[INFO] cloning repository https://github.com/wangchen000/snowflake
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wangchen000/snowflake" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangchen000%2Fsnowflake", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangchen000%2Fsnowflake'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 019277e70e2cebc2bbceed27de696ece1dbbff18
[INFO] checking wangchen000/snowflake against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangchen000%2Fsnowflake" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wangchen000/snowflake on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-4/source/Cargo.toml
[INFO] crate git repo https://github.com/wangchen000/snowflake already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a747045d5a023db067791a9cc23b33dbd7228d75bf21bd654e90523dc1ddb1b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6a747045d5a023db067791a9cc23b33dbd7228d75bf21bd654e90523dc1ddb1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a747045d5a023db067791a9cc23b33dbd7228d75bf21bd654e90523dc1ddb1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a747045d5a023db067791a9cc23b33dbd7228d75bf21bd654e90523dc1ddb1b", kill_on_drop: false }`
[INFO] [stdout] 6a747045d5a023db067791a9cc23b33dbd7228d75bf21bd654e90523dc1ddb1b
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f9f379dc3c6f7aba785c8a816dd84aa044c2a16f64134eb18a67dfedbcdb82b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5f9f379dc3c6f7aba785c8a816dd84aa044c2a16f64134eb18a67dfedbcdb82b", kill_on_drop: false }`
[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] [stdout] warning: struct is never constructed: `Snowflake`
[INFO] [stdout]  --> src/snowflake.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Snowflake {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `kubernetes`
[INFO] [stdout]   --> src/snowflake.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn kubernetes() -> Snowflake {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/snowflake.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn new(worker_id: i64) -> Snowflake {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `generate`
[INFO] [stdout]   --> src/snowflake.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn generate(&mut self) -> Option<i64> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_time`
[INFO] [stdout]   --> src/snowflake.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn get_time(&self) -> i64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_ip`
[INFO] [stdout]   --> src/snowflake.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn get_ip() -> Option<String> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/snowflake.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn new(worker_id: i64) -> Snowflake {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.36s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5f9f379dc3c6f7aba785c8a816dd84aa044c2a16f64134eb18a67dfedbcdb82b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f9f379dc3c6f7aba785c8a816dd84aa044c2a16f64134eb18a67dfedbcdb82b", kill_on_drop: false }`
[INFO] [stdout] 5f9f379dc3c6f7aba785c8a816dd84aa044c2a16f64134eb18a67dfedbcdb82b