[INFO] fetching crate grin 5.1.0...
[INFO] testing grin-5.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate grin 5.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate grin 5.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config
[INFO] started tweaking crates.io crate grin 5.1.0
[INFO] finished tweaking crates.io crate grin 5.1.0
[INFO] tweaked toml for crates.io crate grin 5.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate grin 5.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cursive_table_view v0.13.2
[INFO] [stderr]   Downloaded grin_config v5.1.0
[INFO] [stderr]   Downloaded grin_pool v5.1.0
[INFO] [stderr]   Downloaded grin_util v5.1.0
[INFO] [stderr]   Downloaded grin_api v5.1.0
[INFO] [stderr]   Downloaded grin_servers v5.1.0
[INFO] [stderr]   Downloaded grin_p2p v5.1.0
[INFO] [stderr]   Downloaded grin_store v5.1.0
[INFO] [stderr]   Downloaded grin_keychain v5.1.0
[INFO] [stderr]   Downloaded grin_chain v5.1.0
[INFO] [stderr]   Downloaded grin_core v5.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 324337db7ac468005631abaf8929bbff24fb2284f891373d25b8276d4aed2d77
[INFO] running `Command { std: "docker" "start" "-a" "324337db7ac468005631abaf8929bbff24fb2284f891373d25b8276d4aed2d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "324337db7ac468005631abaf8929bbff24fb2284f891373d25b8276d4aed2d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "324337db7ac468005631abaf8929bbff24fb2284f891373d25b8276d4aed2d77", kill_on_drop: false }`
[INFO] [stdout] 324337db7ac468005631abaf8929bbff24fb2284f891373d25b8276d4aed2d77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b3227e21bb8c5c90935a3f686b7f98eac0f9ee79331b2c1b821522eb3250741
[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" "6b3227e21bb8c5c90935a3f686b7f98eac0f9ee79331b2c1b821522eb3250741", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling smallvec v1.4.0
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling dtoa v0.4.5
[INFO] [stderr]    Compiling base64 v0.12.1
[INFO] [stderr]    Compiling supercow v0.1.0
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling signal-hook v0.3.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling clang-sys v1.1.1
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling liblmdb-sys v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling unicode-normalization v0.1.12
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling generic-array v0.9.0
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]    Compiling bindgen v0.56.0
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling crypto-mac v0.6.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling ripemd160 v0.7.0
[INFO] [stderr]    Compiling hmac v0.6.3
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling backtrace v0.3.48
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling ahash v0.6.3
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling pbkdf2 v0.2.3
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]    Compiling lmdb-zero v0.4.4
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling grin_secp256k1zkp v0.7.10
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libgit2-sys v0.12.7+1.0.0
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[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,artifacts --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=23ba4a6f6c080a0c -C extra-filename=-23ba4a6f6c080a0c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-18f941bc31ab392e.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-8b5ff6b36ede5b66.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-09e70e8bcc039b17.rmeta --cap-lints allow --cap-lints=warn --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 --cfg syn_disable_nightly_tests` (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" "6b3227e21bb8c5c90935a3f686b7f98eac0f9ee79331b2c1b821522eb3250741", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b3227e21bb8c5c90935a3f686b7f98eac0f9ee79331b2c1b821522eb3250741", kill_on_drop: false }`
[INFO] [stdout] 6b3227e21bb8c5c90935a3f686b7f98eac0f9ee79331b2c1b821522eb3250741