[INFO] fetching crate metron 0.0.1...
[INFO] checking metron-0.0.1 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate metron 0.0.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate metron 0.0.1 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metron 0.0.1
[INFO] finished tweaking crates.io crate metron 0.0.1
[INFO] tweaked toml for crates.io crate metron 0.0.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 72 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.5.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded metron_library v0.0.1
[INFO] [stderr]   Downloaded metron_core v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 703d0b5ffb00ebd1695a40ab96666fd31b8f5bab488766b15438d08d2d5ffe76
[INFO] running `Command { std: "docker" "start" "-a" "703d0b5ffb00ebd1695a40ab96666fd31b8f5bab488766b15438d08d2d5ffe76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "703d0b5ffb00ebd1695a40ab96666fd31b8f5bab488766b15438d08d2d5ffe76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "703d0b5ffb00ebd1695a40ab96666fd31b8f5bab488766b15438d08d2d5ffe76", kill_on_drop: false }`
[INFO] [stdout] 703d0b5ffb00ebd1695a40ab96666fd31b8f5bab488766b15438d08d2d5ffe76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a60614bac7fff95c6f6450c99a54c3eb34a5506740575d57a6aefd180141c715
[INFO] running `Command { std: "docker" "start" "-a" "a60614bac7fff95c6f6450c99a54c3eb34a5506740575d57a6aefd180141c715", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.89
[INFO] [stderr]     Checking metron_core v0.0.1
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking metron_library v0.0.1
[INFO] [stderr]     Checking csv v1.3.1
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking metron v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] error[E0601]: `main` function not found in crate `my_benchmark`
[INFO] [stdout]   --> benches/my_benchmark.rs:30:30
[INFO] [stdout]    |
[INFO] [stdout] 30 | // criterion_main!(benches);
[INFO] [stdout]    |                             ^ consider adding a `main` function to `benches/my_benchmark.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `metron` (bench "my_benchmark") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a60614bac7fff95c6f6450c99a54c3eb34a5506740575d57a6aefd180141c715", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a60614bac7fff95c6f6450c99a54c3eb34a5506740575d57a6aefd180141c715", kill_on_drop: false }`
[INFO] [stdout] a60614bac7fff95c6f6450c99a54c3eb34a5506740575d57a6aefd180141c715