[INFO] fetching crate dithereens 0.2.1...
[INFO] checking dithereens-0.2.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate dithereens 0.2.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate dithereens 0.2.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate dithereens 0.2.1
[INFO] tweaked toml for crates.io crate dithereens 0.2.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dithereens 0.2.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate dithereens 0.2.1 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6dea913ade63b2460cc9667d8972a07f15ea7fc90bf6ffee3356a5789d595927
[INFO] running `Command { std: "docker" "start" "-a" "6dea913ade63b2460cc9667d8972a07f15ea7fc90bf6ffee3356a5789d595927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dea913ade63b2460cc9667d8972a07f15ea7fc90bf6ffee3356a5789d595927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dea913ade63b2460cc9667d8972a07f15ea7fc90bf6ffee3356a5789d595927", kill_on_drop: false }`
[INFO] [stdout] 6dea913ade63b2460cc9667d8972a07f15ea7fc90bf6ffee3356a5789d595927
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e286f922d8ab78077158c3f4107660102b66352fb06a80903df3398986e39aeb
[INFO] running `Command { std: "docker" "start" "-a" "e286f922d8ab78077158c3f4107660102b66352fb06a80903df3398986e39aeb", kill_on_drop: false }`
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[INFO] [stdout] warning: use of deprecated function `criterion::black_box`: use `std::hint::black_box()` instead
[INFO] [stdout]  --> benches/iterator_adapters.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 |     BenchmarkId, Criterion, black_box, criterion_group, criterion_main,
[INFO] [stdout]   |                             ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `criterion::black_box`: use `std::hint::black_box()` instead
[INFO] [stdout]   --> benches/iterator_adapters.rs:22:25
[INFO] [stdout]    |
[INFO] [stdout] 22 |                         black_box(values.clone()),
[INFO] [stdout]    |                         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `criterion::black_box`: use `std::hint::black_box()` instead
[INFO] [stdout]   --> benches/iterator_adapters.rs:37:46
[INFO] [stdout]    |
[INFO] [stdout] 37 |                     let _results: Vec<f32> = black_box(
[INFO] [stdout]    |                                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `criterion::black_box`: use `std::hint::black_box()` instead
[INFO] [stdout]   --> benches/iterator_adapters.rs:51:46
[INFO] [stdout]    |
[INFO] [stdout] 51 |                     let _results: Vec<f32> = black_box(
[INFO] [stdout]    |                                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `criterion::black_box`: use `std::hint::black_box()` instead
[INFO] [stdout]   --> benches/iterator_adapters.rs:69:46
[INFO] [stdout]    |
[INFO] [stdout] 69 |                     let _results: Vec<f32> = black_box(
[INFO] [stdout]    |                                              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `criterion::black_box`: use `std::hint::black_box()` instead
[INFO] [stdout]   --> benches/iterator_adapters.rs:93:13
[INFO] [stdout]    |
[INFO] [stdout] 93 |             black_box(results)
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `criterion::black_box`: use `std::hint::black_box()` instead
[INFO] [stdout]    --> benches/iterator_adapters.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |             black_box(results)
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `criterion::black_box`: use `std::hint::black_box()` instead
[INFO] [stdout]    --> benches/iterator_adapters.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |             black_box(results)
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.87s
[INFO] running `Command { std: "docker" "inspect" "e286f922d8ab78077158c3f4107660102b66352fb06a80903df3398986e39aeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e286f922d8ab78077158c3f4107660102b66352fb06a80903df3398986e39aeb", kill_on_drop: false }`
[INFO] [stdout] e286f922d8ab78077158c3f4107660102b66352fb06a80903df3398986e39aeb