[INFO] updating cached repository https://github.com/tigerk/ukg
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5df393537022a10632a2ace814f24dd658087f6b
[INFO] checking tigerk/ukg against nightly-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigerk%2Fukg" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tigerk/ukg on toolchain nightly-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tigerk/ukg
[INFO] finished tweaking git repo https://github.com/tigerk/ukg
[INFO] tweaked toml for git repo https://github.com/tigerk/ukg written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tigerk/ukg already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=allow" "-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" "+nightly-2019-10-27" "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] 2de577d55a1bf4d9c5070ce6adedc4107970d69a47ef5d24ecb0e37061f40e73
[INFO] running `"docker" "start" "-a" "2de577d55a1bf4d9c5070ce6adedc4107970d69a47ef5d24ecb0e37061f40e73"`
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.3
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio v0.1.11
[INFO] [stderr]     Checking ukg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: expected `[`, found `#`
[INFO] [stderr]   --> src/main.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     # // `select` completes when the first of the two futures completes. Since
[INFO] [stderr]    |      - expected `[`
[INFO] [stderr] 40 |     # // future::ok() completes immediately, the server won't hang waiting for
[INFO] [stderr]    |     ^ unexpected token
[INFO] [stderr] 
[INFO] [stderr] error: expected `[`, found `#`
[INFO] [stderr]   --> src/main.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     # // `select` completes when the first of the two futures completes. Since
[INFO] [stderr]    |      - expected `[`
[INFO] [stderr] 40 |     # // future::ok() completes immediately, the server won't hang waiting for
[INFO] [stderr]    |     ^ unexpected token
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `TcpListener`
[INFO] [stderr]   --> src/main.rs:24:20
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let listener = TcpListener::bind(&addr).unwrap();
[INFO] [stderr]    |                    ^^^^^^^^^^^ use of undeclared type or module `TcpListener`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `ukg`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `TcpListener`
[INFO] [stderr]   --> src/main.rs:24:20
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let listener = TcpListener::bind(&addr).unwrap();
[INFO] [stderr]    |                    ^^^^^^^^^^^ use of undeclared type or module `TcpListener`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `ukg`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2de577d55a1bf4d9c5070ce6adedc4107970d69a47ef5d24ecb0e37061f40e73"`
[INFO] running `"docker" "rm" "-f" "2de577d55a1bf4d9c5070ce6adedc4107970d69a47ef5d24ecb0e37061f40e73"`
[INFO] [stdout] 2de577d55a1bf4d9c5070ce6adedc4107970d69a47ef5d24ecb0e37061f40e73