[INFO] fetching crate ucg 0.7.2...
[INFO] documenting ucg-0.7.2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate ucg 0.7.2 into /workspace/builds/worker-31/source
[INFO] validating manifest of crates.io crate ucg 0.7.2 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 crates.io crate ucg 0.7.2
[INFO] finished tweaking crates.io crate ucg 0.7.2
[INFO] tweaked toml for crates.io crate ucg 0.7.2 written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate crates.io crate ucg 0.7.2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] [stdout] 095d83be837328c4b1fadf5d2f16b536b3855cef45213af8ef9cc506a3625f07
[INFO] running `Command { std: "docker" "start" "-a" "095d83be837328c4b1fadf5d2f16b536b3855cef45213af8ef9cc506a3625f07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "095d83be837328c4b1fadf5d2f16b536b3855cef45213af8ef9cc506a3625f07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "095d83be837328c4b1fadf5d2f16b536b3855cef45213af8ef9cc506a3625f07", kill_on_drop: false }`
[INFO] [stdout] 095d83be837328c4b1fadf5d2f16b536b3855cef45213af8ef9cc506a3625f07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 9ac3150543a3a47eb86e9e7354dd1b417270844604f05f5689e3971b75e6cd50
[INFO] running `Command { std: "docker" "start" "-a" "9ac3150543a3a47eb86e9e7354dd1b417270844604f05f5689e3971b75e6cd50", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking xml-rs v0.8.0
[INFO] [stderr]     Checking simple-error v0.1.12
[INFO] [stderr]     Checking abortable_parser v0.2.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]    Compiling ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking rustyline v4.1.0
[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 10.03s
[INFO] running `Command { std: "docker" "inspect" "9ac3150543a3a47eb86e9e7354dd1b417270844604f05f5689e3971b75e6cd50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ac3150543a3a47eb86e9e7354dd1b417270844604f05f5689e3971b75e6cd50", kill_on_drop: false }`
[INFO] [stdout] 9ac3150543a3a47eb86e9e7354dd1b417270844604f05f5689e3971b75e6cd50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] cf8f7c80e35f0ff1b0f56106290d81d733124442a82efb6b68ff9457f24cec80
[INFO] running `Command { std: "docker" "start" "-a" "cf8f7c80e35f0ff1b0f56106290d81d733124442a82efb6b68ff9457f24cec80", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking abortable_parser v0.2.3
[INFO] [stderr]     Checking simple-error v0.1.12
[INFO] [stderr]     Checking xml-rs v0.8.0
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]    Compiling ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking rustyline v4.1.0
[INFO] [stderr]  Documenting ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.59s
[INFO] running `Command { std: "docker" "inspect" "cf8f7c80e35f0ff1b0f56106290d81d733124442a82efb6b68ff9457f24cec80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf8f7c80e35f0ff1b0f56106290d81d733124442a82efb6b68ff9457f24cec80", kill_on_drop: false }`
[INFO] [stdout] cf8f7c80e35f0ff1b0f56106290d81d733124442a82efb6b68ff9457f24cec80