[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#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangchen000%2Fsnowflake" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wangchen000/snowflake on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-3-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73632f368e23c1e847d59945697cdd2648da66e37617eee60c6cecb2d99d20aa
[INFO] running `Command { std: "docker" "start" "-a" "73632f368e23c1e847d59945697cdd2648da66e37617eee60c6cecb2d99d20aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73632f368e23c1e847d59945697cdd2648da66e37617eee60c6cecb2d99d20aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73632f368e23c1e847d59945697cdd2648da66e37617eee60c6cecb2d99d20aa", kill_on_drop: false }`
[INFO] [stdout] 73632f368e23c1e847d59945697cdd2648da66e37617eee60c6cecb2d99d20aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 321dfe3f199ba5b1e5d5ae38eb3fcd7451a6ea018aac374cdfb7bd99673dd83a
[INFO] running `Command { std: "docker" "start" "-a" "321dfe3f199ba5b1e5d5ae38eb3fcd7451a6ea018aac374cdfb7bd99673dd83a", 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 `Snowflake` is never constructed
[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 items `kubernetes`, `new`, `generate`, and `get_time` are never used
[INFO] [stdout]   --> src/snowflake.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Snowflake {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn kubernetes() -> Snowflake {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn new(worker_id: i64) -> Snowflake {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn generate(&mut self) -> Option<i64> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn get_time(&self) -> i64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_ip` is never used
[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: associated function `new` is never used
[INFO] [stdout]   --> src/snowflake.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl Snowflake {
[INFO] [stdout]    | -------------- associated function in this implementation
[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] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "321dfe3f199ba5b1e5d5ae38eb3fcd7451a6ea018aac374cdfb7bd99673dd83a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "321dfe3f199ba5b1e5d5ae38eb3fcd7451a6ea018aac374cdfb7bd99673dd83a", kill_on_drop: false }`
[INFO] [stdout] 321dfe3f199ba5b1e5d5ae38eb3fcd7451a6ea018aac374cdfb7bd99673dd83a
[INFO] checking wangchen000/snowflake against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwangchen000%2Fsnowflake" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wangchen000/snowflake on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-3-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce52091bfb1eb8760b0d5eecf29dfb9e800d8cd95943ea2ad46b981c14bc8e13
[INFO] running `Command { std: "docker" "start" "-a" "ce52091bfb1eb8760b0d5eecf29dfb9e800d8cd95943ea2ad46b981c14bc8e13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce52091bfb1eb8760b0d5eecf29dfb9e800d8cd95943ea2ad46b981c14bc8e13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce52091bfb1eb8760b0d5eecf29dfb9e800d8cd95943ea2ad46b981c14bc8e13", kill_on_drop: false }`
[INFO] [stdout] ce52091bfb1eb8760b0d5eecf29dfb9e800d8cd95943ea2ad46b981c14bc8e13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b225834b8903e61eb93769b5d03a9390c29addedeeb509f37e11769732abe9e1
[INFO] running `Command { std: "docker" "start" "-a" "b225834b8903e61eb93769b5d03a9390c29addedeeb509f37e11769732abe9e1", 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] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/snowflake.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 | /     match socket.local_addr() {
[INFO] [stdout] 78 | |         Ok(addr) => return Some(addr.ip().to_string()),
[INFO] [stdout] 79 | |         Err(_) => return None,
[INFO] [stdout] 80 | |     };
[INFO] [stdout]    | |_____^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/snowflake.rs:77:5
[INFO] [stdout]    |
[INFO] [stdout] 77 | /     match socket.local_addr() {
[INFO] [stdout] 78 | |         Ok(addr) => return Some(addr.ip().to_string()),
[INFO] [stdout] 79 | |         Err(_) => return None,
[INFO] [stdout] 80 | |     };
[INFO] [stdout]    | |_____^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `snowflake` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `snowflake` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b225834b8903e61eb93769b5d03a9390c29addedeeb509f37e11769732abe9e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b225834b8903e61eb93769b5d03a9390c29addedeeb509f37e11769732abe9e1", kill_on_drop: false }`
[INFO] [stdout] b225834b8903e61eb93769b5d03a9390c29addedeeb509f37e11769732abe9e1