[INFO] cloning repository https://github.com/ruchirK/chess-diff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ruchirK/chess-diff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FruchirK%2Fchess-diff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FruchirK%2Fchess-diff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 292f3d3aa7939da6b772ba64d807e399899b6111
[INFO] testing ruchirK/chess-diff against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FruchirK%2Fchess-diff" "/workspace/builds/worker-49/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-49/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ruchirK/chess-diff on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ruchirK/chess-diff
[INFO] finished tweaking git repo https://github.com/ruchirK/chess-diff
[INFO] tweaked toml for git repo https://github.com/ruchirK/chess-diff written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate git repo https://github.com/ruchirK/chess-diff already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e73e3fc3fac90dad7e7e36ec5afb8d2d54c5581518d75a59bf5b7a81922717b0
[INFO] running `Command { std: "docker" "start" "-a" "e73e3fc3fac90dad7e7e36ec5afb8d2d54c5581518d75a59bf5b7a81922717b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e73e3fc3fac90dad7e7e36ec5afb8d2d54c5581518d75a59bf5b7a81922717b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73e3fc3fac90dad7e7e36ec5afb8d2d54c5581518d75a59bf5b7a81922717b0", kill_on_drop: false }`
[INFO] [stdout] e73e3fc3fac90dad7e7e36ec5afb8d2d54c5581518d75a59bf5b7a81922717b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18b11972655c7ca3002af4eb51c9eaeaf1c511d5da6c2066818ac625e7efc94a
[INFO] running `Command { std: "docker" "start" "-a" "18b11972655c7ca3002af4eb51c9eaeaf1c511d5da6c2066818ac625e7efc94a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling timely_bytes v0.11.0 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling shakmaty v0.16.4
[INFO] [stderr]    Compiling abomonation v0.7.3
[INFO] [stderr]    Compiling timely_logging v0.11.1 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling timely_sort v0.1.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling slice-deque v0.3.0
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]    Compiling btoi v0.4.2
[INFO] [stderr]    Compiling pgn-reader v0.15.0 (https://github.com/niklasf/rust-pgn-reader#49dc0b16)
[INFO] [stderr]    Compiling bzip2 v0.4.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]    Compiling timely_communication v0.11.1 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]    Compiling timely v0.11.1 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]    Compiling differential-dataflow v0.11.0 (https://github.com/TimelyDataflow/differential-dataflow#f155b908)
[INFO] [stderr]    Compiling chess-diff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.85s
[INFO] running `Command { std: "docker" "inspect" "18b11972655c7ca3002af4eb51c9eaeaf1c511d5da6c2066818ac625e7efc94a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18b11972655c7ca3002af4eb51c9eaeaf1c511d5da6c2066818ac625e7efc94a", kill_on_drop: false }`
[INFO] [stdout] 18b11972655c7ca3002af4eb51c9eaeaf1c511d5da6c2066818ac625e7efc94a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e6833f8e32f69723414a365b6f54bdda1bc358edc080c74d292ff14c2bc8fec
[INFO] running `Command { std: "docker" "start" "-a" "7e6833f8e32f69723414a365b6f54bdda1bc358edc080c74d292ff14c2bc8fec", kill_on_drop: false }`
[INFO] [stderr]    Compiling chess-diff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `CountTotal`
[INFO] [stdout]  --> examples/space-saving.rs:8:40
[INFO] [stdout]   |
[INFO] [stdout] 8 | use differential_dataflow::operators::{CountTotal, Join, Threshold};
[INFO] [stdout]   |                                        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chess-diff`; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name space_saving --edition=2018 examples/space-saving.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=63ebd565b9619128 -C extra-filename=-63ebd565b9619128 --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern bzip2=/opt/rustwide/target/debug/deps/libbzip2-a70f6aee30dd18a6.rlib --extern differential_dataflow=/opt/rustwide/target/debug/deps/libdifferential_dataflow-dcf074d12a12c322.rlib --extern pgn_reader=/opt/rustwide/target/debug/deps/libpgn_reader-b05f54fe96f02be1.rlib --extern shakmaty=/opt/rustwide/target/debug/deps/libshakmaty-70c657728c55569a.rlib --extern timely=/opt/rustwide/target/debug/deps/libtimely-4b984d3e06dce805.rlib --cap-lints=forbid -L native=/opt/rustwide/target/debug/build/bzip2-sys-73282a66349de913/out/lib` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7e6833f8e32f69723414a365b6f54bdda1bc358edc080c74d292ff14c2bc8fec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e6833f8e32f69723414a365b6f54bdda1bc358edc080c74d292ff14c2bc8fec", kill_on_drop: false }`
[INFO] [stdout] 7e6833f8e32f69723414a365b6f54bdda1bc358edc080c74d292ff14c2bc8fec