[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 beta-2022-04-10 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 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/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" "+beta-2022-04-10" "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-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" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c047cf3d3012b41e8c404c034e39cff34a65e62a04ebe53bbf083cf0742c1324
[INFO] running `Command { std: "docker" "start" "-a" "c047cf3d3012b41e8c404c034e39cff34a65e62a04ebe53bbf083cf0742c1324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c047cf3d3012b41e8c404c034e39cff34a65e62a04ebe53bbf083cf0742c1324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c047cf3d3012b41e8c404c034e39cff34a65e62a04ebe53bbf083cf0742c1324", kill_on_drop: false }`
[INFO] [stdout] c047cf3d3012b41e8c404c034e39cff34a65e62a04ebe53bbf083cf0742c1324
[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" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b4922e5bd4ac9b5edbbabafff3f2cacea597d32d00f80fc9868199d03778515
[INFO] running `Command { std: "docker" "start" "-a" "2b4922e5bd4ac9b5edbbabafff3f2cacea597d32d00f80fc9868199d03778515", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9m 40s
[INFO] running `Command { std: "docker" "inspect" "2b4922e5bd4ac9b5edbbabafff3f2cacea597d32d00f80fc9868199d03778515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b4922e5bd4ac9b5edbbabafff3f2cacea597d32d00f80fc9868199d03778515", kill_on_drop: false }`
[INFO] [stdout] 2b4922e5bd4ac9b5edbbabafff3f2cacea597d32d00f80fc9868199d03778515
[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" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 115bd8f83c770e1635ece95da52fbd2bd69d7c6b88e9fbed88717976c255699d
[INFO] running `Command { std: "docker" "start" "-a" "115bd8f83c770e1635ece95da52fbd2bd69d7c6b88e9fbed88717976c255699d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.37s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/exercises-cfebb873c30c5702)
[INFO] running `Command { std: "docker" "inspect" "115bd8f83c770e1635ece95da52fbd2bd69d7c6b88e9fbed88717976c255699d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "115bd8f83c770e1635ece95da52fbd2bd69d7c6b88e9fbed88717976c255699d", kill_on_drop: false }`
[INFO] [stdout] 115bd8f83c770e1635ece95da52fbd2bd69d7c6b88e9fbed88717976c255699d
[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" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bbd3354606af074d5ca5dd3b8093e2b6931ebdaabc1ae2a2b4f22a25ba96b8b8
[INFO] running `Command { std: "docker" "start" "-a" "bbd3354606af074d5ca5dd3b8093e2b6931ebdaabc1ae2a2b4f22a25ba96b8b8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.97s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/exercises-cfebb873c30c5702)
[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" "bbd3354606af074d5ca5dd3b8093e2b6931ebdaabc1ae2a2b4f22a25ba96b8b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbd3354606af074d5ca5dd3b8093e2b6931ebdaabc1ae2a2b4f22a25ba96b8b8", kill_on_drop: false }`
[INFO] [stdout] bbd3354606af074d5ca5dd3b8093e2b6931ebdaabc1ae2a2b4f22a25ba96b8b8