Dec 17 20:24:59.767 INFO checking luki/2do against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 20:24:59.767 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/luki/2do:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:24:59.920 INFO [stdout] 407ac38624177f5da617b96f3a38ffe88cfc4d2ed42c59a5156f707f420406f1
Dec 17 20:24:59.926 INFO running `"docker" "start" "-a" "407ac38624177f5da617b96f3a38ffe88cfc4d2ed42c59a5156f707f420406f1"`
Dec 17 20:25:00.496 INFO [stderr]     Checking chrono v0.2.25
Dec 17 20:25:01.994 INFO [stderr]     Checking todo v0.1.0 (/opt/crater/workdir)
Dec 17 20:25:02.373 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:25:02.373 INFO [stderr]   --> src/main.rs:43:13
Dec 17 20:25:02.373 INFO [stderr]    |
Dec 17 20:25:02.373 INFO [stderr] 43 |         let mut content = read_from_file(file);
Dec 17 20:25:02.373 INFO [stderr]    |             ----^^^^^^^
Dec 17 20:25:02.373 INFO [stderr]    |             |
Dec 17 20:25:02.373 INFO [stderr]    |             help: remove this `mut`
Dec 17 20:25:02.373 INFO [stderr]    |
Dec 17 20:25:02.373 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 20:25:02.373 INFO [stderr] 
Dec 17 20:25:02.373 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:25:02.373 INFO [stderr]   --> src/main.rs:44:13
Dec 17 20:25:02.373 INFO [stderr]    |
Dec 17 20:25:02.373 INFO [stderr] 44 |         let mut content_vec: Vec<&str> = content.split("\n\n").collect();
Dec 17 20:25:02.373 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 17 20:25:02.373 INFO [stderr]    |             |
Dec 17 20:25:02.374 INFO [stderr]    |             help: remove this `mut`
Dec 17 20:25:02.374 INFO [stderr] 
Dec 17 20:25:02.380 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:25:02.380 INFO [stderr]   --> src/main.rs:81:9
Dec 17 20:25:02.380 INFO [stderr]    |
Dec 17 20:25:02.380 INFO [stderr] 81 |     let mut file = match File::create(format!("{}.{}", file_name, file_extension)) {
Dec 17 20:25:02.381 INFO [stderr]    |         ----^^^^
Dec 17 20:25:02.381 INFO [stderr]    |         |
Dec 17 20:25:02.381 INFO [stderr]    |         help: remove this `mut`
Dec 17 20:25:02.381 INFO [stderr] 
Dec 17 20:25:02.381 INFO [stderr] warning: method is never used: `save_as_file`
Dec 17 20:25:02.381 INFO [stderr]   --> src/main.rs:32:5
Dec 17 20:25:02.381 INFO [stderr]    |
Dec 17 20:25:02.381 INFO [stderr] 32 |     fn save_as_file(&self) {
Dec 17 20:25:02.381 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.381 INFO [stderr]    |
Dec 17 20:25:02.381 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 20:25:02.381 INFO [stderr] 
Dec 17 20:25:02.381 INFO [stderr] warning: function is never used: `create_file`
Dec 17 20:25:02.381 INFO [stderr]   --> src/main.rs:80:1
Dec 17 20:25:02.381 INFO [stderr]    |
Dec 17 20:25:02.381 INFO [stderr] 80 | fn create_file(file_name: &str, file_extension: &str) -> File {
Dec 17 20:25:02.381 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.381 INFO [stderr] 
Dec 17 20:25:02.381 INFO [stderr] warning: function is never used: `write_to_file`
Dec 17 20:25:02.381 INFO [stderr]    --> src/main.rs:105:1
Dec 17 20:25:02.381 INFO [stderr]     |
Dec 17 20:25:02.381 INFO [stderr] 105 | fn write_to_file(file: &mut File, content: &str) {
Dec 17 20:25:02.381 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.381 INFO [stderr] 
Dec 17 20:25:02.381 INFO [stderr] warning: function is never used: `override_file`
Dec 17 20:25:02.381 INFO [stderr]    --> src/main.rs:110:1
Dec 17 20:25:02.381 INFO [stderr]     |
Dec 17 20:25:02.381 INFO [stderr] 110 | fn override_file(file: &mut File, content: &str) {
Dec 17 20:25:02.381 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.384 INFO [stderr] 
Dec 17 20:25:02.391 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:25:02.391 INFO [stderr]    --> src/main.rs:107:5
Dec 17 20:25:02.391 INFO [stderr]     |
Dec 17 20:25:02.391 INFO [stderr] 107 |     file.write_all(content.as_bytes());
Dec 17 20:25:02.391 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.391 INFO [stderr]     |
Dec 17 20:25:02.391 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 20:25:02.391 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:25:02.391 INFO [stderr] 
Dec 17 20:25:02.391 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:25:02.391 INFO [stderr]    --> src/main.rs:111:5
Dec 17 20:25:02.391 INFO [stderr]     |
Dec 17 20:25:02.391 INFO [stderr] 111 |     file.write_all(content.as_bytes());
Dec 17 20:25:02.391 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.391 INFO [stderr]     |
