Nov 16 20:43:15.526 INFO testing madeinfree/hello-rust against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 16 20:43:15.528 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-5/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 16 20:43:16.071 INFO [stdout] 65377016d84b4d98122d885a5867486dd102d694811383c95fba3b94969f4025
Nov 16 20:43:16.079 INFO running `"docker" "start" "-a" "65377016d84b4d98122d885a5867486dd102d694811383c95fba3b94969f4025"`
Nov 16 20:43:17.475 INFO [stderr] usermod: no changes
Nov 16 20:43:17.587 INFO [stderr]    Compiling hello v0.1.0 (/source)
Nov 16 20:43:18.091 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Nov 16 20:43:18.091 INFO [stderr]    --> src/main.rs:567:17
Nov 16 20:43:18.091 INFO [stderr]     |
Nov 16 20:43:18.091 INFO [stderr] 567 |   for number in (1..5) {
Nov 16 20:43:18.091 INFO [stderr]     |                 ^^^^^^ help: remove these parentheses
Nov 16 20:43:18.091 INFO [stderr]     |
Nov 16 20:43:18.091 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Nov 16 20:43:18.091 INFO [stderr] 
Nov 16 20:43:18.263 INFO [stderr] warning: unreachable statement
Nov 16 20:43:18.263 INFO [stderr]    --> src/main.rs:254:3
Nov 16 20:43:18.263 INFO [stderr]     |
Nov 16 20:43:18.263 INFO [stderr] 254 |   println!("{}", "Run here?"); // Not run
Nov 16 20:43:18.263 INFO [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.263 INFO [stderr]     |
Nov 16 20:43:18.263 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Nov 16 20:43:18.263 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)
Nov 16 20:43:18.263 INFO [stderr] 
Nov 16 20:43:18.348 INFO [stderr] warning: unused variable: `f`
Nov 16 20:43:18.348 INFO [stderr]    --> src/main.rs:188:7
Nov 16 20:43:18.348 INFO [stderr]     |
Nov 16 20:43:18.348 INFO [stderr] 188 |   let f = match f {
Nov 16 20:43:18.348 INFO [stderr]     |       ^ help: consider using `_f` instead
Nov 16 20:43:18.348 INFO [stderr]     |
Nov 16 20:43:18.348 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 16 20:43:18.348 INFO [stderr] 
Nov 16 20:43:18.348 INFO [stderr] warning: unused variable: `row`
Nov 16 20:43:18.348 INFO [stderr]    --> src/main.rs:301:7
Nov 16 20:43:18.348 INFO [stderr]     |
Nov 16 20:43:18.348 INFO [stderr] 301 |   let row = vec![
Nov 16 20:43:18.348 INFO [stderr]     |       ^^^ help: consider using `_row` instead
Nov 16 20:43:18.348 INFO [stderr] 
Nov 16 20:43:18.348 INFO [stderr] warning: unused variable: `six`
Nov 16 20:43:18.348 INFO [stderr]    --> src/main.rs:358:7
Nov 16 20:43:18.348 INFO [stderr]     |
Nov 16 20:43:18.348 INFO [stderr] 358 |   let six = plus_one(five);
Nov 16 20:43:18.348 INFO [stderr]     |       ^^^ help: consider using `_six` instead
Nov 16 20:43:18.348 INFO [stderr] 
Nov 16 20:43:18.348 INFO [stderr] warning: unused variable: `none`
Nov 16 20:43:18.348 INFO [stderr]    --> src/main.rs:359:7
Nov 16 20:43:18.348 INFO [stderr]     |
Nov 16 20:43:18.348 INFO [stderr] 359 |   let none = plus_one(None);
Nov 16 20:43:18.348 INFO [stderr]     |       ^^^^ help: consider using `_none` instead
Nov 16 20:43:18.348 INFO [stderr] 
Nov 16 20:43:18.348 INFO [stderr] warning: unused variable: `home`
Nov 16 20:43:18.348 INFO [stderr]    --> src/main.rs:380:7
Nov 16 20:43:18.348 INFO [stderr]     |
Nov 16 20:43:18.348 INFO [stderr] 380 |   let home = IpAddr {
Nov 16 20:43:18.348 INFO [stderr]     |       ^^^^ help: consider using `_home` instead
Nov 16 20:43:18.348 INFO [stderr] 
