f04b4e97be2c43f99ad8f3b12c3ebb2dce8177f695ed3b0085424136ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b518f2f04b4e97be2c43f99ad8f3b12c3ebb2dce8177f695ed3b0085424136ed", kill_on_drop: false }`
[INFO] [stdout] b518f2f04b4e97be2c43f99ad8f3b12c3ebb2dce8177f695ed3b0085424136ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bef9d3c4ebcf88f0447005491a4234edfa8daed5537a7b5fb1c14f5e2854162
[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" "3bef9d3c4ebcf88f0447005491a4234edfa8daed5537a7b5fb1c14f5e2854162", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking abortable_parser v0.2.3
[INFO] [stderr]     Checking simple-error v0.2.3
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling dirs v3.0.1
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]    Compiling ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking rustyline v8.0.0
[INFO] [stderr]  Documenting ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 5th rule of macro `make_tok` is never used
[INFO] [stdout]    --> src/ast/mod.rs:189:5
[INFO] [stdout]     |
[INFO] [stdout] 189 |     (PUNCT => $e:expr, $i:expr) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macro_rules)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7th rule of macro `make_tok` is never used
[INFO] [stdout]    --> src/ast/mod.rs:197:5
[INFO] [stdout]     |
[INFO] [stdout] 197 |     ($e:expr, $i:expr) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2nd rule of macro `make_tok` is never used
[INFO] [stdout]    --> src/ast/mod.rs:177:5
[INFO] [stdout]     |
[INFO] [stdout] 177 |     (WS => $i:expr) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6th rule of macro `make_tok` is never used
[INFO] [stdout]    --> src/ast/mod.rs:193:5
[INFO] [stdout]     |
[INFO] [stdout] 193 |     (DIGIT => $e:expr, $i:expr) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1st rule of macro `make_tok` is never used
[INFO] [stdout]    --> src/ast/mod.rs:173:5
[INFO] [stdout]     |
[INFO] [stdout] 173 |     (EOF => $i:expr) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4th rule of macro `make_tok` is never used
[INFO] [stdout]    --> src/ast/mod.rs:185:5
[INFO] [stdout]     |
[INFO] [stdout] 185 |     (QUOT => $e:expr, $i:expr) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4th rule of macro `match_type` is never used
[INFO] [stdout]    --> src/tokenizer/mod.rs:589:5
[INFO] [stdout]     |
[INFO] [stdout] 589 |     ($i:expr,COMMENT) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14th rule of macro `match_type` is never used
[INFO] [stdout]    --> src/tokenizer/mod.rs:629:5
[INFO] [stdout]     |
[INFO] [stdout] 629 |     ($i:expr,PUNCT) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3rd rule of macro `match_type` is never used
[INFO] [stdout]    --> src/tokenizer/mod.rs:585:5
[INFO] [stdout]     |
[INFO] [stdout] 585 |     ($i:expr,COMMENT => $h:expr) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13th rule of macro `match_type` is never used
[INFO] [stdout]    --> src/tokenizer/mod.rs:625:5
[INFO] [stdout]     |
[INFO] [stdout] 625 |     ($i:expr,PUNCT => $h:expr) => {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.48s
[INFO] running `Command { std: "docker" "inspect" "3bef9d3c4ebcf88f0447005491a4234edfa8daed5537a7b5fb1c14f5e2854162", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bef9d3c4ebcf88f0447005491a4234edfa8daed5537a7b5fb1c14f5e2854162", kill_on_drop: false }`
[INFO] [stdout] 3bef9d3c4ebcf88f0447005491a4234edfa8daed5537a7b5fb1c14f5e2854162
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 384120c41a5d6bce16791e1ac4954dc4d17b180a12b52ab3577833cb3c673aa7
[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" "384120c41a5d6bce16791e1ac4954dc4d17b180a12b52ab3577833cb3c673aa7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking abortable_parser v0.2.3
[INFO] [stderr]     Checking xml-rs v0.8.3
[INFO] [stderr]     Checking simple-error v0.2.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]    Compiling ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking rustyline v8.0.0
[INFO] [stderr]  Documenting ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.85s
[INFO] running `Command { std: "docker" "inspect" "384120c41a5d6bce16791e1ac4954dc4d17b180a12b52ab3577833cb3c673aa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "384120c41a5d6bce16791e1ac4954dc4d17b180a12b52ab3577833cb3c673aa7", kill_on_drop: false }`
[INFO] [stdout] 384120c41a5d6bce16791e1ac4954dc4d17b180a12b52ab3577833cb3c673aa7