Dec 04 20:59:34.348 INFO checking chriserin/artbot against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 20:59:34.348 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 20:59:34.763 INFO [stdout] 57f03ca22e3b594380b244eaa25e227bacb1b1518be4ddfb54e3fa192dde44bf
Dec 04 20:59:34.766 INFO running `"docker" "start" "-a" "57f03ca22e3b594380b244eaa25e227bacb1b1518be4ddfb54e3fa192dde44bf"`
Dec 04 20:59:35.411 INFO [stderr] usermod: no changes
Dec 04 20:59:35.564 INFO [stderr]     Checking idna v0.1.2
Dec 04 20:59:35.564 INFO [stderr]     Checking num-bigint v0.1.39
Dec 04 20:59:36.731 INFO [stderr]     Checking num-rational v0.1.38
Dec 04 20:59:37.899 INFO [stderr]     Checking url v1.5.0
Dec 04 20:59:38.271 INFO [stderr]     Checking num v0.1.39
Dec 04 20:59:38.271 INFO [stderr]     Checking image v0.13.0
Dec 04 20:59:40.283 INFO [stderr]     Checking hyper v0.10.12
Dec 04 20:59:44.899 INFO [stderr]     Checking iron v0.5.1
Dec 04 20:59:46.285 INFO [stderr]     Checking router v0.5.1
Dec 04 20:59:47.765 INFO [stderr]     Checking artbot v0.1.0 (/source)
Dec 04 20:59:50.535 INFO [stderr] warning: unused import: `std::fs::File`
Dec 04 20:59:50.535 INFO [stderr]   --> src/main.rs:14:5
Dec 04 20:59:50.535 INFO [stderr]    |
Dec 04 20:59:50.535 INFO [stderr] 14 | use std::fs::File;
Dec 04 20:59:50.535 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 04 20:59:50.535 INFO [stderr]    |
Dec 04 20:59:50.535 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 20:59:50.535 INFO [stderr] 
Dec 04 20:59:50.535 INFO [stderr] warning: unused import: `std::path::Path`
Dec 04 20:59:50.535 INFO [stderr]   --> src/main.rs:15:5
Dec 04 20:59:50.535 INFO [stderr]    |
Dec 04 20:59:50.535 INFO [stderr] 15 | use std::path::Path;
Dec 04 20:59:50.535 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 04 20:59:50.535 INFO [stderr] 
Dec 04 20:59:50.535 INFO [stderr] warning: unused import: `iron::mime`
Dec 04 20:59:50.535 INFO [stderr]    --> src/main.rs:158:13
Dec 04 20:59:50.535 INFO [stderr]     |
Dec 04 20:59:50.535 INFO [stderr] 158 |         use iron::mime;
Dec 04 20:59:50.535 INFO [stderr]     |             ^^^^^^^^^^
Dec 04 20:59:50.535 INFO [stderr] 
Dec 04 20:59:50.535 INFO [stderr] warning: unused import: `iron::mime`
Dec 04 20:59:50.535 INFO [stderr]    --> src/main.rs:170:13
Dec 04 20:59:50.535 INFO [stderr]     |
Dec 04 20:59:50.535 INFO [stderr] 170 |         use iron::mime;
Dec 04 20:59:50.535 INFO [stderr]     |             ^^^^^^^^^^
Dec 04 20:59:50.535 INFO [stderr] 
Dec 04 20:59:50.738 INFO [stderr] warning: value assigned to `r` is never read
Dec 04 20:59:50.738 INFO [stderr]   --> src/main.rs:64:17
Dec 04 20:59:50.738 INFO [stderr]    |
Dec 04 20:59:50.738 INFO [stderr] 64 |         let mut r = 0;
Dec 04 20:59:50.738 INFO [stderr]    |                 ^
Dec 04 20:59:50.738 INFO [stderr]    |
Dec 04 20:59:50.738 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 20:59:50.738 INFO [stderr] 
Dec 04 20:59:50.738 INFO [stderr] warning: value assigned to `g` is never read
Dec 04 20:59:50.738 INFO [stderr]   --> src/main.rs:65:17
Dec 04 20:59:50.739 INFO [stderr]    |
Dec 04 20:59:50.739 INFO [stderr] 65 |         let mut g = 0;
Dec 04 20:59:50.739 INFO [stderr]    |                 ^
Dec 04 20:59:50.739 INFO [stderr] 
Dec 04 20:59:50.739 INFO [stderr] warning: value assigned to `b` is never read
Dec 04 20:59:50.739 INFO [stderr]   --> src/main.rs:66:17
Dec 04 20:59:50.739 INFO [stderr]    |
