[INFO] fetching crate my-iot 0.96.9...
[INFO] checking my-iot-0.96.9 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate my-iot 0.96.9 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate my-iot 0.96.9 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate my-iot 0.96.9
[INFO] finished tweaking crates.io crate my-iot 0.96.9
[INFO] tweaked toml for crates.io crate my-iot 0.96.9 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate my-iot 0.96.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sentry v0.20.1
[INFO] [stderr]   Downloaded sentry-log v0.20.1
[INFO] [stderr]   Downloaded sentry-contexts v0.20.1
[INFO] [stderr]   Downloaded sentry-anyhow v0.20.1
[INFO] [stderr]   Downloaded sentry-core v0.20.1
[INFO] [stderr]   Downloaded sentry-backtrace v0.20.1
[INFO] [stderr]   Downloaded sentry-types v0.20.1
[INFO] [stderr]   Downloaded sentry-panic v0.20.1
[INFO] [stderr]   Downloaded spa v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64d53e112c5f754764dba77607d98aa90b3039d0a3f22ed09cf02692e5d3c777
[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" "64d53e112c5f754764dba77607d98aa90b3039d0a3f22ed09cf02692e5d3c777", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64d53e112c5f754764dba77607d98aa90b3039d0a3f22ed09cf02692e5d3c777", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64d53e112c5f754764dba77607d98aa90b3039d0a3f22ed09cf02692e5d3c777", kill_on_drop: false }`
[INFO] [stdout] 64d53e112c5f754764dba77607d98aa90b3039d0a3f22ed09cf02692e5d3c777
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a52d57257d84ea489af175df4ae556327bb297bbb3e38352b970a7fb0e54fffa
[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" "a52d57257d84ea489af175df4ae556327bb297bbb3e38352b970a7fb0e54fffa", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
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[INFO] [stderr]    Compiling unicode-xid v0.2.1
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[INFO] [stderr]    Compiling cc v1.0.60
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[INFO] [stderr]    Compiling pkg-config v0.3.18
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[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]     Checking fastrand v1.3.5
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking openssl-probe v0.1.2
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[INFO] [stderr]    Compiling openssl-src v111.11.0+1.1.1h
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
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[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking lock_api v0.4.1
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[INFO] [stderr]     Checking walkdir v2.3.1
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[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
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[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]     Checking async-channel v1.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling libz-sys v1.1.2
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[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking addr2line v0.13.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]     Checking polling v1.1.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
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[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking dns-parser v0.8.0
[INFO] [stderr]     Checking quote v1.0.7
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[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling sentry-contexts v0.20.1
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-cipher v0.7.1
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[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking aead v0.3.2
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking async-executor v1.3.0
[INFO] [stderr]     Checking async-io v1.1.3
[INFO] [stderr]     Checking blocking v1.0.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking syn v1.0.41
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking atoi v0.3.2
[INFO] [stderr]     Checking rhai v0.18.3
[INFO] [stderr]     Checking sized-chunks v0.6.2
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]     Checking aes-soft v0.4.0
[INFO] [stderr]     Checking polyval v0.4.0
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking byte-pool v0.2.2
[INFO] [stderr]     Checking sqlformat v0.1.1
[INFO] [stderr]     Checking async-global-executor v1.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking aes v0.4.0
[INFO] [stderr]     Checking hkdf v0.9.0
[INFO] [stderr]     Checking ghash v0.3.0
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking aes-gcm v0.6.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking nalgebra v0.19.0
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.44/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-mut"' -C metadata=41c0be3d626feb7b -C extra-filename=-41c0be3d626feb7b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-2620285b523fb0bf.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-a2e1ca2a1b90250d.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-5ef45b28e7fc52f2.rmeta --cap-lints allow --cap-lints=forbid --cfg syn_can_match_trailing_dollar --cfg syn_can_use_thread_id --cfg syn_can_use_associated_constants --cfg syn_can_call_macro_by_path` (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" "a52d57257d84ea489af175df4ae556327bb297bbb3e38352b970a7fb0e54fffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a52d57257d84ea489af175df4ae556327bb297bbb3e38352b970a7fb0e54fffa", kill_on_drop: false }`
[INFO] [stdout] a52d57257d84ea489af175df4ae556327bb297bbb3e38352b970a7fb0e54fffa