[INFO] crate pngeq 0.1.0 is already in cache
[INFO] checking pngeq-0.1.0 against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] extracting crate pngeq 0.1.0 into work/builds/worker-0/source
[INFO] validating manifest of crates.io crate pngeq 0.1.0 on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pngeq 0.1.0
[INFO] finished tweaking crates.io crate pngeq 0.1.0
[INFO] tweaked toml for crates.io crate pngeq 0.1.0 written to work/builds/worker-0/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 578e530c6645ee5f9d12ba620c9d8b0f86c29453b72c8efaf0cb38f45f7b6ced
[INFO] running `"docker" "start" "-a" "578e530c6645ee5f9d12ba620c9d8b0f86c29453b72c8efaf0cb38f45f7b6ced"`
[INFO] [stderr]    Compiling lodepng v0.8.2
[INFO] [stderr]     Checking rgb v0.7.2
[INFO] [stderr]     Checking exoquant v0.2.0
[INFO] [stderr]     Checking pngeq v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:38:23
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let ditherer: Box<ditherer::Ditherer> = match matches.value_of("ditherer")
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ditherer::Ditherer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:55:38
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let (optimizer, opt_level): (Box<Optimizer>, u32) = match matches.value_of("optimization level")
[INFO] [stderr]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Optimizer`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:38:23
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let ditherer: Box<ditherer::Ditherer> = match matches.value_of("ditherer")
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ditherer::Ditherer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:55:38
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let (optimizer, opt_level): (Box<Optimizer>, u32) = match matches.value_of("optimization level")
[INFO] [stderr]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Optimizer`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.96s
[INFO] running `"docker" "inspect" "578e530c6645ee5f9d12ba620c9d8b0f86c29453b72c8efaf0cb38f45f7b6ced"`
[INFO] running `"docker" "rm" "-f" "578e530c6645ee5f9d12ba620c9d8b0f86c29453b72c8efaf0cb38f45f7b6ced"`
[INFO] [stdout] 578e530c6645ee5f9d12ba620c9d8b0f86c29453b72c8efaf0cb38f45f7b6ced