Nov 16 20:43:18.348 INFO [stderr] warning: unused variable: `r1`
Nov 16 20:43:18.348 INFO [stderr]    --> src/main.rs:498:9
Nov 16 20:43:18.348 INFO [stderr]     |
Nov 16 20:43:18.348 INFO [stderr] 498 |     let r1 = &mut s;
Nov 16 20:43:18.348 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Nov 16 20:43:18.348 INFO [stderr] 
Nov 16 20:43:18.348 INFO [stderr] warning: unused variable: `r2`
Nov 16 20:43:18.348 INFO [stderr]    --> src/main.rs:500:7
Nov 16 20:43:18.349 INFO [stderr]     |
Nov 16 20:43:18.349 INFO [stderr] 500 |   let r2 = &mut s;
Nov 16 20:43:18.349 INFO [stderr]     |       ^^ help: consider using `_r2` instead
Nov 16 20:43:18.349 INFO [stderr] 
Nov 16 20:43:18.435 INFO [stderr] warning: function is never used: `longest`
Nov 16 20:43:18.435 INFO [stderr]   --> src/main.rs:53:3
Nov 16 20:43:18.435 INFO [stderr]    |
Nov 16 20:43:18.435 INFO [stderr] 53 |   fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
Nov 16 20:43:18.435 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.435 INFO [stderr]    |
Nov 16 20:43:18.435 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 16 20:43:18.435 INFO [stderr] 
Nov 16 20:43:18.435 INFO [stderr] warning: function is never used: `sample_impl_trait_type`
Nov 16 20:43:18.435 INFO [stderr]   --> src/main.rs:94:1
Nov 16 20:43:18.435 INFO [stderr]    |
Nov 16 20:43:18.435 INFO [stderr] 94 | fn sample_impl_trait_type() {
Nov 16 20:43:18.435 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.435 INFO [stderr] 
Nov 16 20:43:18.435 INFO [stderr] warning: function is never used: `sample_generic_types`
Nov 16 20:43:18.435 INFO [stderr]    --> src/main.rs:151:1
Nov 16 20:43:18.435 INFO [stderr]     |
Nov 16 20:43:18.435 INFO [stderr] 151 | fn sample_generic_types() {
Nov 16 20:43:18.435 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.435 INFO [stderr] 
Nov 16 20:43:18.435 INFO [stderr] warning: function is never used: `sample_error_result`
Nov 16 20:43:18.435 INFO [stderr]    --> src/main.rs:177:1
Nov 16 20:43:18.435 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 177 | fn sample_error_result() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_error_panic`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:250:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 250 | fn sample_error_panic() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_hash_map`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:257:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 257 | fn sample_hash_map() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_vector`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:285:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 285 | fn sample_vector() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_if_let`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:309:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 309 | fn sample_if_let() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_match`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:324:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 324 | fn sample_match() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_enum`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:370:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 370 | fn sample_enum() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_method_syntax`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:386:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 