[INFO] cloning repository https://github.com/Yucked/FL4K
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yucked/FL4K" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYucked%2FFL4K", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYucked%2FFL4K'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3697359a4f6bd8b220fbe908c8149e814603d199
[INFO] testing Yucked/FL4K against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYucked%2FFL4K" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yucked/FL4K on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Yucked/FL4K
[INFO] finished tweaking git repo https://github.com/Yucked/FL4K
[INFO] tweaked toml for git repo https://github.com/Yucked/FL4K written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Yucked/FL4K already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trust-dns-resolver v0.19.3
[INFO] [stderr]   Downloaded bson v0.14.1
[INFO] [stderr]   Downloaded os_info v1.3.3
[INFO] [stderr]   Downloaded err-derive v0.2.3
[INFO] [stderr]   Downloaded serde_with_macros v1.1.0
[INFO] [stderr]   Downloaded security-framework v0.4.1
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.14
[INFO] [stderr]   Downloaded async-trait v0.1.26
[INFO] [stderr]   Downloaded trust-dns-proto v0.19.3
[INFO] [stderr]   Downloaded command_attr v0.1.7
[INFO] [stderr]   Downloaded security-framework-sys v0.4.1
[INFO] [stderr]   Downloaded uwl v0.5.1
[INFO] [stderr]   Downloaded h2 v0.2.3
[INFO] [stderr]   Downloaded serde_with v1.4.0
[INFO] [stderr]   Downloaded mongodb v0.9.2
[INFO] [stderr]   Downloaded serenity v0.8.0
[INFO] [stderr]   Downloaded kankyo v0.3.0
[INFO] [stderr]   Downloaded typed-builder v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12cafb6982e26b21f8b3cb5bb3cbc154a9a7ac71151951b45325c049ae723387
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "12cafb6982e26b21f8b3cb5bb3cbc154a9a7ac71151951b45325c049ae723387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12cafb6982e26b21f8b3cb5bb3cbc154a9a7ac71151951b45325c049ae723387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12cafb6982e26b21f8b3cb5bb3cbc154a9a7ac71151951b45325c049ae723387", kill_on_drop: false }`
[INFO] [stdout] 12cafb6982e26b21f8b3cb5bb3cbc154a9a7ac71151951b45325c049ae723387
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93c1d520f0ca4e7e5a71e6a2f4d631bca5c07ebc1cbf785bba019f34e9b21f6f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "93c1d520f0ca4e7e5a71e6a2f4d631bca5c07ebc1cbf785bba019f34e9b21f6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.14
[INFO] [stderr]    Compiling serenity v0.8.0
[INFO] [stderr]    Compiling uwl v0.5.1
[INFO] [stderr]    Compiling kankyo v0.3.0
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]    Compiling ring v0.16.11
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling tokio v0.2.13
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]    Compiling typed-builder v0.3.0
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling sha-1 v0.8.2
[INFO] [stderr]    Compiling sha2 v0.8.1
[INFO] [stderr]    Compiling md-5 v0.8.0
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling input_buffer v0.2.0
[INFO] [stderr]    Compiling http v0.1.21
[INFO] [stderr]    Compiling pbkdf2 v0.3.0
[INFO] [stderr]    Compiling webpki v0.21.2
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling ct-logs v0.6.0
[INFO] [stderr]    Compiling rustls v0.17.0
[INFO] [stderr]    Compiling webpki-roots v0.18.0
[INFO] [stderr]    Compiling rustls v0.16.0
[INFO] [stderr]    Compiling tungstenite v0.9.2
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling rustls-native-certs v0.3.0
[INFO] [stderr]    Compiling tokio-rustls v0.13.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.13
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling enum-as-inner v0.3.2
[INFO] [stderr]    Compiling async-trait v0.1.26
[INFO] [stderr]    Compiling serde_with_macros v1.1.0
[INFO] [stderr]    Compiling command_attr v0.1.7
[INFO] [stderr]    Compiling err-derive v0.2.3
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr] error: could not compile `command_attr`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name command_attr --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/command_attr-0.1.7/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 -C metadata=f3c57beaf54c0a7e -C extra-filename=-f3c57beaf54c0a7e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-6bd3634ba5f0eafb.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-637e411a9e00779a.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-c19201a34aaac8c8.rlib --extern proc_macro --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: linking with `cc` failed: signal: 9
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.pin_project_internal.5wctncdk-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/libpin_project_internal-18f8e8797e260e9a.so" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.1t65bcayztsz4q27.rcgu.o" "/opt/rustwide/target/debug/deps/pin_project_internal-18f8e8797e260e9a.2zt77elq2xfefoi5.rcgu.o" "-Wl,--gc-sections" "-shared" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libsyn-c19201a34aaac8c8.rlib" "/opt/rustwide/target/debug/deps/libquote-637e411a9e00779a.rlib" "/opt/rustwide/target/debug/deps/libproc_macro2-6bd3634ba5f0eafb.rlib" "/opt/rustwide/target/debug/deps/libunicode_xid-9023492ceb52ed9a.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libproc_macro-bdc4db8d8e428c02.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e12de7683a34c500.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-446a53c2e468675f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-86fef9fb252a2d33.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-3bed9bfd30304751.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0e38eeb474a7b386.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a846ed547b824740.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c9540f0a4fb9265d.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7d2ca66c92c356eb.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-147e2c808f949493.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-bd2a4369506670e9.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74bfdd0ce7d0ed48.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6777f47f1c491841.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b104f1790174f2be.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-db37898996f45c13.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-25b7435131fc4938.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9d4b6f3c097e876e.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-3f953ad652ab829a.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "93c1d520f0ca4e7e5a71e6a2f4d631bca5c07ebc1cbf785bba019f34e9b21f6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93c1d520f0ca4e7e5a71e6a2f4d631bca5c07ebc1cbf785bba019f34e9b21f6f", kill_on_drop: false }`
[INFO] [stdout] 93c1d520f0ca4e7e5a71e6a2f4d631bca5c07ebc1cbf785bba019f34e9b21f6f