[INFO] cloning repository https://github.com/Isaac-Fate/ironback
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Isaac-Fate/ironback" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIsaac-Fate%2Fironback", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIsaac-Fate%2Fironback'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 497b80c47dd10593140512b2921b157ee912c053
[INFO] testing Isaac-Fate/ironback/497b80c47dd10593140512b2921b157ee912c053 against master#7704328ba5ae8d6ce0ac303c9d5a1a1605906766 for pr-146989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIsaac-Fate%2Fironback" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Isaac-Fate/ironback
[INFO] finished tweaking git repo https://github.com/Isaac-Fate/ironback
[INFO] tweaked toml for git repo https://github.com/Isaac-Fate/ironback written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Isaac-Fate/ironback on toolchain 7704328ba5ae8d6ce0ac303c9d5a1a1605906766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7704328ba5ae8d6ce0ac303c9d5a1a1605906766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Isaac-Fate/ironback 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" "+7704328ba5ae8d6ce0ac303c9d5a1a1605906766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shuttle-service v0.46.0
[INFO] [stderr]   Downloaded strfmt v0.2.4
[INFO] [stderr]   Downloaded shuttle-runtime v0.46.0
[INFO] [stderr]   Downloaded shuttle-common v0.46.0
[INFO] [stderr]   Downloaded async-trait v0.1.80
[INFO] [stderr]   Downloaded envconfig v0.10.0
[INFO] [stderr]   Downloaded unicode-properties v0.1.1
[INFO] [stderr]   Downloaded envconfig_derive v0.10.0
[INFO] [stderr]   Downloaded jsonwebtoken v9.3.0
[INFO] [stderr]   Downloaded bytestring v1.3.1
[INFO] [stderr]   Downloaded zstd v0.13.1
[INFO] [stderr]   Downloaded zstd-safe v7.1.0
[INFO] [stderr]   Downloaded comfy-table v6.2.0
[INFO] [stderr]   Downloaded ordered-float v4.2.1
[INFO] [stderr]   Downloaded uuid v1.9.1
[INFO] [stderr]   Downloaded crossterm v0.26.1
[INFO] [stderr]   Downloaded tracing-opentelemetry v0.22.0
[INFO] [stderr]   Downloaded actix-http v3.8.0
[INFO] [stderr]   Downloaded opentelemetry_sdk v0.21.2
[INFO] [stderr]   Downloaded hyper v0.14.29
[INFO] [stderr]   Downloaded opentelemetry v0.21.0
[INFO] [stderr]   Downloaded actix-server v2.4.0
[INFO] [stderr]   Downloaded shuttle-proto v0.46.0
[INFO] [stderr]   Downloaded actix-web v4.8.0
[INFO] [stderr]   Downloaded shuttle-actix-web v0.46.0
[INFO] [stderr]   Downloaded shuttle-codegen v0.46.0
[INFO] [stderr]   Downloaded opentelemetry-http v0.10.0
[INFO] [stderr]   Downloaded tokio-macros v2.3.0
[INFO] [stderr]   Downloaded jobserver v0.1.31
[INFO] [stderr]   Downloaded zstd-sys v2.0.11+zstd.1.5.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+7704328ba5ae8d6ce0ac303c9d5a1a1605906766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76f22b267e0a907bd39c9692eabe33cc79416f3fcf0e3339c505e56a9d0ca917
[INFO] running `Command { std: "docker" "start" "-a" "76f22b267e0a907bd39c9692eabe33cc79416f3fcf0e3339c505e56a9d0ca917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76f22b267e0a907bd39c9692eabe33cc79416f3fcf0e3339c505e56a9d0ca917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76f22b267e0a907bd39c9692eabe33cc79416f3fcf0e3339c505e56a9d0ca917", kill_on_drop: false }`
[INFO] [stdout] 76f22b267e0a907bd39c9692eabe33cc79416f3fcf0e3339c505e56a9d0ca917
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+7704328ba5ae8d6ce0ac303c9d5a1a1605906766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7e99702d7218bf07a9727ba497f8a6850af0c0de3d9481dd05122452175e999
[INFO] running `Command { std: "docker" "start" "-a" "a7e99702d7218bf07a9727ba497f8a6850af0c0de3d9481dd05122452175e999", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling allocator-api2 v0.2.18
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling syn v2.0.68
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling jobserver v0.1.31
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling tinyvec v1.6.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling serde_json v1.0.120
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling cc v1.0.104
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling httparse v1.9.4
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling tower-service v0.3.2
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling urlencoding v2.1.3
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling tower-layer v0.3.2
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling signal-hook-mio v0.2.3
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling crc-catalog v2.4.0
[INFO] [stderr]    Compiling crc v3.2.1
[INFO] [stderr]    Compiling hashlink v0.8.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.13
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling axum-core v0.3.4
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]    Compiling ordered-float v4.2.1
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling zstd-sys v2.0.11+zstd.1.5.6
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]    Compiling deranged v0.3.11
[INFO] [stderr]    Compiling tokio v1.38.0
[INFO] [stderr]    Compiling crossterm v0.26.1
[INFO] [stderr]    Compiling axum v0.6.20
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]    Compiling bytestring v1.3.1
[INFO] [stderr]    Compiling local-waker v0.1.4
[INFO] [stderr]    Compiling iana-time-zone v0.1.60
[INFO] [stderr]    Compiling zstd-safe v7.1.0
[INFO] [stderr]    Compiling unicode-properties v0.1.1
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling strum v0.24.1
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling stringprep v0.1.5
[INFO] [stderr]    Compiling hkdf v0.12.4
[INFO] [stderr]    Compiling url v2.5.2
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling crossterm v0.27.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling time v0.3.36
[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/7704328ba5ae8d6ce0ac303c9d5a1a1605906766/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.68/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="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=80957068e95d932d -C extra-filename=-b877388593723eb2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-f3285e5c19000248.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b29be6395babc9ba.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" "a7e99702d7218bf07a9727ba497f8a6850af0c0de3d9481dd05122452175e999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7e99702d7218bf07a9727ba497f8a6850af0c0de3d9481dd05122452175e999", kill_on_drop: false }`
[INFO] [stdout] a7e99702d7218bf07a9727ba497f8a6850af0c0de3d9481dd05122452175e999