[INFO] fetching crate pngquant 3.0.2...
[INFO] checking pngquant-3.0.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate pngquant 3.0.2 into /workspace/builds/worker-7-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-7-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 core-graphics v0.23.1
[INFO] [stderr]   Downloaded imgref v1.9.4
[INFO] [stderr]   Downloaded wild v2.2.0
[INFO] [stderr]   Downloaded imagequant-sys v4.0.3
[INFO] [stderr]   Downloaded libpng-sys v1.1.9
[INFO] [stderr]   Downloaded libz-sys v1.1.12
[INFO] [stderr]   Downloaded cocoa_image v1.0.6
[INFO] [stderr]   Downloaded imagequant v4.2.2
[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_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] fe46e752e68cb49eaae0a91e21caad118efa08ff5d910660e30415471f29e930
[INFO] running `Command { std: "docker" "start" "-a" "fe46e752e68cb49eaae0a91e21caad118efa08ff5d910660e30415471f29e930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe46e752e68cb49eaae0a91e21caad118efa08ff5d910660e30415471f29e930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe46e752e68cb49eaae0a91e21caad118efa08ff5d910660e30415471f29e930", kill_on_drop: false }`
[INFO] [stdout] fe46e752e68cb49eaae0a91e21caad118efa08ff5d910660e30415471f29e930
[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 }`
[INFO] [stdout] 31a0382f589f1e4661a2ee4d412c20f1353040817230c4311266a8eff1ad0af8
[INFO] running `Command { std: "docker" "start" "-a" "31a0382f589f1e4661a2ee4d412c20f1353040817230c4311266a8eff1ad0af8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling dunce v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling imagequant-sys v4.0.3
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking bytemuck v1.14.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking wild v2.2.0
[INFO] [stderr]     Checking rgb v0.8.36
[INFO] [stderr]     Checking crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[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 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 5.02s
[INFO] running `Command { std: "docker" "inspect" "31a0382f589f1e4661a2ee4d412c20f1353040817230c4311266a8eff1ad0af8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31a0382f589f1e4661a2ee4d412c20f1353040817230c4311266a8eff1ad0af8", kill_on_drop: false }`
[INFO] [stdout] 31a0382f589f1e4661a2ee4d412c20f1353040817230c4311266a8eff1ad0af8
[INFO] checking pngquant-3.0.2 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate pngquant 3.0.2 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate pngquant 3.0.2 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-7-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e393c8d575e81fb14c1e0b9d6354333f1a2a2eca79df2ac2d915371b358f2b3
[INFO] running `Command { std: "docker" "start" "-a" "5e393c8d575e81fb14c1e0b9d6354333f1a2a2eca79df2ac2d915371b358f2b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e393c8d575e81fb14c1e0b9d6354333f1a2a2eca79df2ac2d915371b358f2b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e393c8d575e81fb14c1e0b9d6354333f1a2a2eca79df2ac2d915371b358f2b3", kill_on_drop: false }`
[INFO] [stdout] 5e393c8d575e81fb14c1e0b9d6354333f1a2a2eca79df2ac2d915371b358f2b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 535c4fc2aa935c03ec2d2e6466f093e8ebc1208a3516b7d76eb599ba20afc546
[INFO] running `Command { std: "docker" "start" "-a" "535c4fc2aa935c03ec2d2e6466f093e8ebc1208a3516b7d76eb599ba20afc546", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling dunce v1.0.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling imagequant-sys v4.0.3
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking bytemuck v1.14.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking wild v2.2.0
[INFO] [stderr]     Checking rgb v0.8.36
[INFO] [stderr]     Checking crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[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 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 5.49s
[INFO] running `Command { std: "docker" "inspect" "535c4fc2aa935c03ec2d2e6466f093e8ebc1208a3516b7d76eb599ba20afc546", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "535c4fc2aa935c03ec2d2e6466f093e8ebc1208a3516b7d76eb599ba20afc546", kill_on_drop: false }`
[INFO] [stdout] 535c4fc2aa935c03ec2d2e6466f093e8ebc1208a3516b7d76eb599ba20afc546