[INFO] cloning repository https://github.com/doy/rbw
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/doy/rbw" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdoy%2Frbw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdoy%2Frbw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e56f733275cdd1406a4d796d17dbcbf48432a66
[INFO] building doy/rbw against master#c2804e6ec2c29a5c7368600ea173b890e2655c3d for pr-97334-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdoy%2Frbw" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/doy/rbw on toolchain c2804e6ec2c29a5c7368600ea173b890e2655c3d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c2804e6ec2c29a5c7368600ea173b890e2655c3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/doy/rbw
[INFO] finished tweaking git repo https://github.com/doy/rbw
[INFO] tweaked toml for git repo https://github.com/doy/rbw written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/doy/rbw already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c2804e6ec2c29a5c7368600ea173b890e2655c3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustls-native-certs v0.6.1
[INFO] [stderr]   Downloaded daemonize v0.4.1
[INFO] [stderr]   Downloaded totp-lite v1.0.3
[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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c2804e6ec2c29a5c7368600ea173b890e2655c3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59ccf030ea1e51764c8a41a2cd36a70548ed4234b31c2b30d50a9f3c4c684dc5
[INFO] running `Command { std: "docker" "start" "-a" "59ccf030ea1e51764c8a41a2cd36a70548ed4234b31c2b30d50a9f3c4c684dc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59ccf030ea1e51764c8a41a2cd36a70548ed4234b31c2b30d50a9f3c4c684dc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59ccf030ea1e51764c8a41a2cd36a70548ed4234b31c2b30d50a9f3c4c684dc5", kill_on_drop: false }`
[INFO] [stdout] 59ccf030ea1e51764c8a41a2cd36a70548ed4234b31c2b30d50a9f3c4c684dc5
[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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c2804e6ec2c29a5c7368600ea173b890e2655c3d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f887bc34a8ce723a5b5288d0ad3aac076709e93c2c8058edc389e54f67319205
[INFO] running `Command { std: "docker" "start" "-a" "f887bc34a8ce723a5b5288d0ad3aac076709e93c2c8058edc389e54f67319205", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling base64ct v1.0.1
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]    Compiling matches v0.1.9
[INFO] [stderr]    Compiling futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling rustls v0.20.4
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling const-oid v0.6.2
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling httpdate v1.0.2
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling unicode-bidi v0.3.7
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling anyhow v1.0.55
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling paw-raw v1.0.0
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling boxfnonce v0.1.1
[INFO] [stderr]    Compiling block-padding v0.2.1
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling ipnet v2.3.1
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling base32 v0.4.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling http v0.2.6
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling pem-rfc7468 v0.2.4
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling indexmap v1.8.0
[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 memoffset v0.6.5
[INFO] [stderr]    Compiling rustls-pemfile v0.2.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling tracing-core v0.1.22
[INFO] [stderr]    Compiling num-bigint-dig v0.7.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling rustls-native-certs v0.6.1
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling tracing v0.1.31
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling crypto-mac v0.11.1
[INFO] [stderr]    Compiling cipher v0.3.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling sha2 v0.9.9
[INFO] [stderr]    Compiling sha-1 v0.9.8
[INFO] [stderr]    Compiling hmac v0.11.0
[INFO] [stderr]    Compiling aes v0.7.5
[INFO] [stderr]    Compiling block-modes v0.8.1
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling mio v0.8.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling daemonize v0.4.1
[INFO] [stderr]    Compiling nix v0.23.1
[INFO] [stderr]    Compiling region v3.0.0
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling http-body v0.4.4
[INFO] [stderr]    Compiling hkdf v0.11.0
[INFO] [stderr]    Compiling totp-lite v1.0.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling directories v4.0.1
[INFO] [stderr]    Compiling crypto-bigint v0.2.11
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling password-hash v0.3.2
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pbkdf2 v0.9.0
[INFO] [stderr]    Compiling der v0.4.5
[INFO] [stderr]    Compiling sct v0.7.0
[INFO] [stderr]    Compiling webpki v0.22.0
[INFO] [stderr]    Compiling spki v0.4.1
[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-1.0.86/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"' --cfg 'feature="visit-mut"' -C metadata=10875df8e39c5b9e -C extra-filename=-10875df8e39c5b9e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-f03cd9dc49f46ded.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-8abf03b0e6500802.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] running `Command { std: "docker" "inspect" "f887bc34a8ce723a5b5288d0ad3aac076709e93c2c8058edc389e54f67319205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f887bc34a8ce723a5b5288d0ad3aac076709e93c2c8058edc389e54f67319205", kill_on_drop: false }`
[INFO] [stdout] f887bc34a8ce723a5b5288d0ad3aac076709e93c2c8058edc389e54f67319205