386 | fn sample_method_syntax() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_use_struct`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:407:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 407 | fn sample_use_struct() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_defining_struct`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:430:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 430 | fn sample_defining_struct() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_string_slice`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:453:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 453 | fn sample_string_slice() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_slice_type`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:478:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 478 | fn sample_slice_type() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_ownership_multi_ref`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:494:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 494 | fn sample_ownership_multi_ref() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_ownership_ref`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:507:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.436 INFO [stderr] 507 | fn sample_ownership_ref() {
Nov 16 20:43:18.436 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.436 INFO [stderr] 
Nov 16 20:43:18.436 INFO [stderr] warning: function is never used: `sample_ownership`
Nov 16 20:43:18.436 INFO [stderr]    --> src/main.rs:536:1
Nov 16 20:43:18.436 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr] 536 | fn sample_ownership() {
Nov 16 20:43:18.437 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.437 INFO [stderr] 
Nov 16 20:43:18.437 INFO [stderr] warning: function is never used: `sample_control_flow`
Nov 16 20:43:18.437 INFO [stderr]    --> src/main.rs:562:1
Nov 16 20:43:18.437 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr] 562 | fn sample_control_flow() {
Nov 16 20:43:18.437 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.437 INFO [stderr] 
Nov 16 20:43:18.437 INFO [stderr] warning: function is never used: `sample_function_call`
Nov 16 20:43:18.437 INFO [stderr]    --> src/main.rs:609:1
Nov 16 20:43:18.437 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr] 609 | fn sample_function_call() {
Nov 16 20:43:18.437 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.437 INFO [stderr] 
Nov 16 20:43:18.437 INFO [stderr] warning: function is never used: `sample_type`
Nov 16 20:43:18.437 INFO [stderr]    --> src/main.rs:635:1
Nov 16 20:43:18.437 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr] 635 | fn sample_type() {
Nov 16 20:43:18.437 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Nov 16 20:43:18.437 INFO [stderr] 
Nov 16 20:43:18.437 INFO [stderr] warning: function is never used: `sample_len`
Nov 16 20:43:18.437 INFO [stderr]    --> src/main.rs:643:1
Nov 16 20:43:18.437 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr] 643 | fn sample_len() {
Nov 16 20:43:18.437 INFO [stderr]     | ^^^^^^^^^^^^^^^
Nov 16 20:43:18.437 INFO [stderr] 
Nov 16 20:43:18.437 INFO [stderr] warning: function is never used: `sample_rang`
Nov 16 20:43:18.437 INFO [stderr]    --> src/main.rs:648:1
Nov 16 20:43:18.437 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr] 648 | fn sample_rang() {
