[INFO] fetching crate programinduction 0.8.0...
[INFO] checking programinduction-0.8.0 against beta for pr-78714
[INFO] extracting crate programinduction 0.8.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate programinduction 0.8.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate programinduction 0.8.0
[INFO] finished tweaking crates.io crate programinduction 0.8.0
[INFO] tweaked toml for crates.io crate programinduction 0.8.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66c2c763c3a15bbfd9809e6884d55086b7f7e7fca11b7aee4cdb931eb56083fd
[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" "66c2c763c3a15bbfd9809e6884d55086b7f7e7fca11b7aee4cdb931eb56083fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66c2c763c3a15bbfd9809e6884d55086b7f7e7fca11b7aee4cdb931eb56083fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66c2c763c3a15bbfd9809e6884d55086b7f7e7fca11b7aee4cdb931eb56083fd", kill_on_drop: false }`
[INFO] [stdout] 66c2c763c3a15bbfd9809e6884d55086b7f7e7fca11b7aee4cdb931eb56083fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=forbid" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae7ab87e7facc5bf3c7ea655615149dc0f82d18190f2b1f6c5a12606aa98b582
[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" "ae7ab87e7facc5bf3c7ea655615149dc0f82d18190f2b1f6c5a12606aa98b582", kill_on_drop: false }`
[INFO] [stderr]     Checking polytype v6.1.1
[INFO] [stderr]     Checking term_rewriting v0.5.0
[INFO] [stderr]     Checking programinduction v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> tests/lambda.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     /// an index never makes sense outside of an application or lambda body.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.24s
[INFO] running `Command { std: "docker" "inspect" "ae7ab87e7facc5bf3c7ea655615149dc0f82d18190f2b1f6c5a12606aa98b582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae7ab87e7facc5bf3c7ea655615149dc0f82d18190f2b1f6c5a12606aa98b582", kill_on_drop: false }`
[INFO] [stdout] ae7ab87e7facc5bf3c7ea655615149dc0f82d18190f2b1f6c5a12606aa98b582