[INFO] cloning repository https://github.com/NotBad4U/Kaleidoscope-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NotBad4U/Kaleidoscope-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNotBad4U%2FKaleidoscope-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNotBad4U%2FKaleidoscope-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b23eb9a04c051140241446e8d0a269345d3dde0
[INFO] documenting NotBad4U/Kaleidoscope-rs against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNotBad4U%2FKaleidoscope-rs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NotBad4U/Kaleidoscope-rs 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 git repo https://github.com/NotBad4U/Kaleidoscope-rs
[INFO] finished tweaking git repo https://github.com/NotBad4U/Kaleidoscope-rs
[INFO] tweaked toml for git repo https://github.com/NotBad4U/Kaleidoscope-rs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/NotBad4U/Kaleidoscope-rs 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 git repository `https://github.com/clap-rs/clap/`
[INFO] [stderr]     Updating git repository `https://github.com/TheDan64/inkwell`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid v0.4.0
[INFO] [stderr]   Downloaded redfa v0.0.2
[INFO] [stderr]   Downloaded llvm-sys v90.0.0
[INFO] [stderr]   Downloaded lalr v0.0.2
[INFO] [stderr]   Downloaded plex v0.2.5
[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] 5b0acdf03a865a60292824d394961030bd007e2bfdc15b90ecd91637ba8a411b
[INFO] running `Command { std: "docker" "start" "-a" "5b0acdf03a865a60292824d394961030bd007e2bfdc15b90ecd91637ba8a411b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b0acdf03a865a60292824d394961030bd007e2bfdc15b90ecd91637ba8a411b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b0acdf03a865a60292824d394961030bd007e2bfdc15b90ecd91637ba8a411b", kill_on_drop: false }`
[INFO] [stdout] 5b0acdf03a865a60292824d394961030bd007e2bfdc15b90ecd91637ba8a411b
[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] c5ea834d1832b9966a0fe00cb2f6eabe4950db23c3a30cb5ddbca5fe23351769
[INFO] running `Command { std: "docker" "start" "-a" "c5ea834d1832b9966a0fe00cb2f6eabe4950db23c3a30cb5ddbca5fe23351769", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking smallvec v1.3.0
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?branch=llvm9-0#5a7c94b2)
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling redfa v0.0.2
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]     Checking strsim v0.9.3
[INFO] [stderr]    Compiling lalr v0.0.2
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking parking_lot_core v0.7.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking uuid v0.4.0
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling llvm-sys v90.0.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.1 (https://github.com/clap-rs/clap/#e1d83a78)
[INFO] [stderr]    Compiling inkwell_internals v0.1.0 (https://github.com/TheDan64/inkwell?branch=llvm9-0#5a7c94b2)
[INFO] [stderr]    Compiling plex v0.2.5
[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/plex-0.2.5/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/plex-0.2.5/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(proc_macro_span)]
[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 compile `plex` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c5ea834d1832b9966a0fe00cb2f6eabe4950db23c3a30cb5ddbca5fe23351769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5ea834d1832b9966a0fe00cb2f6eabe4950db23c3a30cb5ddbca5fe23351769", kill_on_drop: false }`
[INFO] [stdout] c5ea834d1832b9966a0fe00cb2f6eabe4950db23c3a30cb5ddbca5fe23351769