Nov 16 20:43:18.437 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Nov 16 20:43:18.437 INFO [stderr] 
Nov 16 20:43:18.437 INFO [stderr] warning: trait method `summarizeD` should have a snake case name such as `summarize_d`
Nov 16 20:43:18.437 INFO [stderr]    --> src/main.rs:102:5
Nov 16 20:43:18.437 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr] 102 |     fn summarizeD(&self) -> String;
Nov 16 20:43:18.437 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.437 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Nov 16 20:43:18.437 INFO [stderr] 
Nov 16 20:43:18.437 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 20:43:18.437 INFO [stderr]    --> src/main.rs:223:5
Nov 16 20:43:18.437 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr] 223 |     File::open("./src/hello.txt")?.read_to_string(&mut s2);
Nov 16 20:43:18.437 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:18.437 INFO [stderr]     |
Nov 16 20:43:18.437 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 16 20:43:18.437 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 20:43:18.437 INFO [stderr] 
Nov 16 20:43:18.439 INFO [stderr] warning: variable `commonS` should have a snake case name such as `common_s`
Nov 16 20:43:18.439 INFO [stderr]    --> src/main.rs:455:7
Nov 16 20:43:18.439 INFO [stderr]     |
Nov 16 20:43:18.439 INFO [stderr] 455 |   let commonS = "Hello Common World";
Nov 16 20:43:18.439 INFO [stderr]     |       ^^^^^^^
Nov 16 20:43:18.439 INFO [stderr] 
Nov 16 20:43:19.138 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
Nov 16 20:43:19.142 INFO [stderr] su: No module specific data is present
Nov 16 20:43:20.251 INFO running `"docker" "inspect" "65377016d84b4d98122d885a5867486dd102d694811383c95fba3b94969f4025"`
Nov 16 20:43:20.545 INFO running `"docker" "rm" "-f" "65377016d84b4d98122d885a5867486dd102d694811383c95fba3b94969f4025"`
Nov 16 20:43:20.875 INFO [stdout] 65377016d84b4d98122d885a5867486dd102d694811383c95fba3b94969f4025
Nov 16 20:43:20.885 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-5/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 16 20:43:21.435 INFO [stdout] 5a7ffec9b4084c5751144e9ed025e79a7db00a9af3ec39060272fc8b41f5cf88
Nov 16 20:43:21.437 INFO running `"docker" "start" "-a" "5a7ffec9b4084c5751144e9ed025e79a7db00a9af3ec39060272fc8b41f5cf88"`
Nov 16 20:43:22.967 INFO [stderr] usermod: no changes
Nov 16 20:43:23.059 INFO [stderr]    Compiling hello v0.1.0 (/source)
Nov 16 20:43:23.455 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Nov 16 20:43:23.456 INFO [stderr]    --> src/main.rs:567:17
Nov 16 20:43:23.456 INFO [stderr]     |
Nov 16 20:43:23.456 INFO [stderr] 567 |   for number in (1..5) {
Nov 16 20:43:23.457 INFO [stderr]     |                 ^^^^^^ help: remove these parentheses
Nov 16 20:43:23.457 INFO [stderr]     |
Nov 16 20:43:23.457 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Nov 16 20:43:23.457 INFO [stderr] 
Nov 16 20:43:23.547 INFO [stderr] warning: unreachable statement
Nov 16 20:43:23.548 INFO [stderr]    --> src/main.rs:254:3
Nov 16 20:43:23.548 INFO [stderr]     |
Nov 16 20:43:23.548 INFO [stderr] 254 |   println!("{}", "Run here?"); // Not run
Nov 16 20:43:23.548 INFO [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.548 INFO [stderr]     |
Nov 16 20:43:23.548 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Nov 16 20:43:23.548 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)
Nov 16 20:43:23.548 INFO [stderr] 
