[INFO] fetching crate let-engine 0.10.0...
[INFO] checking let-engine-0.10.0 against try#0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef for pr-147859
[INFO] extracting crate let-engine 0.10.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate let-engine 0.10.0
[INFO] finished tweaking crates.io crate let-engine 0.10.0
[INFO] tweaked toml for crates.io crate let-engine 0.10.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate let-engine 0.10.0 on toolchain 0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate let-engine 0.10.0 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" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62f8dacd6f8fb5b67bd541198992fbb367731b5ada5eeaaf9c6443e2f06053b3
[INFO] running `Command { std: "docker" "start" "-a" "62f8dacd6f8fb5b67bd541198992fbb367731b5ada5eeaaf9c6443e2f06053b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62f8dacd6f8fb5b67bd541198992fbb367731b5ada5eeaaf9c6443e2f06053b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62f8dacd6f8fb5b67bd541198992fbb367731b5ada5eeaaf9c6443e2f06053b3", kill_on_drop: false }`
[INFO] [stdout] 62f8dacd6f8fb5b67bd541198992fbb367731b5ada5eeaaf9c6443e2f06053b3
[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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94380471177e591382e30638a7c562db8858093425b0126f4f775b04866bcd24
[INFO] running `Command { std: "docker" "start" "-a" "94380471177e591382e30638a7c562db8858093425b0126f4f775b04866bcd24", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]     Checking smallvec v1.13.1
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling xml-rs v0.8.19
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]    Compiling ahash v0.8.7
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking ttf-parser v0.20.0
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]     Checking libloading v0.8.1
[INFO] [stderr]     Checking encoding_rs v0.8.33
[INFO] [stderr]    Compiling zerocopy v0.7.32
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling allocator-api2 v0.2.16
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]     Checking dlib v0.5.2
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking mint v0.5.9
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]     Checking fdeflate v0.3.4
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling serde_json v1.0.113
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking png v0.17.11
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.11
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling smithay-client-toolkit v0.16.1
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling ryu v1.0.16
[INFO] [stderr]    Compiling itoa v1.0.10
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]     Checking xcursor v0.3.5
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking strict-num v0.1.1
[INFO] [stderr]    Compiling winnow v0.5.39
[INFO] [stderr]    Compiling mime_guess2 v2.0.5
[INFO] [stderr]     Checking crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling vk-parse v0.12.0
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking robust v1.1.0
[INFO] [stderr]     Checking num-rational v0.4.1
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]     Checking weezl v0.1.8
[INFO] [stderr]    Compiling ash v0.37.3+1.3.251
[INFO] [stderr]     Checking rayon v1.8.1
[INFO] [stderr]     Checking flume v0.11.0
[INFO] [stderr]     Checking zune-inflate v0.2.54
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking nix v0.25.1
[INFO] [stderr]     Checking memmap2 v0.5.10
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking raw-window-handle v0.5.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking owned_ttf_parser v0.20.0
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]     Checking ab_glyph v0.2.23
[INFO] [stderr]     Checking lebe v0.5.2
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]     Checking xi-unicode v0.3.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking gif v0.12.0
[INFO] [stderr]    Compiling wayland-client v0.29.5
[INFO] [stderr]    Compiling wayland-protocols v0.29.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling winit v0.28.7
[INFO] [stderr]     Checking glyph_brush_layout v0.2.3
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking ordered-float v4.2.0
[INFO] [stderr]     Checking glam v0.25.0
[INFO] [stderr]     Checking ringbuf v0.3.3
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]    Compiling regex-automata v0.4.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking atomic-arena v0.1.1
[INFO] [stderr]     Checking jpeg-decoder v0.3.1
[INFO] [stderr]     Checking glyph_brush_draw_cache v0.1.5
[INFO] [stderr]     Checking spin_sleep v1.2.0
[INFO] [stderr]     Checking glyph_brush v0.7.8
[INFO] [stderr]     Checking unicode_names2 v0.6.0
[INFO] [stderr]     Checking atomic_float v0.1.0
[INFO] [stderr]     Checking tiff v0.9.1
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-1.0.109/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --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"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "quote", "test", "visit", "visit-mut"))' -C metadata=cdb9535057ee7e80 -C extra-filename=-8256ec1ec6924c86 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e7d3e92e30a3d9d9.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-5074db85a98360d4.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-f2de522ba645d884.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "94380471177e591382e30638a7c562db8858093425b0126f4f775b04866bcd24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94380471177e591382e30638a7c562db8858093425b0126f4f775b04866bcd24", kill_on_drop: false }`
[INFO] [stdout] 94380471177e591382e30638a7c562db8858093425b0126f4f775b04866bcd24