Dec 05 15:44:49.667 INFO testing madeinfree/hello-rust against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 05 15:44:49.667 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 15:44:50.230 INFO [stdout] 40801a68ff8a7c85cf1dbd69b83119f157a268bf008835ffc9ec1895c6e12030
Dec 05 15:44:50.232 INFO running `"docker" "start" "-a" "40801a68ff8a7c85cf1dbd69b83119f157a268bf008835ffc9ec1895c6e12030"`
Dec 05 15:44:51.671 INFO [stderr] usermod: no changes
Dec 05 15:44:51.776 INFO [stderr]    Compiling hello v0.1.0 (/source)
Dec 05 15:44:52.151 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 05 15:44:52.151 INFO [stderr]    --> src/main.rs:567:17
Dec 05 15:44:52.156 INFO [stderr]     |
Dec 05 15:44:52.156 INFO [stderr] 567 |   for number in (1..5) {
Dec 05 15:44:52.156 INFO [stderr]     |                 ^^^^^^ help: remove these parentheses
Dec 05 15:44:52.156 INFO [stderr]     |
Dec 05 15:44:52.156 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 05 15:44:52.156 INFO [stderr] 
Dec 05 15:44:52.255 INFO [stderr] warning: unreachable statement
Dec 05 15:44:52.255 INFO [stderr]    --> src/main.rs:254:3
Dec 05 15:44:52.255 INFO [stderr]     |
Dec 05 15:44:52.255 INFO [stderr] 254 |   println!("{}", "Run here?"); // Not run
Dec 05 15:44:52.255 INFO [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.255 INFO [stderr]     |
Dec 05 15:44:52.276 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 05 15:44:52.276 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 05 15:44:52.276 INFO [stderr] 
Dec 05 15:44:52.322 INFO [stderr] warning: unused variable: `f`
Dec 05 15:44:52.322 INFO [stderr]    --> src/main.rs:188:7
Dec 05 15:44:52.322 INFO [stderr]     |
Dec 05 15:44:52.322 INFO [stderr] 188 |   let f = match f {
Dec 05 15:44:52.322 INFO [stderr]     |       ^ help: consider using `_f` instead
Dec 05 15:44:52.322 INFO [stderr]     |
Dec 05 15:44:52.322 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 05 15:44:52.322 INFO [stderr] 
Dec 05 15:44:52.322 INFO [stderr] warning: unused variable: `row`
Dec 05 15:44:52.322 INFO [stderr]    --> src/main.rs:301:7
Dec 05 15:44:52.322 INFO [stderr]     |
Dec 05 15:44:52.322 INFO [stderr] 301 |   let row = vec![
Dec 05 15:44:52.322 INFO [stderr]     |       ^^^ help: consider using `_row` instead
Dec 05 15:44:52.322 INFO [stderr] 
Dec 05 15:44:52.322 INFO [stderr] warning: unused variable: `six`
Dec 05 15:44:52.322 INFO [stderr]    --> src/main.rs:358:7
Dec 05 15:44:52.322 INFO [stderr]     |
Dec 05 15:44:52.322 INFO [stderr] 358 |   let six = plus_one(five);
Dec 05 15:44:52.322 INFO [stderr]     |       ^^^ help: consider using `_six` instead
Dec 05 15:44:52.322 INFO [stderr] 
Dec 05 15:44:52.323 INFO [stderr] warning: unused variable: `none`
Dec 05 15:44:52.323 INFO [stderr]    --> src/main.rs:359:7
Dec 05 15:44:52.323 INFO [stderr]     |
Dec 05 15:44:52.323 INFO [stderr] 359 |   let none = plus_one(None);
Dec 05 15:44:52.323 INFO [stderr]     |       ^^^^ help: consider using `_none` instead
Dec 05 15:44:52.323 INFO [stderr] 
Dec 05 15:44:52.323 INFO [stderr] warning: unused variable: `home`
Dec 05 15:44:52.323 INFO [stderr]    --> src/main.rs:380:7
Dec 05 15:44:52.323 INFO [stderr]     |
Dec 05 15:44:52.323 INFO [stderr] 380 |   let home = IpAddr {
Dec 05 15:44:52.323 INFO [stderr]     |       ^^^^ help: consider using `_home` instead
Dec 05 15:44:52.323 INFO [stderr] 
Dec 05 15:44:52.328 INFO [stderr] warning: unused variable: `r1`
Dec 05 15:44:52.328 INFO [stderr]    --> src/main.rs:498:9
Dec 05 15:44:52.328 INFO [stderr]     |
Dec 05 15:44:52.328 INFO [stderr] 498 |     let r1 = &mut s;
Dec 05 15:44:52.328 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Dec 05 15:44:52.328 INFO [stderr] 
Dec 05 15:44:52.328 INFO [stderr] warning: unused variable: `r2`
Dec 05 15:44:52.328 INFO [stderr]    --> src/main.rs:500:7
Dec 05 15:44:52.328 INFO [stderr]     |
Dec 05 15:44:52.328 INFO [stderr] 500 |   let r2 = &mut s;
Dec 05 15:44:52.328 INFO [stderr]     |       ^^ help: consider using `_r2` instead
Dec 05 15:44:52.328 INFO [stderr] 
Dec 05 15:44:52.384 INFO [stderr] warning: function is never used: `longest`
Dec 05 15:44:52.384 INFO [stderr]   --> src/main.rs:53:3
Dec 05 15:44:52.384 INFO [stderr]    |
