[INFO] fetching crate pink-runtime 0.1.1...
[INFO] documenting pink-runtime-0.1.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate pink-runtime 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate pink-runtime 0.1.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pink-runtime 0.1.1
[INFO] finished tweaking crates.io crate pink-runtime 0.1.1
[INFO] tweaked toml for crates.io crate pink-runtime 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate pink-runtime 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex-macro v0.2.0
[INFO] [stderr]   Downloaded termion v2.0.1
[INFO] [stderr]   Downloaded fd-lock v3.0.10
[INFO] [stderr]   Downloaded rustyline v10.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4ffd31146fc73b4cdbf753342deef7668c68010dfb9df3e796410df8b941eba
[INFO] running `Command { std: "docker" "start" "-a" "e4ffd31146fc73b4cdbf753342deef7668c68010dfb9df3e796410df8b941eba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4ffd31146fc73b4cdbf753342deef7668c68010dfb9df3e796410df8b941eba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4ffd31146fc73b4cdbf753342deef7668c68010dfb9df3e796410df8b941eba", kill_on_drop: false }`
[INFO] [stdout] e4ffd31146fc73b4cdbf753342deef7668c68010dfb9df3e796410df8b941eba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e79405674d616b1fcd0742c7b3f1a58e46d67a81b6f5ae25308c259a0c57be0c
[INFO] running `Command { std: "docker" "start" "-a" "e79405674d616b1fcd0742c7b3f1a58e46d67a81b6f5ae25308c259a0c57be0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling io-lifetimes v1.0.5
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling rustix v0.36.8
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking os_str_bytes v6.4.1
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking clap_lex v0.3.1
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking nix v0.25.1
[INFO] [stderr]     Checking termion v2.0.1
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking regex v1.7.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.7.1/src/lib.rs:612:42
[INFO] [stdout]     |
[INFO] [stdout] 612 | #![cfg_attr(feature = "pattern", feature(pattern))]
[INFO] [stdout]     |                                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e79405674d616b1fcd0742c7b3f1a58e46d67a81b6f5ae25308c259a0c57be0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e79405674d616b1fcd0742c7b3f1a58e46d67a81b6f5ae25308c259a0c57be0c", kill_on_drop: false }`
[INFO] [stdout] e79405674d616b1fcd0742c7b3f1a58e46d67a81b6f5ae25308c259a0c57be0c
