[INFO] cloning repository https://github.com/ShirakamiEmmmer/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ShirakamiEmmmer/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShirakamiEmmmer%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShirakamiEmmmer%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c95a3e5877df2cdb7bbe2e36b402d161dec57a5
[INFO] checking ShirakamiEmmmer/rust_playground/1c95a3e5877df2cdb7bbe2e36b402d161dec57a5 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShirakamiEmmmer%2Frust_playground" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ShirakamiEmmmer/rust_playground on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ShirakamiEmmmer/rust_playground
[INFO] finished tweaking git repo https://github.com/ShirakamiEmmmer/rust_playground
[INFO] tweaked toml for git repo https://github.com/ShirakamiEmmmer/rust_playground written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ShirakamiEmmmer/rust_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df4076215b2ced3156bb2b5e4e5fba59c329f9999a0b482f5c513a0f15268cec
[INFO] running `Command { std: "docker" "start" "-a" "df4076215b2ced3156bb2b5e4e5fba59c329f9999a0b482f5c513a0f15268cec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df4076215b2ced3156bb2b5e4e5fba59c329f9999a0b482f5c513a0f15268cec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df4076215b2ced3156bb2b5e4e5fba59c329f9999a0b482f5c513a0f15268cec", kill_on_drop: false }`
[INFO] [stdout] df4076215b2ced3156bb2b5e4e5fba59c329f9999a0b482f5c513a0f15268cec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd13b77448a6cb2b1dbbb8f7ac6d0169bcf3059db59f8d380dc6ed99c063e760
[INFO] running `Command { std: "docker" "start" "-a" "cd13b77448a6cb2b1dbbb8f7ac6d0169bcf3059db59f8d380dc6ed99c063e760", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]  --> src/main.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 8 | |     loop {}
[INFO] [stdout] 9 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]   = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/f609b7e0586f81fefb3523e3e17adf779ac416be/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e0ee872a6f64065a.rlib
[INFO] [stdout]   = note: second definition in the local crate (`rust_playground`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_playground` (bin "rust_playground" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "cd13b77448a6cb2b1dbbb8f7ac6d0169bcf3059db59f8d380dc6ed99c063e760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd13b77448a6cb2b1dbbb8f7ac6d0169bcf3059db59f8d380dc6ed99c063e760", kill_on_drop: false }`
[INFO] [stdout] cd13b77448a6cb2b1dbbb8f7ac6d0169bcf3059db59f8d380dc6ed99c063e760