[INFO] cloning repository https://github.com/SyedUmerHasan/rust-structures-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SyedUmerHasan/rust-structures-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSyedUmerHasan%2Frust-structures-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSyedUmerHasan%2Frust-structures-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ebb777f6a0a9eeb6a816a8aa0ac0e6107608e62
[INFO] testing SyedUmerHasan/rust-structures-practice against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSyedUmerHasan%2Frust-structures-practice" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SyedUmerHasan/rust-structures-practice on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SyedUmerHasan/rust-structures-practice
[INFO] finished tweaking git repo https://github.com/SyedUmerHasan/rust-structures-practice
[INFO] tweaked toml for git repo https://github.com/SyedUmerHasan/rust-structures-practice written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/SyedUmerHasan/rust-structures-practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 491ef8b35a9b8d646ac8e5b26c6eccfd3cf9608c18227e2f6a5a4ccc9b590f2d
[INFO] running `Command { std: "docker" "start" "-a" "491ef8b35a9b8d646ac8e5b26c6eccfd3cf9608c18227e2f6a5a4ccc9b590f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "491ef8b35a9b8d646ac8e5b26c6eccfd3cf9608c18227e2f6a5a4ccc9b590f2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "491ef8b35a9b8d646ac8e5b26c6eccfd3cf9608c18227e2f6a5a4ccc9b590f2d", kill_on_drop: false }`
[INFO] [stdout] 491ef8b35a9b8d646ac8e5b26c6eccfd3cf9608c18227e2f6a5a4ccc9b590f2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b64c4d60292d99342b813a39dd1f4c27be6be4d2b09a714b50cc2e4333af0c4a
[INFO] running `Command { std: "docker" "start" "-a" "b64c4d60292d99342b813a39dd1f4c27be6be4d2b09a714b50cc2e4333af0c4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling First v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `First` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "b64c4d60292d99342b813a39dd1f4c27be6be4d2b09a714b50cc2e4333af0c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b64c4d60292d99342b813a39dd1f4c27be6be4d2b09a714b50cc2e4333af0c4a", kill_on_drop: false }`
[INFO] [stdout] b64c4d60292d99342b813a39dd1f4c27be6be4d2b09a714b50cc2e4333af0c4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e05be4c733419d8ef1edbeba73a63d666aa8ed99742edfaaa7cc77323d26c45
[INFO] running `Command { std: "docker" "start" "-a" "9e05be4c733419d8ef1edbeba73a63d666aa8ed99742edfaaa7cc77323d26c45", kill_on_drop: false }`
[INFO] [stderr]    Compiling First v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `First` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "9e05be4c733419d8ef1edbeba73a63d666aa8ed99742edfaaa7cc77323d26c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e05be4c733419d8ef1edbeba73a63d666aa8ed99742edfaaa7cc77323d26c45", kill_on_drop: false }`
[INFO] [stdout] 9e05be4c733419d8ef1edbeba73a63d666aa8ed99742edfaaa7cc77323d26c45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 14f51f762a0b8d89809e5207f5353c2bb4f6b80c54ffff70e30176eb1c2c35c9
[INFO] running `Command { std: "docker" "start" "-a" "14f51f762a0b8d89809e5207f5353c2bb4f6b80c54ffff70e30176eb1c2c35c9", kill_on_drop: false }`
[INFO] [stderr] warning: crate `First` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `first`
[INFO] [stderr] 
[INFO] [stderr] warning: `First` (bin "First" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/First-684d0d8903fd9860)
[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" "14f51f762a0b8d89809e5207f5353c2bb4f6b80c54ffff70e30176eb1c2c35c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14f51f762a0b8d89809e5207f5353c2bb4f6b80c54ffff70e30176eb1c2c35c9", kill_on_drop: false }`
[INFO] [stdout] 14f51f762a0b8d89809e5207f5353c2bb4f6b80c54ffff70e30176eb1c2c35c9