[INFO] updating cached repository https://github.com/wangchen000/snowflake
[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] 019277e70e2cebc2bbceed27de696ece1dbbff18
[INFO] checking wangchen000/snowflake against try#8a749131e7beb72f6edacefd2bdcbed3d67b2112 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangchen000%2Fsnowflake" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wangchen000/snowflake on toolchain 8a749131e7beb72f6edacefd2bdcbed3d67b2112
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/wangchen000/snowflake
[INFO] finished tweaking git repo https://github.com/wangchen000/snowflake
[INFO] tweaked toml for git repo https://github.com/wangchen000/snowflake written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/wangchen000/snowflake already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "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] b091750212fb685cf7daab74e72cc628e5ad43c7cad3f768bdb227fa269c23ab
[INFO] running `"docker" "start" "-a" "b091750212fb685cf7daab74e72cc628e5ad43c7cad3f768bdb227fa269c23ab"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking snowflake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `Snowflake`
[INFO] [stderr]  --> src/snowflake.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Snowflake {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `kubernetes`
[INFO] [stderr]   --> src/snowflake.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn kubernetes() -> Snowflake {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/snowflake.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn new(worker_id: i64) -> Snowflake {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `generate`
[INFO] [stderr]   --> src/snowflake.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn generate(&mut self) -> Option<i64> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_time`
[INFO] [stderr]   --> src/snowflake.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn get_time(&self) -> i64 {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_ip`
[INFO] [stderr]   --> src/snowflake.rs:66:4
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn get_ip() -> Option<String> {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/snowflake.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn new(worker_id: i64) -> Snowflake {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.77s
[INFO] running `"docker" "inspect" "b091750212fb685cf7daab74e72cc628e5ad43c7cad3f768bdb227fa269c23ab"`
[INFO] running `"docker" "rm" "-f" "b091750212fb685cf7daab74e72cc628e5ad43c7cad3f768bdb227fa269c23ab"`
[INFO] [stdout] b091750212fb685cf7daab74e72cc628e5ad43c7cad3f768bdb227fa269c23ab