[INFO] fetching crate gcast-protocol 0.1.5...
[INFO] checking gcast-protocol-0.1.5 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate gcast-protocol 0.1.5 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate gcast-protocol 0.1.5 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate gcast-protocol 0.1.5
[INFO] finished tweaking crates.io crate gcast-protocol 0.1.5
[INFO] tweaked toml for crates.io crate gcast-protocol 0.1.5 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded error-chain v0.6.2
[INFO] [stderr]   Downloaded gcast-wire v0.1.5
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=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" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 672f47bfac64a24e7a9af76f678e466f72f6af0fc9f3a472dcb04ab92303847e
[INFO] running `"docker" "start" "-a" "672f47bfac64a24e7a9af76f678e466f72f6af0fc9f3a472dcb04ab92303847e"`
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling protobuf v1.7.5
[INFO] [stderr]    Compiling gcast-wire v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking uuid v0.3.1
[INFO] [stderr]     Checking json v0.11.15
[INFO] [stderr] error[E0606]: casting `f64` as `isize` is invalid
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/json-0.11.15/src/util/diyfp.rs:245:17
[INFO] [stderr]     |
[INFO] [stderr] 245 |     let mut k = dk as isize;
[INFO] [stderr]     |                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0606`.
[INFO] [stderr] error: could not compile `json`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "672f47bfac64a24e7a9af76f678e466f72f6af0fc9f3a472dcb04ab92303847e"`
[INFO] running `"docker" "rm" "-f" "672f47bfac64a24e7a9af76f678e466f72f6af0fc9f3a472dcb04ab92303847e"`
[INFO] [stdout] 672f47bfac64a24e7a9af76f678e466f72f6af0fc9f3a472dcb04ab92303847e