[INFO] fetching crate instant-segment 0.8.2...
[INFO] checking instant-segment-0.8.2 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate instant-segment 0.8.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate instant-segment 0.8.2 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 instant-segment 0.8.2
[INFO] finished tweaking crates.io crate instant-segment 0.8.2
[INFO] tweaked toml for crates.io crate instant-segment 0.8.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate instant-segment 0.8.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bencher v0.1.5
[INFO] [stderr]   Downloaded smartstring v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 6dd7e838804a37df947e9304442614dfb8ad38eb830dbbcd645769bc4423d1db
[INFO] running `Command { std: "docker" "start" "-a" "6dd7e838804a37df947e9304442614dfb8ad38eb830dbbcd645769bc4423d1db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dd7e838804a37df947e9304442614dfb8ad38eb830dbbcd645769bc4423d1db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dd7e838804a37df947e9304442614dfb8ad38eb830dbbcd645769bc4423d1db", kill_on_drop: false }`
[INFO] [stdout] 6dd7e838804a37df947e9304442614dfb8ad38eb830dbbcd645769bc4423d1db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 743430f7e4561df92ddcf5042d1bc5043abde5b378769a384e1bcb66e7cfdeb5
[INFO] running `Command { std: "docker" "start" "-a" "743430f7e4561df92ddcf5042d1bc5043abde5b378769a384e1bcb66e7cfdeb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking smartstring v0.2.6
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking instant-segment v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `instant-segment` due to 2 previous errors
[INFO] [stdout] error[E0601]: `main` function not found in crate `bench`
[INFO] [stdout]   --> benches/bench.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / #![cfg(feature = "__test_data")]
[INFO] [stdout] 2  | |
[INFO] [stdout] 3  | | use bencher::{benchmark_group, benchmark_main, Bencher};
[INFO] [stdout] 4  | |
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | |     });
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `benches/bench.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "743430f7e4561df92ddcf5042d1bc5043abde5b378769a384e1bcb66e7cfdeb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "743430f7e4561df92ddcf5042d1bc5043abde5b378769a384e1bcb66e7cfdeb5", kill_on_drop: false }`
[INFO] [stdout] 743430f7e4561df92ddcf5042d1bc5043abde5b378769a384e1bcb66e7cfdeb5