Dec 05 15:44:52.384 INFO [stderr] 53 |   fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
Dec 05 15:44:52.384 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.384 INFO [stderr]    |
Dec 05 15:44:52.384 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 15:44:52.384 INFO [stderr] 
Dec 05 15:44:52.384 INFO [stderr] warning: function is never used: `sample_impl_trait_type`
Dec 05 15:44:52.384 INFO [stderr]   --> src/main.rs:94:1
Dec 05 15:44:52.384 INFO [stderr]    |
Dec 05 15:44:52.384 INFO [stderr] 94 | fn sample_impl_trait_type() {
Dec 05 15:44:52.384 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.384 INFO [stderr] 
Dec 05 15:44:52.384 INFO [stderr] warning: function is never used: `sample_generic_types`
Dec 05 15:44:52.384 INFO [stderr]    --> src/main.rs:151:1
Dec 05 15:44:52.384 INFO [stderr]     |
Dec 05 15:44:52.384 INFO [stderr] 151 | fn sample_generic_types() {
Dec 05 15:44:52.384 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.384 INFO [stderr] 
Dec 05 15:44:52.384 INFO [stderr] warning: function is never used: `sample_error_result`
Dec 05 15:44:52.384 INFO [stderr]    --> src/main.rs:177:1
Dec 05 15:44:52.384 INFO [stderr]     |
Dec 05 15:44:52.384 INFO [stderr] 177 | fn sample_error_result() {
Dec 05 15:44:52.384 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.384 INFO [stderr] 
Dec 05 15:44:52.384 INFO [stderr] warning: function is never used: `sample_error_panic`
Dec 05 15:44:52.384 INFO [stderr]    --> src/main.rs:250:1
Dec 05 15:44:52.384 INFO [stderr]     |
Dec 05 15:44:52.384 INFO [stderr] 250 | fn sample_error_panic() {
Dec 05 15:44:52.384 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.385 INFO [stderr] 
Dec 05 15:44:52.385 INFO [stderr] warning: function is never used: `sample_hash_map`
Dec 05 15:44:52.385 INFO [stderr]    --> src/main.rs:257:1
Dec 05 15:44:52.385 INFO [stderr]     |
Dec 05 15:44:52.385 INFO [stderr] 257 | fn sample_hash_map() {
Dec 05 15:44:52.385 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.385 INFO [stderr] 
Dec 05 15:44:52.385 INFO [stderr] warning: function is never used: `sample_vector`
Dec 05 15:44:52.385 INFO [stderr]    --> src/main.rs:285:1
Dec 05 15:44:52.385 INFO [stderr]     |
Dec 05 15:44:52.385 INFO [stderr] 285 | fn sample_vector() {
Dec 05 15:44:52.385 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.385 INFO [stderr] 
Dec 05 15:44:52.385 INFO [stderr] warning: function is never used: `sample_if_let`
Dec 05 15:44:52.385 INFO [stderr]    --> src/main.rs:309:1
Dec 05 15:44:52.385 INFO [stderr]     |
Dec 05 15:44:52.385 INFO [stderr] 309 | fn sample_if_let() {
Dec 05 15:44:52.385 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.385 INFO [stderr] 
Dec 05 15:44:52.385 INFO [stderr] warning: function is never used: `sample_match`
Dec 05 15:44:52.385 INFO [stderr]    --> src/main.rs:324:1
Dec 05 15:44:52.385 INFO [stderr]     |
Dec 05 15:44:52.385 INFO [stderr] 324 | fn sample_match() {
Dec 05 15:44:52.385 INFO [stderr]     | ^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.385 INFO [stderr] 
Dec 05 15:44:52.385 INFO [stderr] warning: function is never used: `sample_enum`
Dec 05 15:44:52.385 INFO [stderr]    --> src/main.rs:370:1
Dec 05 15:44:52.385 INFO [stderr]     |
Dec 05 15:44:52.385 INFO [stderr] 370 | fn sample_enum() {
Dec 05 15:44:52.385 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 05 15:44:52.385 INFO [stderr] 
Dec 05 15:44:52.385 INFO [stderr] warning: function is never used: `sample_method_syntax`
Dec 05 15:44:52.385 INFO [stderr]    --> src/main.rs:386:1
Dec 05 15:44:52.385 INFO [stderr]     |
Dec 05 15:44:52.385 INFO [stderr] 386 | fn sample_method_syntax() {
Dec 05 15:44:52.385 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.385 INFO [stderr] 
Dec 05 15:44:52.385 INFO [stderr] warning: function is never used: `sample_use_struct`
Dec 05 15:44:52.385 INFO [stderr]    --> src/main.rs:407:1
Dec 05 15:44:52.385 INFO [stderr]     |
Dec 05 15:44:52.385 INFO [stderr] 407 | fn sample_use_struct() {
Dec 05 15:44:52.385 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.385 INFO [stderr] 
Dec 05 15:44:52.385 INFO [stderr] warning: function is never used: `sample_defining_struct`
