[INFO] fetching crate backhand 0.23.0...
[INFO] checking backhand-0.23.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate backhand 0.23.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate backhand 0.23.0
[INFO] finished tweaking crates.io crate backhand 0.23.0
[INFO] tweaked toml for crates.io crate backhand 0.23.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate backhand 0.23.0 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 backhand 0.23.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8061abef953b33bd788461760297ca1ff6ad02b3ad72cb45b96a709247800368
[INFO] running `Command { std: "docker" "start" "-a" "8061abef953b33bd788461760297ca1ff6ad02b3ad72cb45b96a709247800368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8061abef953b33bd788461760297ca1ff6ad02b3ad72cb45b96a709247800368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8061abef953b33bd788461760297ca1ff6ad02b3ad72cb45b96a709247800368", kill_on_drop: false }`
[INFO] [stdout] 8061abef953b33bd788461760297ca1ff6ad02b3ad72cb45b96a709247800368
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 6476321159c89989a1bbb42f45ed6cce6447d643221968fc032c5260b56cf682
[INFO] running `Command { std: "docker" "start" "-a" "6476321159c89989a1bbb42f45ed6cce6447d643221968fc032c5260b56cf682", kill_on_drop: false }`
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[INFO] [stderr]     Checking backhand v0.23.0 (/opt/rustwide/workdir)
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[INFO] [stdout] warning: use of deprecated function `criterion::black_box`: use `std::hint::black_box()` instead
[INFO] [stdout]   --> benches/benchmark.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     black_box(new_filesystem.write(&mut output).unwrap());
[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/benchmark.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     black_box(FilesystemReader::from_reader_with_offset(file, offset).unwrap());
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 46.73s
[INFO] running `Command { std: "docker" "inspect" "6476321159c89989a1bbb42f45ed6cce6447d643221968fc032c5260b56cf682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6476321159c89989a1bbb42f45ed6cce6447d643221968fc032c5260b56cf682", kill_on_drop: false }`
[INFO] [stdout] 6476321159c89989a1bbb42f45ed6cce6447d643221968fc032c5260b56cf682