[INFO] fetching crate ffizer 2.4.1...
[INFO] checking ffizer-2.4.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate ffizer 2.4.1 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate ffizer 2.4.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ffizer 2.4.1
[INFO] finished tweaking crates.io crate ffizer 2.4.1
[INFO] tweaked toml for crates.io crate ffizer 2.4.1 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] crate crates.io crate ffizer 2.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b410f1e4aa46afef1d6956db890ed91969271af1f1858f1d61e00be0590be4de
[INFO] running `Command { std: "docker" "start" "-a" "b410f1e4aa46afef1d6956db890ed91969271af1f1858f1d61e00be0590be4de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b410f1e4aa46afef1d6956db890ed91969271af1f1858f1d61e00be0590be4de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b410f1e4aa46afef1d6956db890ed91969271af1f1858f1d61e00be0590be4de", kill_on_drop: false }`
[INFO] [stdout] b410f1e4aa46afef1d6956db890ed91969271af1f1858f1d61e00be0590be4de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6344a7ed121e2c326099d53797379cdb98375aed5e447edc30258617c92bda90
[INFO] running `Command { std: "docker" "start" "-a" "6344a7ed121e2c326099d53797379cdb98375aed5e447edc30258617c92bda90", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking predicates-core v1.0.2
[INFO] [stderr]     Checking zeroize v1.3.0
[INFO] [stderr]    Compiling schemars v0.8.3
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling self_update v0.27.0
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking quick-error v2.0.1
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking dyn-clone v1.0.4
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling tokio v1.8.1
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking pretty_assertions v0.7.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking http v0.2.4
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking predicates-tree v1.0.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking users v0.11.0
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling jobserver v0.1.22
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking quick-xml v0.20.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]     Checking directories v3.0.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking tar v0.4.35
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking semver-parser v0.10.2
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling openssl-src v111.15.0+1.1.1k
[INFO] [stderr]     Checking http-body v0.4.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]     Checking predicates v2.0.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking fsio v0.2.0
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling libssh2-sys v0.2.21
[INFO] [stderr]    Compiling libgit2-sys v0.12.21+1.1.0
[INFO] [stderr]    Compiling jsonnet-sys v0.17.0
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking run_script v0.8.0
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking os_type v2.3.0
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking predicates v1.0.8
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking spectral v0.6.0
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking assert_cmd v1.0.7
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]     Checking dialoguer v0.8.0
[INFO] [stderr]     Checking indicatif v0.16.2
[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 --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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=e0211e4a4a6c3aac -C extra-filename=-e0211e4a4a6c3aac --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-2341dfc7d52c4d0a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b512be6a3f8c1d97.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-2f6444d33d391550.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" "6344a7ed121e2c326099d53797379cdb98375aed5e447edc30258617c92bda90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6344a7ed121e2c326099d53797379cdb98375aed5e447edc30258617c92bda90", kill_on_drop: false }`
[INFO] [stdout] 6344a7ed121e2c326099d53797379cdb98375aed5e447edc30258617c92bda90