Dec 05 15:44:52.385 INFO [stderr]    --> src/main.rs:430:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 430 | fn sample_defining_struct() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_string_slice`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:453:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 453 | fn sample_string_slice() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_slice_type`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:478:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 478 | fn sample_slice_type() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_ownership_multi_ref`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:494:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 494 | fn sample_ownership_multi_ref() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_ownership_ref`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:507:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 507 | fn sample_ownership_ref() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_ownership`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:536:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 536 | fn sample_ownership() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_control_flow`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:562:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 562 | fn sample_control_flow() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_function_call`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:609:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 609 | fn sample_function_call() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_type`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:635:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 635 | fn sample_type() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_len`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:643:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 643 | fn sample_len() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: function is never used: `sample_rang`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:648:1
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 648 | fn sample_rang() {
Dec 05 15:44:52.386 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: trait method `summarizeD` should have a snake case name such as `summarize_d`
Dec 05 15:44:52.386 INFO [stderr]    --> src/main.rs:102:5
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr] 102 |     fn summarizeD(&self) -> String;
Dec 05 15:44:52.386 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.386 INFO [stderr]     |
Dec 05 15:44:52.386 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 05 15:44:52.386 INFO [stderr] 
Dec 05 15:44:52.386 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 15:44:52.387 INFO [stderr]    --> src/main.rs:223:5
Dec 05 15:44:52.387 INFO [stderr]     |
Dec 05 15:44:52.387 INFO [stderr] 223 |     File::open("./src/hello.txt")?.read_to_string(&mut s2);
Dec 05 15:44:52.387 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:52.387 INFO [stderr]     |
Dec 05 15:44:52.387 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 15:44:52.387 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 15:44:52.387 INFO [stderr] 
Dec 05 15:44:52.387 INFO [stderr] warning: variable `commonS` should have a snake case name such as `common_s`
Dec 05 15:44:52.387 INFO [stderr]    --> src/main.rs:455:7
Dec 05 15:44:52.387 INFO [stderr]     |
Dec 05 15:44:52.387 INFO [stderr] 455 |   let commonS = "Hello Common World";
Dec 05 15:44:52.387 INFO [stderr]     |       ^^^^^^^
Dec 05 15:44:52.387 INFO [stderr] 
Dec 05 15:44:53.002 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
Dec 05 15:44:53.005 INFO [stderr] su: No module specific data is present
Dec 05 15:44:53.576 INFO running `"docker" "inspect" "40801a68ff8a7c85cf1dbd69b83119f157a268bf008835ffc9ec1895c6e12030"`
Dec 05 15:44:53.814 INFO running `"docker" "rm" "-f" "40801a68ff8a7c85cf1dbd69b83119f157a268bf008835ffc9ec1895c6e12030"`
Dec 05 15:44:54.172 INFO [stdout] 40801a68ff8a7c85cf1dbd69b83119f157a268bf008835ffc9ec1895c6e12030
Dec 05 15:44:54.176 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 15:44:54.722 INFO [stdout] cc5d288d72681cd0489db497faaec13089ca2df2542286a01f1e764a05aaa02a
Dec 05 15:44:54.724 INFO running `"docker" "start" "-a" "cc5d288d72681cd0489db497faaec13089ca2df2542286a01f1e764a05aaa02a"`
