[INFO] cloning repository https://github.com/mcpar-land/slimroll
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mcpar-land/slimroll" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcpar-land%2Fslimroll", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcpar-land%2Fslimroll'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25c03b5d86d4f4ee0f1f279403674ed219a2bb71
[INFO] checking mcpar-land/slimroll against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcpar-land%2Fslimroll" "/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/mcpar-land/slimroll on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mcpar-land/slimroll
[INFO] finished tweaking git repo https://github.com/mcpar-land/slimroll
[INFO] tweaked toml for git repo https://github.com/mcpar-land/slimroll written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mcpar-land/slimroll already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f27114cd37db594e5dc9b7147cc8e0d3bbcbaeff33bc0dc6264eac156b4c763
[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" "8f27114cd37db594e5dc9b7147cc8e0d3bbcbaeff33bc0dc6264eac156b4c763", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f27114cd37db594e5dc9b7147cc8e0d3bbcbaeff33bc0dc6264eac156b4c763", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f27114cd37db594e5dc9b7147cc8e0d3bbcbaeff33bc0dc6264eac156b4c763", kill_on_drop: false }`
[INFO] [stdout] 8f27114cd37db594e5dc9b7147cc8e0d3bbcbaeff33bc0dc6264eac156b4c763
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 041c91226e885222659b192397eb2fed8ada64ef81ee9ea476d8bf79a2045461
[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" "041c91226e885222659b192397eb2fed8ada64ef81ee9ea476d8bf79a2045461", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking bytemuck v1.3.1
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking float-cmp v0.5.3
[INFO] [stderr]    Compiling encoding_rs v0.8.23
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking xmlparser v0.13.2
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]     Checking rctree v0.3.3
[INFO] [stderr]    Compiling serenity v0.9.0-rc.0
[INFO] [stderr]     Checking pico-args v0.3.4
[INFO] [stderr]     Checking unicode-vo v0.1.0
[INFO] [stderr]    Compiling caith v1.0.0
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking typemap_rev v0.1.3
[INFO] [stderr]     Checking kankyo v0.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]     Checking tracing-core v0.1.15
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking data-url v0.1.0
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]     Checking miniz_oxide v0.4.1
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking rgb v0.8.24
[INFO] [stderr]     Checking svgtypes v0.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking kurbo v0.6.2
[INFO] [stderr]     Checking roxmltree v0.13.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking memmap2 v0.1.0
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking simplecss v0.2.0
[INFO] [stderr]     Checking svgfilters v0.2.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]    Compiling rustybuzz v0.1.1
[INFO] [stderr]    Compiling tiny-skia v0.1.0
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking tungstenite v0.10.1
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking fontdb v0.1.0
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking image v0.23.8
[INFO] [stderr]    Compiling pest_generator v2.1.3
[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-1.0.39/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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=e213b703eddea65a -C extra-filename=-e213b703eddea65a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c74c2fa4905d2852.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-15d94dde89232258.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-4182131ee577b5da.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" "041c91226e885222659b192397eb2fed8ada64ef81ee9ea476d8bf79a2045461", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "041c91226e885222659b192397eb2fed8ada64ef81ee9ea476d8bf79a2045461", kill_on_drop: false }`
[INFO] [stdout] 041c91226e885222659b192397eb2fed8ada64ef81ee9ea476d8bf79a2045461