Dec 02 03:23:14.963 INFO documenting rustc-ap-syntax-297.0.0 against try#f86f76f89ea2b1ccbfb3741962ec2029d878a389 for pr-55318-1
Dec 02 03:23:14.963 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318-1/worker-2/try#f86f76f89ea2b1ccbfb3741962ec2029d878a389:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55318-1/try#f86f76f89ea2b1ccbfb3741962ec2029d878a389:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +f86f76f89ea2b1ccbfb3741962ec2029d878a389-alt doc --frozen --no-deps --document-private-items" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 03:23:15.359 INFO [stdout] 8364c6c09cdff34d174f1734239c4dfe2095f8cd19efb874dd194e50cfe94dad
Dec 02 03:23:15.365 INFO running `"docker" "start" "-a" "8364c6c09cdff34d174f1734239c4dfe2095f8cd19efb874dd194e50cfe94dad"`
Dec 02 03:23:16.512 INFO [stderr] usermod: no changes
Dec 02 03:23:16.788 INFO [stderr]    Compiling rustc-ap-syntax v297.0.0 (/source)
Dec 02 03:23:16.788 INFO [stderr]     Checking ena v0.9.3
Dec 02 03:23:16.788 INFO [stderr]     Checking rustc-ap-rustc_cratesio_shim v297.0.0
Dec 02 03:23:16.788 INFO [stderr]     Checking smallvec v0.6.7
Dec 02 03:23:16.788 INFO [stderr]     Checking lock_api v0.1.5
Dec 02 03:23:16.788 INFO [stderr]     Checking rustc-rayon-core v0.1.1
Dec 02 03:23:19.346 INFO [stderr]     Checking parking_lot_core v0.3.1
Dec 02 03:23:19.348 INFO [stderr]     Checking rustc-ap-serialize v297.0.0
Dec 02 03:23:19.350 INFO [stderr]     Checking parking_lot_core v0.2.14
Dec 02 03:23:21.634 INFO [stderr]     Checking rustc-rayon v0.1.1
Dec 02 03:23:21.674 INFO [stderr]     Checking parking_lot v0.6.4
Dec 02 03:23:26.334 INFO [stderr]     Checking rustc-ap-rustc_data_structures v297.0.0
Dec 02 03:23:30.272 INFO [stderr]     Checking rustc-ap-arena v297.0.0
Dec 02 03:23:30.272 INFO [stderr]     Checking rustc-ap-rustc_target v297.0.0
Dec 02 03:23:32.647 INFO [stderr]     Checking rustc-ap-syntax_pos v297.0.0
Dec 02 03:23:36.958 INFO [stderr]     Checking rustc-ap-rustc_errors v297.0.0
Dec 02 03:23:39.993 INFO [stderr]  Documenting rustc-ap-syntax v297.0.0 (/source)
Dec 02 03:23:47.308 INFO [stderr] warning: `[stable]` cannot be resolved, ignoring it...
Dec 02 03:23:47.308 INFO [stderr]    --> attr/builtin.rs:121:22
Dec 02 03:23:47.308 INFO [stderr]     |
Dec 02 03:23:47.308 INFO [stderr] 121 | /// Represents the #[stable], #[unstable], #[rustc_{deprecated,const_unstable}] attributes.
Dec 02 03:23:47.308 INFO [stderr]     |                      ^^^^^^ cannot be resolved, ignoring
Dec 02 03:23:47.308 INFO [stderr]     |
Dec 02 03:23:47.308 INFO [stderr]     = note: #[warn(intra_doc_link_resolution_failure)] on by default
Dec 02 03:23:47.308 INFO [stderr]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.308 INFO [stderr] 
Dec 02 03:23:47.308 INFO [stderr] warning: `[unstable]` cannot be resolved, ignoring it...
Dec 02 03:23:47.309 INFO [stderr]    --> attr/builtin.rs:121:33
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr] 121 | /// Represents the #[stable], #[unstable], #[rustc_{deprecated,const_unstable}] attributes.
Dec 02 03:23:47.309 INFO [stderr]     |                                 ^^^^^^^^ cannot be resolved, ignoring
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.309 INFO [stderr] 
Dec 02 03:23:47.309 INFO [stderr] warning: `[stable]` cannot be resolved, ignoring it...
Dec 02 03:23:47.309 INFO [stderr]    --> attr/builtin.rs:121:22
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr] 121 | /// Represents the #[stable], #[unstable], #[rustc_{deprecated,const_unstable}] attributes.
Dec 02 03:23:47.309 INFO [stderr]     |                      ^^^^^^ cannot be resolved, ignoring
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.309 INFO [stderr] 
Dec 02 03:23:47.309 INFO [stderr] warning: `[unstable]` cannot be resolved, ignoring it...
Dec 02 03:23:47.309 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-syntax_pos-297.0.0/hygiene.rs:557:47
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr] 557 |     /// Whether the macro is allowed to use #[unstable]/feature-gated
Dec 02 03:23:47.309 INFO [stderr]     |                                               ^^^^^^^^ cannot be resolved, ignoring
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.309 INFO [stderr] 
Dec 02 03:23:47.309 INFO [stderr] warning: `[cfgspec]` cannot be resolved, ignoring it...
