[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] checking ruchirK/chess-diff against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FruchirK%2Fchess-diff" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ruchirK/chess-diff on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "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-1-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/TimelyDataflow/differential-dataflow`
[INFO] [stderr]     Updating git repository `https://github.com/niklasf/rust-pgn-reader`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/TimelyDataflow/timely-dataflow`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded abomonation_derive v0.5.0
[INFO] [stderr]   Downloaded bzip2 v0.4.1
[INFO] [stderr]   Downloaded timely_sort v0.1.6
[INFO] [stderr]   Downloaded btoi v0.4.2
[INFO] [stderr]   Downloaded abomonation v0.7.3
[INFO] [stderr]   Downloaded cc v1.0.66
[INFO] [stderr]   Downloaded syn v1.0.54
[INFO] [stderr]   Downloaded shakmaty v0.16.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 617a7bfacff4e0691b00f77b0941ec43f275a8e977e813b10854f05e38387d8f
[INFO] running `Command { std: "docker" "start" "-a" "617a7bfacff4e0691b00f77b0941ec43f275a8e977e813b10854f05e38387d8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "617a7bfacff4e0691b00f77b0941ec43f275a8e977e813b10854f05e38387d8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "617a7bfacff4e0691b00f77b0941ec43f275a8e977e813b10854f05e38387d8f", kill_on_drop: false }`
[INFO] [stdout] 617a7bfacff4e0691b00f77b0941ec43f275a8e977e813b10854f05e38387d8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00a85e9193a2be6ebae6e39ffbfba2b800f3ab9e5174fe636740724d9dfbf335
[INFO] running `Command { std: "docker" "start" "-a" "00a85e9193a2be6ebae6e39ffbfba2b800f3ab9e5174fe636740724d9dfbf335", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking timely_bytes v0.11.0 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]     Checking timely_logging v0.11.1 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]    Compiling shakmaty v0.16.4
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking timely_sort v0.1.6
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking btoi v0.4.2
[INFO] [stderr]     Checking bzip2 v0.4.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking pgn-reader v0.15.0 (https://github.com/niklasf/rust-pgn-reader#49dc0b16)
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]     Checking timely_communication v0.11.1 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]     Checking timely v0.11.1 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]     Checking differential-dataflow v0.11.0 (https://github.com/TimelyDataflow/differential-dataflow#f155b908)
[INFO] [stderr]     Checking 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.34s
[INFO] running `Command { std: "docker" "inspect" "00a85e9193a2be6ebae6e39ffbfba2b800f3ab9e5174fe636740724d9dfbf335", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00a85e9193a2be6ebae6e39ffbfba2b800f3ab9e5174fe636740724d9dfbf335", kill_on_drop: false }`
[INFO] [stdout] 00a85e9193a2be6ebae6e39ffbfba2b800f3ab9e5174fe636740724d9dfbf335
[INFO] checking ruchirK/chess-diff against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FruchirK%2Fchess-diff" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ruchirK/chess-diff on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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-1-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00a4da41e65299ae4fd97068152953336555843d450a396b6e7103e050c3c278
[INFO] running `Command { std: "docker" "start" "-a" "00a4da41e65299ae4fd97068152953336555843d450a396b6e7103e050c3c278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00a4da41e65299ae4fd97068152953336555843d450a396b6e7103e050c3c278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00a4da41e65299ae4fd97068152953336555843d450a396b6e7103e050c3c278", kill_on_drop: false }`
[INFO] [stdout] 00a4da41e65299ae4fd97068152953336555843d450a396b6e7103e050c3c278
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1206b7aa147d645cf54166f14815d245d04140893d3610c5cb12df7c3a46f704
[INFO] running `Command { std: "docker" "start" "-a" "1206b7aa147d645cf54166f14815d245d04140893d3610c5cb12df7c3a46f704", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking timely_bytes v0.11.0 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling shakmaty v0.16.4
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking timely_logging v0.11.1 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]     Checking abomonation v0.7.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking timely_sort v0.1.6
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking btoi v0.4.2
[INFO] [stderr]     Checking bzip2 v0.4.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking pgn-reader v0.15.0 (https://github.com/niklasf/rust-pgn-reader#49dc0b16)
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]     Checking timely_communication v0.11.1 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stderr]     Checking timely v0.11.1 (https://github.com/TimelyDataflow/timely-dataflow#6d1cca4c)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/timely-dataflow-4c0cc365061cd263/6d1cca4/timely/src/progress/subgraph.rs:663:17
[INFO] [stdout]     |
[INFO] [stdout] 663 |                 panic!();
[INFO] [stdout]     |                 ^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `timely` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1206b7aa147d645cf54166f14815d245d04140893d3610c5cb12df7c3a46f704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1206b7aa147d645cf54166f14815d245d04140893d3610c5cb12df7c3a46f704", kill_on_drop: false }`
[INFO] [stdout] 1206b7aa147d645cf54166f14815d245d04140893d3610c5cb12df7c3a46f704