Dec 04 20:59:50.739 INFO [stderr] 66 |         let mut b = 0;
Dec 04 20:59:50.739 INFO [stderr]    |                 ^
Dec 04 20:59:50.739 INFO [stderr] 
Dec 04 20:59:50.743 INFO [stderr] warning: unused variable: `req`
Dec 04 20:59:50.743 INFO [stderr]    --> src/main.rs:169:29
Dec 04 20:59:50.743 INFO [stderr]     |
Dec 04 20:59:50.743 INFO [stderr] 169 |     fn random_image_handler(req: &mut Request) -> IronResult<Response> {
Dec 04 20:59:50.744 INFO [stderr]     |                             ^^^ help: consider using `_req` instead
Dec 04 20:59:50.744 INFO [stderr]     |
Dec 04 20:59:50.744 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 20:59:50.744 INFO [stderr] 
Dec 04 20:59:50.755 INFO [stderr] warning: variable does not need to be mutable
Dec 04 20:59:50.755 INFO [stderr]   --> src/main.rs:41:9
Dec 04 20:59:50.755 INFO [stderr]    |
Dec 04 20:59:50.755 INFO [stderr] 41 |     let mut x_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 04 20:59:50.755 INFO [stderr]    |         ----^^^^^^^^
Dec 04 20:59:50.755 INFO [stderr]    |         |
Dec 04 20:59:50.755 INFO [stderr]    |         help: remove this `mut`
Dec 04 20:59:50.755 INFO [stderr]    |
Dec 04 20:59:50.755 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 20:59:50.755 INFO [stderr] 
Dec 04 20:59:50.755 INFO [stderr] warning: variable does not need to be mutable
Dec 04 20:59:50.755 INFO [stderr]   --> src/main.rs:42:9
Dec 04 20:59:50.755 INFO [stderr]    |
Dec 04 20:59:50.755 INFO [stderr] 42 |     let mut y_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 04 20:59:50.755 INFO [stderr]    |         ----^^^^^^^^
Dec 04 20:59:50.755 INFO [stderr]    |         |
Dec 04 20:59:50.755 INFO [stderr]    |         help: remove this `mut`
Dec 04 20:59:50.755 INFO [stderr] 
Dec 04 20:59:50.755 INFO [stderr] warning: variable does not need to be mutable
Dec 04 20:59:50.755 INFO [stderr]   --> src/main.rs:43:9
Dec 04 20:59:50.755 INFO [stderr]    |
Dec 04 20:59:50.755 INFO [stderr] 43 |     let mut color_adjust = xor_rand.gen_range(10.0, 256.0);
Dec 04 20:59:50.755 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 04 20:59:50.755 INFO [stderr]    |         |
Dec 04 20:59:50.755 INFO [stderr]    |         help: remove this `mut`
Dec 04 20:59:50.755 INFO [stderr] 
Dec 04 20:59:50.755 INFO [stderr] warning: variable does not need to be mutable
Dec 04 20:59:50.755 INFO [stderr]   --> src/main.rs:45:9
Dec 04 20:59:50.755 INFO [stderr]    |
Dec 04 20:59:50.755 INFO [stderr] 45 |     let mut julia_adjustor_x = xor_rand.gen_range(-0.6, 0.6);
Dec 04 20:59:50.755 INFO [stderr]    |         ----^^^^^^^^^^^^^^^^
Dec 04 20:59:50.755 INFO [stderr]    |         |
Dec 04 20:59:50.755 INFO [stderr]    |         help: remove this `mut`
Dec 04 20:59:50.755 INFO [stderr] 
Dec 04 20:59:50.763 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 20:59:50.763 INFO [stderr]    --> src/main.rs:165:9
Dec 04 20:59:50.763 INFO [stderr]     |
Dec 04 20:59:50.763 INFO [stderr] 165 |         image_rgb.save(&mut bytes, image::PNG);
Dec 04 20:59:50.763 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 20:59:50.763 INFO [stderr]     |
Dec 04 20:59:50.763 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 20:59:50.763 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 20:59:50.763 INFO [stderr] 
Dec 04 20:59:50.763 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 20:59:50.763 INFO [stderr]    --> src/main.rs:178:9
Dec 04 20:59:50.763 INFO [stderr]     |
