[INFO] cloning repository https://github.com/brunocodutra/chessboard
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brunocodutra/chessboard" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrunocodutra%2Fchessboard", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrunocodutra%2Fchessboard'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] abc0632d3178b2bfde90bd54db965f4ccd87a2cc
[INFO] checking brunocodutra/chessboard against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrunocodutra%2Fchessboard" "/workspace/builds/worker-69/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-69/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brunocodutra/chessboard on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brunocodutra/chessboard
[INFO] finished tweaking git repo https://github.com/brunocodutra/chessboard
[INFO] tweaked toml for git repo https://github.com/brunocodutra/chessboard written to /workspace/builds/worker-69/source/Cargo.toml
[INFO] crate git repo https://github.com/brunocodutra/chessboard already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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 async-io v1.4.0
[INFO] [stderr]   Downloaded btoi v0.4.2
[INFO] [stderr]   Downloaded port_check v0.1.5
[INFO] [stderr]   Downloaded proptest-derive v0.3.0
[INFO] [stderr]   Downloaded mockall v0.9.1
[INFO] [stderr]   Downloaded mockall_derive v0.9.1
[INFO] [stderr]   Downloaded vampirc-uci v0.11.0
[INFO] [stderr]   Downloaded nix v0.22.1
[INFO] [stderr]   Downloaded shakmaty v0.19.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80205c26176975176ea2644991d203fd8c76ecf0e2caee4cae800091aa2b2b51
[INFO] running `Command { std: "docker" "start" "-a" "80205c26176975176ea2644991d203fd8c76ecf0e2caee4cae800091aa2b2b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80205c26176975176ea2644991d203fd8c76ecf0e2caee4cae800091aa2b2b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80205c26176975176ea2644991d203fd8c76ecf0e2caee4cae800091aa2b2b51", kill_on_drop: false }`
[INFO] [stdout] 80205c26176975176ea2644991d203fd8c76ecf0e2caee4cae800091aa2b2b51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 118e0d92e5b4e6ce67c50ffc0d5a811f783a0279aee61f4e142c39a1d5695e26
[INFO] running `Command { std: "docker" "start" "-a" "118e0d92e5b4e6ce67c50ffc0d5a811f783a0279aee61f4e142c39a1d5695e26", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking fastrand v1.4.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking vec-arena v1.1.0
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling signal-hook v0.3.8
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling shakmaty v0.19.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking predicates-core v1.0.2
[INFO] [stderr]     Checking arrayvec v0.7.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking quick-error v2.0.0
[INFO] [stderr]     Checking fragile v1.0.0
[INFO] [stderr]     Checking downcast v0.10.0
[INFO] [stderr]     Checking port_check v0.1.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking btoi v0.4.2
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking nix v0.22.1
[INFO] [stderr]     Checking fd-lock v3.0.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking predicates-tree v1.0.2
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.44/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=b232c172eeb01781 -C extra-filename=-b232c172eeb01781 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-74cf65b213176c4b.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-520fec877571f6ee.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-17df5e5ca0bb5bda.rmeta --cap-lints allow --cap-lints=forbid --cfg syn_can_match_trailing_dollar --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path` (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" "118e0d92e5b4e6ce67c50ffc0d5a811f783a0279aee61f4e142c39a1d5695e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "118e0d92e5b4e6ce67c50ffc0d5a811f783a0279aee61f4e142c39a1d5695e26", kill_on_drop: false }`
[INFO] [stdout] 118e0d92e5b4e6ce67c50ffc0d5a811f783a0279aee61f4e142c39a1d5695e26