Dec 05 15:44:55.884 INFO [stderr] usermod: no changes
Dec 05 15:44:55.984 INFO [stderr]    Compiling hello v0.1.0 (/source)
Dec 05 15:44:56.325 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 05 15:44:56.325 INFO [stderr]    --> src/main.rs:567:17
Dec 05 15:44:56.325 INFO [stderr]     |
Dec 05 15:44:56.325 INFO [stderr] 567 |   for number in (1..5) {
Dec 05 15:44:56.325 INFO [stderr]     |                 ^^^^^^ help: remove these parentheses
Dec 05 15:44:56.325 INFO [stderr]     |
Dec 05 15:44:56.325 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 05 15:44:56.325 INFO [stderr] 
Dec 05 15:44:56.401 INFO [stderr] warning: unreachable statement
Dec 05 15:44:56.401 INFO [stderr]    --> src/main.rs:254:3
Dec 05 15:44:56.401 INFO [stderr]     |
Dec 05 15:44:56.401 INFO [stderr] 254 |   println!("{}", "Run here?"); // Not run
Dec 05 15:44:56.401 INFO [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.401 INFO [stderr]     |
Dec 05 15:44:56.401 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 05 15:44:56.401 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 05 15:44:56.401 INFO [stderr] 
Dec 05 15:44:56.460 INFO [stderr] warning: unused variable: `f`
Dec 05 15:44:56.460 INFO [stderr]    --> src/main.rs:188:7
Dec 05 15:44:56.460 INFO [stderr]     |
Dec 05 15:44:56.460 INFO [stderr] 188 |   let f = match f {
Dec 05 15:44:56.460 INFO [stderr]     |       ^ help: consider using `_f` instead
Dec 05 15:44:56.460 INFO [stderr]     |
Dec 05 15:44:56.460 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 05 15:44:56.460 INFO [stderr] 
Dec 05 15:44:56.460 INFO [stderr] warning: unused variable: `row`
Dec 05 15:44:56.460 INFO [stderr]    --> src/main.rs:301:7
Dec 05 15:44:56.460 INFO [stderr]     |
Dec 05 15:44:56.460 INFO [stderr] 301 |   let row = vec![
Dec 05 15:44:56.460 INFO [stderr]     |       ^^^ help: consider using `_row` instead
Dec 05 15:44:56.460 INFO [stderr] 
Dec 05 15:44:56.460 INFO [stderr] warning: unused variable: `six`
Dec 05 15:44:56.460 INFO [stderr]    --> src/main.rs:358:7
Dec 05 15:44:56.460 INFO [stderr]     |
Dec 05 15:44:56.460 INFO [stderr] 358 |   let six = plus_one(five);
Dec 05 15:44:56.460 INFO [stderr]     |       ^^^ help: consider using `_six` instead
Dec 05 15:44:56.460 INFO [stderr] 
Dec 05 15:44:56.460 INFO [stderr] warning: unused variable: `none`
Dec 05 15:44:56.460 INFO [stderr]    --> src/main.rs:359:7
Dec 05 15:44:56.460 INFO [stderr]     |
Dec 05 15:44:56.460 INFO [stderr] 359 |   let none = plus_one(None);
Dec 05 15:44:56.460 INFO [stderr]     |       ^^^^ help: consider using `_none` instead
Dec 05 15:44:56.460 INFO [stderr] 
Dec 05 15:44:56.460 INFO [stderr] warning: unused variable: `home`
Dec 05 15:44:56.460 INFO [stderr]    --> src/main.rs:380:7
Dec 05 15:44:56.460 INFO [stderr]     |
Dec 05 15:44:56.460 INFO [stderr] 380 |   let home = IpAddr {
Dec 05 15:44:56.460 INFO [stderr]     |       ^^^^ help: consider using `_home` instead
Dec 05 15:44:56.460 INFO [stderr] 
Dec 05 15:44:56.460 INFO [stderr] warning: unused variable: `r1`
Dec 05 15:44:56.461 INFO [stderr]    --> src/main.rs:498:9
Dec 05 15:44:56.461 INFO [stderr]     |
Dec 05 15:44:56.461 INFO [stderr] 498 |     let r1 = &mut s;
Dec 05 15:44:56.461 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Dec 05 15:44:56.461 INFO [stderr] 
Dec 05 15:44:56.461 INFO [stderr] warning: unused variable: `r2`
Dec 05 15:44:56.461 INFO [stderr]    --> src/main.rs:500:7
Dec 05 15:44:56.461 INFO [stderr]     |
Dec 05 15:44:56.461 INFO [stderr] 500 |   let r2 = &mut s;
Dec 05 15:44:56.461 INFO [stderr]     |       ^^ help: consider using `_r2` instead
Dec 05 15:44:56.461 INFO [stderr] 
Dec 05 15:44:56.520 INFO [stderr] warning: function is never used: `longest`
Dec 05 15:44:56.520 INFO [stderr]   --> src/main.rs:53:3
Dec 05 15:44:56.520 INFO [stderr]    |
Dec 05 15:44:56.520 INFO [stderr] 53 |   fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
Dec 05 15:44:56.520 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.520 INFO [stderr]    |
Dec 05 15:44:56.520 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 15:44:56.520 INFO [stderr] 
Dec 05 15:44:56.524 INFO [stderr] warning: function is never used: `sample_impl_trait_type`
Dec 05 15:44:56.524 INFO [stderr]   --> src/main.rs:94:1
