[INFO] fetching crate flubber 0.1.0...
[INFO] testing flubber-0.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate flubber 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate flubber 0.1.0 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 flubber 0.1.0
[INFO] finished tweaking crates.io crate flubber 0.1.0
[INFO] tweaked toml for crates.io crate flubber 0.1.0 written to /workspace/builds/worker-7/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] running `"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" "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] 4bcc6c6eb7cfb0ef1d9387fe3f38685b8344e0dfb3d3a0be000540e8e3ad5b59
[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" "4bcc6c6eb7cfb0ef1d9387fe3f38685b8344e0dfb3d3a0be000540e8e3ad5b59"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling arc-swap v0.4.6
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_cbor v0.9.0
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling tokio-signal v0.2.9
[INFO] [stderr]    Compiling tokio-process v0.2.5
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]    Compiling diesel v1.4.4
[INFO] [stderr]    Compiling libremexre v0.1.12
[INFO] [stderr]    Compiling migrations_internals v1.4.1
[INFO] [stderr]    Compiling migrations_macros v1.4.2
[INFO] [stderr]    Compiling diesel_migrations v1.4.0
[INFO] [stderr]    Compiling flubber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no function or associated item named `from_slice` found for struct `serde_cbor::de::StreamDeserializer<'_, _, _>` in the current scope
[INFO] [stderr]   --> src/util/cbor_subprocess.rs:26:42
[INFO] [stderr]    |
[INFO] [stderr] 26 |             let de = StreamDeserializer::from_slice(&self.recv_bytes_queue);
[INFO] [stderr]    |                                          ^^^^^^^^^^ function or associated item not found in `serde_cbor::de::StreamDeserializer<'_, _, _>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `flubber`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4bcc6c6eb7cfb0ef1d9387fe3f38685b8344e0dfb3d3a0be000540e8e3ad5b59"`
[INFO] running `"docker" "rm" "-f" "4bcc6c6eb7cfb0ef1d9387fe3f38685b8344e0dfb3d3a0be000540e8e3ad5b59"`
[INFO] [stdout] 4bcc6c6eb7cfb0ef1d9387fe3f38685b8344e0dfb3d3a0be000540e8e3ad5b59