[INFO] cloning repository https://github.com/gcarq/chess-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gcarq/chess-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgcarq%2Fchess-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgcarq%2Fchess-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] efacb0c8286fb961502f660cbbdcddea1ed45987
[INFO] testing gcarq/chess-engine against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgcarq%2Fchess-engine" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gcarq/chess-engine on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/gcarq/chess-engine
[INFO] finished tweaking git repo https://github.com/gcarq/chess-engine
[INFO] tweaked toml for git repo https://github.com/gcarq/chess-engine written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/gcarq/chess-engine 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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded svgtypes v0.8.2
[INFO] [stderr]   Downloaded const_panic v0.2.6
[INFO] [stderr]   Downloaded lyon_geom v1.0.3
[INFO] [stderr]   Downloaded emath v0.19.0
[INFO] [stderr]   Downloaded bevy-inspector-egui-derive v0.13.0
[INFO] [stderr]   Downloaded lyon_tessellation v1.0.5
[INFO] [stderr]   Downloaded bevy_egui v0.16.1
[INFO] [stderr]   Downloaded lyon_path v1.0.2
[INFO] [stderr]   Downloaded epaint v0.19.0
[INFO] [stderr]   Downloaded bevy-inspector-egui v0.13.0
[INFO] [stderr]   Downloaded pretty-type-name v1.0.0
[INFO] [stderr]   Downloaded bevy_svg v0.8.0
[INFO] [stderr]   Downloaded bevy_prototype_lyon v0.6.0
[INFO] [stderr]   Downloaded egui v0.19.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27c69bd23287e5f7bde832f181082a4312b4fc440735dd87c132ad7b750910fd
[INFO] running `Command { std: "docker" "start" "-a" "27c69bd23287e5f7bde832f181082a4312b4fc440735dd87c132ad7b750910fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27c69bd23287e5f7bde832f181082a4312b4fc440735dd87c132ad7b750910fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27c69bd23287e5f7bde832f181082a4312b4fc440735dd87c132ad7b750910fd", kill_on_drop: false }`
[INFO] [stdout] 27c69bd23287e5f7bde832f181082a4312b4fc440735dd87c132ad7b750910fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9b9a5d9c501b5e7b291d28f1b44095a1ae462979b2ff4d3ba29f80e49f86b06
[INFO] running `Command { std: "docker" "start" "-a" "c9b9a5d9c501b5e7b291d28f1b44095a1ae462979b2ff4d3ba29f80e49f86b06", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c9b9a5d9c501b5e7b291d28f1b44095a1ae462979b2ff4d3ba29f80e49f86b06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9b9a5d9c501b5e7b291d28f1b44095a1ae462979b2ff4d3ba29f80e49f86b06", kill_on_drop: false }`
[INFO] [stdout] c9b9a5d9c501b5e7b291d28f1b44095a1ae462979b2ff4d3ba29f80e49f86b06