[INFO] cloning repository https://github.com/queuedq/exact-cover-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/queuedq/exact-cover-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqueuedq%2Fexact-cover-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqueuedq%2Fexact-cover-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 44bfc3e27da828d899b5e542b71aa5ffbeb4f1ee
[INFO] documenting queuedq/exact-cover-rs against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqueuedq%2Fexact-cover-rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/queuedq/exact-cover-rs
[INFO] finished tweaking git repo https://github.com/queuedq/exact-cover-rs
[INFO] tweaked toml for git repo https://github.com/queuedq/exact-cover-rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/queuedq/exact-cover-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] crate git repo https://github.com/queuedq/exact-cover-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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-sink v0.3.18
[INFO] [stderr]   Downloaded futures-task v0.3.18
[INFO] [stderr]   Downloaded futures-macro v0.3.18
[INFO] [stderr]   Downloaded futures-io v0.3.18
[INFO] [stderr]   Downloaded futures-util v0.3.18
[INFO] [stderr]   Downloaded futures-executor v0.3.18
[INFO] [stderr]   Downloaded futures-channel v0.3.18
[INFO] [stderr]   Downloaded futures-core v0.3.18
[INFO] [stderr]   Downloaded futures v0.3.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 7d83daf444ab9572ee7fc85b05d2f4ef09638fab0a139204fbcfcc08afc4df36
[INFO] running `Command { std: "docker" "start" "-a" "7d83daf444ab9572ee7fc85b05d2f4ef09638fab0a139204fbcfcc08afc4df36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d83daf444ab9572ee7fc85b05d2f4ef09638fab0a139204fbcfcc08afc4df36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d83daf444ab9572ee7fc85b05d2f4ef09638fab0a139204fbcfcc08afc4df36", kill_on_drop: false }`
[INFO] [stdout] 7d83daf444ab9572ee7fc85b05d2f4ef09638fab0a139204fbcfcc08afc4df36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4746e048366c472c5d90f775246e9e30681a6008fe34caa17df2d1bf59ad7e3e
[INFO] running `Command { std: "docker" "start" "-a" "4746e048366c472c5d90f775246e9e30681a6008fe34caa17df2d1bf59ad7e3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.18
[INFO] [stderr]    Compiling futures-task v0.3.18
[INFO] [stderr]    Compiling futures-channel v0.3.18
[INFO] [stderr]     Checking futures-sink v0.3.18
[INFO] [stderr]    Compiling futures-util v0.3.18
[INFO] [stderr]     Checking futures-io v0.3.18
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.18
[INFO] [stderr]     Checking futures-executor v0.3.18
[INFO] [stderr]     Checking futures v0.3.18
[INFO] [stderr]  Documenting exact-cover v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `iterative_solve`
[INFO] [stdout]    --> src/dlx/dlx.rs:103:58
[INFO] [stdout]     |
[INFO] [stdout] 103 |     /// It functions as a reference implementation for [`iterative_solve`].
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^ no item named `iterative_solve` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout]     = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `iterative_solve`
[INFO] [stdout]    --> src/dlx/dlx_m.rs:125:58
[INFO] [stdout]     |
[INFO] [stdout] 125 |     /// It functions as a reference implementation for [`iterative_solve`].
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^ no item named `iterative_solve` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.87s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/exact_cover/index.html
[INFO] running `Command { std: "docker" "inspect" "4746e048366c472c5d90f775246e9e30681a6008fe34caa17df2d1bf59ad7e3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4746e048366c472c5d90f775246e9e30681a6008fe34caa17df2d1bf59ad7e3e", kill_on_drop: false }`
[INFO] [stdout] 4746e048366c472c5d90f775246e9e30681a6008fe34caa17df2d1bf59ad7e3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d38b1d13ae8d55f18c989d480e58983a2dc5da66f12a3503d00f4f19548f7b17
[INFO] running `Command { std: "docker" "start" "-a" "d38b1d13ae8d55f18c989d480e58983a2dc5da66f12a3503d00f4f19548f7b17", kill_on_drop: false }`
[INFO] [stderr]  Documenting exact-cover v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.83s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/exact_cover/index.html
[INFO] running `Command { std: "docker" "inspect" "d38b1d13ae8d55f18c989d480e58983a2dc5da66f12a3503d00f4f19548f7b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d38b1d13ae8d55f18c989d480e58983a2dc5da66f12a3503d00f4f19548f7b17", kill_on_drop: false }`
[INFO] [stdout] d38b1d13ae8d55f18c989d480e58983a2dc5da66f12a3503d00f4f19548f7b17