Dec 18 02:28:59.929 INFO checking chriserin/artbot against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 02:28:59.930 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 02:29:00.377 INFO [stdout] 6c7bd84375ba585d5fc1834e0237dcc32b8c38afe38ced2d2569c0d288753967
Dec 18 02:29:00.381 INFO running `"docker" "start" "-a" "6c7bd84375ba585d5fc1834e0237dcc32b8c38afe38ced2d2569c0d288753967"`
Dec 18 02:29:01.508 INFO [stderr]     Checking url v1.5.0
Dec 18 02:29:01.508 INFO [stderr]     Checking num v0.1.39
Dec 18 02:29:01.508 INFO [stderr]     Checking image v0.13.0
Dec 18 02:29:03.153 INFO [stderr]     Checking hyper v0.10.12
Dec 18 02:29:08.000 INFO [stderr]     Checking iron v0.5.1
Dec 18 02:29:08.816 INFO [stderr]     Checking router v0.5.1
Dec 18 02:29:09.416 INFO [stderr]     Checking artbot v0.1.0 (/opt/crater/workdir)
Dec 18 02:29:10.404 INFO [stderr] warning: unused import: `std::fs::File`
Dec 18 02:29:10.404 INFO [stderr]   --> src/main.rs:14:5
Dec 18 02:29:10.404 INFO [stderr]    |
Dec 18 02:29:10.404 INFO [stderr] 14 | use std::fs::File;
Dec 18 02:29:10.404 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 18 02:29:10.404 INFO [stderr]    |
Dec 18 02:29:10.404 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 02:29:10.404 INFO [stderr] 
Dec 18 02:29:10.404 INFO [stderr] warning: unused import: `std::path::Path`
Dec 18 02:29:10.404 INFO [stderr]   --> src/main.rs:15:5
Dec 18 02:29:10.404 INFO [stderr]    |
Dec 18 02:29:10.404 INFO [stderr] 15 | use std::path::Path;
Dec 18 02:29:10.404 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 18 02:29:10.404 INFO [stderr] 
Dec 18 02:29:10.404 INFO [stderr] warning: unused import: `iron::mime`
Dec 18 02:29:10.404 INFO [stderr]    --> src/main.rs:158:13
Dec 18 02:29:10.404 INFO [stderr]     |
Dec 18 02:29:10.404 INFO [stderr] 158 |         use iron::mime;
Dec 18 02:29:10.405 INFO [stderr]     |             ^^^^^^^^^^
Dec 18 02:29:10.405 INFO [stderr] 
Dec 18 02:29:10.405 INFO [stderr] warning: unused import: `iron::mime`
Dec 18 02:29:10.405 INFO [stderr]    --> src/main.rs:170:13
Dec 18 02:29:10.405 INFO [stderr]     |
Dec 18 02:29:10.405 INFO [stderr] 170 |         use iron::mime;
Dec 18 02:29:10.405 INFO [stderr]     |             ^^^^^^^^^^
Dec 18 02:29:10.405 INFO [stderr] 
Dec 18 02:29:10.548 INFO [stderr] warning: unused import: `std::fs::File`
Dec 18 02:29:10.548 INFO [stderr]   --> src/main.rs:14:5
Dec 18 02:29:10.548 INFO [stderr]    |
Dec 18 02:29:10.548 INFO [stderr] 14 | use std::fs::File;
Dec 18 02:29:10.548 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 18 02:29:10.548 INFO [stderr]    |
Dec 18 02:29:10.548 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 02:29:10.548 INFO [stderr] 
Dec 18 02:29:10.548 INFO [stderr] warning: unused import: `std::path::Path`
Dec 18 02:29:10.548 INFO [stderr]   --> src/main.rs:15:5
Dec 18 02:29:10.548 INFO [stderr]    |
Dec 18 02:29:10.548 INFO [stderr] 15 | use std::path::Path;
Dec 18 02:29:10.548 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 18 02:29:10.548 INFO [stderr] 
Dec 18 02:29:10.568 INFO [stderr] warning: unused import: `iron::mime`
Dec 18 02:29:10.568 INFO [stderr]    --> src/main.rs:158:13
Dec 18 02:29:10.568 INFO [stderr]     |
Dec 18 02:29:10.568 INFO [stderr] 158 |         use iron::mime;
Dec 18 02:29:10.568 INFO [stderr]     |             ^^^^^^^^^^
