[INFO] updating cached repository EdenCao/rust_learning
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/EdenCao/rust_learning
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/EdenCao/rust_learning" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/EdenCao/rust_learning"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/EdenCao/rust_learning'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/EdenCao/rust_learning" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/EdenCao/rust_learning"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/EdenCao/rust_learning'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3b85aa524f292dd7b9939ed7d5de8b6456618f9f
[INFO] sha for GitHub repo EdenCao/rust_learning: 3b85aa524f292dd7b9939ed7d5de8b6456618f9f
[INFO] validating manifest of EdenCao/rust_learning on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of EdenCao/rust_learning on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing EdenCao/rust_learning
[INFO] finished frobbing EdenCao/rust_learning
[INFO] frobbed toml for EdenCao/rust_learning written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/EdenCao/rust_learning/Cargo.toml
[INFO] started frobbing EdenCao/rust_learning
[INFO] finished frobbing EdenCao/rust_learning
[INFO] frobbed toml for EdenCao/rust_learning written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/EdenCao/rust_learning/Cargo.toml
[INFO] crate EdenCao/rust_learning already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking EdenCao/rust_learning against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-0/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/EdenCao/rust_learning:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1edb9a2db349b45a722f0e1ecbf6a32007148cfb1ee5446c669deb1b74ec33c4
[INFO] running `"docker" "start" "-a" "1edb9a2db349b45a722f0e1ecbf6a32007148cfb1ee5446c669deb1b74ec33c4"`
[INFO] [stderr]     Checking rust_learning v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `refcall`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/refcall.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `rust_learning`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `six`
[INFO] [stderr]   --> src/enum.rs:20:7
[INFO] [stderr]    |
[INFO] [stderr] 20 |   let six = IpAddrKind::V6;
[INFO] [stderr]    |       ^^^ help: consider prefixing with an underscore: `_six`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `home`
[INFO] [stderr]   --> src/enum.rs:27:7
[INFO] [stderr]    |
[INFO] [stderr] 27 |   let home = IpAddr {
[INFO] [stderr]    |       ^^^^ help: consider prefixing with an underscore: `_home`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op_type`
[INFO] [stderr]   --> src/enum.rs:35:10
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn route(op_type: IpAddrKind) { }
[INFO] [stderr]    |          ^^^^^^^ help: consider prefixing with an underscore: `_op_type`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `kind`
[INFO] [stderr]   --> src/enum.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   kind: IpAddrKind,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `address`
[INFO] [stderr]   --> src/enum.rs:15:3
[INFO] [stderr]    |
[INFO] [stderr] 15 |   address: String
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/shared_mem.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `post`
[INFO] [stderr]   --> src/blog.rs:30:25
[INFO] [stderr]    |
[INFO] [stderr] 30 |   fn content<'a>(&self, post: &'a Post) -> &'a str {
[INFO] [stderr]    |                         ^^^^ help: consider prefixing with an underscore: `_post`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `integer`
[INFO] [stderr]   --> src/generics.rs:14:7
[INFO] [stderr]    |
[INFO] [stderr] 14 |   let integer = Point {
[INFO] [stderr]    |       ^^^^^^^ help: consider prefixing with an underscore: `_integer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y`
[INFO] [stderr]  --> src/generics.rs:3:3
[INFO] [stderr]   |
[INFO] [stderr] 3 |   y: T
[INFO] [stderr]   |   ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "1edb9a2db349b45a722f0e1ecbf6a32007148cfb1ee5446c669deb1b74ec33c4"`
[INFO] running `"docker" "rm" "-f" "1edb9a2db349b45a722f0e1ecbf6a32007148cfb1ee5446c669deb1b74ec33c4"`
[INFO] [stdout] 1edb9a2db349b45a722f0e1ecbf6a32007148cfb1ee5446c669deb1b74ec33c4