[INFO] crate hashlib 0.1.0 is already in cache
[INFO] documenting hashlib-0.1.0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate hashlib 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate hashlib 0.1.0 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hashlib 0.1.0
[INFO] finished tweaking crates.io crate hashlib 0.1.0
[INFO] tweaked toml for crates.io crate hashlib 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c9702bbfa6589010d5c74df8a4bfc075619d0f1468c87f2b846a396f59cca80
[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" "9c9702bbfa6589010d5c74df8a4bfc075619d0f1468c87f2b846a396f59cca80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c9702bbfa6589010d5c74df8a4bfc075619d0f1468c87f2b846a396f59cca80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c9702bbfa6589010d5c74df8a4bfc075619d0f1468c87f2b846a396f59cca80", kill_on_drop: false }`
[INFO] [stdout] 9c9702bbfa6589010d5c74df8a4bfc075619d0f1468c87f2b846a396f59cca80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10d3be9045830ea81df09a8a67e5885ffcfb93c5c941ad601faaa9e7a21c34a7
[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" "10d3be9045830ea81df09a8a67e5885ffcfb93c5c941ad601faaa9e7a21c34a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking hashlib-prelude v0.1.0
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking tiny-keccak v1.4.4
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking backtrace v0.3.49
[INFO] [stderr]     Checking blake2b_simd v0.4.1
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]    Compiling numext-constructor v0.1.4
[INFO] [stderr]    Compiling numext-fixed-uint-core v0.1.4
[INFO] [stderr]    Compiling numext-fixed-uint-hack v0.1.4
[INFO] [stderr]    Compiling numext-fixed-uint v0.1.4
[INFO] [stderr]     Checking numext-fixed-hash-core v0.1.4
[INFO] [stderr] error: could not compile `numext-fixed-hash-core`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name numext_fixed_hash_core --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/numext-fixed-hash-core-0.1.4/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=a45a1c247cb93167 -C extra-filename=-a45a1c247cb93167 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern failure=/opt/rustwide/target/debug/deps/libfailure-b856a2d38a47a472.rmeta --extern numext_constructor=/opt/rustwide/target/debug/deps/libnumext_constructor-9c8f1e0dec498d42.so --extern numext_fixed_uint=/opt/rustwide/target/debug/deps/libnumext_fixed_uint-42b7863da8451b7b.rmeta --cap-lints allow` (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" "10d3be9045830ea81df09a8a67e5885ffcfb93c5c941ad601faaa9e7a21c34a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10d3be9045830ea81df09a8a67e5885ffcfb93c5c941ad601faaa9e7a21c34a7", kill_on_drop: false }`
[INFO] [stdout] 10d3be9045830ea81df09a8a67e5885ffcfb93c5c941ad601faaa9e7a21c34a7