[INFO] updating cached repository huangqian/rust-in-action
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/huangqian/rust-in-action
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/huangqian/rust-in-action" "work/ex/clippy-test-run/sources/stable/gh/huangqian/rust-in-action"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/huangqian/rust-in-action'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/huangqian/rust-in-action" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/huangqian/rust-in-action"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/huangqian/rust-in-action'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a1b21944716a10fe3343078e0eee06bd7f74b4be
[INFO] sha for GitHub repo huangqian/rust-in-action: a1b21944716a10fe3343078e0eee06bd7f74b4be
[INFO] validating manifest of huangqian/rust-in-action on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of huangqian/rust-in-action on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing huangqian/rust-in-action
[INFO] removed 0 missing examples
[INFO] finished frobbing huangqian/rust-in-action
[INFO] frobbed toml for huangqian/rust-in-action written to work/ex/clippy-test-run/sources/stable/gh/huangqian/rust-in-action/Cargo.toml
[INFO] started frobbing huangqian/rust-in-action
[INFO] removed 0 missing examples
[INFO] finished frobbing huangqian/rust-in-action
[INFO] frobbed toml for huangqian/rust-in-action written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/huangqian/rust-in-action/Cargo.toml
[INFO] crate huangqian/rust-in-action has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting huangqian/rust-in-action against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/huangqian/rust-in-action:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dc38f6e3221d0df472947c73a99da093bbae770911c9bfc6080d57ba85d08582
[INFO] running `"docker" "start" "-a" "dc38f6e3221d0df472947c73a99da093bbae770911c9bfc6080d57ba85d08582"`
[INFO] [stderr]    Compiling redis v0.9.1
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking twox-hash v1.1.1
[INFO] [stderr]     Checking checked v0.5.0
[INFO] [stderr]     Checking atoi v0.2.3
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking combine v3.5.2
[INFO] [stderr]     Checking regex v1.0.6
[INFO] [stderr]     Checking tokio-reactor v0.1.5
[INFO] [stderr]     Checking tokio-tcp v0.1.1
[INFO] [stderr]     Checking mysql_common v0.9.2
[INFO] [stderr]     Checking mysql v14.1.1
[INFO] [stderr]     Checking rust-in-action v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> examples/references.rs:19:24
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn calculate_length(s: &String) -> usize {
[INFO] [stderr]    |                        ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s2`
[INFO] [stderr]  --> examples/ownership.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let s2 = s1;
[INFO] [stderr]   |         ^^ help: consider using `_s2` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f2`
[INFO] [stderr]   --> examples/copy.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let f2 = f1;
[INFO] [stderr]    |         ^^ help: consider using `_f2` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user1`
[INFO] [stderr]   --> src/main.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let user1 = User{
[INFO] [stderr]    |         ^^^^^ help: consider using `_user1` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]   --> src/main.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | struct User{
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]  --> examples/print-format.rs:3:24
[INFO] [stderr]   |
[INFO] [stderr] 3 |     println!("{},{}!", "hello", "format");
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::print_literal)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]  --> examples/print-format.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 |     println!("{},{}!", "hello", "format");
[INFO] [stderr]   |                                 ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]  --> examples/print-format.rs:4:25
[INFO] [stderr]   |
[INFO] [stderr] 4 |     println!("{} days", 31);
[INFO] [stderr]   |                         ^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]  --> examples/print-format.rs:6:52
[INFO] [stderr]   |
[INFO] [stderr] 6 |     println!("{0}, this is {1}. {1}, this is {0}", "Alice", "Bob")
[INFO] [stderr]   |                                                    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr] warning: literal with an empty format string
[INFO] [stderr]  --> examples/print-format.rs:6:61
[INFO] [stderr]   |
[INFO] [stderr] 6 |     println!("{0}, this is {1}. {1}, this is {0}", "Alice", "Bob")
[INFO] [stderr]   |                                                             ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_literal
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `struct_example`
[INFO] [stderr]   --> src/main.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn struct_example(){
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]   --> examples/array.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |         print!("\n")
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `IpAddrKind`
[INFO] [stderr]  --> examples/enums.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | enum IpAddrKind{
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> examples/slices.rs:17:18
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn first_word(s: &String) -> usize{
[INFO] [stderr]    |                  ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `one`
[INFO] [stderr]   --> examples/match.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let one = increment(None);
[INFO] [stderr]    |         ^^^ help: consider using `_one` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Alabama`
[INFO] [stderr]   --> examples/match.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Alabama,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nickel`
[INFO] [stderr]   --> examples/match.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Nickel,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Dime`
[INFO] [stderr]   --> examples/match.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Dime,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `black`
[INFO] [stderr]   --> examples/structs.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let black = Color(0, 0, 0);
[INFO] [stderr]    |         ^^^^^ help: consider using `_black` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `origin`
[INFO] [stderr]   --> examples/structs.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let origin = Point(0, 0, 0);
[INFO] [stderr]    |         ^^^^^^ help: consider using `_origin` instead
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `can_hold`
[INFO] [stderr]   --> examples/structs.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn can_hold(&self, other: &Rectangle) -> bool{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> examples/functions.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     return n + m;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `n + m`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] error: equal expressions as operands to `==`
[INFO] [stderr]   --> examples/control-flow.rs:20:18
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let val = if 16 % 4 == 0 {
[INFO] [stderr]    |                  ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::eq_op)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eq_op
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust-in-action`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> examples/mysql.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user1`
[INFO] [stderr]   --> src/main.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let user1 = User{
[INFO] [stderr]    |         ^^^^^ help: consider using `_user1` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]   --> src/main.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | struct User{
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `struct_example`
[INFO] [stderr]   --> src/main.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn struct_example(){
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `while_case`
[INFO] [stderr]   --> examples/loop.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn while_case(){
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `while_demo_2`
[INFO] [stderr]   --> examples/loop.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn while_demo_2(){
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> examples/loop.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         number = number -1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: replace it with: `number -= 1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: this let-binding has unit value. Consider omitting `let _ =`
[INFO] [stderr]   --> examples/redis.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let _ : () = try!(con.set("my_key", 42));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_unit_value)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_unit_value
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "dc38f6e3221d0df472947c73a99da093bbae770911c9bfc6080d57ba85d08582"`
[INFO] running `"docker" "rm" "-f" "dc38f6e3221d0df472947c73a99da093bbae770911c9bfc6080d57ba85d08582"`
[INFO] [stdout] dc38f6e3221d0df472947c73a99da093bbae770911c9bfc6080d57ba85d08582