Dec 18 02:29:10.568 INFO [stderr] 
Dec 18 02:29:10.568 INFO [stderr] warning: unused import: `iron::mime`
Dec 18 02:29:10.568 INFO [stderr]    --> src/main.rs:170:13
Dec 18 02:29:10.568 INFO [stderr]     |
Dec 18 02:29:10.569 INFO [stderr] 170 |         use iron::mime;
Dec 18 02:29:10.569 INFO [stderr]     |             ^^^^^^^^^^
Dec 18 02:29:10.569 INFO [stderr] 
Dec 18 02:29:10.720 INFO [stderr] warning: value assigned to `r` is never read
Dec 18 02:29:10.720 INFO [stderr]   --> src/main.rs:64:17
Dec 18 02:29:10.720 INFO [stderr]    |
Dec 18 02:29:10.720 INFO [stderr] 64 |         let mut r = 0;
Dec 18 02:29:10.720 INFO [stderr]    |                 ^
Dec 18 02:29:10.720 INFO [stderr]    |
Dec 18 02:29:10.720 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 02:29:10.720 INFO [stderr] 
Dec 18 02:29:10.720 INFO [stderr] warning: value assigned to `g` is never read
Dec 18 02:29:10.720 INFO [stderr]   --> src/main.rs:65:17
Dec 18 02:29:10.720 INFO [stderr]    |
Dec 18 02:29:10.720 INFO [stderr] 65 |         let mut g = 0;
Dec 18 02:29:10.720 INFO [stderr]    |                 ^
Dec 18 02:29:10.720 INFO [stderr] 
Dec 18 02:29:10.720 INFO [stderr] warning: value assigned to `b` is never read
Dec 18 02:29:10.720 INFO [stderr]   --> src/main.rs:66:17
Dec 18 02:29:10.720 INFO [stderr]    |
Dec 18 02:29:10.720 INFO [stderr] 66 |         let mut b = 0;
Dec 18 02:29:10.720 INFO [stderr]    |                 ^
Dec 18 02:29:10.720 INFO [stderr] 
Dec 18 02:29:10.720 INFO [stderr] warning: unused variable: `req`
Dec 18 02:29:10.720 INFO [stderr]    --> src/main.rs:169:29
Dec 18 02:29:10.720 INFO [stderr]     |
Dec 18 02:29:10.721 INFO [stderr] 169 |     fn random_image_handler(req: &mut Request) -> IronResult<Response> {
Dec 18 02:29:10.721 INFO [stderr]     |                             ^^^ help: consider using `_req` instead
Dec 18 02:29:10.721 INFO [stderr]     |
Dec 18 02:29:10.721 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 02:29:10.721 INFO [stderr] 
Dec 18 02:29:10.752 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:29:10.752 INFO [stderr]   --> src/main.rs:41:9
Dec 18 02:29:10.752 INFO [stderr]    |
Dec 18 02:29:10.752 INFO [stderr] 41 |     let mut x_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 18 02:29:10.752 INFO [stderr]    |         ----^^^^^^^^
Dec 18 02:29:10.752 INFO [stderr]    |         |
Dec 18 02:29:10.752 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:29:10.752 INFO [stderr]    |
Dec 18 02:29:10.752 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 02:29:10.752 INFO [stderr] 
Dec 18 02:29:10.752 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:29:10.752 INFO [stderr]   --> src/main.rs:42:9
Dec 18 02:29:10.752 INFO [stderr]    |
Dec 18 02:29:10.752 INFO [stderr] 42 |     let mut y_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 18 02:29:10.752 INFO [stderr]    |         ----^^^^^^^^
Dec 18 02:29:10.752 INFO [stderr]    |         |
Dec 18 02:29:10.752 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:29:10.752 INFO [stderr] 
Dec 18 02:29:10.752 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:29:10.753 INFO [stderr]   --> src/main.rs:43:9
Dec 18 02:29:10.753 INFO [stderr]    |
Dec 18 02:29:10.753 INFO [stderr] 43 |     let mut color_adjust = xor_rand.gen_range(10.0, 256.0);
