[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 master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigerk%2Fukg" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tigerk/ukg on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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-9/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] fe0f12c7ccf803913bd64b5db8d92238bcc1214444cea885ba6b524ca470b7c2
[INFO] running `"docker" "start" "-a" "fe0f12c7ccf803913bd64b5db8d92238bcc1214444cea885ba6b524ca470b7c2"`
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking tokio-current-thread v0.1.3
[INFO] [stderr]     Checking tokio-timer v0.2.7
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking crossbeam-epoch v0.5.2
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking crossbeam-deque v0.6.1
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking tokio-threadpool v0.1.8
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-uds v0.2.3
[INFO] [stderr]     Checking tokio v0.1.11
[INFO] [stderr]     Checking ukg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/lib.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn new(worker_id: i64, datacenter_id: i64) -> Snowflake {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `generate_id`
[INFO] [stderr]   --> src/lib.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn generate_id(&mut self) -> Result<i64, String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ukg_current_time`
[INFO] [stderr]   --> src/lib.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     fn ukg_current_time() -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ukg_next_millis`
[INFO] [stderr]   --> src/lib.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fn ukg_next_millis(&self, last_timestamp: i64) -> i64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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: 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: unused import: `tokio::io`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use tokio::io;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | #![deny(warnings)]
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: unused import: `tokio::net::TcpStream`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use tokio::net::TcpStream;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[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: unused import: `tokio::io`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use tokio::io;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | #![deny(warnings)]
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: unused import: `tokio::net::TcpStream`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use tokio::net::TcpStream;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unused import: `tokio::prelude`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use tokio::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 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: unused import: `tokio::prelude`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use tokio::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 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" "fe0f12c7ccf803913bd64b5db8d92238bcc1214444cea885ba6b524ca470b7c2"`
[INFO] running `"docker" "rm" "-f" "fe0f12c7ccf803913bd64b5db8d92238bcc1214444cea885ba6b524ca470b7c2"`
[INFO] [stdout] fe0f12c7ccf803913bd64b5db8d92238bcc1214444cea885ba6b524ca470b7c2