[INFO] cloning repository https://github.com/NaruseNia/color-diff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NaruseNia/color-diff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNaruseNia%2Fcolor-diff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNaruseNia%2Fcolor-diff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d9ab5fd7a4b32ccf4a7990f3691f846dbc8a142
[INFO] checking NaruseNia/color-diff against master#49b3924bd4a34d3cf9c37b74120fba78d9712ab8 for pr-118247
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNaruseNia%2Fcolor-diff" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NaruseNia/color-diff on toolchain 49b3924bd4a34d3cf9c37b74120fba78d9712ab8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49b3924bd4a34d3cf9c37b74120fba78d9712ab8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/NaruseNia/color-diff
[INFO] finished tweaking git repo https://github.com/NaruseNia/color-diff
[INFO] tweaked toml for git repo https://github.com/NaruseNia/color-diff written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/NaruseNia/color-diff already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49b3924bd4a34d3cf9c37b74120fba78d9712ab8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking NaruseNia/color-diff against try#ab2dc84cfc2c30bb279a7cd2bfef172c30260142 for pr-118247
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNaruseNia%2Fcolor-diff" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NaruseNia/color-diff on toolchain ab2dc84cfc2c30bb279a7cd2bfef172c30260142
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab2dc84cfc2c30bb279a7cd2bfef172c30260142" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/NaruseNia/color-diff
[INFO] finished tweaking git repo https://github.com/NaruseNia/color-diff
[INFO] tweaked toml for git repo https://github.com/NaruseNia/color-diff written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/NaruseNia/color-diff already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab2dc84cfc2c30bb279a7cd2bfef172c30260142" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ab2dc84cfc2c30bb279a7cd2bfef172c30260142" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a8ebc5cf655a60c487ba148a82ffd2ab9dbea15ef1acf2b329dd48dbfb43278
[INFO] running `Command { std: "docker" "start" "-a" "3a8ebc5cf655a60c487ba148a82ffd2ab9dbea15ef1acf2b329dd48dbfb43278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a8ebc5cf655a60c487ba148a82ffd2ab9dbea15ef1acf2b329dd48dbfb43278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a8ebc5cf655a60c487ba148a82ffd2ab9dbea15ef1acf2b329dd48dbfb43278", kill_on_drop: false }`
[INFO] [stdout] 3a8ebc5cf655a60c487ba148a82ffd2ab9dbea15ef1acf2b329dd48dbfb43278
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ab2dc84cfc2c30bb279a7cd2bfef172c30260142" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e73d34ab8ed9877e681bfdffdb1dc0f585ba3fdb1b061529d52137cf1237e79
[INFO] running `Command { std: "docker" "start" "-a" "2e73d34ab8ed9877e681bfdffdb1dc0f585ba3fdb1b061529d52137cf1237e79", kill_on_drop: false }`
[INFO] [stderr]     Checking color-diff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::intrinsics::powf64`
[INFO] [stdout]  --> src/color.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::intrinsics::powf64;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::intrinsics::powf64`
[INFO] [stdout]  --> src/color.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::intrinsics::powf64;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `l`, `a`, and `b` are never read
[INFO] [stdout]   --> src/color.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct ColorLab {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 16 |     l: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 17 |     a: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 18 |     b: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ColorLab` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> src/color.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct ColorXYZ {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 23 |     x: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 24 |     y: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 25 |     z: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ColorXYZ` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_rgb` is never used
[INFO] [stdout]   --> src/color.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl ColorRGB {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn from_rgb(r: u32, g: u32, b: u32) -> Self {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `l`, `a`, and `b` are never read
[INFO] [stdout]   --> src/color.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct ColorLab {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 16 |     l: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 17 |     a: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 18 |     b: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ColorLab` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x`, `y`, and `z` are never read
[INFO] [stdout]   --> src/color.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct ColorXYZ {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 23 |     x: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 24 |     y: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 25 |     z: f64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ColorXYZ` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_rgb` is never used
[INFO] [stdout]   --> src/color.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl ColorRGB {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn from_rgb(r: u32, g: u32, b: u32) -> Self {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "2e73d34ab8ed9877e681bfdffdb1dc0f585ba3fdb1b061529d52137cf1237e79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e73d34ab8ed9877e681bfdffdb1dc0f585ba3fdb1b061529d52137cf1237e79", kill_on_drop: false }`
[INFO] [stdout] 2e73d34ab8ed9877e681bfdffdb1dc0f585ba3fdb1b061529d52137cf1237e79