Dec 11 20:54:21.106 INFO checking chriserin/artbot against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 20:54:21.106 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-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 11 20:54:21.575 INFO [stdout] 6d0dadba46768412ec8bf69688ceaf8bf412a60c1f78d39a49754d0f7073905f
Dec 11 20:54:21.580 INFO running `"docker" "start" "-a" "6d0dadba46768412ec8bf69688ceaf8bf412a60c1f78d39a49754d0f7073905f"`
Dec 11 20:54:23.268 INFO [stderr] usermod: no changes
Dec 11 20:54:23.448 INFO [stderr]     Checking idna v0.1.2
Dec 11 20:54:23.448 INFO [stderr]     Checking num-bigint v0.1.39
Dec 11 20:54:25.215 INFO [stderr]     Checking num-rational v0.1.38
Dec 11 20:54:26.037 INFO [stderr]     Checking num v0.1.39
Dec 11 20:54:26.037 INFO [stderr]     Checking image v0.13.0
Dec 11 20:54:26.134 INFO [stderr]     Checking url v1.5.0
Dec 11 20:54:28.510 INFO [stderr]     Checking hyper v0.10.12
Dec 11 20:54:34.916 INFO [stderr]     Checking iron v0.5.1
Dec 11 20:54:36.408 INFO [stderr]     Checking router v0.5.1
Dec 11 20:54:37.900 INFO [stderr]     Checking artbot v0.1.0 (/source)
Dec 11 20:54:40.265 INFO [stderr] warning: unused import: `std::fs::File`
Dec 11 20:54:40.265 INFO [stderr]   --> src/main.rs:14:5
Dec 11 20:54:40.265 INFO [stderr]    |
Dec 11 20:54:40.265 INFO [stderr] 14 | use std::fs::File;
Dec 11 20:54:40.265 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 11 20:54:40.265 INFO [stderr]    |
Dec 11 20:54:40.265 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 20:54:40.265 INFO [stderr] 
Dec 11 20:54:40.265 INFO [stderr] warning: unused import: `std::path::Path`
Dec 11 20:54:40.265 INFO [stderr]   --> src/main.rs:15:5
Dec 11 20:54:40.265 INFO [stderr]    |
Dec 11 20:54:40.265 INFO [stderr] 15 | use std::path::Path;
Dec 11 20:54:40.265 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 11 20:54:40.265 INFO [stderr] 
Dec 11 20:54:40.265 INFO [stderr] warning: unused import: `iron::mime`
Dec 11 20:54:40.265 INFO [stderr]    --> src/main.rs:158:13
Dec 11 20:54:40.265 INFO [stderr]     |
Dec 11 20:54:40.265 INFO [stderr] 158 |         use iron::mime;
Dec 11 20:54:40.265 INFO [stderr]     |             ^^^^^^^^^^
Dec 11 20:54:40.265 INFO [stderr] 
Dec 11 20:54:40.265 INFO [stderr] warning: unused import: `iron::mime`
Dec 11 20:54:40.265 INFO [stderr]    --> src/main.rs:170:13
Dec 11 20:54:40.265 INFO [stderr]     |
Dec 11 20:54:40.265 INFO [stderr] 170 |         use iron::mime;
Dec 11 20:54:40.265 INFO [stderr]     |             ^^^^^^^^^^
Dec 11 20:54:40.265 INFO [stderr] 
Dec 11 20:54:40.404 INFO [stderr] warning: unused import: `std::fs::File`
Dec 11 20:54:40.404 INFO [stderr]   --> src/main.rs:14:5
Dec 11 20:54:40.404 INFO [stderr]    |
Dec 11 20:54:40.404 INFO [stderr] 14 | use std::fs::File;
Dec 11 20:54:40.404 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 11 20:54:40.404 INFO [stderr]    |
Dec 11 20:54:40.405 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 20:54:40.405 INFO [stderr] 
Dec 11 20:54:40.405 INFO [stderr] warning: unused import: `std::path::Path`
Dec 11 20:54:40.405 INFO [stderr]   --> src/main.rs:15:5
Dec 11 20:54:40.405 INFO [stderr]    |
Dec 11 20:54:40.405 INFO [stderr] 15 | use std::path::Path;
Dec 11 20:54:40.405 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 11 20:54:40.405 INFO [stderr] 
Dec 11 20:54:40.405 INFO [stderr] warning: unused import: `iron::mime`
