[INFO] fetching crate pngquant 3.0.2...
[INFO] checking pngquant-3.0.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate pngquant 3.0.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate pngquant 3.0.2 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 pngquant 3.0.2
[INFO] finished tweaking crates.io crate pngquant 3.0.2
[INFO] tweaked toml for crates.io crate pngquant 3.0.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate pngquant 3.0.2 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 wild v2.2.0
[INFO] [stderr]   Downloaded cocoa_image v1.0.6
[INFO] [stderr]   Downloaded rgb v0.8.36
[INFO] [stderr]   Downloaded imagequant v4.2.2
[INFO] [stderr]   Downloaded imgref v1.9.4
[INFO] [stderr]   Downloaded imagequant-sys v4.0.3
[INFO] [stderr]   Downloaded lcms2-sys v4.0.3
[INFO] [stderr]   Downloaded libpng-sys v1.1.9
[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] 2a4b1522706898a1ff3b959200bad33cd8df0adac820b51b8306f399bbca18aa
[INFO] running `Command { std: "docker" "start" "-a" "2a4b1522706898a1ff3b959200bad33cd8df0adac820b51b8306f399bbca18aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a4b1522706898a1ff3b959200bad33cd8df0adac820b51b8306f399bbca18aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a4b1522706898a1ff3b959200bad33cd8df0adac820b51b8306f399bbca18aa", kill_on_drop: false }`
[INFO] [stdout] 2a4b1522706898a1ff3b959200bad33cd8df0adac820b51b8306f399bbca18aa
[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] c3525f7f81fbd594b4fbec97f73df27ed5849e1bb6958e4a851ef940b3ee7245
[INFO] running `Command { std: "docker" "start" "-a" "c3525f7f81fbd594b4fbec97f73df27ed5849e1bb6958e4a851ef940b3ee7245", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling dunce v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking bytemuck v1.14.0
[INFO] [stderr]    Compiling imagequant-sys v4.0.3
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking wild v2.2.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking rgb v0.8.36
[INFO] [stderr]    Compiling jobserver v0.1.27
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling libz-sys v1.1.12
[INFO] [stderr]    Compiling lcms2-sys v4.0.3
[INFO] [stderr]    Compiling libpng-sys v1.1.9
[INFO] [stderr]    Compiling pngquant v3.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking imagequant v4.2.2
[INFO] [stdout] warning: the item `pngquant_internal_print_config` is imported redundantly
[INFO] [stdout]   --> rust/bin.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::ffi::pngquant_internal_print_config;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | use crate::ffi::*;
[INFO] [stdout]    |     ------------- the item `pngquant_internal_print_config` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pngquant_internal_print_config` is imported redundantly
[INFO] [stdout]   --> rust/bin.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::ffi::pngquant_internal_print_config;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | use crate::ffi::*;
[INFO] [stdout]    |     ------------- the item `pngquant_internal_print_config` is already imported here
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.49s
[INFO] running `Command { std: "docker" "inspect" "c3525f7f81fbd594b4fbec97f73df27ed5849e1bb6958e4a851ef940b3ee7245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3525f7f81fbd594b4fbec97f73df27ed5849e1bb6958e4a851ef940b3ee7245", kill_on_drop: false }`
[INFO] [stdout] c3525f7f81fbd594b4fbec97f73df27ed5849e1bb6958e4a851ef940b3ee7245
[INFO] checking pngquant-3.0.2 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate pngquant 3.0.2 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate pngquant 3.0.2 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pngquant 3.0.2
[INFO] finished tweaking crates.io crate pngquant 3.0.2
[INFO] tweaked toml for crates.io crate pngquant 3.0.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate pngquant 3.0.2 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f75820db5ea941e422a7a71fd8a7d302d35565399c9a57e2006feb69ba2bde1
[INFO] running `Command { std: "docker" "start" "-a" "7f75820db5ea941e422a7a71fd8a7d302d35565399c9a57e2006feb69ba2bde1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f75820db5ea941e422a7a71fd8a7d302d35565399c9a57e2006feb69ba2bde1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f75820db5ea941e422a7a71fd8a7d302d35565399c9a57e2006feb69ba2bde1", kill_on_drop: false }`
[INFO] [stdout] 7f75820db5ea941e422a7a71fd8a7d302d35565399c9a57e2006feb69ba2bde1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0712e19db0df1f173d945f5221d4406b40763d6898175b25ec9abce61b6424a1
[INFO] running `Command { std: "docker" "start" "-a" "0712e19db0df1f173d945f5221d4406b40763d6898175b25ec9abce61b6424a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling dunce v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking bytemuck v1.14.0
[INFO] [stderr]    Compiling imagequant-sys v4.0.3
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking wild v2.2.0
[INFO] [stderr]     Checking rgb v0.8.36
[INFO] [stderr]    Compiling jobserver v0.1.27
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]    Compiling libz-sys v1.1.12
[INFO] [stderr]    Compiling libpng-sys v1.1.9
[INFO] [stderr]    Compiling lcms2-sys v4.0.3
[INFO] [stderr]    Compiling pngquant v3.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking imagequant v4.2.2
[INFO] [stdout] warning: the item `pngquant_internal_print_config` is imported redundantly
[INFO] [stdout]   --> rust/bin.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::ffi::pngquant_internal_print_config;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | use crate::ffi::*;
[INFO] [stdout]    |     ------------- the item `pngquant_internal_print_config` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pngquant_internal_print_config` is imported redundantly
[INFO] [stdout]   --> rust/bin.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::ffi::pngquant_internal_print_config;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | use crate::ffi::*;
[INFO] [stdout]    |     ------------- the item `pngquant_internal_print_config` is already imported here
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.25s
[INFO] running `Command { std: "docker" "inspect" "0712e19db0df1f173d945f5221d4406b40763d6898175b25ec9abce61b6424a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0712e19db0df1f173d945f5221d4406b40763d6898175b25ec9abce61b6424a1", kill_on_drop: false }`
[INFO] [stdout] 0712e19db0df1f173d945f5221d4406b40763d6898175b25ec9abce61b6424a1