[INFO] fetching crate stew 0.2.0...
[INFO] checking stew-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate stew 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate stew 0.2.0 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 stew 0.2.0
[INFO] finished tweaking crates.io crate stew 0.2.0
[INFO] tweaked toml for crates.io crate stew 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 44 packages
[INFO] [stderr]       Adding arrayvec v0.4.12 (latest: v0.7.4)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding clap v2.34.0 (latest: v4.5.4)
[INFO] [stderr]       Adding deflate v0.7.20 (latest: v1.0.0)
[INFO] [stderr]       Adding gif v0.10.3 (latest: v0.13.1)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding image v0.21.3 (latest: v0.25.1)
[INFO] [stderr]       Adding jpeg-decoder v0.1.22 (latest: v0.3.1)
[INFO] [stderr]       Adding num-derive v0.2.5 (latest: v0.4.2)
[INFO] [stderr]       Adding num-rational v0.2.4 (latest: v0.4.1)
[INFO] [stderr]       Adding png v0.14.1 (latest: v0.17.13)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.35)
[INFO] [stderr]       Adding strsim v0.8.0 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding textwrap v0.11.0 (latest: v0.16.1)
[INFO] [stderr]       Adding tiff v0.2.2 (latest: v0.9.1)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] bcdb095cecaac12e54c1fb59b6f6a6c0c4548cb72bcd88191483663498d668c8
[INFO] running `Command { std: "docker" "start" "-a" "bcdb095cecaac12e54c1fb59b6f6a6c0c4548cb72bcd88191483663498d668c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcdb095cecaac12e54c1fb59b6f6a6c0c4548cb72bcd88191483663498d668c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcdb095cecaac12e54c1fb59b6f6a6c0c4548cb72bcd88191483663498d668c8", kill_on_drop: false }`
[INFO] [stdout] bcdb095cecaac12e54c1fb59b6f6a6c0c4548cb72bcd88191483663498d668c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2b56b2a247228d5b71a510829d04cc42a8a7f6e1a681a248e634544a64913c83
[INFO] running `Command { std: "docker" "start" "-a" "2b56b2a247228d5b71a510829d04cc42a8a7f6e1a681a248e634544a64913c83", kill_on_drop: false }`
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking image v0.21.3
[INFO] [stderr]     Checking stew v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `image` is imported redundantly
[INFO] [stdout]  --> src/io.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use image;
[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: the item `image` is imported redundantly
[INFO] [stdout]  --> src/io.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use image;
[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: the item `GenericImageView` is imported redundantly
[INFO] [stdout]    --> src/operations/transformations.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     use image::GenericImageView;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     use super::*;
[INFO] [stdout]     |         -------- the item `GenericImageView` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Config` is imported redundantly
[INFO] [stdout]    --> src/processor/conversion.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         Config, FormatEncodingSettings, JPEGEncodingSettings, PNMEncodingSettings,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 116 |     use super::*;
[INFO] [stdout]     |         -------- the item `Config` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Config` is imported redundantly
[INFO] [stdout]    --> src/processor/encoding_format.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |         Config, FormatEncodingSettings, JPEGEncodingSettings, PNMEncodingSettings,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 125 |     use super::*;
[INFO] [stdout]     |         -------- the item `Config` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/huerotate.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     ;
[INFO] [stdout]    |     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/huerotate.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     ;
[INFO] [stdout]    |     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning 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 4.01s
[INFO] running `Command { std: "docker" "inspect" "2b56b2a247228d5b71a510829d04cc42a8a7f6e1a681a248e634544a64913c83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b56b2a247228d5b71a510829d04cc42a8a7f6e1a681a248e634544a64913c83", kill_on_drop: false }`
[INFO] [stdout] 2b56b2a247228d5b71a510829d04cc42a8a7f6e1a681a248e634544a64913c83