Nov 16 20:43:23.631 INFO [stderr] warning: unused variable: `f`
Nov 16 20:43:23.631 INFO [stderr]    --> src/main.rs:188:7
Nov 16 20:43:23.631 INFO [stderr]     |
Nov 16 20:43:23.631 INFO [stderr] 188 |   let f = match f {
Nov 16 20:43:23.631 INFO [stderr]     |       ^ help: consider using `_f` instead
Nov 16 20:43:23.631 INFO [stderr]     |
Nov 16 20:43:23.631 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 16 20:43:23.631 INFO [stderr] 
Nov 16 20:43:23.631 INFO [stderr] warning: unused variable: `row`
Nov 16 20:43:23.631 INFO [stderr]    --> src/main.rs:301:7
Nov 16 20:43:23.631 INFO [stderr]     |
Nov 16 20:43:23.631 INFO [stderr] 301 |   let row = vec![
Nov 16 20:43:23.631 INFO [stderr]     |       ^^^ help: consider using `_row` instead
Nov 16 20:43:23.631 INFO [stderr] 
Nov 16 20:43:23.631 INFO [stderr] warning: unused variable: `six`
Nov 16 20:43:23.631 INFO [stderr]    --> src/main.rs:358:7
Nov 16 20:43:23.631 INFO [stderr]     |
Nov 16 20:43:23.631 INFO [stderr] 358 |   let six = plus_one(five);
Nov 16 20:43:23.632 INFO [stderr]     |       ^^^ help: consider using `_six` instead
Nov 16 20:43:23.632 INFO [stderr] 
Nov 16 20:43:23.632 INFO [stderr] warning: unused variable: `none`
Nov 16 20:43:23.632 INFO [stderr]    --> src/main.rs:359:7
Nov 16 20:43:23.632 INFO [stderr]     |
Nov 16 20:43:23.632 INFO [stderr] 359 |   let none = plus_one(None);
Nov 16 20:43:23.632 INFO [stderr]     |       ^^^^ help: consider using `_none` instead
Nov 16 20:43:23.632 INFO [stderr] 
Nov 16 20:43:23.632 INFO [stderr] warning: unused variable: `home`
Nov 16 20:43:23.632 INFO [stderr]    --> src/main.rs:380:7
Nov 16 20:43:23.632 INFO [stderr]     |
Nov 16 20:43:23.632 INFO [stderr] 380 |   let home = IpAddr {
Nov 16 20:43:23.632 INFO [stderr]     |       ^^^^ help: consider using `_home` instead
Nov 16 20:43:23.632 INFO [stderr] 
Nov 16 20:43:23.632 INFO [stderr] warning: unused variable: `r1`
Nov 16 20:43:23.632 INFO [stderr]    --> src/main.rs:498:9
Nov 16 20:43:23.632 INFO [stderr]     |
Nov 16 20:43:23.632 INFO [stderr] 498 |     let r1 = &mut s;
Nov 16 20:43:23.632 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Nov 16 20:43:23.632 INFO [stderr] 
Nov 16 20:43:23.632 INFO [stderr] warning: unused variable: `r2`
Nov 16 20:43:23.632 INFO [stderr]    --> src/main.rs:500:7
Nov 16 20:43:23.632 INFO [stderr]     |
Nov 16 20:43:23.632 INFO [stderr] 500 |   let r2 = &mut s;
Nov 16 20:43:23.632 INFO [stderr]     |       ^^ help: consider using `_r2` instead
Nov 16 20:43:23.633 INFO [stderr] 
Nov 16 20:43:23.698 INFO [stderr] warning: function is never used: `longest`
Nov 16 20:43:23.699 INFO [stderr]   --> src/main.rs:53:3
Nov 16 20:43:23.699 INFO [stderr]    |
Nov 16 20:43:23.699 INFO [stderr] 53 |   fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
Nov 16 20:43:23.699 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.699 INFO [stderr]    |
Nov 16 20:43:23.699 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 16 20:43:23.699 INFO [stderr] 
Nov 16 20:43:23.699 INFO [stderr] warning: function is never used: `sample_impl_trait_type`
Nov 16 20:43:23.699 INFO [stderr]   --> src/main.rs:94:1
Nov 16 20:43:23.699 INFO [stderr]    |
Nov 16 20:43:23.699 INFO [stderr] 94 | fn sample_impl_trait_type() {
Nov 16 20:43:23.699 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.699 INFO [stderr] 
Nov 16 20:43:23.699 INFO [stderr] warning: function is never used: `sample_generic_types`