Dec 18 02:29:10.753 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 18 02:29:10.753 INFO [stderr]    |         |
Dec 18 02:29:10.753 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:29:10.753 INFO [stderr] 
Dec 18 02:29:10.753 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:29:10.753 INFO [stderr]   --> src/main.rs:45:9
Dec 18 02:29:10.753 INFO [stderr]    |
Dec 18 02:29:10.753 INFO [stderr] 45 |     let mut julia_adjustor_x = xor_rand.gen_range(-0.6, 0.6);
Dec 18 02:29:10.753 INFO [stderr]    |         ----^^^^^^^^^^^^^^^^
Dec 18 02:29:10.753 INFO [stderr]    |         |
Dec 18 02:29:10.753 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:29:10.753 INFO [stderr] 
Dec 18 02:29:10.767 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 02:29:10.767 INFO [stderr]    --> src/main.rs:165:9
Dec 18 02:29:10.767 INFO [stderr]     |
Dec 18 02:29:10.767 INFO [stderr] 165 |         image_rgb.save(&mut bytes, image::PNG);
Dec 18 02:29:10.767 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 02:29:10.767 INFO [stderr]     |
Dec 18 02:29:10.767 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 02:29:10.767 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 02:29:10.767 INFO [stderr] 
Dec 18 02:29:10.767 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 02:29:10.767 INFO [stderr]    --> src/main.rs:178:9
Dec 18 02:29:10.767 INFO [stderr]     |
Dec 18 02:29:10.767 INFO [stderr] 178 |         image_rgb.save(&mut bytes, image::PNG);
Dec 18 02:29:10.767 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 02:29:10.767 INFO [stderr]     |
Dec 18 02:29:10.767 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 02:29:10.767 INFO [stderr] 
Dec 18 02:29:10.944 INFO [stderr] warning: value assigned to `r` is never read
Dec 18 02:29:10.944 INFO [stderr]   --> src/main.rs:64:17
Dec 18 02:29:10.944 INFO [stderr]    |
Dec 18 02:29:10.944 INFO [stderr] 64 |         let mut r = 0;
Dec 18 02:29:10.944 INFO [stderr]    |                 ^
Dec 18 02:29:10.944 INFO [stderr]    |
Dec 18 02:29:10.944 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 02:29:10.944 INFO [stderr] 
Dec 18 02:29:10.944 INFO [stderr] warning: value assigned to `g` is never read
Dec 18 02:29:10.944 INFO [stderr]   --> src/main.rs:65:17
Dec 18 02:29:10.944 INFO [stderr]    |
Dec 18 02:29:10.944 INFO [stderr] 65 |         let mut g = 0;
Dec 18 02:29:10.944 INFO [stderr]    |                 ^
Dec 18 02:29:10.944 INFO [stderr] 
Dec 18 02:29:10.944 INFO [stderr] warning: value assigned to `b` is never read
Dec 18 02:29:10.944 INFO [stderr]   --> src/main.rs:66:17
Dec 18 02:29:10.944 INFO [stderr]    |
Dec 18 02:29:10.944 INFO [stderr] 66 |         let mut b = 0;
Dec 18 02:29:10.944 INFO [stderr]    |                 ^
Dec 18 02:29:10.944 INFO [stderr] 
Dec 18 02:29:10.944 INFO [stderr] warning: unused variable: `req`
Dec 18 02:29:10.944 INFO [stderr]    --> src/main.rs:169:29
Dec 18 02:29:10.944 INFO [stderr]     |
Dec 18 02:29:10.944 INFO [stderr] 169 |     fn random_image_handler(req: &mut Request) -> IronResult<Response> {
Dec 18 02:29:10.944 INFO [stderr]     |                             ^^^ help: consider using `_req` instead
Dec 18 02:29:10.944 INFO [stderr]     |
Dec 18 02:29:10.945 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 02:29:10.945 INFO [stderr] 
Dec 18 02:29:10.960 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:29:10.960 INFO [stderr]   --> src/main.rs:41:9