Dec 05 15:44:56.524 INFO [stderr]    |
Dec 05 15:44:56.524 INFO [stderr] 94 | fn sample_impl_trait_type() {
Dec 05 15:44:56.524 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.524 INFO [stderr] 
Dec 05 15:44:56.524 INFO [stderr] warning: function is never used: `sample_generic_types`
Dec 05 15:44:56.524 INFO [stderr]    --> src/main.rs:151:1
Dec 05 15:44:56.524 INFO [stderr]     |
Dec 05 15:44:56.524 INFO [stderr] 151 | fn sample_generic_types() {
Dec 05 15:44:56.524 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.524 INFO [stderr] 
Dec 05 15:44:56.524 INFO [stderr] warning: function is never used: `sample_error_result`
Dec 05 15:44:56.524 INFO [stderr]    --> src/main.rs:177:1
Dec 05 15:44:56.524 INFO [stderr]     |
Dec 05 15:44:56.524 INFO [stderr] 177 | fn sample_error_result() {
Dec 05 15:44:56.524 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.524 INFO [stderr] 
Dec 05 15:44:56.524 INFO [stderr] warning: function is never used: `sample_error_panic`
Dec 05 15:44:56.524 INFO [stderr]    --> src/main.rs:250:1
Dec 05 15:44:56.524 INFO [stderr]     |
Dec 05 15:44:56.524 INFO [stderr] 250 | fn sample_error_panic() {
Dec 05 15:44:56.524 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.524 INFO [stderr] 
Dec 05 15:44:56.524 INFO [stderr] warning: function is never used: `sample_hash_map`
Dec 05 15:44:56.524 INFO [stderr]    --> src/main.rs:257:1
Dec 05 15:44:56.524 INFO [stderr]     |
Dec 05 15:44:56.524 INFO [stderr] 257 | fn sample_hash_map() {
Dec 05 15:44:56.524 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.524 INFO [stderr] 
Dec 05 15:44:56.524 INFO [stderr] warning: function is never used: `sample_vector`
Dec 05 15:44:56.524 INFO [stderr]    --> src/main.rs:285:1
Dec 05 15:44:56.524 INFO [stderr]     |
Dec 05 15:44:56.524 INFO [stderr] 285 | fn sample_vector() {
Dec 05 15:44:56.524 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.524 INFO [stderr] 
Dec 05 15:44:56.524 INFO [stderr] warning: function is never used: `sample_if_let`
Dec 05 15:44:56.524 INFO [stderr]    --> src/main.rs:309:1
Dec 05 15:44:56.524 INFO [stderr]     |
Dec 05 15:44:56.524 INFO [stderr] 309 | fn sample_if_let() {
Dec 05 15:44:56.524 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.524 INFO [stderr] 
Dec 05 15:44:56.524 INFO [stderr] warning: function is never used: `sample_match`
Dec 05 15:44:56.524 INFO [stderr]    --> src/main.rs:324:1
Dec 05 15:44:56.524 INFO [stderr]     |
Dec 05 15:44:56.524 INFO [stderr] 324 | fn sample_match() {
Dec 05 15:44:56.524 INFO [stderr]     | ^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.524 INFO [stderr] 
Dec 05 15:44:56.524 INFO [stderr] warning: function is never used: `sample_enum`
Dec 05 15:44:56.524 INFO [stderr]    --> src/main.rs:370:1
Dec 05 15:44:56.524 INFO [stderr]     |
Dec 05 15:44:56.524 INFO [stderr] 370 | fn sample_enum() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_method_syntax`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:386:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 386 | fn sample_method_syntax() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_use_struct`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:407:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 407 | fn sample_use_struct() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_defining_struct`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:430:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 430 | fn sample_defining_struct() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_string_slice`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:453:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 453 | fn sample_string_slice() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_slice_type`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:478:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 478 | fn sample_slice_type() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_ownership_multi_ref`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:494:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 494 | fn sample_ownership_multi_ref() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_ownership_ref`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:507:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 