[INFO] fetching crate micro-hnsw-wasm 2.3.0...
[INFO] testing micro-hnsw-wasm-2.3.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate micro-hnsw-wasm 2.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate micro-hnsw-wasm 2.3.0
[INFO] finished tweaking crates.io crate micro-hnsw-wasm 2.3.0
[INFO] tweaked toml for crates.io crate micro-hnsw-wasm 2.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate micro-hnsw-wasm 2.3.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate micro-hnsw-wasm 2.3.0 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 485e6cffb806f423061979390b2e24af90935936e63a8aedde58984610720f15
[INFO] running `Command { std: "docker" "start" "-a" "485e6cffb806f423061979390b2e24af90935936e63a8aedde58984610720f15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "485e6cffb806f423061979390b2e24af90935936e63a8aedde58984610720f15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "485e6cffb806f423061979390b2e24af90935936e63a8aedde58984610720f15", kill_on_drop: false }`
[INFO] [stdout] 485e6cffb806f423061979390b2e24af90935936e63a8aedde58984610720f15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd8c8711b3e702bcfbcbb2668cbf5e34be83e7d6d66ecc7a41326c0e9fc3f779
[INFO] running `Command { std: "docker" "start" "-a" "dd8c8711b3e702bcfbcbb2668cbf5e34be83e7d6d66ecc7a41326c0e9fc3f779", kill_on_drop: false }`
[INFO] [stderr]    Compiling micro-hnsw-wasm v2.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `beam_d` is never read
[INFO] [stdout]    --> src/lib.rs:356:24
[INFO] [stdout]     |
[INFO] [stdout] 356 |             beam = nb; beam_d = nd; bs = ns;
[INFO] [stdout]     |                        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `micro-hnsw-wasm` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "dd8c8711b3e702bcfbcbb2668cbf5e34be83e7d6d66ecc7a41326c0e9fc3f779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd8c8711b3e702bcfbcbb2668cbf5e34be83e7d6d66ecc7a41326c0e9fc3f779", kill_on_drop: false }`
[INFO] [stdout] dd8c8711b3e702bcfbcbb2668cbf5e34be83e7d6d66ecc7a41326c0e9fc3f779