[INFO] cloning repository https://github.com/epage/defenestrate
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/epage/defenestrate" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fepage%2Fdefenestrate", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fepage%2Fdefenestrate'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57afb278c26951fb6cedba58c2d59046c0e86283
[INFO] checking epage/defenestrate against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fepage%2Fdefenestrate" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/epage/defenestrate on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/epage/defenestrate
[INFO] finished tweaking git repo https://github.com/epage/defenestrate
[INFO] tweaked toml for git repo https://github.com/epage/defenestrate written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/epage/defenestrate already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--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-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 3497db31b79c16de3b6341c1e41f6be93df1cdb0186da2df70e189dc4cb39ab2
[INFO] running `Command { std: "docker" "start" "-a" "3497db31b79c16de3b6341c1e41f6be93df1cdb0186da2df70e189dc4cb39ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3497db31b79c16de3b6341c1e41f6be93df1cdb0186da2df70e189dc4cb39ab2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3497db31b79c16de3b6341c1e41f6be93df1cdb0186da2df70e189dc4cb39ab2", kill_on_drop: false }`
[INFO] [stdout] 3497db31b79c16de3b6341c1e41f6be93df1cdb0186da2df70e189dc4cb39ab2
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a5d668af2e40830b082965917d07964bd31e93bd59333add2df331723e8c455
[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" "3a5d668af2e40830b082965917d07964bd31e93bd59333add2df331723e8c455", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking siphasher v0.3.5
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.24
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking simdutf8 v0.1.1
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking proc-exit v1.0.2
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking edit-distance v2.1.0
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling backtrace v0.3.58
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking predicates-tree v1.0.2
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking memchr v2.4.0
[INFO] [stderr]     Checking ryu v1.0.5
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking radium v0.5.3
[INFO] [stderr]     Checking anyhow v1.0.40
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking content_inspector v0.2.4
[INFO] [stderr]     Checking unicase v2.6.0
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]     Checking lexical-core v0.7.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking phf_shared v0.8.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.2
[INFO] [stderr]    Compiling cast v0.2.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking ahash v0.7.2
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]     Checking typos-dict v0.3.0 (/opt/rustwide/workdir/crates/typos-dict)
[INFO] [stderr]     Checking misspell-dict v0.2.0 (/opt/rustwide/workdir/crates/misspell-dict)
[INFO] [stderr]     Checking codespell-dict v0.2.0 (/opt/rustwide/workdir/crates/codespell-dict)
[INFO] [stderr]     Checking wikipedia-dict v0.2.0 (/opt/rustwide/workdir/crates/wikipedia-dict)
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.71/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=81536b39ff888229 -C extra-filename=-81536b39ff888229 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-7b8784b2c4431615.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-299e6c8123e25dcd.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-44670c754cca1080.rmeta --cap-lints allow --cap-lints=forbid` (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" "3a5d668af2e40830b082965917d07964bd31e93bd59333add2df331723e8c455", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a5d668af2e40830b082965917d07964bd31e93bd59333add2df331723e8c455", kill_on_drop: false }`
[INFO] [stdout] 3a5d668af2e40830b082965917d07964bd31e93bd59333add2df331723e8c455