Dec 11 20:54:40.405 INFO [stderr]    --> src/main.rs:158:13
Dec 11 20:54:40.405 INFO [stderr]     |
Dec 11 20:54:40.405 INFO [stderr] 158 |         use iron::mime;
Dec 11 20:54:40.405 INFO [stderr]     |             ^^^^^^^^^^
Dec 11 20:54:40.405 INFO [stderr] 
Dec 11 20:54:40.405 INFO [stderr] warning: unused import: `iron::mime`
Dec 11 20:54:40.405 INFO [stderr]    --> src/main.rs:170:13
Dec 11 20:54:40.405 INFO [stderr]     |
Dec 11 20:54:40.405 INFO [stderr] 170 |         use iron::mime;
Dec 11 20:54:40.405 INFO [stderr]     |             ^^^^^^^^^^
Dec 11 20:54:40.405 INFO [stderr] 
Dec 11 20:54:40.414 INFO [stderr] warning: value assigned to `r` is never read
Dec 11 20:54:40.414 INFO [stderr]   --> src/main.rs:64:17
Dec 11 20:54:40.414 INFO [stderr]    |
Dec 11 20:54:40.414 INFO [stderr] 64 |         let mut r = 0;
Dec 11 20:54:40.414 INFO [stderr]    |                 ^
Dec 11 20:54:40.415 INFO [stderr]    |
Dec 11 20:54:40.415 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 11 20:54:40.415 INFO [stderr] 
Dec 11 20:54:40.415 INFO [stderr] warning: value assigned to `g` is never read
Dec 11 20:54:40.415 INFO [stderr]   --> src/main.rs:65:17
Dec 11 20:54:40.415 INFO [stderr]    |
Dec 11 20:54:40.415 INFO [stderr] 65 |         let mut g = 0;
Dec 11 20:54:40.415 INFO [stderr]    |                 ^
Dec 11 20:54:40.415 INFO [stderr] 
Dec 11 20:54:40.415 INFO [stderr] warning: value assigned to `b` is never read
Dec 11 20:54:40.415 INFO [stderr]   --> src/main.rs:66:17
Dec 11 20:54:40.415 INFO [stderr]    |
Dec 11 20:54:40.415 INFO [stderr] 66 |         let mut b = 0;
Dec 11 20:54:40.415 INFO [stderr]    |                 ^
Dec 11 20:54:40.416 INFO [stderr] 
Dec 11 20:54:40.416 INFO [stderr] warning: unused variable: `req`
Dec 11 20:54:40.416 INFO [stderr]    --> src/main.rs:169:29
Dec 11 20:54:40.416 INFO [stderr]     |
Dec 11 20:54:40.416 INFO [stderr] 169 |     fn random_image_handler(req: &mut Request) -> IronResult<Response> {
Dec 11 20:54:40.416 INFO [stderr]     |                             ^^^ help: consider using `_req` instead
Dec 11 20:54:40.416 INFO [stderr]     |
Dec 11 20:54:40.416 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 20:54:40.416 INFO [stderr] 
Dec 11 20:54:40.428 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:54:40.428 INFO [stderr]   --> src/main.rs:41:9
Dec 11 20:54:40.428 INFO [stderr]    |
Dec 11 20:54:40.428 INFO [stderr] 41 |     let mut x_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 11 20:54:40.428 INFO [stderr]    |         ----^^^^^^^^
Dec 11 20:54:40.428 INFO [stderr]    |         |
Dec 11 20:54:40.428 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:54:40.429 INFO [stderr]    |
Dec 11 20:54:40.429 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 20:54:40.429 INFO [stderr] 
Dec 11 20:54:40.429 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:54:40.429 INFO [stderr]   --> src/main.rs:42:9
Dec 11 20:54:40.430 INFO [stderr]    |
Dec 11 20:54:40.430 INFO [stderr] 42 |     let mut y_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 11 20:54:40.430 INFO [stderr]    |         ----^^^^^^^^
Dec 11 20:54:40.430 INFO [stderr]    |         |
Dec 11 20:54:40.430 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:54:40.430 INFO [stderr] 
Dec 11 20:54:40.436 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:54:40.436 INFO [stderr]   --> src/main.rs:43:9
Dec 11 20:54:40.436 INFO [stderr]    |
