[INFO] fetching crate c-scape 0.15.31...
[INFO] documenting c-scape-0.15.31 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate c-scape 0.15.31 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate c-scape 0.15.31 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate c-scape 0.15.31
[INFO] finished tweaking crates.io crate c-scape 0.15.31
[INFO] tweaked toml for crates.io crate c-scape 0.15.31 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustix-openpty v0.1.1
[INFO] [stderr]   Downloaded cstr_core v0.2.6
[INFO] [stderr]   Downloaded rand_pcg v0.3.1
[INFO] [stderr]   Downloaded rustc-std-workspace-alloc v1.0.0
[INFO] [stderr]   Downloaded rustc-std-workspace-core v1.0.0
[INFO] [stderr]   Downloaded rustix-futex-sync v0.1.5
[INFO] [stderr]   Downloaded atomic-dbg v0.1.9
[INFO] [stderr]   Downloaded printf-compat v0.1.1
[INFO] [stderr]   Downloaded io-lifetimes v2.0.3
[INFO] [stderr]   Downloaded rustix-futex-sync v0.2.1
[INFO] [stderr]   Downloaded compiler_builtins v0.1.108
[INFO] [stderr]   Downloaded rustix-dlmalloc v0.1.4
[INFO] [stderr]   Downloaded realpath-ext v0.1.3
[INFO] [stderr]   Downloaded unwinding v0.2.1
[INFO] [stderr]   Downloaded origin v0.15.2
[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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fda9d7a23d9bddbda1c61ecc33875daea49ec47167e51bdfbcef980900b320d
[INFO] running `Command { std: "docker" "start" "-a" "0fda9d7a23d9bddbda1c61ecc33875daea49ec47167e51bdfbcef980900b320d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fda9d7a23d9bddbda1c61ecc33875daea49ec47167e51bdfbcef980900b320d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fda9d7a23d9bddbda1c61ecc33875daea49ec47167e51bdfbcef980900b320d", kill_on_drop: false }`
[INFO] [stdout] 0fda9d7a23d9bddbda1c61ecc33875daea49ec47167e51bdfbcef980900b320d
[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" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48d650ea383542396d52960ceb03f75195759f19431be39b8bdfc7a4cf5927f6
[INFO] running `Command { std: "docker" "start" "-a" "48d650ea383542396d52960ceb03f75195759f19431be39b8bdfc7a4cf5927f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking errno v0.3.8
[INFO] [stderr]     Checking smallvec v1.13.1
[INFO] [stderr]    Compiling c-scape v0.15.31 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking realpath-ext v0.1.3
[INFO] [stderr]     Checking cstr_core v0.2.6
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking printf-compat v0.1.1
[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/printf-compat-0.1.1/src/lib.rs:116:1
[INFO] [stdout]     |
[INFO] [stdout] 116 | #![feature(c_variadic)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `printf-compat` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "48d650ea383542396d52960ceb03f75195759f19431be39b8bdfc7a4cf5927f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48d650ea383542396d52960ceb03f75195759f19431be39b8bdfc7a4cf5927f6", kill_on_drop: false }`
[INFO] [stdout] 48d650ea383542396d52960ceb03f75195759f19431be39b8bdfc7a4cf5927f6
