[INFO] fetching crate hncat 0.1.3...
[INFO] checking hncat-0.1.3 against master#9a42c6509d399fd205917ebce474b31315c5d3e9 for pr-97427
[INFO] extracting crate hncat 0.1.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate hncat 0.1.3 on toolchain 9a42c6509d399fd205917ebce474b31315c5d3e9
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hncat 0.1.3
[INFO] finished tweaking crates.io crate hncat 0.1.3
[INFO] tweaked toml for crates.io crate hncat 0.1.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate hncat 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe27b8d511cee6b8b10c86b2cb8f13d6d92b86f68129a1d6bd9ada5b3f25546a
[INFO] running `Command { std: "docker" "start" "-a" "fe27b8d511cee6b8b10c86b2cb8f13d6d92b86f68129a1d6bd9ada5b3f25546a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe27b8d511cee6b8b10c86b2cb8f13d6d92b86f68129a1d6bd9ada5b3f25546a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe27b8d511cee6b8b10c86b2cb8f13d6d92b86f68129a1d6bd9ada5b3f25546a", kill_on_drop: false }`
[INFO] [stdout] fe27b8d511cee6b8b10c86b2cb8f13d6d92b86f68129a1d6bd9ada5b3f25546a
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b2c9d23f79be6015f5ef1c325a7b01b57579479f3fe97641a45b7ea1c4848d6
[INFO] running `Command { std: "docker" "start" "-a" "6b2c9d23f79be6015f5ef1c325a7b01b57579479f3fe97641a45b7ea1c4848d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.1
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking httpdate v1.0.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking ipnet v2.3.0
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking alloc-stdlib v0.2.1
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.0
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking brotli-decompressor v2.3.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking http v0.2.4
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr] error: could not compile `proc-macro2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name proc_macro2 --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-1.0.26/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="default"' --cfg 'feature="proc-macro"' -C metadata=eed4dd76d1b9bb4b -C extra-filename=-eed4dd76d1b9bb4b --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.rmeta --cap-lints allow --cap-lints=forbid --cfg lexerror_display --cfg hygiene --cfg use_proc_macro --cfg wrap_proc_macro --cfg proc_macro_span` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6b2c9d23f79be6015f5ef1c325a7b01b57579479f3fe97641a45b7ea1c4848d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b2c9d23f79be6015f5ef1c325a7b01b57579479f3fe97641a45b7ea1c4848d6", kill_on_drop: false }`
[INFO] [stdout] 6b2c9d23f79be6015f5ef1c325a7b01b57579479f3fe97641a45b7ea1c4848d6