[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 beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbacha%2Fhex-escape-bench" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kbacha/hex-escape-bench on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-8/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" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4abee84ecb1d04bdf7fcf6ee4d127efd52b04f489c10429cd5d3ca70ff8f19f8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4abee84ecb1d04bdf7fcf6ee4d127efd52b04f489c10429cd5d3ca70ff8f19f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4abee84ecb1d04bdf7fcf6ee4d127efd52b04f489c10429cd5d3ca70ff8f19f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4abee84ecb1d04bdf7fcf6ee4d127efd52b04f489c10429cd5d3ca70ff8f19f8", kill_on_drop: false }`
[INFO] [stdout] 4abee84ecb1d04bdf7fcf6ee4d127efd52b04f489c10429cd5d3ca70ff8f19f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e00988ec6810dae881b637352b0236b1b2aa72c892ecd138d8526c4ad9d726b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6e00988ec6810dae881b637352b0236b1b2aa72c892ecd138d8526c4ad9d726b", 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 1.72s
[INFO] running `Command { std: "docker" "inspect" "6e00988ec6810dae881b637352b0236b1b2aa72c892ecd138d8526c4ad9d726b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e00988ec6810dae881b637352b0236b1b2aa72c892ecd138d8526c4ad9d726b", kill_on_drop: false }`
[INFO] [stdout] 6e00988ec6810dae881b637352b0236b1b2aa72c892ecd138d8526c4ad9d726b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 642a215d88ba2eade36fa80649c4ef93ca5b0d80f021a0e05b3cb4092efdb8db
[INFO] running `Command { std: "docker" "start" "-a" "642a215d88ba2eade36fa80649c4ef93ca5b0d80f021a0e05b3cb4092efdb8db", 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 test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/hex_escape_bench-cc4e8644e619b203)
[INFO] running `Command { std: "docker" "inspect" "642a215d88ba2eade36fa80649c4ef93ca5b0d80f021a0e05b3cb4092efdb8db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "642a215d88ba2eade36fa80649c4ef93ca5b0d80f021a0e05b3cb4092efdb8db", kill_on_drop: false }`
[INFO] [stdout] 642a215d88ba2eade36fa80649c4ef93ca5b0d80f021a0e05b3cb4092efdb8db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b2eb1e27fbfc1845395a2943c0c487122966f45d4099abae2b045a95cad18aec
[INFO] running `Command { std: "docker" "start" "-a" "b2eb1e27fbfc1845395a2943c0c487122966f45d4099abae2b045a95cad18aec", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 1.83s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/hex_escape_bench-cc4e8644e619b203)
[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" "b2eb1e27fbfc1845395a2943c0c487122966f45d4099abae2b045a95cad18aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2eb1e27fbfc1845395a2943c0c487122966f45d4099abae2b045a95cad18aec", kill_on_drop: false }`
[INFO] [stdout] b2eb1e27fbfc1845395a2943c0c487122966f45d4099abae2b045a95cad18aec