[INFO] fetching crate metron 0.0.1...
[INFO] checking metron-0.0.1 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate metron 0.0.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate metron 0.0.1 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded metron_library v0.0.1
[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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad63a2c8e309e9215d8a5437009ae34a1434c6d1e51c4338b0a10bf6919fe110
[INFO] running `Command { std: "docker" "start" "-a" "ad63a2c8e309e9215d8a5437009ae34a1434c6d1e51c4338b0a10bf6919fe110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad63a2c8e309e9215d8a5437009ae34a1434c6d1e51c4338b0a10bf6919fe110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad63a2c8e309e9215d8a5437009ae34a1434c6d1e51c4338b0a10bf6919fe110", kill_on_drop: false }`
[INFO] [stdout] ad63a2c8e309e9215d8a5437009ae34a1434c6d1e51c4338b0a10bf6919fe110
[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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d64f461d7b894ef5cab989a3cb7efceeef3db1abc9ffa2ed4c1c4db61dd7e97
[INFO] running `Command { std: "docker" "start" "-a" "7d64f461d7b894ef5cab989a3cb7efceeef3db1abc9ffa2ed4c1c4db61dd7e97", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking metron_core v0.0.1
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking metron_library v0.0.1
[INFO] [stderr]     Checking metron v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.4
[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] error: aborting due to previous error
[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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7d64f461d7b894ef5cab989a3cb7efceeef3db1abc9ffa2ed4c1c4db61dd7e97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d64f461d7b894ef5cab989a3cb7efceeef3db1abc9ffa2ed4c1c4db61dd7e97", kill_on_drop: false }`
[INFO] [stdout] 7d64f461d7b894ef5cab989a3cb7efceeef3db1abc9ffa2ed4c1c4db61dd7e97