[INFO] fetching crate pantrace 0.2.0...
[INFO] documenting pantrace-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate pantrace 0.2.0 into /workspace/builds/worker-22/source
[INFO] validating manifest of crates.io crate pantrace 0.2.0 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 crates.io crate pantrace 0.2.0
[INFO] finished tweaking crates.io crate pantrace 0.2.0
[INFO] tweaked toml for crates.io crate pantrace 0.2.0 written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate crates.io crate pantrace 0.2.0 already has a lockfile, it will not be regenerated
[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 deku_derive v0.12.5
[INFO] [stderr]   Downloaded deku v0.12.5
[INFO] [stderr]   Downloaded warts v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 8c1e37d1c2cee6be00e56c92b4cb16eacadeda970f7744a4acd06a4da889dcfb
[INFO] running `Command { std: "docker" "start" "-a" "8c1e37d1c2cee6be00e56c92b4cb16eacadeda970f7744a4acd06a4da889dcfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c1e37d1c2cee6be00e56c92b4cb16eacadeda970f7744a4acd06a4da889dcfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c1e37d1c2cee6be00e56c92b4cb16eacadeda970f7744a4acd06a4da889dcfb", kill_on_drop: false }`
[INFO] [stdout] 8c1e37d1c2cee6be00e56c92b4cb16eacadeda970f7744a4acd06a4da889dcfb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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] 9d5f3658771020f99bd54e09706a52f3e316a5854a423dcf391f96d7e6740740
[INFO] running `Command { std: "docker" "start" "-a" "9d5f3658771020f99bd54e09706a52f3e316a5854a423dcf391f96d7e6740740", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v1.2.0
[INFO] [stderr]    Compiling serde_json v1.0.80
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking cpufeatures v0.2.2
[INFO] [stderr]     Checking wyz v0.4.0
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]     Checking bitvec v0.22.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking crypto-common v0.1.3
[INFO] [stderr]     Checking block-buffer v0.10.2
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]     Checking sha2 v0.10.2
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling thiserror v1.0.31
[INFO] [stderr]     Checking clap v3.1.15
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling deku_derive v0.12.5
[INFO] [stderr]     Checking deku v0.12.5
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking warts v0.2.1
[INFO] [stderr]  Documenting pantrace v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ip)]
[INFO] [stdout]   |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(slice_group_by)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `pantrace`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name pantrace src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=2e5856b156248ded -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-f099402360db44ec.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-64cd2a64fd5e9055.rmeta --extern deku=/opt/rustwide/target/debug/deps/libdeku-24b809891a225bd3.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-eee656a5e98a2aca.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-6d4ddd28ee1b0d43.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-9e0f5c8a51d23dc1.rmeta --extern warts=/opt/rustwide/target/debug/deps/libwarts-9b89777d9cacf2e1.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9d5f3658771020f99bd54e09706a52f3e316a5854a423dcf391f96d7e6740740", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d5f3658771020f99bd54e09706a52f3e316a5854a423dcf391f96d7e6740740", kill_on_drop: false }`
[INFO] [stdout] 9d5f3658771020f99bd54e09706a52f3e316a5854a423dcf391f96d7e6740740