[INFO] cloning repository https://github.com/kbacha/hex-escape-bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kbacha/hex-escape-bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbacha%2Fhex-escape-bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbacha%2Fhex-escape-bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad3ba57e8468d021269e0130757dcef607399db3
[INFO] testing kbacha/hex-escape-bench against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbacha%2Fhex-escape-bench" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kbacha/hex-escape-bench on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kbacha/hex-escape-bench
[INFO] finished tweaking git repo https://github.com/kbacha/hex-escape-bench
[INFO] tweaked toml for git repo https://github.com/kbacha/hex-escape-bench written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/kbacha/hex-escape-bench already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30957d54596a9ecd26484a3fbb48b7e80ceb646083978924ed5228d64c44a1f4
[INFO] running `Command { std: "docker" "start" "-a" "30957d54596a9ecd26484a3fbb48b7e80ceb646083978924ed5228d64c44a1f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30957d54596a9ecd26484a3fbb48b7e80ceb646083978924ed5228d64c44a1f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30957d54596a9ecd26484a3fbb48b7e80ceb646083978924ed5228d64c44a1f4", kill_on_drop: false }`
[INFO] [stdout] 30957d54596a9ecd26484a3fbb48b7e80ceb646083978924ed5228d64c44a1f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bfcc970d600675b67ae8811bab522ca6f3e1ef276ad2d34af196746d9870885
[INFO] running `Command { std: "docker" "start" "-a" "6bfcc970d600675b67ae8811bab522ca6f3e1ef276ad2d34af196746d9870885", kill_on_drop: false }`
[INFO] [stderr]    Compiling hex-escape-bench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `from_utf8_unchecked` that must be used
[INFO] [stdout]   --> src/main.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |             unsafe { std::str::from_utf8_unchecked(&[*b1, *b2]); }
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "6bfcc970d600675b67ae8811bab522ca6f3e1ef276ad2d34af196746d9870885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bfcc970d600675b67ae8811bab522ca6f3e1ef276ad2d34af196746d9870885", kill_on_drop: false }`
[INFO] [stdout] 6bfcc970d600675b67ae8811bab522ca6f3e1ef276ad2d34af196746d9870885
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eaf2af704d26b9efc836cbb818c168d92f040dea8d03be261949c392c4828bd5
[INFO] running `Command { std: "docker" "start" "-a" "eaf2af704d26b9efc836cbb818c168d92f040dea8d03be261949c392c4828bd5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hex-escape-bench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `from_utf8_unchecked` that must be used
[INFO] [stdout]   --> src/main.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |             unsafe { std::str::from_utf8_unchecked(&[*b1, *b2]); }
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "eaf2af704d26b9efc836cbb818c168d92f040dea8d03be261949c392c4828bd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaf2af704d26b9efc836cbb818c168d92f040dea8d03be261949c392c4828bd5", kill_on_drop: false }`
[INFO] [stdout] eaf2af704d26b9efc836cbb818c168d92f040dea8d03be261949c392c4828bd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ac01775924540d65799984a7ebc71b869d506c825e78bc28eb50a1b387c56071
[INFO] running `Command { std: "docker" "start" "-a" "ac01775924540d65799984a7ebc71b869d506c825e78bc28eb50a1b387c56071", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `from_utf8_unchecked` that must be used
[INFO] [stderr]   --> src/main.rs:64:22
[INFO] [stderr]    |
[INFO] [stderr] 64 |             unsafe { std::str::from_utf8_unchecked(&[*b1, *b2]); }
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `hex-escape-bench` (bin "hex-escape-bench" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hex_escape_bench-f6c7b796b590fd24)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ac01775924540d65799984a7ebc71b869d506c825e78bc28eb50a1b387c56071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac01775924540d65799984a7ebc71b869d506c825e78bc28eb50a1b387c56071", kill_on_drop: false }`
[INFO] [stdout] ac01775924540d65799984a7ebc71b869d506c825e78bc28eb50a1b387c56071