Dec 18 02:29:10.960 INFO [stderr]    |
Dec 18 02:29:10.960 INFO [stderr] 41 |     let mut x_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 18 02:29:10.960 INFO [stderr]    |         ----^^^^^^^^
Dec 18 02:29:10.960 INFO [stderr]    |         |
Dec 18 02:29:10.960 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:29:10.960 INFO [stderr]    |
Dec 18 02:29:10.960 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 02:29:10.960 INFO [stderr] 
Dec 18 02:29:10.960 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:29:10.960 INFO [stderr]   --> src/main.rs:42:9
Dec 18 02:29:10.960 INFO [stderr]    |
Dec 18 02:29:10.960 INFO [stderr] 42 |     let mut y_adjust = xor_rand.gen_range(0.4, 256.0);
Dec 18 02:29:10.960 INFO [stderr]    |         ----^^^^^^^^
Dec 18 02:29:10.960 INFO [stderr]    |         |
Dec 18 02:29:10.960 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:29:10.960 INFO [stderr] 
Dec 18 02:29:10.961 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:29:10.961 INFO [stderr]   --> src/main.rs:43:9
Dec 18 02:29:10.961 INFO [stderr]    |
Dec 18 02:29:10.961 INFO [stderr] 43 |     let mut color_adjust = xor_rand.gen_range(10.0, 256.0);
Dec 18 02:29:10.961 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 18 02:29:10.961 INFO [stderr]    |         |
Dec 18 02:29:10.961 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:29:10.961 INFO [stderr] 
Dec 18 02:29:10.961 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:29:10.961 INFO [stderr]   --> src/main.rs:45:9
Dec 18 02:29:10.961 INFO [stderr]    |
Dec 18 02:29:10.961 INFO [stderr] 45 |     let mut julia_adjustor_x = xor_rand.gen_range(-0.6, 0.6);
Dec 18 02:29:10.961 INFO [stderr]    |         ----^^^^^^^^^^^^^^^^
Dec 18 02:29:10.961 INFO [stderr]    |         |
Dec 18 02:29:10.961 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:29:10.961 INFO [stderr] 
Dec 18 02:29:10.968 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 02:29:10.968 INFO [stderr]    --> src/main.rs:165:9
Dec 18 02:29:10.968 INFO [stderr]     |
Dec 18 02:29:10.968 INFO [stderr] 165 |         image_rgb.save(&mut bytes, image::PNG);
Dec 18 02:29:10.968 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 02:29:10.968 INFO [stderr]     |
Dec 18 02:29:10.968 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 02:29:10.968 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 02:29:10.968 INFO [stderr] 
Dec 18 02:29:10.968 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 02:29:10.968 INFO [stderr]    --> src/main.rs:178:9
Dec 18 02:29:10.968 INFO [stderr]     |
Dec 18 02:29:10.968 INFO [stderr] 178 |         image_rgb.save(&mut bytes, image::PNG);
Dec 18 02:29:10.968 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 02:29:10.968 INFO [stderr]     |
Dec 18 02:29:10.968 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 02:29:10.968 INFO [stderr] 
Dec 18 02:29:11.013 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.65s
Dec 18 02:29:11.772 INFO running `"docker" "inspect" "6c7bd84375ba585d5fc1834e0237dcc32b8c38afe38ced2d2569c0d288753967"`
Dec 18 02:29:12.112 INFO running `"docker" "rm" "-f" "6c7bd84375ba585d5fc1834e0237dcc32b8c38afe38ced2d2569c0d288753967"`
Dec 18 02:29:12.400 INFO [stdout] 6c7bd84375ba585d5fc1834e0237dcc32b8c38afe38ced2d2569c0d288753967