[INFO] fetching crate peepmatic 0.64.0...
[INFO] testing peepmatic-0.64.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate peepmatic 0.64.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate peepmatic 0.64.0 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 peepmatic 0.64.0
[INFO] finished tweaking crates.io crate peepmatic 0.64.0
[INFO] tweaked toml for crates.io crate peepmatic 0.64.0 written to /workspace/builds/worker-14/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]  Downloading crates ...
[INFO] [stderr]   Downloaded peepmatic-runtime v0.1.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] 812715e814ad8a2ac5ac6c5f23c7a5b01d0c8448e29c29d2fc9d75c111ecd786
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "812715e814ad8a2ac5ac6c5f23c7a5b01d0c8448e29c29d2fc9d75c111ecd786"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling leb128 v0.2.4
[INFO] [stderr]    Compiling z3-sys v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling peepmatic-macro v0.1.0
[INFO] [stderr]    Compiling wast v15.0.0
[INFO] [stderr]    Compiling thiserror v1.0.19
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr] error: could not compile `serde`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.111/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"' --cfg 'feature="derive"' --cfg 'feature="serde_derive"' --cfg 'feature="std"' -C metadata=5398d4946eb4d19d -C extra-filename=-5398d4946eb4d19d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-ce094f20a2ba08be.so --cap-lints allow --cap-lints=warn --cfg ops_bound --cfg core_reverse --cfg de_boxed_c_str --cfg de_boxed_path --cfg de_rc_dst --cfg core_duration --cfg integer128 --cfg range_inclusive --cfg num_nonzero --cfg core_try_from --cfg num_nonzero_signed --cfg std_atomic64 --cfg std_atomic` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "812715e814ad8a2ac5ac6c5f23c7a5b01d0c8448e29c29d2fc9d75c111ecd786"`
[INFO] running `"docker" "rm" "-f" "812715e814ad8a2ac5ac6c5f23c7a5b01d0c8448e29c29d2fc9d75c111ecd786"`
[INFO] [stdout] 812715e814ad8a2ac5ac6c5f23c7a5b01d0c8448e29c29d2fc9d75c111ecd786