Nov 16 20:43:23.700 INFO [stderr]    --> src/main.rs:151:1
Nov 16 20:43:23.700 INFO [stderr]     |
Nov 16 20:43:23.700 INFO [stderr] 151 | fn sample_generic_types() {
Nov 16 20:43:23.700 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.700 INFO [stderr] 
Nov 16 20:43:23.700 INFO [stderr] warning: function is never used: `sample_error_result`
Nov 16 20:43:23.700 INFO [stderr]    --> src/main.rs:177:1
Nov 16 20:43:23.700 INFO [stderr]     |
Nov 16 20:43:23.700 INFO [stderr] 177 | fn sample_error_result() {
Nov 16 20:43:23.700 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.700 INFO [stderr] 
Nov 16 20:43:23.700 INFO [stderr] warning: function is never used: `sample_error_panic`
Nov 16 20:43:23.700 INFO [stderr]    --> src/main.rs:250:1
Nov 16 20:43:23.700 INFO [stderr]     |
Nov 16 20:43:23.700 INFO [stderr] 250 | fn sample_error_panic() {
Nov 16 20:43:23.700 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.700 INFO [stderr] 
Nov 16 20:43:23.701 INFO [stderr] warning: function is never used: `sample_hash_map`
Nov 16 20:43:23.701 INFO [stderr]    --> src/main.rs:257:1
Nov 16 20:43:23.701 INFO [stderr]     |
Nov 16 20:43:23.701 INFO [stderr] 257 | fn sample_hash_map() {
Nov 16 20:43:23.701 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.701 INFO [stderr] 
Nov 16 20:43:23.701 INFO [stderr] warning: function is never used: `sample_vector`
Nov 16 20:43:23.701 INFO [stderr]    --> src/main.rs:285:1
Nov 16 20:43:23.701 INFO [stderr]     |
Nov 16 20:43:23.701 INFO [stderr] 285 | fn sample_vector() {
Nov 16 20:43:23.701 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.701 INFO [stderr] 
Nov 16 20:43:23.701 INFO [stderr] warning: function is never used: `sample_if_let`
Nov 16 20:43:23.701 INFO [stderr]    --> src/main.rs:309:1
Nov 16 20:43:23.701 INFO [stderr]     |
Nov 16 20:43:23.701 INFO [stderr] 309 | fn sample_if_let() {
Nov 16 20:43:23.701 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.701 INFO [stderr] 
Nov 16 20:43:23.701 INFO [stderr] warning: function is never used: `sample_match`
Nov 16 20:43:23.701 INFO [stderr]    --> src/main.rs:324:1
Nov 16 20:43:23.701 INFO [stderr]     |
Nov 16 20:43:23.701 INFO [stderr] 324 | fn sample_match() {
Nov 16 20:43:23.702 INFO [stderr]     | ^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.702 INFO [stderr] 
Nov 16 20:43:23.702 INFO [stderr] warning: function is never used: `sample_enum`
Nov 16 20:43:23.702 INFO [stderr]    --> src/main.rs:370:1
Nov 16 20:43:23.702 INFO [stderr]     |
Nov 16 20:43:23.702 INFO [stderr] 370 | fn sample_enum() {
Nov 16 20:43:23.702 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Nov 16 20:43:23.702 INFO [stderr] 
Nov 16 20:43:23.702 INFO [stderr] warning: function is never used: `sample_method_syntax`
Nov 16 20:43:23.702 INFO [stderr]    --> src/main.rs:386:1
Nov 16 20:43:23.702 INFO [stderr]     |
Nov 16 20:43:23.702 INFO [stderr] 386 | fn sample_method_syntax() {
Nov 16 20:43:23.702 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.702 INFO [stderr] 
Nov 16 20:43:23.702 INFO [stderr] warning: function is never used: `sample_use_struct`
Nov 16 20:43:23.702 INFO [stderr]    --> src/main.rs:407:1
Nov 16 20:43:23.702 INFO [stderr]     |
Nov 16 20:43:23.702 INFO [stderr] 407 | fn sample_use_struct() {
Nov 16 20:43:23.702 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.702 INFO [stderr] 
Nov 16 20:43:23.702 INFO [stderr] warning: function is never used: `sample_defining_struct`
