[INFO] cloning repository https://github.com/AZMCode/rpncalc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AZMCode/rpncalc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAZMCode%2Frpncalc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAZMCode%2Frpncalc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da603cff8aabfcf71a5e18c1cddb4ed87f78018f
[INFO] documenting AZMCode/rpncalc 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%2FAZMCode%2Frpncalc" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AZMCode/rpncalc 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/AZMCode/rpncalc
[INFO] finished tweaking git repo https://github.com/AZMCode/rpncalc
[INFO] tweaked toml for git repo https://github.com/AZMCode/rpncalc written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AZMCode/rpncalc 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 terminfo v0.7.3
[INFO] [stderr]   Downloaded nix v0.24.1
[INFO] [stderr]   Downloaded clearscreen v1.0.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f4f2fa6002280b95b7df614ae2beb5e4fc7fdfaffd2a4d0daee3c79a4d15a84e
[INFO] running `Command { std: "docker" "start" "-a" "f4f2fa6002280b95b7df614ae2beb5e4fc7fdfaffd2a4d0daee3c79a4d15a84e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4f2fa6002280b95b7df614ae2beb5e4fc7fdfaffd2a4d0daee3c79a4d15a84e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4f2fa6002280b95b7df614ae2beb5e4fc7fdfaffd2a4d0daee3c79a4d15a84e", kill_on_drop: false }`
[INFO] [stdout] f4f2fa6002280b95b7df614ae2beb5e4fc7fdfaffd2a4d0daee3c79a4d15a84e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b68342e1fa8db61babeee23f065e82b67182c67f1f355ae7892172b7228f9f78
[INFO] running `Command { std: "docker" "start" "-a" "b68342e1fa8db61babeee23f065e82b67182c67f1f355ae7892172b7228f9f78", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking clap_lex v0.2.3
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling clap_derive v3.2.6
[INFO] [stderr]    Compiling rpncalc-macros v0.1.0 (/opt/rustwide/workdir/deps/macros)
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking clap v3.2.6
[INFO] [stderr]  Documenting rpncalc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(macro_metavar_expr)]
[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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(iter_intersperse)]
[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 `rpncalc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name rpncalc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=17c22722a0c3cb34 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-36d5b36da9e5ebe1.rmeta --extern rpncalc_macros=/opt/rustwide/target/debug/deps/librpncalc_macros-53ca8d3397202f6f.so --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-772e4c917af216a1.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b68342e1fa8db61babeee23f065e82b67182c67f1f355ae7892172b7228f9f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b68342e1fa8db61babeee23f065e82b67182c67f1f355ae7892172b7228f9f78", kill_on_drop: false }`
[INFO] [stdout] b68342e1fa8db61babeee23f065e82b67182c67f1f355ae7892172b7228f9f78
