[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 1.55.0 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-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SyedUmerHasan/rust-structures-practice on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-15/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eee71876e99ac8cf408d93149c66099991344806128d62e684c38ae48a05d600
[INFO] running `Command { std: "docker" "start" "-a" "eee71876e99ac8cf408d93149c66099991344806128d62e684c38ae48a05d600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eee71876e99ac8cf408d93149c66099991344806128d62e684c38ae48a05d600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eee71876e99ac8cf408d93149c66099991344806128d62e684c38ae48a05d600", kill_on_drop: false }`
[INFO] [stdout] eee71876e99ac8cf408d93149c66099991344806128d62e684c38ae48a05d600
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58db8f8e366069afd06b7cc293e10f280ce7377f75f1804cc808d997c5e30daf
[INFO] running `Command { std: "docker" "start" "-a" "58db8f8e366069afd06b7cc293e10f280ce7377f75f1804cc808d997c5e30daf", 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 0.67s
[INFO] running `Command { std: "docker" "inspect" "58db8f8e366069afd06b7cc293e10f280ce7377f75f1804cc808d997c5e30daf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58db8f8e366069afd06b7cc293e10f280ce7377f75f1804cc808d997c5e30daf", kill_on_drop: false }`
[INFO] [stdout] 58db8f8e366069afd06b7cc293e10f280ce7377f75f1804cc808d997c5e30daf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4dd68f6e95b0068d508f0c961f7255e418d234b41a9f3b4d9be7dc2b66eacb49
[INFO] running `Command { std: "docker" "start" "-a" "4dd68f6e95b0068d508f0c961f7255e418d234b41a9f3b4d9be7dc2b66eacb49", 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 0.90s
[INFO] running `Command { std: "docker" "inspect" "4dd68f6e95b0068d508f0c961f7255e418d234b41a9f3b4d9be7dc2b66eacb49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dd68f6e95b0068d508f0c961f7255e418d234b41a9f3b4d9be7dc2b66eacb49", kill_on_drop: false }`
[INFO] [stdout] 4dd68f6e95b0068d508f0c961f7255e418d234b41a9f3b4d9be7dc2b66eacb49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 59ad2bc790abcfdd2baacdabe00d6b6df2be00cb76c4b5952c277e8a7c65e8db
[INFO] running `Command { std: "docker" "start" "-a" "59ad2bc790abcfdd2baacdabe00d6b6df2be00cb76c4b5952c277e8a7c65e8db", 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 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/First-771bb1b64ecddb85)
[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" "59ad2bc790abcfdd2baacdabe00d6b6df2be00cb76c4b5952c277e8a7c65e8db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59ad2bc790abcfdd2baacdabe00d6b6df2be00cb76c4b5952c277e8a7c65e8db", kill_on_drop: false }`
[INFO] [stdout] 59ad2bc790abcfdd2baacdabe00d6b6df2be00cb76c4b5952c277e8a7c65e8db