[INFO] cloning repository https://github.com/Nhlest/meme_machine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nhlest/meme_machine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNhlest%2Fmeme_machine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNhlest%2Fmeme_machine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f26a57e3362f393cfb97547a8f14edb9d199b946
[INFO] checking Nhlest/meme_machine against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNhlest%2Fmeme_machine" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nhlest/meme_machine on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nhlest/meme_machine
[INFO] finished tweaking git repo https://github.com/Nhlest/meme_machine
[INFO] tweaked toml for git repo https://github.com/Nhlest/meme_machine written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Nhlest/meme_machine 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cairo-sys-rs v0.15.1
[INFO] [stderr]   Downloaded system-deps v6.0.2
[INFO] [stderr]   Downloaded pangocairo-sys v0.15.1
[INFO] [stderr]   Downloaded pangocairo v0.15.1
[INFO] [stderr]   Downloaded gobject-sys v0.15.5
[INFO] [stderr]   Downloaded cairo-rs v0.15.6
[INFO] [stderr]   Downloaded glib v0.15.6
[INFO] [stderr]   Downloaded anyhow v1.0.54
[INFO] [stderr]   Downloaded proc-macro-crate v1.1.2
[INFO] [stderr]   Downloaded glib-macros v0.15.6
[INFO] [stderr]   Downloaded pango v0.15.6
[INFO] [stderr]   Downloaded glib-sys v0.15.6
[INFO] [stderr]   Downloaded pango-sys v0.15.1
[INFO] [stderr]   Downloaded cfg-expr v0.10.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5dc97d0fd735b32828f066ac6b3239b8639cdd8e136e6c76aa195c5ab92c607e
[INFO] running `Command { std: "docker" "start" "-a" "5dc97d0fd735b32828f066ac6b3239b8639cdd8e136e6c76aa195c5ab92c607e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5dc97d0fd735b32828f066ac6b3239b8639cdd8e136e6c76aa195c5ab92c607e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dc97d0fd735b32828f066ac6b3239b8639cdd8e136e6c76aa195c5ab92c607e", kill_on_drop: false }`
[INFO] [stdout] 5dc97d0fd735b32828f066ac6b3239b8639cdd8e136e6c76aa195c5ab92c607e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3312e20213bd1e40a60a4b2108eba9eac6968398b23387b301034176f8a52860
[INFO] running `Command { std: "docker" "start" "-a" "3312e20213bd1e40a60a4b2108eba9eac6968398b23387b301034176f8a52860", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling anyhow v1.0.54
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling cfg-expr v0.10.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking futures-channel v0.3.21
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking bytemuck v1.7.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]    Compiling system-deps v6.0.2
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling glib-sys v0.15.6
[INFO] [stderr]    Compiling gobject-sys v0.15.5
[INFO] [stderr]    Compiling pango-sys v0.15.1
[INFO] [stderr]    Compiling cairo-sys-rs v0.15.1
[INFO] [stderr]    Compiling pangocairo-sys v0.15.1
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.2
[INFO] [stderr]    Compiling glib-macros v0.15.6
[INFO] [stderr]     Checking glib v0.15.6
[INFO] [stderr]     Checking pango v0.15.6
[INFO] [stderr]     Checking cairo-rs v0.15.6
[INFO] [stderr]     Checking pangocairo v0.15.1
[INFO] [stderr]     Checking meme_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem::take`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem::take;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Delay`
[INFO] [stdout]  --> src/main.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use image::{Delay, Frame, GenericImage, ImageDecoder};
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::take`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem::take;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Delay`
[INFO] [stdout]  --> src/main.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use image::{Delay, Frame, GenericImage, ImageDecoder};
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 |   let mut image = image::RgbaImage::from_raw(dim.0 as u32, pixel_size as u32 + dim.1 + 20, data).unwrap();
[INFO] [stdout]    |       ----^^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 |   let mut image = image::RgbaImage::from_raw(dim.0 as u32, pixel_size as u32 + dim.1 + 20, data).unwrap();
[INFO] [stdout]    |       ----^^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:58:3
[INFO] [stdout]    |
[INFO] [stdout] 58 |   encoder.set_repeat(Repeat::Infinite);
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |   let _ = encoder.set_repeat(Repeat::Infinite);
[INFO] [stdout]    |   +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:58:3
[INFO] [stdout]    |
[INFO] [stdout] 58 |   encoder.set_repeat(Repeat::Infinite);
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |   let _ = encoder.set_repeat(Repeat::Infinite);
[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` profile [unoptimized + debuginfo] target(s) in 23.91s
[INFO] running `Command { std: "docker" "inspect" "3312e20213bd1e40a60a4b2108eba9eac6968398b23387b301034176f8a52860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3312e20213bd1e40a60a4b2108eba9eac6968398b23387b301034176f8a52860", kill_on_drop: false }`
[INFO] [stdout] 3312e20213bd1e40a60a4b2108eba9eac6968398b23387b301034176f8a52860