Dec 02 03:23:47.309 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-syntax_pos-297.0.0/lib.rs:100:36
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr] 100 |     /// Strings provided as --cfg [cfgspec] stored in a crate_cfg
Dec 02 03:23:47.309 INFO [stderr]     |                                    ^^^^^^^ cannot be resolved, ignoring
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.309 INFO [stderr] 
Dec 02 03:23:47.309 INFO [stderr] warning: `[unstable]` cannot be resolved, ignoring it...
Dec 02 03:23:47.309 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-syntax_pos-297.0.0/lib.rs:343:61
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr] 343 |     /// Check if a span is "internal" to a macro in which #[unstable]
Dec 02 03:23:47.309 INFO [stderr]     |                                                             ^^^^^^^^ cannot be resolved, ignoring
Dec 02 03:23:47.309 INFO [stderr]     |
Dec 02 03:23:47.309 INFO [stderr]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.309 INFO [stderr] 
Dec 02 03:23:47.309 INFO [stderr] warning: `[4]` cannot be resolved, ignoring it...
Dec 02 03:23:47.309 INFO [stderr]     --> parse/parser.rs:2677:33
Dec 02 03:23:47.309 INFO [stderr]      |
Dec 02 03:23:47.309 INFO [stderr] 2677 |     /// parse a.b or a(13) or a[4] or just a
Dec 02 03:23:47.309 INFO [stderr]      |                                 ^ cannot be resolved, ignoring
Dec 02 03:23:47.309 INFO [stderr]      |
Dec 02 03:23:47.309 INFO [stderr]      = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.309 INFO [stderr] 
Dec 02 03:23:47.328 INFO [stderr] warning: `[::]` cannot be resolved, ignoring it...
Dec 02 03:23:47.328 INFO [stderr]     --> parse/parser.rs:7636:21
Dec 02 03:23:47.328 INFO [stderr]      |
Dec 02 03:23:47.328 INFO [stderr] 7636 |     /// USE_TREE = [`::`] `*` |
Dec 02 03:23:47.328 INFO [stderr]      |                     ^^^^ cannot be resolved, ignoring
Dec 02 03:23:47.328 INFO [stderr]      |
Dec 02 03:23:47.328 INFO [stderr]      = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.328 INFO [stderr] 
Dec 02 03:23:47.340 INFO [stderr] warning: `[::]` cannot be resolved, ignoring it...
Dec 02 03:23:47.340 INFO [stderr]     --> parse/parser.rs:7637:21
Dec 02 03:23:47.340 INFO [stderr]      |
Dec 02 03:23:47.340 INFO [stderr] 7637 |     ///            [`::`] `{` USE_TREE_LIST `}` |
Dec 02 03:23:47.340 INFO [stderr]      |                     ^^^^ cannot be resolved, ignoring
Dec 02 03:23:47.340 INFO [stderr]      |
Dec 02 03:23:47.340 INFO [stderr]      = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.340 INFO [stderr] 
Dec 02 03:23:47.340 INFO [stderr] warning: `[foo]` cannot be resolved, ignoring it...
Dec 02 03:23:47.340 INFO [stderr]    --> ext/base.rs:581:32
Dec 02 03:23:47.340 INFO [stderr]     |
Dec 02 03:23:47.340 INFO [stderr] 581 |     /// An attribute macro - #[foo]
Dec 02 03:23:47.340 INFO [stderr]     |                                ^^^ cannot be resolved, ignoring
Dec 02 03:23:47.340 INFO [stderr]     |
Dec 02 03:23:47.340 INFO [stderr]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.340 INFO [stderr] 
Dec 02 03:23:47.356 INFO [stderr] warning: `[chunks]` cannot be resolved, ignoring it...
Dec 02 03:23:47.356 INFO [stderr]     |
Dec 02 03:23:47.356 INFO [stderr]     = note: the link appears in this line:
Dec 02 03:23:47.356 INFO [stderr]             
Dec 02 03:23:47.356 INFO [stderr]              resulting code better than in the case of [`chunks`].
Dec 02 03:23:47.356 INFO [stderr]                                                         ^^^^^^^^
Dec 02 03:23:47.356 INFO [stderr]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.356 INFO [stderr] 
Dec 02 03:23:47.356 INFO [stderr] warning: `[chunks_mut]` cannot be resolved, ignoring it...
Dec 02 03:23:47.356 INFO [stderr]     |
Dec 02 03:23:47.356 INFO [stderr]     = note: the link appears in this line:
Dec 02 03:23:47.356 INFO [stderr]             
Dec 02 03:23:47.356 INFO [stderr]              resulting code better than in the case of [`chunks_mut`].
Dec 02 03:23:47.356 INFO [stderr]                                                         ^^^^^^^^^^^^
Dec 02 03:23:47.356 INFO [stderr]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
Dec 02 03:23:47.356 INFO [stderr] 
Dec 02 03:23:48.439 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.90s
Dec 02 03:23:48.455 INFO [stderr] su: No module specific data is present
Dec 02 03:23:48.974 INFO running `"docker" "inspect" "8364c6c09cdff34d174f1734239c4dfe2095f8cd19efb874dd194e50cfe94dad"`
Dec 02 03:23:49.080 INFO running `"docker" "rm" "-f" "8364c6c09cdff34d174f1734239c4dfe2095f8cd19efb874dd194e50cfe94dad"`
Dec 02 03:23:49.236 INFO [stdout] 8364c6c09cdff34d174f1734239c4dfe2095f8cd19efb874dd194e50cfe94dad