[INFO] cloning repository https://github.com/silkyprogrammer/rustlearnings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/silkyprogrammer/rustlearnings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsilkyprogrammer%2Frustlearnings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsilkyprogrammer%2Frustlearnings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa0c25ff221a5994511cf3f0379151260a93ee0d
[INFO] testing silkyprogrammer/rustlearnings against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsilkyprogrammer%2Frustlearnings" "/workspace/builds/worker-52/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-52/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/silkyprogrammer/rustlearnings 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/silkyprogrammer/rustlearnings
[INFO] finished tweaking git repo https://github.com/silkyprogrammer/rustlearnings
[INFO] tweaked toml for git repo https://github.com/silkyprogrammer/rustlearnings written to /workspace/builds/worker-52/source/Cargo.toml
[INFO] crate git repo https://github.com/silkyprogrammer/rustlearnings 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 25ac66998607989b188438b024e41686bee3e4bede48a5e8dea0cf825e65431e
[INFO] running `Command { std: "docker" "start" "-a" "25ac66998607989b188438b024e41686bee3e4bede48a5e8dea0cf825e65431e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25ac66998607989b188438b024e41686bee3e4bede48a5e8dea0cf825e65431e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25ac66998607989b188438b024e41686bee3e4bede48a5e8dea0cf825e65431e", kill_on_drop: false }`
[INFO] [stdout] 25ac66998607989b188438b024e41686bee3e4bede48a5e8dea0cf825e65431e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] 3fab6b935b6b4f9eaeb4872443b704cb4a9dd5b97acf83f9f67cd5e42cb9fb13
[INFO] running `Command { std: "docker" "start" "-a" "3fab6b935b6b4f9eaeb4872443b704cb4a9dd5b97acf83f9f67cd5e42cb9fb13", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling HelloWorld v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `HelloWorld` 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: `hello_world`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `Command { std: "docker" "inspect" "3fab6b935b6b4f9eaeb4872443b704cb4a9dd5b97acf83f9f67cd5e42cb9fb13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fab6b935b6b4f9eaeb4872443b704cb4a9dd5b97acf83f9f67cd5e42cb9fb13", kill_on_drop: false }`
[INFO] [stdout] 3fab6b935b6b4f9eaeb4872443b704cb4a9dd5b97acf83f9f67cd5e42cb9fb13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] afe7009c0506328e9b002adf1d8b978401409a587a1bcf8a9078e575fae9f86c
[INFO] running `Command { std: "docker" "start" "-a" "afe7009c0506328e9b002adf1d8b978401409a587a1bcf8a9078e575fae9f86c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling HelloWorld v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `HelloWorld` 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: `hello_world`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `Command { std: "docker" "inspect" "afe7009c0506328e9b002adf1d8b978401409a587a1bcf8a9078e575fae9f86c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afe7009c0506328e9b002adf1d8b978401409a587a1bcf8a9078e575fae9f86c", kill_on_drop: false }`
[INFO] [stdout] afe7009c0506328e9b002adf1d8b978401409a587a1bcf8a9078e575fae9f86c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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] d314ddd29e708eb760bbcf972e016e14e747f3ca92fc16a021ff46cd70b73b74
[INFO] running `Command { std: "docker" "start" "-a" "d314ddd29e708eb760bbcf972e016e14e747f3ca92fc16a021ff46cd70b73b74", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: crate `HelloWorld` 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: `hello_world`
[INFO] [stderr] 
[INFO] [stderr] warning: `HelloWorld` (bin "HelloWorld" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.84s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/HelloWorld-1038ff85f3902725)
[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" "d314ddd29e708eb760bbcf972e016e14e747f3ca92fc16a021ff46cd70b73b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d314ddd29e708eb760bbcf972e016e14e747f3ca92fc16a021ff46cd70b73b74", kill_on_drop: false }`
[INFO] [stdout] d314ddd29e708eb760bbcf972e016e14e747f3ca92fc16a021ff46cd70b73b74