[INFO] cloning repository https://github.com/loiclec/fuzzcheck-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/loiclec/fuzzcheck-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 816f44962aa46dfbbb6dcc35875c3826cf037340
[INFO] documenting loiclec/fuzzcheck-rs against beta-2026-04-21 for beta-1.96-rustdoc-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck-rs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/loiclec/fuzzcheck-rs
[INFO] finished tweaking git repo https://github.com/loiclec/fuzzcheck-rs
[INFO] tweaked toml for git repo https://github.com/loiclec/fuzzcheck-rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck-rs on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 47 packages to latest compatible versions
[INFO] [stderr]       Adding ahash v0.7.8 (available: v0.8.12)
[INFO] [stderr]       Adding bit-vec v0.6.3 (available: v0.9.1)
[INFO] [stderr]       Adding fastrand v1.9.0 (available: v2.4.1)
[INFO] [stderr]       Adding md5 v0.7.0 (available: v0.8.0)
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (available: v0.50.3)
[INFO] [stderr]       Adding object v0.29.0 (available: v0.39.1)
[INFO] [stderr]       Adding regex-syntax v0.6.29 (available: v0.8.10)
[INFO] [stderr]       Adding ron v0.7.1 (available: v0.12.1)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.117)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02737ecf504ae6b48444d5e866bcc601580f5481a4987fe69ef4600350ce99fd
[INFO] running `Command { std: "docker" "start" "-a" "02737ecf504ae6b48444d5e866bcc601580f5481a4987fe69ef4600350ce99fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02737ecf504ae6b48444d5e866bcc601580f5481a4987fe69ef4600350ce99fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02737ecf504ae6b48444d5e866bcc601580f5481a4987fe69ef4600350ce99fd", kill_on_drop: false }`
[INFO] [stdout] 02737ecf504ae6b48444d5e866bcc601580f5481a4987fe69ef4600350ce99fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de78ac36152464c136a49862cffc330fdd0f3d39e8027f4cfd91a1d52a6c1ede
[INFO] running `Command { std: "docker" "start" "-a" "de78ac36152464c136a49862cffc330fdd0f3d39e8027f4cfd91a1d52a6c1ede", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling find-msvc-tools v0.1.9
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling pkg-config v0.3.33
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]     Checking unicode-width v0.2.2
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]     Checking itoa v1.0.18
[INFO] [stderr]    Compiling cc v1.2.61
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]    Compiling cargo-fuzzcheck v0.13.0 (/opt/rustwide/workdir/cargo-fuzzcheck)
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking rustc-demangle v0.1.27
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking getopts v0.2.24
[INFO] [stderr]     Checking object v0.29.0
[INFO] [stderr]     Checking fuzzcheck_common v0.13.0 (/opt/rustwide/workdir/fuzzcheck_common)
[INFO] [stderr]  Documenting fuzzcheck_common v0.13.0 (/opt/rustwide/workdir/fuzzcheck_common)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> fuzzcheck_common/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coverage_attribute)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> fuzzcheck_common/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coverage_attribute)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `fuzzcheck_common`
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fuzzcheck_common` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "de78ac36152464c136a49862cffc330fdd0f3d39e8027f4cfd91a1d52a6c1ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de78ac36152464c136a49862cffc330fdd0f3d39e8027f4cfd91a1d52a6c1ede", kill_on_drop: false }`
[INFO] [stdout] de78ac36152464c136a49862cffc330fdd0f3d39e8027f4cfd91a1d52a6c1ede
