[INFO] fetching crate trunk 0.10.0...
[INFO] checking trunk-0.10.0 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate trunk 0.10.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate trunk 0.10.0 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trunk 0.10.0
[INFO] finished tweaking crates.io crate trunk 0.10.0
[INFO] tweaked toml for crates.io crate trunk 0.10.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate trunk 0.10.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded route-recognizer v0.2.0
[INFO] [stderr]   Downloaded tide-websockets v0.3.0
[INFO] [stderr]   Downloaded tracing-attributes v0.1.14
[INFO] [stderr]   Downloaded async-io v1.3.1
[INFO] [stderr]   Downloaded signal-hook v0.3.7
[INFO] [stderr]   Downloaded infer v0.2.3
[INFO] [stderr]   Downloaded cookie v0.14.4
[INFO] [stderr]   Downloaded async-attributes v1.1.2
[INFO] [stderr]   Downloaded polling v2.0.2
[INFO] [stderr]   Downloaded http-client v6.3.4
[INFO] [stderr]   Downloaded async-sse v4.1.0
[INFO] [stderr]   Downloaded remove_dir_all v0.6.1
[INFO] [stderr]   Downloaded async-tungstenite v0.10.0
[INFO] [stderr]   Downloaded crypto-mac v0.8.0
[INFO] [stderr]   Downloaded sha-1 v0.9.4
[INFO] [stderr]   Downloaded dashmap v4.0.2
[INFO] [stderr]   Downloaded blake3 v0.3.7
[INFO] [stderr]   Downloaded inotify v0.7.1
[INFO] [stderr]   Downloaded thin-slice v0.1.1
[INFO] [stderr]   Downloaded string_cache_codegen v0.5.1
[INFO] [stderr]   Downloaded markup5ever v0.10.0
[INFO] [stderr]   Downloaded dunce v1.0.1
[INFO] [stderr]   Downloaded cargo_metadata v0.12.3
[INFO] [stderr]   Downloaded new_debug_unreachable v1.0.4
[INFO] [stderr]   Downloaded phf_shared v0.8.0
[INFO] [stderr]   Downloaded cargo-platform v0.1.1
[INFO] [stderr]   Downloaded semver v0.11.0
[INFO] [stderr]   Downloaded ucd-trie v0.1.3
[INFO] [stderr]   Downloaded pest v2.1.3
[INFO] [stderr]   Downloaded difference v2.0.0
[INFO] [stderr]   Downloaded selectors v0.22.0
[INFO] [stderr]   Downloaded html5ever v0.25.1
[INFO] [stderr]   Downloaded console v0.14.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.60
[INFO] [stderr]   Downloaded nb-connect v1.0.3
[INFO] [stderr]   Downloaded syn v1.0.63
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.16
[INFO] [stderr]   Downloaded string_cache v0.8.1
[INFO] [stderr]   Downloaded http-types v2.10.0
[INFO] [stderr]   Downloaded which v4.0.2
[INFO] [stderr]   Downloaded nipper-trunk v0.1.9
[INFO] [stderr]   Downloaded fsevent-sys v2.0.1
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[INFO] [stderr]   Downloaded derive_more v0.99.11
[INFO] [stderr]   Downloaded curl-sys v0.4.41+curl-7.75.0
[INFO] [stderr]   Downloaded simple-mutex v1.1.5
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.6+1.43.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.0
[INFO] [stderr]   Downloaded semver-parser v0.10.2
[INFO] [stderr]   Downloaded nodrop v0.1.14
[INFO] [stderr]   Downloaded inotify-sys v0.1.5
[INFO] [stderr]   Downloaded memoffset v0.6.1
[INFO] [stderr]   Downloaded insta v0.16.1
[INFO] [stderr]   Downloaded envy v0.4.2
[INFO] [stderr]   Downloaded termios v0.3.3
[INFO] [stderr]   Downloaded console v0.11.3
[INFO] [stderr]   Downloaded servo_arc v0.1.1
[INFO] [stderr]   Downloaded cssparser-macros v0.6.0
[INFO] [stderr]   Downloaded dtoa-short v0.3.3
[INFO] [stderr]   Downloaded cssparser v0.27.2
[INFO] [stderr]   Downloaded phf_macros v0.8.0
[INFO] [stderr]   Downloaded phf v0.8.0
[INFO] [stderr]   Downloaded phf_generator v0.8.0
[INFO] [stderr]   Downloaded siphasher v0.3.3
[INFO] [stderr]   Downloaded phf_codegen v0.8.0
[INFO] [stderr]   Downloaded futf v0.1.4
[INFO] [stderr]   Downloaded mac v0.1.1
[INFO] [stderr]   Downloaded tendril v0.4.2
[INFO] [stderr]   Downloaded fsevent v0.4.0
[INFO] [stderr]   Downloaded notify v4.0.15
[INFO] [stderr]   Downloaded mio-extras v2.0.6
[INFO] [stderr]   Downloaded open v1.6.0
[INFO] [stderr]   Downloaded curl v0.4.35
[INFO] [stderr]   Downloaded hmac v0.8.1
[INFO] [stderr]   Downloaded sluice v0.5.4
[INFO] [stderr]   Downloaded sass-rs v0.2.2
[INFO] [stderr]   Downloaded seahash v4.1.0
[INFO] [stderr]   Downloaded surf v2.2.0
[INFO] [stderr]   Downloaded async-dup v1.2.2
[INFO] [stderr]   Downloaded byte-pool v0.2.2
[INFO] [stderr]   Downloaded async-h1 v2.3.2
[INFO] [stderr]   Downloaded async-session v2.0.1
[INFO] [stderr]   Downloaded isahc v0.9.14
[INFO] [stderr]   Downloaded spinning_top v0.2.2
[INFO] [stderr]   Downloaded flume v0.9.2
[INFO] [stderr]   Downloaded async-lock v2.3.0
