[INFO] cloning repository https://github.com/sinnytk/learning_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sinnytk/learning_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinnytk%2Flearning_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinnytk%2Flearning_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1e54a4819188480b445b6361a9c3d8aeb1561cb
[INFO] testing sinnytk/learning_rust against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsinnytk%2Flearning_rust" "/workspace/builds/worker-48/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-48/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sinnytk/learning_rust on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sinnytk/learning_rust
[INFO] finished tweaking git repo https://github.com/sinnytk/learning_rust
[INFO] tweaked toml for git repo https://github.com/sinnytk/learning_rust written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] crate git repo https://github.com/sinnytk/learning_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3cbfa7a9b9a7b5e2465f87972008261d8a6ff95c5fc5adff484cd48e34ed7e6
[INFO] running `Command { std: "docker" "start" "-a" "b3cbfa7a9b9a7b5e2465f87972008261d8a6ff95c5fc5adff484cd48e34ed7e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3cbfa7a9b9a7b5e2465f87972008261d8a6ff95c5fc5adff484cd48e34ed7e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3cbfa7a9b9a7b5e2465f87972008261d8a6ff95c5fc5adff484cd48e34ed7e6", kill_on_drop: false }`
[INFO] [stdout] b3cbfa7a9b9a7b5e2465f87972008261d8a6ff95c5fc5adff484cd48e34ed7e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0654b9e5b618464c74870f2b1cd31cbd0b31b9dcf4756907e3a49ded95f098b
[INFO] running `Command { std: "docker" "start" "-a" "e0654b9e5b618464c74870f2b1cd31cbd0b31b9dcf4756907e3a49ded95f098b", kill_on_drop: false }`
[INFO] [stderr]    Compiling exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "e0654b9e5b618464c74870f2b1cd31cbd0b31b9dcf4756907e3a49ded95f098b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0654b9e5b618464c74870f2b1cd31cbd0b31b9dcf4756907e3a49ded95f098b", kill_on_drop: false }`
[INFO] [stdout] e0654b9e5b618464c74870f2b1cd31cbd0b31b9dcf4756907e3a49ded95f098b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f09f0a90aaf6e4001f8e16fa1e8b4dc654a75e06b535ec2a870ba6dcd3308f65
[INFO] running `Command { std: "docker" "start" "-a" "f09f0a90aaf6e4001f8e16fa1e8b4dc654a75e06b535ec2a870ba6dcd3308f65", kill_on_drop: false }`
[INFO] [stderr]    Compiling exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "f09f0a90aaf6e4001f8e16fa1e8b4dc654a75e06b535ec2a870ba6dcd3308f65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f09f0a90aaf6e4001f8e16fa1e8b4dc654a75e06b535ec2a870ba6dcd3308f65", kill_on_drop: false }`
[INFO] [stdout] f09f0a90aaf6e4001f8e16fa1e8b4dc654a75e06b535ec2a870ba6dcd3308f65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bef46e45f4f158de2e19df1050f5cf3dddadf72ac96f5007f509a0cddbf68099
[INFO] running `Command { std: "docker" "start" "-a" "bef46e45f4f158de2e19df1050f5cf3dddadf72ac96f5007f509a0cddbf68099", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.72s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/exercises-1304aef52a93e066)
[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" "bef46e45f4f158de2e19df1050f5cf3dddadf72ac96f5007f509a0cddbf68099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bef46e45f4f158de2e19df1050f5cf3dddadf72ac96f5007f509a0cddbf68099", kill_on_drop: false }`
[INFO] [stdout] bef46e45f4f158de2e19df1050f5cf3dddadf72ac96f5007f509a0cddbf68099