Dec 11 20:54:40.436 INFO [stderr] 43 |     let mut color_adjust = xor_rand.gen_range(10.0, 256.0);
Dec 11 20:54:40.436 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 11 20:54:40.436 INFO [stderr]    |         |
Dec 11 20:54:40.436 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:54:40.436 INFO [stderr] 
Dec 11 20:54:40.436 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:54:40.436 INFO [stderr]   --> src/main.rs:45:9
Dec 11 20:54:40.436 INFO [stderr]    |
Dec 11 20:54:40.436 INFO [stderr] 45 |     let mut julia_adjustor_x = xor_rand.gen_range(-0.6, 0.6);
Dec 11 20:54:40.436 INFO [stderr]    |         ----^^^^^^^^^^^^^^^^
Dec 11 20:54:40.436 INFO [stderr]    |         |
Dec 11 20:54:40.436 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:54:40.436 INFO [stderr] 
Dec 11 20:54:40.437 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 20:54:40.438 INFO [stderr]    --> src/main.rs:165:9
Dec 11 20:54:40.438 INFO [stderr]     |
Dec 11 20:54:40.438 INFO [stderr] 165 |         image_rgb.save(&mut bytes, image::PNG);
Dec 11 20:54:40.438 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:54:40.438 INFO [stderr]     |
Dec 11 20:54:40.438 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 20:54:40.438 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 20:54:40.438 INFO [stderr] 
Dec 11 20:54:40.439 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 20:54:40.439 INFO [stderr]    --> src/main.rs:178:9
Dec 11 20:54:40.439 INFO [stderr]     |
Dec 11 20:54:40.439 INFO [stderr] 178 |         image_rgb.save(&mut bytes, image::PNG);
Dec 11 20:54:40.439 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:54:40.439 INFO [stderr]     |
Dec 11 20:54:40.440 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 20:54:40.440 INFO [stderr] 
Dec 11 20:54:40.552 INFO [stderr] warning: value assigned to `r` is never read
Dec 11 20:54:40.552 INFO [stderr]   --> src/main.rs:64:17
Dec 11 20:54:40.552 INFO [stderr]    |
Dec 11 20:54:40.552 INFO [stderr] 64 |         let mut r = 0;
Dec 11 20:54:40.552 INFO [stderr]    |                 ^
Dec 11 20:54:40.552 INFO [stderr]    |
Dec 11 20:54:40.552 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 11 20:54:40.552 INFO [stderr] 
Dec 11 20:54:40.552 INFO [stderr] warning: value assigned to `g` is never read
Dec 11 20:54:40.556 INFO [stderr]   --> src/main.rs:65:17
Dec 11 20:54:40.556 INFO [stderr]    |
Dec 11 20:54:40.556 INFO [stderr] 65 |         let mut g = 0;
Dec 11 20:54:40.556 INFO [stderr]    |                 ^
Dec 11 20:54:40.556 INFO [stderr] 
Dec 11 20:54:40.556 INFO [stderr] warning: value assigned to `b` is never read
Dec 11 20:54:40.556 INFO [stderr]   --> src/main.rs:66:17
Dec 11 20:54:40.556 INFO [stderr]    |
Dec 11 20:54:40.556 INFO [stderr] 66 |         let mut b = 0;
Dec 11 20:54:40.556 INFO [stderr]    |                 ^
Dec 11 20:54:40.556 INFO [stderr] 
Dec 11 20:54:40.556 INFO [stderr] warning: unused variable: `req`
Dec 11 20:54:40.556 INFO [stderr]    --> src/main.rs:169:29
Dec 11 20:54:40.556 INFO [stderr]     |
Dec 11 20:54:40.556 INFO [stderr] 169 |     fn random_image_handler(req: &mut Request) -> IronResult<Response> {
Dec 11 20:54:40.556 INFO [stderr]     |                             ^^^ help: consider using `_req` instead
Dec 11 20:54:40.556 INFO [stderr]     |
Dec 11 20:54:40.556 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 20:54:40.556 INFO [stderr] 
