[INFO] fetching crate nature_db 0.15.0...
[INFO] checking nature_db-0.15.0 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate nature_db 0.15.0 into /workspace/builds/worker-110/source
[INFO] validating manifest of crates.io crate nature_db 0.15.0 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nature_db 0.15.0
[INFO] finished tweaking crates.io crate nature_db 0.15.0
[INFO] tweaked toml for crates.io crate nature_db 0.15.0 written to /workspace/builds/worker-110/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afafb5680932410bea6390296d83977f00b09067c8cee6e7d770c2fb6da0cfe4
[INFO] running `Command { std: "docker" "start" "-a" "afafb5680932410bea6390296d83977f00b09067c8cee6e7d770c2fb6da0cfe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afafb5680932410bea6390296d83977f00b09067c8cee6e7d770c2fb6da0cfe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afafb5680932410bea6390296d83977f00b09067c8cee6e7d770c2fb6da0cfe4", kill_on_drop: false }`
[INFO] [stdout] afafb5680932410bea6390296d83977f00b09067c8cee6e7d770c2fb6da0cfe4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b16bb0604f6ceb973672fd4e0b7777024a04f47c6ba1f6eeffc4637d7cb7c79
[INFO] running `Command { std: "docker" "start" "-a" "0b16bb0604f6ceb973672fd4e0b7777024a04f47c6ba1f6eeffc4637d7cb7c79", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking futures-io v0.3.16
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.28
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking copyless v0.1.5
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking mio-named-pipes v0.1.7
[INFO] [stderr]     Checking lru_time_cache v0.10.0
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking tracing-core v0.1.19
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking object v0.26.1
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]     Checking http v0.2.4
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr] error: could not compile `serde_json`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_json --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.66/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=89c9f14976d4829a -C extra-filename=-89c9f14976d4829a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern itoa=/opt/rustwide/target/debug/deps/libitoa-7000b39e761ed1f5.rmeta --extern ryu=/opt/rustwide/target/debug/deps/libryu-9209e0ba8552ce8b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5b565d8b838b6a9e.rmeta --cap-lints allow --cap-lints=forbid --cfg limb_width_64` (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" "0b16bb0604f6ceb973672fd4e0b7777024a04f47c6ba1f6eeffc4637d7cb7c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b16bb0604f6ceb973672fd4e0b7777024a04f47c6ba1f6eeffc4637d7cb7c79", kill_on_drop: false }`
[INFO] [stdout] 0b16bb0604f6ceb973672fd4e0b7777024a04f47c6ba1f6eeffc4637d7cb7c79