[INFO] cloning repository https://github.com/MonkeyDwwl/study_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MonkeyDwwl/study_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyDwwl%2Fstudy_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyDwwl%2Fstudy_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 868d174c0e8aeccc2342489a2e2d088bb21597f8
[INFO] testing MonkeyDwwl/study_rust against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMonkeyDwwl%2Fstudy_rust" "/workspace/builds/worker-94/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-94/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MonkeyDwwl/study_rust on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MonkeyDwwl/study_rust
[INFO] finished tweaking git repo https://github.com/MonkeyDwwl/study_rust
[INFO] tweaked toml for git repo https://github.com/MonkeyDwwl/study_rust written to /workspace/builds/worker-94/source/Cargo.toml
[INFO] crate git repo https://github.com/MonkeyDwwl/study_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c3673374dfc4b8ba885f5c49145ead45306016695738389d366452ded013f02
[INFO] running `Command { std: "docker" "start" "-a" "8c3673374dfc4b8ba885f5c49145ead45306016695738389d366452ded013f02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c3673374dfc4b8ba885f5c49145ead45306016695738389d366452ded013f02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c3673374dfc4b8ba885f5c49145ead45306016695738389d366452ded013f02", kill_on_drop: false }`
[INFO] [stdout] 8c3673374dfc4b8ba885f5c49145ead45306016695738389d366452ded013f02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85e58dd52f82974421e49f6af157967e94a8adf35b879ff8951d2409a526fde5
[INFO] running `Command { std: "docker" "start" "-a" "85e58dd52f82974421e49f6af157967e94a8adf35b879ff8951d2409a526fde5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling Hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `Hello_world` 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 7.97s
[INFO] running `Command { std: "docker" "inspect" "85e58dd52f82974421e49f6af157967e94a8adf35b879ff8951d2409a526fde5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85e58dd52f82974421e49f6af157967e94a8adf35b879ff8951d2409a526fde5", kill_on_drop: false }`
[INFO] [stdout] 85e58dd52f82974421e49f6af157967e94a8adf35b879ff8951d2409a526fde5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42c64b2b23d7395122c4c1c170bb0e073292aa722f94c02e3d57fe60fe6d0798
[INFO] running `Command { std: "docker" "start" "-a" "42c64b2b23d7395122c4c1c170bb0e073292aa722f94c02e3d57fe60fe6d0798", kill_on_drop: false }`
[INFO] [stderr]    Compiling Hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `Hello_world` 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 0.52s
[INFO] running `Command { std: "docker" "inspect" "42c64b2b23d7395122c4c1c170bb0e073292aa722f94c02e3d57fe60fe6d0798", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c64b2b23d7395122c4c1c170bb0e073292aa722f94c02e3d57fe60fe6d0798", kill_on_drop: false }`
[INFO] [stdout] 42c64b2b23d7395122c4c1c170bb0e073292aa722f94c02e3d57fe60fe6d0798
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-94/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4fb3a595d40c04ede6cf6c77d2dc55be5f1d70247e18f6029fe07d74af3e2bc5
[INFO] running `Command { std: "docker" "start" "-a" "4fb3a595d40c04ede6cf6c77d2dc55be5f1d70247e18f6029fe07d74af3e2bc5", kill_on_drop: false }`
[INFO] [stderr] warning: crate `Hello_world` 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: `Hello_world` (bin "Hello_world" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/Hello_world-73e353789967e5ac)
[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" "4fb3a595d40c04ede6cf6c77d2dc55be5f1d70247e18f6029fe07d74af3e2bc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fb3a595d40c04ede6cf6c77d2dc55be5f1d70247e18f6029fe07d74af3e2bc5", kill_on_drop: false }`
[INFO] [stdout] 4fb3a595d40c04ede6cf6c77d2dc55be5f1d70247e18f6029fe07d74af3e2bc5