[INFO] cloning repository https://github.com/guiga-zalu/pixlzr-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/guiga-zalu/pixlzr-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguiga-zalu%2Fpixlzr-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguiga-zalu%2Fpixlzr-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df6aee59430880b4a37bd28da5e83f60566ddec9
[INFO] checking guiga-zalu/pixlzr-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguiga-zalu%2Fpixlzr-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guiga-zalu/pixlzr-rust 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/guiga-zalu/pixlzr-rust
[INFO] finished tweaking git repo https://github.com/guiga-zalu/pixlzr-rust
[INFO] tweaked toml for git repo https://github.com/guiga-zalu/pixlzr-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/guiga-zalu/pixlzr-rust 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 serde_derive v1.0.147
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[INFO] running `Command { std: "docker" "start" "-a" "6d19f5fbcd0cb5547424f1884b42cec2ddc23412a3fc9ff828fbd0543d80817f", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 }`
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[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/data_types/pixlzr.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `phf` is imported redundantly
[INFO] [stdout]   --> src/encoding/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use phf;
[INFO] [stdout]    |     ^^^ the item `phf` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `qoi` is imported redundantly
[INFO] [stdout]   --> src/encoding/mod.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | use qoi::{self, Result as Result_QOI};
[INFO] [stdout]    |           ^^^^ the item `qoi` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/data_types/pixlzr.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `phf` is imported redundantly
[INFO] [stdout]   --> src/encoding/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use phf;
[INFO] [stdout]    |     ^^^ the item `phf` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `qoi` is imported redundantly
[INFO] [stdout]   --> src/encoding/mod.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | use qoi::{self, Result as Result_QOI};
[INFO] [stdout]    |           ^^^^ the item `qoi` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `image` is imported redundantly
[INFO] [stdout]  --> benches/bench-00.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use image::{self, DynamicImage};
[INFO] [stdout]   |             ^^^^ the item `image` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 55.24s
[INFO] running `Command { std: "docker" "inspect" "ead007876599ea3e8ced7958b6160fd75f73b63109089381232dc39571319064", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ead007876599ea3e8ced7958b6160fd75f73b63109089381232dc39571319064", kill_on_drop: false }`
[INFO] [stdout] ead007876599ea3e8ced7958b6160fd75f73b63109089381232dc39571319064