Dec 11 20:54:40.567 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:54:40.567 INFO [stderr]   --> src/main.rs:41:9
Dec 11 20:54:40.567 INFO [stderr]    |
Dec 11 20:54:40.567 INFO [stderr] 41 |     let mut x_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 11 20:54:40.567 INFO [stderr]    |         ----^^^^^^^^
Dec 11 20:54:40.567 INFO [stderr]    |         |
Dec 11 20:54:40.567 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:54:40.567 INFO [stderr]    |
Dec 11 20:54:40.567 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 20:54:40.567 INFO [stderr] 
Dec 11 20:54:40.567 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:54:40.567 INFO [stderr]   --> src/main.rs:42:9
Dec 11 20:54:40.567 INFO [stderr]    |
Dec 11 20:54:40.567 INFO [stderr] 42 |     let mut y_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 11 20:54:40.567 INFO [stderr]    |         ----^^^^^^^^
Dec 11 20:54:40.567 INFO [stderr]    |         |
Dec 11 20:54:40.567 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:54:40.567 INFO [stderr] 
Dec 11 20:54:40.567 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:54:40.567 INFO [stderr]   --> src/main.rs:43:9
Dec 11 20:54:40.567 INFO [stderr]    |
Dec 11 20:54:40.567 INFO [stderr] 43 |     let mut color_adjust = xor_rand.gen_range(10.0, 256.0);
Dec 11 20:54:40.567 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 11 20:54:40.567 INFO [stderr]    |         |
Dec 11 20:54:40.567 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:54:40.567 INFO [stderr] 
Dec 11 20:54:40.567 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:54:40.567 INFO [stderr]   --> src/main.rs:45:9
Dec 11 20:54:40.567 INFO [stderr]    |
Dec 11 20:54:40.567 INFO [stderr] 45 |     let mut julia_adjustor_x = xor_rand.gen_range(-0.6, 0.6);
Dec 11 20:54:40.567 INFO [stderr]    |         ----^^^^^^^^^^^^^^^^
Dec 11 20:54:40.567 INFO [stderr]    |         |
Dec 11 20:54:40.567 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:54:40.567 INFO [stderr] 
Dec 11 20:54:40.573 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 20:54:40.573 INFO [stderr]    --> src/main.rs:165:9
Dec 11 20:54:40.573 INFO [stderr]     |
Dec 11 20:54:40.573 INFO [stderr] 165 |         image_rgb.save(&mut bytes, image::PNG);
Dec 11 20:54:40.573 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:54:40.573 INFO [stderr]     |
Dec 11 20:54:40.573 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 20:54:40.573 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 20:54:40.573 INFO [stderr] 
Dec 11 20:54:40.573 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 20:54:40.573 INFO [stderr]    --> src/main.rs:178:9
Dec 11 20:54:40.573 INFO [stderr]     |
Dec 11 20:54:40.573 INFO [stderr] 178 |         image_rgb.save(&mut bytes, image::PNG);
Dec 11 20:54:40.573 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 20:54:40.573 INFO [stderr]     |
Dec 11 20:54:40.573 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 20:54:40.573 INFO [stderr] 
Dec 11 20:54:40.605 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.31s
Dec 11 20:54:40.616 INFO [stderr] su: No module specific data is present
Dec 11 20:54:41.316 INFO running `"docker" "inspect" "6d0dadba46768412ec8bf69688ceaf8bf412a60c1f78d39a49754d0f7073905f"`
Dec 11 20:54:41.582 INFO running `"docker" "rm" "-f" "6d0dadba46768412ec8bf69688ceaf8bf412a60c1f78d39a49754d0f7073905f"`
Dec 11 20:54:41.832 INFO [stdout] 6d0dadba46768412ec8bf69688ceaf8bf412a60c1f78d39a49754d0f7073905f