Nov 16 20:43:23.702 INFO [stderr]    --> src/main.rs:430:1
Nov 16 20:43:23.702 INFO [stderr]     |
Nov 16 20:43:23.702 INFO [stderr] 430 | fn sample_defining_struct() {
Nov 16 20:43:23.702 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.702 INFO [stderr] 
Nov 16 20:43:23.702 INFO [stderr] warning: function is never used: `sample_string_slice`
Nov 16 20:43:23.702 INFO [stderr]    --> src/main.rs:453:1
Nov 16 20:43:23.703 INFO [stderr]     |
Nov 16 20:43:23.703 INFO [stderr] 453 | fn sample_string_slice() {
Nov 16 20:43:23.703 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.703 INFO [stderr] 
Nov 16 20:43:23.703 INFO [stderr] warning: function is never used: `sample_slice_type`
Nov 16 20:43:23.703 INFO [stderr]    --> src/main.rs:478:1
Nov 16 20:43:23.703 INFO [stderr]     |
Nov 16 20:43:23.703 INFO [stderr] 478 | fn sample_slice_type() {
Nov 16 20:43:23.703 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.703 INFO [stderr] 
Nov 16 20:43:23.703 INFO [stderr] warning: function is never used: `sample_ownership_multi_ref`
Nov 16 20:43:23.703 INFO [stderr]    --> src/main.rs:494:1
Nov 16 20:43:23.703 INFO [stderr]     |
Nov 16 20:43:23.703 INFO [stderr] 494 | fn sample_ownership_multi_ref() {
Nov 16 20:43:23.703 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.703 INFO [stderr] 
Nov 16 20:43:23.703 INFO [stderr] warning: function is never used: `sample_ownership_ref`
Nov 16 20:43:23.703 INFO [stderr]    --> src/main.rs:507:1
Nov 16 20:43:23.703 INFO [stderr]     |
Nov 16 20:43:23.703 INFO [stderr] 507 | fn sample_ownership_ref() {
Nov 16 20:43:23.703 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.703 INFO [stderr] 
Nov 16 20:43:23.703 INFO [stderr] warning: function is never used: `sample_ownership`
Nov 16 20:43:23.703 INFO [stderr]    --> src/main.rs:536:1
Nov 16 20:43:23.703 INFO [stderr]     |
Nov 16 20:43:23.703 INFO [stderr] 536 | fn sample_ownership() {
Nov 16 20:43:23.703 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.704 INFO [stderr] 
Nov 16 20:43:23.704 INFO [stderr] warning: function is never used: `sample_control_flow`
Nov 16 20:43:23.704 INFO [stderr]    --> src/main.rs:562:1
Nov 16 20:43:23.704 INFO [stderr]     |
Nov 16 20:43:23.704 INFO [stderr] 562 | fn sample_control_flow() {
Nov 16 20:43:23.704 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.704 INFO [stderr] 
Nov 16 20:43:23.704 INFO [stderr] warning: function is never used: `sample_function_call`
Nov 16 20:43:23.704 INFO [stderr]    --> src/main.rs:609:1
Nov 16 20:43:23.704 INFO [stderr]     |
Nov 16 20:43:23.704 INFO [stderr] 609 | fn sample_function_call() {
Nov 16 20:43:23.704 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.704 INFO [stderr] 
Nov 16 20:43:23.704 INFO [stderr] warning: function is never used: `sample_type`
Nov 16 20:43:23.704 INFO [stderr]    --> src/main.rs:635:1
Nov 16 20:43:23.704 INFO [stderr]     |
Nov 16 20:43:23.704 INFO [stderr] 635 | fn sample_type() {
Nov 16 20:43:23.704 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Nov 16 20:43:23.704 INFO [stderr] 
Nov 16 20:43:23.704 INFO [stderr] warning: function is never used: `sample_len`
Nov 16 20:43:23.704 INFO [stderr]    --> src/main.rs:643:1
Nov 16 20:43:23.704 INFO [stderr]     |
Nov 16 20:43:23.704 INFO [stderr] 643 | fn sample_len() {
Nov 16 20:43:23.704 INFO [stderr]     | ^^^^^^^^^^^^^^^
Nov 16 20:43:23.705 INFO [stderr] 
