[INFO] crate kurobako 0.0.16 is already in cache
[INFO] checking kurobako-0.0.16 against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] extracting crate kurobako 0.0.16 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate kurobako 0.0.16 on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate kurobako 0.0.16
[INFO] finished tweaking crates.io crate kurobako 0.0.16
[INFO] tweaked toml for crates.io crate kurobako 0.0.16 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate kurobako 0.0.16 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7cfa6dc0e377ad4d21c063d1ed0f6300c7bb4e7e719569a0d2ccdf34c1e795e1
[INFO] running `"docker" "start" "-a" "7cfa6dc0e377ad4d21c063d1ed0f6300c7bb4e7e719569a0d2ccdf34c1e795e1"`
[INFO] [stderr]    Compiling trackable_derive v0.1.2
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]    Compiling structopt-derive v0.3.2
[INFO] [stderr]     Checking ndarray v0.12.1
[INFO] [stderr]     Checking env_logger v0.7.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking rustats v0.0.10
[INFO] [stderr]     Checking bytecodec v0.4.11
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr] error[E0277]: the trait bound `(): std::error::Error` is not satisfied
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustats-0.0.10/src/error.rs:21:24
[INFO] [stderr]    |
[INFO] [stderr] 21 |         ErrorKind::Bug.cause(f).into()
[INFO] [stderr]    |                        ^^^^^ the trait `std::error::Error` is not implemented for `()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: required because of the requirements on the impl of `std::convert::From<()>` for `std::boxed::Box<(dyn std::error::Error + std::marker::Send + std::marker::Sync + 'static)>`
[INFO] [stderr]    = note: required because of the requirements on the impl of `std::convert::Into<std::boxed::Box<(dyn std::error::Error + std::marker::Send + std::marker::Sync + 'static)>>` for `()`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `rustats`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "7cfa6dc0e377ad4d21c063d1ed0f6300c7bb4e7e719569a0d2ccdf34c1e795e1"`
[INFO] running `"docker" "rm" "-f" "7cfa6dc0e377ad4d21c063d1ed0f6300c7bb4e7e719569a0d2ccdf34c1e795e1"`
[INFO] [stdout] 7cfa6dc0e377ad4d21c063d1ed0f6300c7bb4e7e719569a0d2ccdf34c1e795e1