Dec 17 20:25:02.391 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:25:02.391 INFO [stderr] 
Dec 17 20:25:02.497 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:25:02.497 INFO [stderr]   --> src/main.rs:43:13
Dec 17 20:25:02.497 INFO [stderr]    |
Dec 17 20:25:02.497 INFO [stderr] 43 |         let mut content = read_from_file(file);
Dec 17 20:25:02.497 INFO [stderr]    |             ----^^^^^^^
Dec 17 20:25:02.497 INFO [stderr]    |             |
Dec 17 20:25:02.497 INFO [stderr]    |             help: remove this `mut`
Dec 17 20:25:02.497 INFO [stderr]    |
Dec 17 20:25:02.497 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 20:25:02.497 INFO [stderr] 
Dec 17 20:25:02.497 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:25:02.497 INFO [stderr]   --> src/main.rs:44:13
Dec 17 20:25:02.497 INFO [stderr]    |
Dec 17 20:25:02.497 INFO [stderr] 44 |         let mut content_vec: Vec<&str> = content.split("\n\n").collect();
Dec 17 20:25:02.497 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 17 20:25:02.497 INFO [stderr]    |             |
Dec 17 20:25:02.497 INFO [stderr]    |             help: remove this `mut`
Dec 17 20:25:02.497 INFO [stderr] 
Dec 17 20:25:02.507 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:25:02.507 INFO [stderr]   --> src/main.rs:81:9
Dec 17 20:25:02.507 INFO [stderr]    |
Dec 17 20:25:02.507 INFO [stderr] 81 |     let mut file = match File::create(format!("{}.{}", file_name, file_extension)) {
Dec 17 20:25:02.507 INFO [stderr]    |         ----^^^^
Dec 17 20:25:02.507 INFO [stderr]    |         |
Dec 17 20:25:02.507 INFO [stderr]    |         help: remove this `mut`
Dec 17 20:25:02.507 INFO [stderr] 
Dec 17 20:25:02.524 INFO [stderr] warning: method is never used: `save_as_file`
Dec 17 20:25:02.524 INFO [stderr]   --> src/main.rs:32:5
Dec 17 20:25:02.524 INFO [stderr]    |
Dec 17 20:25:02.524 INFO [stderr] 32 |     fn save_as_file(&self) {
Dec 17 20:25:02.524 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.524 INFO [stderr]    |
Dec 17 20:25:02.524 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 20:25:02.524 INFO [stderr] 
Dec 17 20:25:02.524 INFO [stderr] warning: function is never used: `create_file`
Dec 17 20:25:02.524 INFO [stderr]   --> src/main.rs:80:1
Dec 17 20:25:02.524 INFO [stderr]    |
Dec 17 20:25:02.524 INFO [stderr] 80 | fn create_file(file_name: &str, file_extension: &str) -> File {
Dec 17 20:25:02.524 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.524 INFO [stderr] 
Dec 17 20:25:02.524 INFO [stderr] warning: function is never used: `write_to_file`
Dec 17 20:25:02.524 INFO [stderr]    --> src/main.rs:105:1
Dec 17 20:25:02.524 INFO [stderr]     |
Dec 17 20:25:02.524 INFO [stderr] 105 | fn write_to_file(file: &mut File, content: &str) {
Dec 17 20:25:02.524 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.524 INFO [stderr] 
Dec 17 20:25:02.524 INFO [stderr] warning: function is never used: `override_file`
Dec 17 20:25:02.524 INFO [stderr]    --> src/main.rs:110:1
Dec 17 20:25:02.524 INFO [stderr]     |
Dec 17 20:25:02.524 INFO [stderr] 110 | fn override_file(file: &mut File, content: &str) {
Dec 17 20:25:02.524 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.524 INFO [stderr] 
Dec 17 20:25:02.532 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:25:02.532 INFO [stderr]    --> src/main.rs:107:5
Dec 17 20:25:02.532 INFO [stderr]     |
Dec 17 20:25:02.532 INFO [stderr] 107 |     file.write_all(content.as_bytes());
Dec 17 20:25:02.532 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.532 INFO [stderr]     |
Dec 17 20:25:02.532 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 20:25:02.532 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:25:02.532 INFO [stderr] 
Dec 17 20:25:02.532 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:25:02.532 INFO [stderr]    --> src/main.rs:111:5
Dec 17 20:25:02.532 INFO [stderr]     |
Dec 17 20:25:02.532 INFO [stderr] 111 |     file.write_all(content.as_bytes());
Dec 17 20:25:02.532 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:25:02.532 INFO [stderr]     |
Dec 17 20:25:02.532 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:25:02.532 INFO [stderr] 
Dec 17 20:25:02.596 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
Dec 17 20:25:03.565 INFO running `"docker" "inspect" "407ac38624177f5da617b96f3a38ffe88cfc4d2ed42c59a5156f707f420406f1"`
Dec 17 20:25:03.874 INFO running `"docker" "rm" "-f" "407ac38624177f5da617b96f3a38ffe88cfc4d2ed42c59a5156f707f420406f1"`
Dec 17 20:25:04.107 INFO [stdout] 407ac38624177f5da617b96f3a38ffe88cfc4d2ed42c59a5156f707f420406f1