Dec 04 20:59:50.763 INFO [stderr] 178 |         image_rgb.save(&mut bytes, image::PNG);
Dec 04 20:59:50.763 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 20:59:50.763 INFO [stderr]     |
Dec 04 20:59:50.763 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 20:59:50.763 INFO [stderr] 
Dec 04 20:59:50.815 INFO [stderr] warning: unused import: `std::fs::File`
Dec 04 20:59:50.815 INFO [stderr]   --> src/main.rs:14:5
Dec 04 20:59:50.815 INFO [stderr]    |
Dec 04 20:59:50.815 INFO [stderr] 14 | use std::fs::File;
Dec 04 20:59:50.815 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 04 20:59:50.815 INFO [stderr]    |
Dec 04 20:59:50.815 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 04 20:59:50.820 INFO [stderr] 
Dec 04 20:59:50.820 INFO [stderr] warning: unused import: `std::path::Path`
Dec 04 20:59:50.820 INFO [stderr]   --> src/main.rs:15:5
Dec 04 20:59:50.820 INFO [stderr]    |
Dec 04 20:59:50.820 INFO [stderr] 15 | use std::path::Path;
Dec 04 20:59:50.820 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 04 20:59:50.820 INFO [stderr] 
Dec 04 20:59:50.820 INFO [stderr] warning: unused import: `iron::mime`
Dec 04 20:59:50.820 INFO [stderr]    --> src/main.rs:158:13
Dec 04 20:59:50.820 INFO [stderr]     |
Dec 04 20:59:50.820 INFO [stderr] 158 |         use iron::mime;
Dec 04 20:59:50.820 INFO [stderr]     |             ^^^^^^^^^^
Dec 04 20:59:50.820 INFO [stderr] 
Dec 04 20:59:50.820 INFO [stderr] warning: unused import: `iron::mime`
Dec 04 20:59:50.820 INFO [stderr]    --> src/main.rs:170:13
Dec 04 20:59:50.820 INFO [stderr]     |
Dec 04 20:59:50.820 INFO [stderr] 170 |         use iron::mime;
Dec 04 20:59:50.820 INFO [stderr]     |             ^^^^^^^^^^
Dec 04 20:59:50.820 INFO [stderr] 
Dec 04 20:59:50.950 INFO [stderr] warning: value assigned to `r` is never read
Dec 04 20:59:50.950 INFO [stderr]   --> src/main.rs:64:17
Dec 04 20:59:50.950 INFO [stderr]    |
Dec 04 20:59:50.950 INFO [stderr] 64 |         let mut r = 0;
Dec 04 20:59:50.950 INFO [stderr]    |                 ^
Dec 04 20:59:50.950 INFO [stderr]    |
Dec 04 20:59:50.950 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 20:59:50.950 INFO [stderr] 
Dec 04 20:59:50.950 INFO [stderr] warning: value assigned to `g` is never read
Dec 04 20:59:50.950 INFO [stderr]   --> src/main.rs:65:17
Dec 04 20:59:50.950 INFO [stderr]    |
Dec 04 20:59:50.950 INFO [stderr] 65 |         let mut g = 0;
Dec 04 20:59:50.950 INFO [stderr]    |                 ^
Dec 04 20:59:50.950 INFO [stderr] 
Dec 04 20:59:50.950 INFO [stderr] warning: value assigned to `b` is never read
Dec 04 20:59:50.950 INFO [stderr]   --> src/main.rs:66:17
Dec 04 20:59:50.950 INFO [stderr]    |
Dec 04 20:59:50.950 INFO [stderr] 66 |         let mut b = 0;
Dec 04 20:59:50.950 INFO [stderr]    |                 ^
Dec 04 20:59:50.950 INFO [stderr] 
Dec 04 20:59:50.950 INFO [stderr] warning: unused variable: `req`
Dec 04 20:59:50.950 INFO [stderr]    --> src/main.rs:169:29
Dec 04 20:59:50.950 INFO [stderr]     |
Dec 04 20:59:50.950 INFO [stderr] 169 |     fn random_image_handler(req: &mut Request) -> IronResult<Response> {
Dec 04 20:59:50.950 INFO [stderr]     |                             ^^^ help: consider using `_req` instead
Dec 04 20:59:50.950 INFO [stderr]     |
Dec 04 20:59:50.950 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 20:59:50.950 INFO [stderr] 
Dec 04 20:59:50.964 INFO [stderr] warning: variable does not need to be mutable
Dec 04 20:59:50.964 INFO [stderr]   --> src/main.rs:41:9
