[INFO] crate programinduction 0.8.0 is already in cache
[INFO] checking programinduction-0.8.0 against master#e22b61bff0bdd08be7665607cb7be3748c8a35d2 for pr-74627
[INFO] extracting crate programinduction 0.8.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate programinduction 0.8.0 on toolchain e22b61bff0bdd08be7665607cb7be3748c8a35d2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "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-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fd4cc4b91795a140bf73e798fa0853287eab3f53f74e862ec7c9f96e331b673
[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" "5fd4cc4b91795a140bf73e798fa0853287eab3f53f74e862ec7c9f96e331b673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fd4cc4b91795a140bf73e798fa0853287eab3f53f74e862ec7c9f96e331b673", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd4cc4b91795a140bf73e798fa0853287eab3f53f74e862ec7c9f96e331b673", kill_on_drop: false }`
[INFO] [stdout] 5fd4cc4b91795a140bf73e798fa0853287eab3f53f74e862ec7c9f96e331b673
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 805b99d5388a28e1b76dc503a943a4d4d85a51cf89be529694e3c5e1b50a5ab0
[INFO] running `Command { std: "docker" "start" "-a" "805b99d5388a28e1b76dc503a943a4d4d85a51cf89be529694e3c5e1b50a5ab0", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand_os v0.1.3
[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 25.25s
[INFO] running `Command { std: "docker" "inspect" "805b99d5388a28e1b76dc503a943a4d4d85a51cf89be529694e3c5e1b50a5ab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "805b99d5388a28e1b76dc503a943a4d4d85a51cf89be529694e3c5e1b50a5ab0", kill_on_drop: false }`
[INFO] [stdout] 805b99d5388a28e1b76dc503a943a4d4d85a51cf89be529694e3c5e1b50a5ab0