Dec 19 19:04:17.756 INFO checking chriserin/artbot against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:04:17.756 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/chriserin/artbot:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:04:18.138 INFO [stdout] 7bf5adabbc349cf6f0c1ceb852c39d070c674005ac77ee4e8439e96799144144
Dec 19 19:04:18.146 INFO running `"docker" "start" "-a" "7bf5adabbc349cf6f0c1ceb852c39d070c674005ac77ee4e8439e96799144144"`
Dec 19 19:04:19.760 INFO [stderr]     Checking rayon-core v1.0.2
Dec 19 19:04:19.764 INFO [stderr]     Checking num-bigint v0.1.39
Dec 19 19:04:19.764 INFO [stderr]     Checking url v1.5.0
Dec 19 19:04:19.776 INFO [stderr]     Checking png v0.7.0
Dec 19 19:04:20.646 INFO [stderr]     Checking rayon v0.7.1
Dec 19 19:04:21.100 INFO [stderr]     Checking num-rational v0.1.38
Dec 19 19:04:21.920 INFO [stderr]     Checking hyper v0.10.12
Dec 19 19:04:22.544 INFO [stderr]     Checking num v0.1.39
Dec 19 19:04:22.864 INFO [stderr]     Checking jpeg-decoder v0.1.12
Dec 19 19:04:24.425 INFO [stderr]     Checking image v0.13.0
Dec 19 19:04:26.980 INFO [stderr]     Checking iron v0.5.1
Dec 19 19:04:27.731 INFO [stderr]     Checking router v0.5.1
Dec 19 19:04:28.980 INFO [stderr]     Checking artbot v0.1.0 (/opt/crater/workdir)
Dec 19 19:04:29.764 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 19:04:29.764 INFO [stderr]   --> src/main.rs:14:5
Dec 19 19:04:29.764 INFO [stderr]    |
Dec 19 19:04:29.764 INFO [stderr] 14 | use std::fs::File;
Dec 19 19:04:29.764 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 19:04:29.764 INFO [stderr]    |
Dec 19 19:04:29.764 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 19:04:29.764 INFO [stderr] 
Dec 19 19:04:29.764 INFO [stderr] warning: unused import: `std::path::Path`
Dec 19 19:04:29.764 INFO [stderr]   --> src/main.rs:15:5
Dec 19 19:04:29.764 INFO [stderr]    |
Dec 19 19:04:29.764 INFO [stderr] 15 | use std::path::Path;
Dec 19 19:04:29.764 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 19 19:04:29.764 INFO [stderr] 
Dec 19 19:04:29.764 INFO [stderr] warning: unused import: `iron::mime`
Dec 19 19:04:29.764 INFO [stderr]    --> src/main.rs:158:13
Dec 19 19:04:29.764 INFO [stderr]     |
Dec 19 19:04:29.764 INFO [stderr] 158 |         use iron::mime;
Dec 19 19:04:29.764 INFO [stderr]     |             ^^^^^^^^^^
Dec 19 19:04:29.764 INFO [stderr] 
Dec 19 19:04:29.764 INFO [stderr] warning: unused import: `iron::mime`
Dec 19 19:04:29.764 INFO [stderr]    --> src/main.rs:170:13
Dec 19 19:04:29.764 INFO [stderr]     |
Dec 19 19:04:29.764 INFO [stderr] 170 |         use iron::mime;
Dec 19 19:04:29.764 INFO [stderr]     |             ^^^^^^^^^^
Dec 19 19:04:29.764 INFO [stderr] 
Dec 19 19:04:29.784 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 19:04:29.784 INFO [stderr]   --> src/main.rs:14:5
Dec 19 19:04:29.784 INFO [stderr]    |
Dec 19 19:04:29.784 INFO [stderr] 14 | use std::fs::File;
Dec 19 19:04:29.784 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 19:04:29.784 INFO [stderr]    |
Dec 19 19:04:29.784 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 19:04:29.784 INFO [stderr] 
Dec 19 19:04:29.784 INFO [stderr] warning: unused import: `std::path::Path`
Dec 19 19:04:29.784 INFO [stderr]   --> src/main.rs:15:5
Dec 19 19:04:29.784 INFO [stderr]    |
Dec 19 19:04:29.784 INFO [stderr] 15 | use std::path::Path;
Dec 19 19:04:29.784 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 19 19:04:29.784 INFO [stderr] 
Dec 19 19:04:29.788 INFO [stderr] warning: unused import: `iron::mime`
