[INFO] cloning repository https://github.com/kindly/flatterer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kindly/flatterer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkindly%2Fflatterer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkindly%2Fflatterer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec98eb5e4958f474367fab79da3ce123b52ac4e1
[INFO] testing kindly/flatterer against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkindly%2Fflatterer" "/workspace/builds/worker-35/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-35/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kindly/flatterer on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kindly/flatterer
[INFO] finished tweaking git repo https://github.com/kindly/flatterer
[INFO] tweaked toml for git repo https://github.com/kindly/flatterer written to /workspace/builds/worker-35/source/Cargo.toml
[INFO] crate git repo https://github.com/kindly/flatterer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fea3488288aec4f17ff80a07af29fe7c861bf5e311809fa487127d32e1a6de8a
[INFO] running `Command { std: "docker" "start" "-a" "fea3488288aec4f17ff80a07af29fe7c861bf5e311809fa487127d32e1a6de8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fea3488288aec4f17ff80a07af29fe7c861bf5e311809fa487127d32e1a6de8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fea3488288aec4f17ff80a07af29fe7c861bf5e311809fa487127d32e1a6de8a", kill_on_drop: false }`
[INFO] [stdout] fea3488288aec4f17ff80a07af29fe7c861bf5e311809fa487127d32e1a6de8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64f4765a9e0231ec8a6a22fbec4a685d97bcf3b4b107f42b9943579c88f78bdb
[INFO] running `Command { std: "docker" "start" "-a" "64f4765a9e0231ec8a6a22fbec4a685d97bcf3b4b107f42b9943579c88f78bdb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling pyo3-build-config v0.14.5
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling encoding_rs v0.8.29
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling chunked_transfer v1.4.0
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling json-tools v1.1.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling libloading v0.7.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling yajlish v0.3.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling clang-sys v1.3.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling paste v0.1.18
[INFO] [stderr]    Compiling pyo3 v0.14.5
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling pyo3-macros-backend v0.14.5
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling env_logger v0.8.4
[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-1.0.81/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"' -C metadata=612079c2c947ef5d -C extra-filename=-612079c2c947ef5d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-9dbaaf035d6d15d1.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-0bcba2a61b67309f.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.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" "64f4765a9e0231ec8a6a22fbec4a685d97bcf3b4b107f42b9943579c88f78bdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64f4765a9e0231ec8a6a22fbec4a685d97bcf3b4b107f42b9943579c88f78bdb", kill_on_drop: false }`
[INFO] [stdout] 64f4765a9e0231ec8a6a22fbec4a685d97bcf3b4b107f42b9943579c88f78bdb