[INFO] fetching crate cobalt-bin 0.17.5...
[INFO] testing cobalt-bin-0.17.5 against 1.59.0 for beta-1.60-1
[INFO] extracting crate cobalt-bin 0.17.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cobalt-bin 0.17.5 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cobalt-bin 0.17.5
[INFO] finished tweaking crates.io crate cobalt-bin 0.17.5
[INFO] tweaked toml for crates.io crate cobalt-bin 0.17.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cobalt-bin 0.17.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5c543768b10dbd42093b994afd315b7b2ddf3de6133bfc2c8f387ae1bbc82b4
[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" "c5c543768b10dbd42093b994afd315b7b2ddf3de6133bfc2c8f387ae1bbc82b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5c543768b10dbd42093b994afd315b7b2ddf3de6133bfc2c8f387ae1bbc82b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5c543768b10dbd42093b994afd315b7b2ddf3de6133bfc2c8f387ae1bbc82b4", kill_on_drop: false }`
[INFO] [stdout] c5c543768b10dbd42093b994afd315b7b2ddf3de6133bfc2c8f387ae1bbc82b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a9154c44ead2a4fe306f076fbe46ca68c69ae2300b6a136de259d378336fad7
[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" "1a9154c44ead2a4fe306f076fbe46ca68c69ae2300b6a136de259d378336fad7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling ryu v1.0.6
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling anymap2 v0.13.0
[INFO] [stderr]    Compiling encoding_rs v0.8.29
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]    Compiling deunicode v1.3.1
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling bytecount v0.6.2
[INFO] [stderr]    Compiling utf8-width v0.1.5
[INFO] [stderr]    Compiling numerals v0.1.4
[INFO] [stderr]    Compiling macro-utils v0.1.3
[INFO] [stderr]    Compiling chunked_transfer v1.4.0
[INFO] [stderr]    Compiling ascii v1.0.0
[INFO] [stderr]    Compiling cow-utils v0.1.2
[INFO] [stderr]    Compiling pathdiff v0.2.1
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling line-wrap v0.1.1
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling html-escape v0.2.9
[INFO] [stderr]    Compiling minifier v0.0.41
[INFO] [stderr]    Compiling open v2.0.2
[INFO] [stderr]    Compiling proc-quote-impl v0.3.2
[INFO] [stderr]    Compiling bitvec v0.19.6
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling walkdir v0.1.8
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling status v0.0.10
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling time v0.3.5
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling ghp v0.1.2
[INFO] [stderr]    Compiling flate2 v1.0.22
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling quick-xml v0.20.0
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling sass-sys v0.4.22
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling shellexpand v2.1.0
[INFO] [stderr]    Compiling fancy-regex v0.7.1
[INFO] [stderr]    Compiling stfu8 v0.2.4
[INFO] [stderr]    Compiling globset v0.4.8
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.82/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 -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=da83d5e5e7c8905a -C extra-filename=-da83d5e5e7c8905a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-5b628874f3abff7a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-f072c03decc61796.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-aeb18ec3bc792598.rmeta --cap-lints allow --cap-lints=warn --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" "1a9154c44ead2a4fe306f076fbe46ca68c69ae2300b6a136de259d378336fad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a9154c44ead2a4fe306f076fbe46ca68c69ae2300b6a136de259d378336fad7", kill_on_drop: false }`
[INFO] [stdout] 1a9154c44ead2a4fe306f076fbe46ca68c69ae2300b6a136de259d378336fad7