Dec 19 19:04:29.788 INFO [stderr]    --> src/main.rs:158:13
Dec 19 19:04:29.788 INFO [stderr]     |
Dec 19 19:04:29.788 INFO [stderr] 158 |         use iron::mime;
Dec 19 19:04:29.788 INFO [stderr]     |             ^^^^^^^^^^
Dec 19 19:04:29.788 INFO [stderr] 
Dec 19 19:04:29.788 INFO [stderr] warning: unused import: `iron::mime`
Dec 19 19:04:29.788 INFO [stderr]    --> src/main.rs:170:13
Dec 19 19:04:29.788 INFO [stderr]     |
Dec 19 19:04:29.788 INFO [stderr] 170 |         use iron::mime;
Dec 19 19:04:29.788 INFO [stderr]     |             ^^^^^^^^^^
Dec 19 19:04:29.788 INFO [stderr] 
Dec 19 19:04:29.931 INFO [stderr] warning: value assigned to `r` is never read
Dec 19 19:04:29.931 INFO [stderr]   --> src/main.rs:64:17
Dec 19 19:04:29.931 INFO [stderr]    |
Dec 19 19:04:29.931 INFO [stderr] 64 |         let mut r = 0;
Dec 19 19:04:29.931 INFO [stderr]    |                 ^
Dec 19 19:04:29.931 INFO [stderr]    |
Dec 19 19:04:29.931 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 19:04:29.931 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:04:29.931 INFO [stderr] 
Dec 19 19:04:29.931 INFO [stderr] warning: value assigned to `g` is never read
Dec 19 19:04:29.931 INFO [stderr]   --> src/main.rs:65:17
Dec 19 19:04:29.931 INFO [stderr]    |
Dec 19 19:04:29.931 INFO [stderr] 65 |         let mut g = 0;
Dec 19 19:04:29.931 INFO [stderr]    |                 ^
Dec 19 19:04:29.931 INFO [stderr]    |
Dec 19 19:04:29.931 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:04:29.931 INFO [stderr] 
Dec 19 19:04:29.931 INFO [stderr] warning: value assigned to `b` is never read
Dec 19 19:04:29.931 INFO [stderr]   --> src/main.rs:66:17
Dec 19 19:04:29.931 INFO [stderr]    |
Dec 19 19:04:29.931 INFO [stderr] 66 |         let mut b = 0;
Dec 19 19:04:29.931 INFO [stderr]    |                 ^
Dec 19 19:04:29.931 INFO [stderr]    |
Dec 19 19:04:29.932 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:04:29.932 INFO [stderr] 
Dec 19 19:04:29.932 INFO [stderr] warning: unused variable: `req`
Dec 19 19:04:29.932 INFO [stderr]    --> src/main.rs:169:29
Dec 19 19:04:29.932 INFO [stderr]     |
Dec 19 19:04:29.932 INFO [stderr] 169 |     fn random_image_handler(req: &mut Request) -> IronResult<Response> {
Dec 19 19:04:29.932 INFO [stderr]     |                             ^^^ help: consider using `_req` instead
Dec 19 19:04:29.932 INFO [stderr]     |
Dec 19 19:04:29.932 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 19:04:29.932 INFO [stderr] 
Dec 19 19:04:29.954 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:04:29.954 INFO [stderr]   --> src/main.rs:41:9
Dec 19 19:04:29.954 INFO [stderr]    |
Dec 19 19:04:29.954 INFO [stderr] 41 |     let mut x_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 19 19:04:29.954 INFO [stderr]    |         ----^^^^^^^^
Dec 19 19:04:29.954 INFO [stderr]    |         |
Dec 19 19:04:29.954 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:04:29.954 INFO [stderr]    |
Dec 19 19:04:29.954 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 19:04:29.954 INFO [stderr] 
Dec 19 19:04:29.954 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:04:29.954 INFO [stderr]   --> src/main.rs:42:9
Dec 19 19:04:29.954 INFO [stderr]    |
Dec 19 19:04:29.954 INFO [stderr] 42 |     let mut y_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 19 19:04:29.954 INFO [stderr]    |         ----^^^^^^^^
Dec 19 19:04:29.954 INFO [stderr]    |         |
Dec 19 19:04:29.954 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:04:29.954 INFO [stderr] 
