[INFO] fetching crate mimir 0.3.5...
[INFO] documenting mimir-0.3.5 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate mimir 0.3.5 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate mimir 0.3.5 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 mimir 0.3.5
[INFO] finished tweaking crates.io crate mimir 0.3.5
[INFO] tweaked toml for crates.io crate mimir 0.3.5 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 75688170a67417766f70629c58e99aaee5eecaa9e4f4568f716a65967e7ef684
[INFO] running `Command { std: "docker" "start" "-a" "75688170a67417766f70629c58e99aaee5eecaa9e4f4568f716a65967e7ef684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75688170a67417766f70629c58e99aaee5eecaa9e4f4568f716a65967e7ef684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75688170a67417766f70629c58e99aaee5eecaa9e4f4568f716a65967e7ef684", kill_on_drop: false }`
[INFO] [stdout] 75688170a67417766f70629c58e99aaee5eecaa9e4f4568f716a65967e7ef684
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 74646a295e855b5778e5aacc57c5bd5102c34856d51dd2bf6c5e3e2c67061b8e
[INFO] running `Command { std: "docker" "start" "-a" "74646a295e855b5778e5aacc57c5bd5102c34856d51dd2bf6c5e3e2c67061b8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking hex-slice v0.1.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]    Compiling mimir v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stdout] warning: use of deprecated struct `gcc::Build`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]   --> build.rs:14:26
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut build = gcc::Build::new();
[INFO] [stdout]    |                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `gcc::Build::new`: crate has been renamed to `cc`, the `gcc` name is not maintained
[INFO] [stdout]   --> build.rs:14:33
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut build = gcc::Build::new();
[INFO] [stdout]    |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking slog-try v0.2.0
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling darling_core v0.14.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling getset v0.1.2
[INFO] [stderr]    Compiling darling_macro v0.14.1
[INFO] [stderr]    Compiling darling v0.14.1
[INFO] [stderr]    Compiling derive_builder_core v0.11.2
[INFO] [stderr]    Compiling derive_builder_macro v0.11.2
[INFO] [stderr]     Checking derive_builder v0.11.2
[INFO] [stderr]  Documenting mimir v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(ptr_internals, try_from, untagged_unions)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 `mimir`
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name mimir src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="slog"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=eee6080a8326e7dc -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-ecc005b997a67d3e.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-74790291684e43f9.rmeta --extern derive_builder=/opt/rustwide/target/debug/deps/libderive_builder-8ed8b5ead5dff62e.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-23f75e5af1d3679c.rmeta --extern getset=/opt/rustwide/target/debug/deps/libgetset-fcfd969daba209d4.so --extern hex_slice=/opt/rustwide/target/debug/deps/libhex_slice-16b94184d59e6a70.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-4f08b60276848c1e.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2d27c8d9e3cc560d.rmeta --extern slog=/opt/rustwide/target/debug/deps/libslog-3c33bc7a533a96d2.rmeta --extern slog_try=/opt/rustwide/target/debug/deps/libslog_try-fe4dd271c9c66999.rmeta --cap-lints=warn --crate-version 0.3.5` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "74646a295e855b5778e5aacc57c5bd5102c34856d51dd2bf6c5e3e2c67061b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74646a295e855b5778e5aacc57c5bd5102c34856d51dd2bf6c5e3e2c67061b8e", kill_on_drop: false }`
[INFO] [stdout] 74646a295e855b5778e5aacc57c5bd5102c34856d51dd2bf6c5e3e2c67061b8e