Dec 04 20:59:50.964 INFO [stderr]    |
Dec 04 20:59:50.964 INFO [stderr] 41 |     let mut x_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 04 20:59:50.964 INFO [stderr]    |         ----^^^^^^^^
Dec 04 20:59:50.964 INFO [stderr]    |         |
Dec 04 20:59:50.964 INFO [stderr]    |         help: remove this `mut`
Dec 04 20:59:50.964 INFO [stderr]    |
Dec 04 20:59:50.964 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 20:59:50.964 INFO [stderr] 
Dec 04 20:59:50.964 INFO [stderr] warning: variable does not need to be mutable
Dec 04 20:59:50.964 INFO [stderr]   --> src/main.rs:42:9
Dec 04 20:59:50.964 INFO [stderr]    |
Dec 04 20:59:50.964 INFO [stderr] 42 |     let mut y_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 04 20:59:50.964 INFO [stderr]    |         ----^^^^^^^^
Dec 04 20:59:50.964 INFO [stderr]    |         |
Dec 04 20:59:50.964 INFO [stderr]    |         help: remove this `mut`
Dec 04 20:59:50.964 INFO [stderr] 
Dec 04 20:59:50.964 INFO [stderr] warning: variable does not need to be mutable
Dec 04 20:59:50.964 INFO [stderr]   --> src/main.rs:43:9
Dec 04 20:59:50.964 INFO [stderr]    |
Dec 04 20:59:50.964 INFO [stderr] 43 |     let mut color_adjust = xor_rand.gen_range(10.0, 256.0);
Dec 04 20:59:50.964 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 04 20:59:50.964 INFO [stderr]    |         |
Dec 04 20:59:50.964 INFO [stderr]    |         help: remove this `mut`
Dec 04 20:59:50.964 INFO [stderr] 
Dec 04 20:59:50.964 INFO [stderr] warning: variable does not need to be mutable
Dec 04 20:59:50.964 INFO [stderr]   --> src/main.rs:45:9
Dec 04 20:59:50.964 INFO [stderr]    |
Dec 04 20:59:50.964 INFO [stderr] 45 |     let mut julia_adjustor_x = xor_rand.gen_range(-0.6, 0.6);
Dec 04 20:59:50.964 INFO [stderr]    |         ----^^^^^^^^^^^^^^^^
Dec 04 20:59:50.964 INFO [stderr]    |         |
Dec 04 20:59:50.964 INFO [stderr]    |         help: remove this `mut`
Dec 04 20:59:50.964 INFO [stderr] 
Dec 04 20:59:50.971 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 20:59:50.972 INFO [stderr]    --> src/main.rs:165:9
Dec 04 20:59:50.972 INFO [stderr]     |
Dec 04 20:59:50.972 INFO [stderr] 165 |         image_rgb.save(&mut bytes, image::PNG);
Dec 04 20:59:50.972 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 20:59:50.972 INFO [stderr]     |
Dec 04 20:59:50.972 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 20:59:50.972 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 20:59:50.972 INFO [stderr] 
Dec 04 20:59:50.972 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 20:59:50.972 INFO [stderr]    --> src/main.rs:178:9
Dec 04 20:59:50.972 INFO [stderr]     |
Dec 04 20:59:50.972 INFO [stderr] 178 |         image_rgb.save(&mut bytes, image::PNG);
Dec 04 20:59:50.972 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 20:59:50.972 INFO [stderr]     |
Dec 04 20:59:50.972 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 20:59:50.972 INFO [stderr] 
Dec 04 20:59:51.025 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.59s
Dec 04 20:59:51.032 INFO [stderr] su: No module specific data is present
Dec 04 20:59:51.485 INFO running `"docker" "inspect" "57f03ca22e3b594380b244eaa25e227bacb1b1518be4ddfb54e3fa192dde44bf"`
Dec 04 20:59:51.803 INFO running `"docker" "rm" "-f" "57f03ca22e3b594380b244eaa25e227bacb1b1518be4ddfb54e3fa192dde44bf"`
Dec 04 20:59:52.010 INFO [stdout] 57f03ca22e3b594380b244eaa25e227bacb1b1518be4ddfb54e3fa192dde44bf