[INFO] fetching crate imagepipe 0.5.0...
[INFO] checking imagepipe-0.5.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate imagepipe 0.5.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate imagepipe 0.5.0 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 crates.io crate imagepipe 0.5.0
[INFO] finished tweaking crates.io crate imagepipe 0.5.0
[INFO] tweaked toml for crates.io crate imagepipe 0.5.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate imagepipe 0.5.0 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enumn v0.1.3
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[INFO] [stderr]   Downloaded blake3 v1.3.1
[INFO] [stderr]   Downloaded image v0.24.1
[INFO] [stderr]   Downloaded exr v1.4.1
[INFO] [stderr]   Downloaded spin v0.9.2
[INFO] [stderr]   Downloaded jpeg-decoder v0.2.4
[INFO] [stderr]   Downloaded libc v0.2.123
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d180ffab0db64b7dfe6f5c3dacedb4d3568e2d0f420035f856d32faf760e0ab8
[INFO] running `Command { std: "docker" "start" "-a" "d180ffab0db64b7dfe6f5c3dacedb4d3568e2d0f420035f856d32faf760e0ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d180ffab0db64b7dfe6f5c3dacedb4d3568e2d0f420035f856d32faf760e0ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d180ffab0db64b7dfe6f5c3dacedb4d3568e2d0f420035f856d32faf760e0ab8", kill_on_drop: false }`
[INFO] [stdout] d180ffab0db64b7dfe6f5c3dacedb4d3568e2d0f420035f856d32faf760e0ab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b12925eeb3317e1bfb0361af20de65d4171cb693c03f36a522869ffd7c3fafaf
[INFO] running `Command { std: "docker" "start" "-a" "b12925eeb3317e1bfb0361af20de65d4171cb693c03f36a522869ffd7c3fafaf", kill_on_drop: false }`
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[INFO] [stderr]     Checking imagepipe v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/hasher.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `cmp` is imported redundantly
[INFO] [stdout]  --> src/ops/curves.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::opbasics::*;
[INFO] [stdout]   |     ------------------ the item `cmp` is already imported here
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]   --> src/pipeline.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use crate::opbasics::*;
[INFO] [stdout]    |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 15 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/hasher.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `cmp` is imported redundantly
[INFO] [stdout]  --> src/ops/curves.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::opbasics::*;
[INFO] [stdout]   |     ------------------ the item `cmp` is already imported here
[INFO] [stdout] 2 |
[INFO] [stdout] 3 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OpBuffer` is imported redundantly
[INFO] [stdout]    --> src/ops/rotatecrop.rs:168:7
[INFO] [stdout]     |
[INFO] [stdout] 168 |   use crate::buffer::OpBuffer;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 169 |   use super::*;
[INFO] [stdout]     |       -------- the item `OpBuffer` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]   --> src/pipeline.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use crate::opbasics::*;
[INFO] [stdout]    |     ------------------ the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 15 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PartialOrd` is imported redundantly
[INFO] [stdout]    --> src/color_conversions.rs:406:7
[INFO] [stdout]     |
[INFO] [stdout] 406 |   use std::cmp::PartialOrd;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `PartialOrd` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 19.00s
[INFO] running `Command { std: "docker" "inspect" "b12925eeb3317e1bfb0361af20de65d4171cb693c03f36a522869ffd7c3fafaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b12925eeb3317e1bfb0361af20de65d4171cb693c03f36a522869ffd7c3fafaf", kill_on_drop: false }`
[INFO] [stdout] b12925eeb3317e1bfb0361af20de65d4171cb693c03f36a522869ffd7c3fafaf