[INFO] cloning repository https://github.com/porglezomp-misc/flapjack-fwop-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/porglezomp-misc/flapjack-fwop-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fporglezomp-misc%2Fflapjack-fwop-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fporglezomp-misc%2Fflapjack-fwop-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 01fe0aa72721958a406f7475f1afcba0c21feb7d
[INFO] documenting porglezomp-misc/flapjack-fwop-solver against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fporglezomp-misc%2Fflapjack-fwop-solver" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/porglezomp-misc/flapjack-fwop-solver on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/porglezomp-misc/flapjack-fwop-solver
[INFO] disabled cargo feature 'default-run' from git repo https://github.com/porglezomp-misc/flapjack-fwop-solver
[INFO] finished tweaking git repo https://github.com/porglezomp-misc/flapjack-fwop-solver
[INFO] tweaked toml for git repo https://github.com/porglezomp-misc/flapjack-fwop-solver written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/porglezomp-misc/flapjack-fwop-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wait-timeout v0.1.5
[INFO] [stderr]   Downloaded failure v0.1.4
[INFO] [stderr]   Downloaded failure_derive v0.1.4
[INFO] [stderr]   Downloaded redox_syscall v0.1.49
[INFO] [stderr]   Downloaded criterion-plot v0.2.7
[INFO] [stderr]   Downloaded serde_derive v1.0.83
[INFO] [stderr]   Downloaded serde v1.0.83
[INFO] [stderr]   Downloaded criterion v0.2.7
[INFO] [stderr]   Downloaded handlebars v1.0.5
[INFO] [stderr]   Downloaded rusty-fork v0.2.1
[INFO] [stderr]   Downloaded proptest v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6a18e5e55c49ce104e41f6d036dba06e5dc3de5e97b4798360fe8efc988e4017
[INFO] running `Command { std: "docker" "start" "-a" "6a18e5e55c49ce104e41f6d036dba06e5dc3de5e97b4798360fe8efc988e4017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a18e5e55c49ce104e41f6d036dba06e5dc3de5e97b4798360fe8efc988e4017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a18e5e55c49ce104e41f6d036dba06e5dc3de5e97b4798360fe8efc988e4017", kill_on_drop: false }`
[INFO] [stdout] 6a18e5e55c49ce104e41f6d036dba06e5dc3de5e97b4798360fe8efc988e4017
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb45b9606c3b55a3ba5f3656bbe9c0c36fba2f778c348fb800086cb0334aedf6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bb45b9606c3b55a3ba5f3656bbe9c0c36fba2f778c348fb800086cb0334aedf6", kill_on_drop: false }`
[INFO] [stderr]  Documenting fwop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking fwop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/solve.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(duration_float)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 document `fwop`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name solve src/bin/solve.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0be27dd5822999e3 -L dependency=/opt/rustwide/target/debug/deps --extern fwop=/opt/rustwide/target/debug/deps/libfwop-19f202e76e09b207.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "bb45b9606c3b55a3ba5f3656bbe9c0c36fba2f778c348fb800086cb0334aedf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb45b9606c3b55a3ba5f3656bbe9c0c36fba2f778c348fb800086cb0334aedf6", kill_on_drop: false }`
[INFO] [stdout] bb45b9606c3b55a3ba5f3656bbe9c0c36fba2f778c348fb800086cb0334aedf6