Dec 19 19:04:29.954 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:04:29.954 INFO [stderr]   --> src/main.rs:43:9
Dec 19 19:04:29.954 INFO [stderr]    |
Dec 19 19:04:29.954 INFO [stderr] 43 |     let mut color_adjust = xor_rand.gen_range(10.0, 256.0);
Dec 19 19:04:29.954 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 19:04:29.954 INFO [stderr]    |         |
Dec 19 19:04:29.954 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:04:29.954 INFO [stderr] 
Dec 19 19:04:29.954 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:04:29.954 INFO [stderr]   --> src/main.rs:45:9
Dec 19 19:04:29.954 INFO [stderr]    |
Dec 19 19:04:29.954 INFO [stderr] 45 |     let mut julia_adjustor_x = xor_rand.gen_range(-0.6, 0.6);
Dec 19 19:04:29.954 INFO [stderr]    |         ----^^^^^^^^^^^^^^^^
Dec 19 19:04:29.954 INFO [stderr]    |         |
Dec 19 19:04:29.954 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:04:29.954 INFO [stderr] 
Dec 19 19:04:29.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:04:29.964 INFO [stderr]    --> src/main.rs:165:9
Dec 19 19:04:29.964 INFO [stderr]     |
Dec 19 19:04:29.964 INFO [stderr] 165 |         image_rgb.save(&mut bytes, image::PNG);
Dec 19 19:04:29.964 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:04:29.964 INFO [stderr]     |
Dec 19 19:04:29.964 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 19:04:29.964 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:04:29.964 INFO [stderr] 
Dec 19 19:04:29.964 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:04:29.964 INFO [stderr]    --> src/main.rs:178:9
Dec 19 19:04:29.964 INFO [stderr]     |
Dec 19 19:04:29.964 INFO [stderr] 178 |         image_rgb.save(&mut bytes, image::PNG);
Dec 19 19:04:29.964 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:04:29.964 INFO [stderr]     |
Dec 19 19:04:29.964 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:04:29.964 INFO [stderr] 
Dec 19 19:04:29.964 INFO [stderr] warning: value assigned to `r` is never read
Dec 19 19:04:29.964 INFO [stderr]   --> src/main.rs:64:17
Dec 19 19:04:29.964 INFO [stderr]    |
Dec 19 19:04:29.964 INFO [stderr] 64 |         let mut r = 0;
Dec 19 19:04:29.964 INFO [stderr]    |                 ^
Dec 19 19:04:29.964 INFO [stderr]    |
Dec 19 19:04:29.964 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 19:04:29.964 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:04:29.964 INFO [stderr] 
Dec 19 19:04:29.964 INFO [stderr] warning: value assigned to `g` is never read
Dec 19 19:04:29.964 INFO [stderr]   --> src/main.rs:65:17
Dec 19 19:04:29.965 INFO [stderr]    |
Dec 19 19:04:29.965 INFO [stderr] 65 |         let mut g = 0;
Dec 19 19:04:29.965 INFO [stderr]    |                 ^
Dec 19 19:04:29.965 INFO [stderr]    |
Dec 19 19:04:29.965 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:04:29.965 INFO [stderr] 
Dec 19 19:04:29.965 INFO [stderr] warning: value assigned to `b` is never read
Dec 19 19:04:29.965 INFO [stderr]   --> src/main.rs:66:17
Dec 19 19:04:29.965 INFO [stderr]    |
Dec 19 19:04:29.965 INFO [stderr] 66 |         let mut b = 0;
Dec 19 19:04:29.965 INFO [stderr]    |                 ^
Dec 19 19:04:29.965 INFO [stderr]    |
Dec 19 19:04:29.965 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:04:29.965 INFO [stderr] 
Dec 19 19:04:29.965 INFO [stderr] warning: unused variable: `req`
Dec 19 19:04:29.965 INFO [stderr]    --> src/main.rs:169:29
Dec 19 19:04:29.965 INFO [stderr]     |
Dec 19 19:04:29.965 INFO [stderr] 169 |     fn random_image_handler(req: &mut Request) -> IronResult<Response> {
Dec 19 19:04:29.965 INFO [stderr]     |                             ^^^ help: consider using `_req` instead