Nov 16 20:43:23.705 INFO [stderr] warning: function is never used: `sample_rang`
Nov 16 20:43:23.705 INFO [stderr]    --> src/main.rs:648:1
Nov 16 20:43:23.705 INFO [stderr]     |
Nov 16 20:43:23.705 INFO [stderr] 648 | fn sample_rang() {
Nov 16 20:43:23.705 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Nov 16 20:43:23.705 INFO [stderr] 
Nov 16 20:43:23.705 INFO [stderr] warning: trait method `summarizeD` should have a snake case name such as `summarize_d`
Nov 16 20:43:23.705 INFO [stderr]    --> src/main.rs:102:5
Nov 16 20:43:23.705 INFO [stderr]     |
Nov 16 20:43:23.705 INFO [stderr] 102 |     fn summarizeD(&self) -> String;
Nov 16 20:43:23.705 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.705 INFO [stderr]     |
Nov 16 20:43:23.705 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Nov 16 20:43:23.705 INFO [stderr] 
Nov 16 20:43:23.705 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 20:43:23.705 INFO [stderr]    --> src/main.rs:223:5
Nov 16 20:43:23.705 INFO [stderr]     |
Nov 16 20:43:23.705 INFO [stderr] 223 |     File::open("./src/hello.txt")?.read_to_string(&mut s2);
Nov 16 20:43:23.705 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 20:43:23.705 INFO [stderr]     |
Nov 16 20:43:23.705 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 16 20:43:23.705 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 20:43:23.705 INFO [stderr] 
Nov 16 20:43:23.705 INFO [stderr] warning: variable `commonS` should have a snake case name such as `common_s`
Nov 16 20:43:23.706 INFO [stderr]    --> src/main.rs:455:7
Nov 16 20:43:23.706 INFO [stderr]     |
Nov 16 20:43:23.706 INFO [stderr] 455 |   let commonS = "Hello Common World";
Nov 16 20:43:23.706 INFO [stderr]     |       ^^^^^^^
Nov 16 20:43:23.706 INFO [stderr] 
Nov 16 20:43:24.025 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
Nov 16 20:43:24.028 INFO [stderr] su: No module specific data is present
Nov 16 20:43:24.535 INFO running `"docker" "inspect" "5a7ffec9b4084c5751144e9ed025e79a7db00a9af3ec39060272fc8b41f5cf88"`
Nov 16 20:43:24.766 INFO running `"docker" "rm" "-f" "5a7ffec9b4084c5751144e9ed025e79a7db00a9af3ec39060272fc8b41f5cf88"`
Nov 16 20:43:25.131 INFO [stdout] 5a7ffec9b4084c5751144e9ed025e79a7db00a9af3ec39060272fc8b41f5cf88
Nov 16 20:43:25.134 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-5/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 16 20:43:25.535 INFO [stdout] 79e5af3f0ab96e90ff735926274eed2d2b83d6e3d21f8ddb50a1978eb40467d2
Nov 16 20:43:25.540 INFO running `"docker" "start" "-a" "79e5af3f0ab96e90ff735926274eed2d2b83d6e3d21f8ddb50a1978eb40467d2"`
Nov 16 20:43:26.539 INFO [stderr] usermod: no changes
Nov 16 20:43:26.619 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Nov 16 20:43:26.619 INFO [stderr]      Running /target/debug/deps/hello-79a0f4b5ccd9b1a4
Nov 16 20:43:26.640 INFO [stdout] 
Nov 16 20:43:26.640 INFO [stdout] running 0 tests
Nov 16 20:43:26.640 INFO [stdout] 
Nov 16 20:43:26.640 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 20:43:26.640 INFO [stdout] 
Nov 16 20:43:26.647 INFO [stderr] su: No module specific data is present
Nov 16 20:43:27.232 INFO running `"docker" "inspect" "79e5af3f0ab96e90ff735926274eed2d2b83d6e3d21f8ddb50a1978eb40467d2"`
Nov 16 20:43:27.418 INFO running `"docker" "rm" "-f" "79e5af3f0ab96e90ff735926274eed2d2b83d6e3d21f8ddb50a1978eb40467d2"`
Nov 16 20:43:27.862 INFO [stdout] 79e5af3f0ab96e90ff735926274eed2d2b83d6e3d21f8ddb50a1978eb40467d2