[INFO] crate duo 0.1.0-alpha.0 is already in cache
[INFO] testing duo-0.1.0-alpha.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate duo 0.1.0-alpha.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate duo 0.1.0-alpha.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate duo 0.1.0-alpha.0
[INFO] finished tweaking crates.io crate duo 0.1.0-alpha.0
[INFO] tweaked toml for crates.io crate duo 0.1.0-alpha.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "RUSTFLAGS=--cap-lints=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1dc4326afe29113b89a0cfdc9e599246b3a3d434def48c02f5a16e31baa4820d
[INFO] running `"docker" "start" "-a" "1dc4326afe29113b89a0cfdc9e599246b3a3d434def48c02f5a16e31baa4820d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling secp256k1 v0.12.2
[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]    Compiling 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,artifacts --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=864fda89e2c94405 -C extra-filename=-864fda89e2c94405 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern failure=/opt/rustwide/target/debug/deps/libfailure-03593cff0cd6a2e5.rmeta --extern numext_constructor=/opt/rustwide/target/debug/deps/libnumext_constructor-217faf295ac06e74.so --extern numext_fixed_uint=/opt/rustwide/target/debug/deps/libnumext_fixed_uint-f06b8bcf1b39f567.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "1dc4326afe29113b89a0cfdc9e599246b3a3d434def48c02f5a16e31baa4820d"`
[INFO] running `"docker" "rm" "-f" "1dc4326afe29113b89a0cfdc9e599246b3a3d434def48c02f5a16e31baa4820d"`
[INFO] [stdout] 1dc4326afe29113b89a0cfdc9e599246b3a3d434def48c02f5a16e31baa4820d