Dec 17 17:59:57.896 INFO checking pepeul1191/rust-tutorial against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 17:59:57.897 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/pepeul1191/rust-tutorial:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 17:59:58.308 INFO [stdout] 0c431e32157c538dc010a01e1e9fa03a78892af5da32abcf2b4873ba21f6f819
Dec 17 17:59:58.314 INFO running `"docker" "start" "-a" "0c431e32157c538dc010a01e1e9fa03a78892af5da32abcf2b4873ba21f6f819"`
Dec 17 17:59:59.872 INFO [stderr]     Checking groupable v0.2.0
Dec 17 17:59:59.904 INFO [stderr]     Checking mustache v0.8.2
Dec 17 17:59:59.904 INFO [stderr]     Checking hyper v0.10.13
Dec 17 18:00:03.987 INFO [stderr]     Checking nickel v0.10.1
Dec 17 18:00:05.955 INFO [stderr]     Checking nickel-demo v0.1.0 (/opt/crater/workdir)
Dec 17 18:00:06.519 INFO [stderr] warning: unused variable: `is_it_true`
Dec 17 18:00:06.519 INFO [stderr]   --> src/main.rs:11:7
Dec 17 18:00:06.519 INFO [stderr]    |
Dec 17 18:00:06.520 INFO [stderr] 11 |   let is_it_true: bool = true;
Dec 17 18:00:06.520 INFO [stderr]    |       ^^^^^^^^^^ help: consider using `_is_it_true` instead
Dec 17 18:00:06.520 INFO [stderr]    |
Dec 17 18:00:06.520 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 18:00:06.521 INFO [stderr] 
Dec 17 18:00:06.521 INFO [stderr] warning: unused variable: `let_x`
Dec 17 18:00:06.521 INFO [stderr]   --> src/main.rs:12:7
Dec 17 18:00:06.522 INFO [stderr]    |
Dec 17 18:00:06.522 INFO [stderr] 12 |   let let_x: char = 'x';
Dec 17 18:00:06.522 INFO [stderr]    |       ^^^^^ help: consider using `_let_x` instead
Dec 17 18:00:06.522 INFO [stderr] 
Dec 17 18:00:06.526 INFO [stderr] warning: unused variable: `is_it_true`
Dec 17 18:00:06.527 INFO [stderr]   --> src/main.rs:11:7
Dec 17 18:00:06.527 INFO [stderr]    |
Dec 17 18:00:06.527 INFO [stderr] 11 |   let is_it_true: bool = true;
Dec 17 18:00:06.528 INFO [stderr]    |       ^^^^^^^^^^ help: consider using `_is_it_true` instead
Dec 17 18:00:06.528 INFO [stderr]    |
Dec 17 18:00:06.528 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 18:00:06.528 INFO [stderr] 
Dec 17 18:00:06.529 INFO [stderr] warning: unused variable: `let_x`
Dec 17 18:00:06.529 INFO [stderr]   --> src/main.rs:12:7
Dec 17 18:00:06.529 INFO [stderr]    |
Dec 17 18:00:06.529 INFO [stderr] 12 |   let let_x: char = 'x';
Dec 17 18:00:06.530 INFO [stderr]    |       ^^^^^ help: consider using `_let_x` instead
Dec 17 18:00:06.530 INFO [stderr] 
Dec 17 18:00:06.537 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:00:06.537 INFO [stderr]   --> src/main.rs:10:7
Dec 17 18:00:06.538 INFO [stderr]    |
Dec 17 18:00:06.538 INFO [stderr] 10 |   let mut num: i32 = 10;
Dec 17 18:00:06.538 INFO [stderr]    |       ----^^^
Dec 17 18:00:06.538 INFO [stderr]    |       |
Dec 17 18:00:06.539 INFO [stderr]    |       help: remove this `mut`
Dec 17 18:00:06.539 INFO [stderr]    |
Dec 17 18:00:06.539 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 18:00:06.540 INFO [stderr] 
Dec 17 18:00:06.541 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:00:06.542 INFO [stderr]   --> src/main.rs:10:7
Dec 17 18:00:06.542 INFO [stderr]    |
Dec 17 18:00:06.542 INFO [stderr] 10 |   let mut num: i32 = 10;
Dec 17 18:00:06.543 INFO [stderr]    |       ----^^^
Dec 17 18:00:06.543 INFO [stderr]    |       |
Dec 17 18:00:06.543 INFO [stderr]    |       help: remove this `mut`
Dec 17 18:00:06.543 INFO [stderr]    |
Dec 17 18:00:06.544 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 18:00:06.544 INFO [stderr] 
Dec 17 18:00:06.545 INFO [stderr] warning: function is never used: `func2`
Dec 17 18:00:06.546 INFO [stderr]  --> src/constants.rs:2:2
Dec 17 18:00:06.546 INFO [stderr]   |
Dec 17 18:00:06.546 INFO [stderr] 2 |     pub fn func2() {
Dec 17 18:00:06.546 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 17 18:00:06.547 INFO [stderr]   |
Dec 17 18:00:06.547 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 18:00:06.547 INFO [stderr] 