[INFO] [stderr]   Downloaded async-process v1.0.2
[INFO] [stderr]   Downloaded regex-syntax v0.6.22
[INFO] [stderr]   Downloaded vec-arena v1.0.0
[INFO] [stderr]   Downloaded serde_qs v0.7.2
[INFO] [stderr]   Downloaded tide v0.16.0
[INFO] [stderr]   Downloaded regex v1.4.3
[INFO] [stderr]   Downloaded ctor v0.1.19
[INFO] [stderr]   Downloaded sval v1.0.0-alpha.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 796c6df7672184e46a53c57fe2ae96a5a3250002b3b88401ad2b90a94821f788
[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" "796c6df7672184e46a53c57fe2ae96a5a3250002b3b88401ad2b90a94821f788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "796c6df7672184e46a53c57fe2ae96a5a3250002b3b88401ad2b90a94821f788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "796c6df7672184e46a53c57fe2ae96a5a3250002b3b88401ad2b90a94821f788", kill_on_drop: false }`
[INFO] [stdout] 796c6df7672184e46a53c57fe2ae96a5a3250002b3b88401ad2b90a94821f788
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1489e02dfa54afe62ba8bcd5960e9af49899439e05b4d64c37453d133dcb6d4
[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" "b1489e02dfa54afe62ba8bcd5960e9af49899439e05b4d64c37453d133dcb6d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling curl v0.4.35
[INFO] [stderr]    Compiling isahc v0.9.14
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ucd-trie v0.1.3
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking fs_extra v1.2.0
[INFO] [stderr]     Checking remove_dir_all v0.6.1
[INFO] [stderr]     Checking seahash v4.1.0
[INFO] [stderr]    Compiling standback v0.2.15
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.6+1.43.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling time v0.2.25
[INFO] [stderr]    Compiling cookie v0.14.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling blake3 v0.3.7
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stderr]     Checking simple-mutex v1.1.5
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]    Compiling signal-hook v0.3.7
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking http v0.2.3
[INFO] [stderr]     Checking dtoa-short v0.3.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking sluice v0.5.4
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]     Checking async-dup v1.2.2
[INFO] [stderr]     Checking spinning_top v0.2.2
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling curl-sys v0.4.41+curl-7.75.0
[INFO] [stderr]     Checking cipher v0.2.5
[INFO] [stderr]     Checking universal-hash v0.4.0
[INFO] [stderr]     Checking crypto-mac v0.10.0
[INFO] [stderr]     Checking aead v0.3.2
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking flume v0.9.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking sha2 v0.9.3
[INFO] [stderr]     Checking sha-1 v0.9.4
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]     Checking polyval v0.4.5
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]     Checking aes-soft v0.6.4
[INFO] [stderr]     Checking ctr v0.6.0
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking semver-parser v0.10.2
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking terminal_size v0.1.16
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking ghash v0.3.1
[INFO] [stderr]     Checking hkdf v0.10.0
[INFO] [stderr]     Checking aes v0.6.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking nb-connect v1.0.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking console v0.14.0
[INFO] [stderr]     Checking console v0.11.3
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking byte-pool v0.2.2
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking aes-gcm v0.8.0
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking idna v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]    Compiling sass-sys v0.4.21
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.8.3
[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-1.0.63/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="fold"' --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=6febf12a2e11a662 -C extra-filename=-6febf12a2e11a662 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-68d422dfc8864dc7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cfc781dd86a6c62d.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" "b1489e02dfa54afe62ba8bcd5960e9af49899439e05b4d64c37453d133dcb6d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1489e02dfa54afe62ba8bcd5960e9af49899439e05b4d64c37453d133dcb6d4", kill_on_drop: false }`
[INFO] [stdout] b1489e02dfa54afe62ba8bcd5960e9af49899439e05b4d64c37453d133dcb6d4