[INFO] cloning repository https://github.com/iamazy/rust-cookbook-code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iamazy/rust-cookbook-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamazy%2Frust-cookbook-code", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e720152d18734497206085fa673bb49fa48fedd
[INFO] checking iamazy/rust-cookbook-code against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiamazy%2Frust-cookbook-code" "/workspace/builds/worker-9/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iamazy/rust-cookbook-code on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iamazy/rust-cookbook-code
[INFO] finished tweaking git repo https://github.com/iamazy/rust-cookbook-code
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[INFO] crate git repo https://github.com/iamazy/rust-cookbook-code already has a lockfile, it will not be regenerated
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[INFO] [stdout] 7395b1a2b369bc264ad72c503f6bfac3a4150339feb3090efc146187179dfc78
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[INFO] [stdout] 871f042b5ea9ed10aa641299c14587d87024412dcd4013238dfb8e9f1b53c35c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "871f042b5ea9ed10aa641299c14587d87024412dcd4013238dfb8e9f1b53c35c", kill_on_drop: false }`
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[INFO] [stderr]     Checking jpeg-decoder v0.1.18
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[INFO] [stderr]     Checking rust-cookbook-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::create_dir_all`
[INFO] [stdout]  --> src/concurrency/parallel_tasks.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::create_dir_all;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `bail`
[INFO] [stdout]  --> src/concurrency/parallel_tasks.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{bail, Error, Result};
[INFO] [stdout]   |              ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `MatchOptions`, `glob_with`
[INFO] [stdout]  --> src/concurrency/parallel_tasks.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use glob::{glob_with, MatchOptions};
[INFO] [stdout]   |            ^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/concurrency/parallel_tasks.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 (x + y)
[INFO] [stdout]    |                 ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::create_dir_all`
[INFO] [stdout]  --> src/concurrency/parallel_tasks.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::create_dir_all;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `bail`
[INFO] [stdout]  --> src/concurrency/parallel_tasks.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{bail, Error, Result};
[INFO] [stdout]   |              ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `MatchOptions`, `glob_with`
[INFO] [stdout]  --> src/concurrency/parallel_tasks.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use glob::{glob_with, MatchOptions};
[INFO] [stdout]   |            ^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/concurrency/parallel_tasks.rs:76:17
[INFO] [stdout]    |
[INFO] [stdout] 76 |                 (x + y)
[INFO] [stdout]    |                 ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error_chain::ChainedError`
[INFO] [stdout]  --> src/concurrency/parallel_tasks.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use error_chain::ChainedError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error_chain::ChainedError`
[INFO] [stdout]  --> src/concurrency/parallel_tasks.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use error_chain::ChainedError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress_tarball`
[INFO] [stdout]   --> src/compress/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn decompress_tarball() -> Result<(), std::io::Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress_tarball2`
[INFO] [stdout]   --> src/compress/mod.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn decompress_tarball2() -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `draw_fractal`
[INFO] [stdout]    --> src/concurrency/explicit_threads.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 130 | pub fn draw_fractal() -> Result<(), RecvError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `julia`
[INFO] [stdout]    --> src/concurrency/explicit_threads.rs:159:4
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn julia(c: Complex<f32>, x: u32, y: u32, width: u32, height: u32, max_iter: u32) -> u32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `normalize`
[INFO] [stdout]    --> src/concurrency/explicit_threads.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn normalize(color: f32, factor: f32) -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `wavelength_to_rgb`
[INFO] [stdout]    --> src/concurrency/explicit_threads.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn wavelength_to_rgb(wavelength: u32) -> Rgb<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_thumbnail`
[INFO] [stdout]    --> src/concurrency/parallel_tasks.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn make_thumbnail<PA, PB>(original: PA, thumb_dir: PB, long_edge: u32) -> Result<()>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress_tarball`
[INFO] [stdout]   --> src/compress/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn decompress_tarball() -> Result<(), std::io::Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress_tarball2`
[INFO] [stdout]   --> src/compress/mod.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn decompress_tarball2() -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `draw_fractal`
[INFO] [stdout]    --> src/concurrency/explicit_threads.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 130 | pub fn draw_fractal() -> Result<(), RecvError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `julia`
[INFO] [stdout]    --> src/concurrency/explicit_threads.rs:159:4
[INFO] [stdout]     |
[INFO] [stdout] 159 | fn julia(c: Complex<f32>, x: u32, y: u32, width: u32, height: u32, max_iter: u32) -> u32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `normalize`
[INFO] [stdout]    --> src/concurrency/explicit_threads.rs:179:4
[INFO] [stdout]     |
[INFO] [stdout] 179 | fn normalize(color: f32, factor: f32) -> u8 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `wavelength_to_rgb`
[INFO] [stdout]    --> src/concurrency/explicit_threads.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn wavelength_to_rgb(wavelength: u32) -> Rgb<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_thumbnail`
[INFO] [stdout]    --> src/concurrency/parallel_tasks.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn make_thumbnail<PA, PB>(original: PA, thumb_dir: PB, long_edge: u32) -> Result<()>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 18s
[INFO] running `Command { std: "docker" "inspect" "871f042b5ea9ed10aa641299c14587d87024412dcd4013238dfb8e9f1b53c35c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "871f042b5ea9ed10aa641299c14587d87024412dcd4013238dfb8e9f1b53c35c", kill_on_drop: false }`
[INFO] [stdout] 871f042b5ea9ed10aa641299c14587d87024412dcd4013238dfb8e9f1b53c35c