Dec 19 19:04:29.965 INFO [stderr]     |
Dec 19 19:04:29.965 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 19:04:29.965 INFO [stderr] 
Dec 19 19:04:29.996 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:04:29.996 INFO [stderr]   --> src/main.rs:41:9
Dec 19 19:04:29.996 INFO [stderr]    |
Dec 19 19:04:29.996 INFO [stderr] 41 |     let mut x_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 19 19:04:29.996 INFO [stderr]    |         ----^^^^^^^^
Dec 19 19:04:29.996 INFO [stderr]    |         |
Dec 19 19:04:29.996 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:04:29.996 INFO [stderr]    |
Dec 19 19:04:29.996 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 19:04:29.996 INFO [stderr] 
Dec 19 19:04:29.996 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:04:29.996 INFO [stderr]   --> src/main.rs:42:9
Dec 19 19:04:29.996 INFO [stderr]    |
Dec 19 19:04:29.996 INFO [stderr] 42 |     let mut y_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 19 19:04:29.996 INFO [stderr]    |         ----^^^^^^^^
Dec 19 19:04:29.996 INFO [stderr]    |         |
Dec 19 19:04:29.996 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:04:29.996 INFO [stderr] 
Dec 19 19:04:29.996 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:04:29.996 INFO [stderr]   --> src/main.rs:43:9
Dec 19 19:04:29.996 INFO [stderr]    |
Dec 19 19:04:29.996 INFO [stderr] 43 |     let mut color_adjust = xor_rand.gen_range(10.0, 256.0);
Dec 19 19:04:29.996 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 19:04:29.996 INFO [stderr]    |         |
Dec 19 19:04:29.996 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:04:29.996 INFO [stderr] 
Dec 19 19:04:29.996 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:04:29.996 INFO [stderr]   --> src/main.rs:45:9
Dec 19 19:04:29.996 INFO [stderr]    |
Dec 19 19:04:29.996 INFO [stderr] 45 |     let mut julia_adjustor_x = xor_rand.gen_range(-0.6, 0.6);
Dec 19 19:04:29.996 INFO [stderr]    |         ----^^^^^^^^^^^^^^^^
Dec 19 19:04:29.996 INFO [stderr]    |         |
Dec 19 19:04:29.997 INFO [stderr]    |         help: remove this `mut`
Dec 19 19:04:29.997 INFO [stderr] 
Dec 19 19:04:30.024 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:04:30.024 INFO [stderr]    --> src/main.rs:165:9
Dec 19 19:04:30.024 INFO [stderr]     |
Dec 19 19:04:30.024 INFO [stderr] 165 |         image_rgb.save(&mut bytes, image::PNG);
Dec 19 19:04:30.024 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:04:30.024 INFO [stderr]     |
Dec 19 19:04:30.024 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 19:04:30.024 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:04:30.024 INFO [stderr] 
Dec 19 19:04:30.024 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:04:30.024 INFO [stderr]    --> src/main.rs:178:9
Dec 19 19:04:30.024 INFO [stderr]     |
Dec 19 19:04:30.024 INFO [stderr] 178 |         image_rgb.save(&mut bytes, image::PNG);
Dec 19 19:04:30.024 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:04:30.024 INFO [stderr]     |
Dec 19 19:04:30.024 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:04:30.024 INFO [stderr] 
Dec 19 19:04:30.075 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.47s
Dec 19 19:04:31.210 INFO running `"docker" "inspect" "7bf5adabbc349cf6f0c1ceb852c39d070c674005ac77ee4e8439e96799144144"`
Dec 19 19:04:31.432 INFO running `"docker" "rm" "-f" "7bf5adabbc349cf6f0c1ceb852c39d070c674005ac77ee4e8439e96799144144"`
Dec 19 19:04:31.595 INFO [stdout] 7bf5adabbc349cf6f0c1ceb852c39d070c674005ac77ee4e8439e96799144144