507 | fn sample_ownership_ref() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_ownership`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:536:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 536 | fn sample_ownership() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_control_flow`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:562:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 562 | fn sample_control_flow() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_function_call`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:609:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 609 | fn sample_function_call() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_type`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:635:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 635 | fn sample_type() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_len`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:643:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 643 | fn sample_len() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: function is never used: `sample_rang`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:648:1
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 648 | fn sample_rang() {
Dec 05 15:44:56.525 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: trait method `summarizeD` should have a snake case name such as `summarize_d`
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:102:5
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 102 |     fn summarizeD(&self) -> String;
Dec 05 15:44:56.525 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 05 15:44:56.525 INFO [stderr] 
Dec 05 15:44:56.525 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 15:44:56.525 INFO [stderr]    --> src/main.rs:223:5
Dec 05 15:44:56.525 INFO [stderr]     |
Dec 05 15:44:56.525 INFO [stderr] 223 |     File::open("./src/hello.txt")?.read_to_string(&mut s2);
Dec 05 15:44:56.525 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:44:56.526 INFO [stderr]     |
Dec 05 15:44:56.526 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 05 15:44:56.526 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 15:44:56.526 INFO [stderr] 
Dec 05 15:44:56.526 INFO [stderr] warning: variable `commonS` should have a snake case name such as `common_s`
Dec 05 15:44:56.526 INFO [stderr]    --> src/main.rs:455:7
Dec 05 15:44:56.526 INFO [stderr]     |
Dec 05 15:44:56.526 INFO [stderr] 455 |   let commonS = "Hello Common World";
Dec 05 15:44:56.526 INFO [stderr]     |       ^^^^^^^
Dec 05 15:44:56.526 INFO [stderr] 
Dec 05 15:44:56.861 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
Dec 05 15:44:56.868 INFO [stderr] su: No module specific data is present
Dec 05 15:44:57.418 INFO running `"docker" "inspect" "cc5d288d72681cd0489db497faaec13089ca2df2542286a01f1e764a05aaa02a"`
Dec 05 15:44:57.684 INFO running `"docker" "rm" "-f" "cc5d288d72681cd0489db497faaec13089ca2df2542286a01f1e764a05aaa02a"`
Dec 05 15:44:58.016 INFO [stdout] cc5d288d72681cd0489db497faaec13089ca2df2542286a01f1e764a05aaa02a
Dec 05 15:44:58.022 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 15:44:58.461 INFO [stdout] 43f47bdf206fd284cb49609b99af61f962280ce6db7846685eb3ea30778801a6
Dec 05 15:44:58.463 INFO running `"docker" "start" "-a" "43f47bdf206fd284cb49609b99af61f962280ce6db7846685eb3ea30778801a6"`
Dec 05 15:44:59.835 INFO [stderr] usermod: no changes
Dec 05 15:44:59.912 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Dec 05 15:44:59.912 INFO [stderr]      Running /target/debug/deps/hello-fd8838848f455340
Dec 05 15:44:59.928 INFO [stderr] su: No module specific data is present
Dec 05 15:44:59.928 INFO [stdout] 
Dec 05 15:44:59.928 INFO [stdout] running 0 tests
Dec 05 15:44:59.928 INFO [stdout] 
Dec 05 15:44:59.928 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 15:44:59.928 INFO [stdout] 
Dec 05 15:45:01.042 INFO running `"docker" "inspect" "43f47bdf206fd284cb49609b99af61f962280ce6db7846685eb3ea30778801a6"`
Dec 05 15:45:01.278 INFO running `"docker" "rm" "-f" "43f47bdf206fd284cb49609b99af61f962280ce6db7846685eb3ea30778801a6"`
Dec 05 15:45:01.592 INFO [stdout] 43f47bdf206fd284cb49609b99af61f962280ce6db7846685eb3ea30778801a6