[INFO] cloning repository https://github.com/iamzko/rust_study1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamzko/rust_study1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamzko%2Frust_study1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamzko%2Frust_study1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ac91791a8ab6657275b78efe85c7c22714b1f30
[INFO] checking iamzko/rust_study1 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamzko%2Frust_study1" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iamzko/rust_study1 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iamzko/rust_study1
[INFO] finished tweaking git repo https://github.com/iamzko/rust_study1
[INFO] tweaked toml for git repo https://github.com/iamzko/rust_study1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/iamzko/rust_study1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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] f7b11c6d914cd34da57d8699bb96131e3ebde9cffa46b961781d6d396cac64d3
[INFO] running `Command { std: "docker" "start" "-a" "f7b11c6d914cd34da57d8699bb96131e3ebde9cffa46b961781d6d396cac64d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7b11c6d914cd34da57d8699bb96131e3ebde9cffa46b961781d6d396cac64d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7b11c6d914cd34da57d8699bb96131e3ebde9cffa46b961781d6d396cac64d3", kill_on_drop: false }`
[INFO] [stdout] f7b11c6d914cd34da57d8699bb96131e3ebde9cffa46b961781d6d396cac64d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] eff02ae5b9983898bfe9dbb211799ee88c8e95d219febce776ba74473c19e920
[INFO] running `Command { std: "docker" "start" "-a" "eff02ae5b9983898bfe9dbb211799ee88c8e95d219febce776ba74473c19e920", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]     Checking futures-sink v0.3.12
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking sample-consensus v1.0.1
[INFO] [stderr]     Checking colorful v0.2.1
[INFO] [stderr]     Checking weezl v0.1.3
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]     Checking copyless v0.1.5
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking hamming v0.1.3
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking primal-estimate v0.3.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking space v0.10.3
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling nom v6.1.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking primal-bit v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]     Checking bitarray v0.2.6
[INFO] [stderr]    Compiling wayland-sys v0.28.3
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking primal-sieve v0.3.1
[INFO] [stderr]     Checking matrixmultiply v0.1.15
[INFO] [stderr]    Compiling tinyfiledialogs v3.3.10
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking relevant v0.4.2
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling euclid_macros v0.1.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling wayland-scanner v0.28.3
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking euclid v0.20.14
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking xcursor v0.3.3
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]     Checking primal-check v0.3.1
[INFO] [stderr]     Checking gfx-hal v0.4.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking simba v0.3.1
[INFO] [stderr]     Checking ash v0.29.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking lyon_geom v0.14.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.60/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=a97eff8b7e7a45b6 -C extra-filename=-a97eff8b7e7a45b6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-1a6a39c3cd9b115f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-c19654f4bfde824f.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-accda8c4d770d472.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" "eff02ae5b9983898bfe9dbb211799ee88c8e95d219febce776ba74473c19e920", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eff02ae5b9983898bfe9dbb211799ee88c8e95d219febce776ba74473c19e920", kill_on_drop: false }`
[INFO] [stdout] eff02ae5b9983898bfe9dbb211799ee88c8e95d219febce776ba74473c19e920