Dec 17 18:00:06.547 INFO [stderr] warning: function is never used: `goodbye`
Dec 17 18:00:06.548 INFO [stderr]  --> src/english/farewells.rs:1:1
Dec 17 18:00:06.548 INFO [stderr]   |
Dec 17 18:00:06.548 INFO [stderr] 1 | fn goodbye() -> String {
Dec 17 18:00:06.548 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:00:06.548 INFO [stderr] 
Dec 17 18:00:06.549 INFO [stderr] warning: function is never used: `hello`
Dec 17 18:00:06.549 INFO [stderr]  --> src/japanese/greetings.rs:1:1
Dec 17 18:00:06.549 INFO [stderr]   |
Dec 17 18:00:06.549 INFO [stderr] 1 | fn hello() -> String {
Dec 17 18:00:06.550 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 17 18:00:06.550 INFO [stderr] warning: function is never used: `func2`
Dec 17 18:00:06.550 INFO [stderr]  --> src/constants.rs:2:2
Dec 17 18:00:06.550 INFO [stderr]   |
Dec 17 18:00:06.551 INFO [stderr] 2 |     pub fn func2() {
Dec 17 18:00:06.551 INFO [stderr]   |     ^^^^^^^^^^^^^^
Dec 17 18:00:06.551 INFO [stderr]   |
Dec 17 18:00:06.551 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 18:00:06.551 INFO [stderr] 
Dec 17 18:00:06.552 INFO [stderr] warning: function is never used: `goodbye`
Dec 17 18:00:06.552 INFO [stderr]  --> src/english/farewells.rs:1:1
Dec 17 18:00:06.552 INFO [stderr]   |
Dec 17 18:00:06.552 INFO [stderr] 1 | fn goodbye() -> String {
Dec 17 18:00:06.553 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:00:06.553 INFO [stderr] 
Dec 17 18:00:06.553 INFO [stderr] warning: function is never used: `hello`
Dec 17 18:00:06.553 INFO [stderr]  --> src/japanese/greetings.rs:1:1
Dec 17 18:00:06.554 INFO [stderr]   |
Dec 17 18:00:06.554 INFO [stderr] 1 | fn hello() -> String {
Dec 17 18:00:06.554 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 17 18:00:06.555 INFO [stderr] 
Dec 17 18:00:06.555 INFO [stderr] warning: function is never used: `goodbye`
Dec 17 18:00:06.555 INFO [stderr]  --> src/japanese/farewells.rs:1:1
Dec 17 18:00:06.555 INFO [stderr]   |
Dec 17 18:00:06.556 INFO [stderr] 1 | fn goodbye() -> String {
Dec 17 18:00:06.556 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:00:06.556 INFO [stderr] 
Dec 17 18:00:06.556 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 18:00:06.557 INFO [stderr]   --> src/main.rs:32:3
Dec 17 18:00:06.557 INFO [stderr]    |
Dec 17 18:00:06.557 INFO [stderr] 32 |   server.listen("127.0.0.1:6767");
Dec 17 18:00:06.558 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:00:06.558 INFO [stderr]    |
Dec 17 18:00:06.558 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 18:00:06.558 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 18:00:06.559 INFO [stderr] 
Dec 17 18:00:06.559 INFO [stderr] 
Dec 17 18:00:06.559 INFO [stderr] warning: function is never used: `goodbye`
Dec 17 18:00:06.559 INFO [stderr]  --> src/japanese/farewells.rs:1:1
Dec 17 18:00:06.560 INFO [stderr]   |
Dec 17 18:00:06.560 INFO [stderr] 1 | fn goodbye() -> String {
Dec 17 18:00:06.560 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:00:06.560 INFO [stderr] 
Dec 17 18:00:06.561 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 18:00:06.561 INFO [stderr]   --> src/main.rs:32:3
Dec 17 18:00:06.562 INFO [stderr]    |
Dec 17 18:00:06.562 INFO [stderr] 32 |   server.listen("127.0.0.1:6767");
Dec 17 18:00:06.562 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 18:00:06.562 INFO [stderr]    |
Dec 17 18:00:06.563 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 18:00:06.563 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 18:00:06.563 INFO [stderr] 
Dec 17 18:00:06.628 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.90s
Dec 17 18:00:07.937 INFO running `"docker" "inspect" "0c431e32157c538dc010a01e1e9fa03a78892af5da32abcf2b4873ba21f6f819"`
Dec 17 18:00:08.200 INFO running `"docker" "rm" "-f" "0c431e32157c538dc010a01e1e9fa03a78892af5da32abcf2b4873ba21f6f819"`
Dec 17 18:00:08.540 INFO [stdout] 0c431e32157c538dc010a01e1e9fa03a78892af5da32abcf2b4873ba21f6f819