[INFO] fetching crate tether-midi-mediator 0.4.4...
[INFO] checking tether-midi-mediator-0.4.4 against try#50d7e48beb74b48bd17c3749bfb73843c9ae0166 for pr-151102
[INFO] extracting crate tether-midi-mediator 0.4.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tether-midi-mediator 0.4.4
[INFO] finished tweaking crates.io crate tether-midi-mediator 0.4.4
[INFO] tweaked toml for crates.io crate tether-midi-mediator 0.4.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tether-midi-mediator 0.4.4 on toolchain 50d7e48beb74b48bd17c3749bfb73843c9ae0166
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50d7e48beb74b48bd17c3749bfb73843c9ae0166" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tether-midi-mediator 0.4.4 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" "+50d7e48beb74b48bd17c3749bfb73843c9ae0166" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+50d7e48beb74b48bd17c3749bfb73843c9ae0166" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b5de98c09789e7a9ece6e4a22979b98f8687fff6d8b26e994b879e9abc6497b
[INFO] running `Command { std: "docker" "start" "-a" "9b5de98c09789e7a9ece6e4a22979b98f8687fff6d8b26e994b879e9abc6497b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b5de98c09789e7a9ece6e4a22979b98f8687fff6d8b26e994b879e9abc6497b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b5de98c09789e7a9ece6e4a22979b98f8687fff6d8b26e994b879e9abc6497b", kill_on_drop: false }`
[INFO] [stdout] 9b5de98c09789e7a9ece6e4a22979b98f8687fff6d8b26e994b879e9abc6497b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+50d7e48beb74b48bd17c3749bfb73843c9ae0166" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63bd6f8fae688e16407f363d3d597756d6d11a3b35507ba4b2b8432b70475285
[INFO] running `Command { std: "docker" "start" "-a" "63bd6f8fae688e16407f363d3d597756d6d11a3b35507ba4b2b8432b70475285", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling cc v1.2.5
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking libloading v0.8.3
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling rustix v0.38.31
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking dlib v0.5.2
[INFO] [stderr]    Compiling wayland-sys v0.31.1
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling quick-xml v0.31.0
[INFO] [stderr]    Compiling winnow v0.4.1
[INFO] [stderr]     Checking cpufeatures v0.2.7
[INFO] [stderr]    Compiling toml_datetime v0.6.2
[INFO] [stderr]    Compiling semver v1.0.24
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]     Checking async-channel v1.8.0
[INFO] [stderr]    Compiling aho-corasick v1.0.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]     Checking rustls-pki-types v1.10.1
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]     Checking ttf-parser v0.19.0
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]    Compiling regex-syntax v0.7.2
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling wayland-scanner v0.31.1
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]    Compiling wayland-backend v0.3.3
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking bytes v1.9.0
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling xml-rs v0.8.13
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.8
[INFO] [stderr]    Compiling openssl-sys v0.9.104
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking async-broadcast v0.5.1
[INFO] [stderr]     Checking ordered-stream v0.2.0
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling toml_edit v0.19.8
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.18.1
[INFO] [stderr]     Checking cursor-icon v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]     Checking xkeysym v0.2.0
[INFO] [stderr]     Checking owned_ttf_parser v0.19.0
[INFO] [stderr]     Checking ab_glyph v0.2.21
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking strict-num v0.1.1
[INFO] [stderr]    Compiling rustls v0.22.4
[INFO] [stderr]    Compiling httparse v1.9.5
[INFO] [stderr]     Checking as-raw-xcb-connection v1.0.1
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking x11rb-protocol v0.13.0
[INFO] [stderr]     Checking xcursor v0.3.4
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking memmap2 v0.9.4
[INFO] [stderr]     Checking socket2 v0.5.8
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling pharos v0.5.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling winit v0.29.14
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking event-listener v5.2.0
[INFO] [stderr]     Checking simd-adler32 v0.3.5
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling openssl v0.10.68
[INFO] [stderr]     Checking raw-window-handle v0.5.2
[INFO] [stderr]     Checking event-listener-strategy v0.5.0
[INFO] [stderr]     Checking http v1.2.0
[INFO] [stderr]    Compiling glutin_glx_sys v0.5.0
[INFO] [stderr]    Compiling regex v1.8.3
[INFO] [stderr]    Compiling glutin_egl_sys v0.6.0
[INFO] [stderr]     Checking xdg-home v1.0.0
[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/50d7e48beb74b48bd17c3749bfb73843c9ae0166/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.52/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"' --cfg 'feature="visit-mut"' --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=b7bedcafd62b2607 -C extra-filename=-ebcca3b9aa4c331c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-dde0b0a7084a3282.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-8f0abd06bb5c3a48.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-6984f38657b6eff3.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" "63bd6f8fae688e16407f363d3d597756d6d11a3b35507ba4b2b8432b70475285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63bd6f8fae688e16407f363d3d597756d6d11a3b35507ba4b2b8432b70475285", kill_on_drop: false }`
[INFO] [stdout] 63bd6f8fae688e16407f363d3d597756d6d11a3b35507ba4b2b8432b70475285