[INFO] cloning repository https://github.com/vlad-onis/vladon_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vlad-onis/vladon_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvlad-onis%2Fvladon_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvlad-onis%2Fvladon_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7eed74bf4cf280a9a97c54f322a6ac16b612281c
[INFO] checking vlad-onis/vladon_os against try#409ef99a7d4dc96ae91f65d4b48413ed174514d6 for pr-137633
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvlad-onis%2Fvladon_os" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vlad-onis/vladon_os on toolchain 409ef99a7d4dc96ae91f65d4b48413ed174514d6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vlad-onis/vladon_os
[INFO] finished tweaking git repo https://github.com/vlad-onis/vladon_os
[INFO] tweaked toml for git repo https://github.com/vlad-onis/vladon_os written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/vlad-onis/vladon_os 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" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68554fa9c562a8c80711aada77f8444d13e30ffef393f0b362cb11493d1c07fc
[INFO] running `Command { std: "docker" "start" "-a" "68554fa9c562a8c80711aada77f8444d13e30ffef393f0b362cb11493d1c07fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68554fa9c562a8c80711aada77f8444d13e30ffef393f0b362cb11493d1c07fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68554fa9c562a8c80711aada77f8444d13e30ffef393f0b362cb11493d1c07fc", kill_on_drop: false }`
[INFO] [stdout] 68554fa9c562a8c80711aada77f8444d13e30ffef393f0b362cb11493d1c07fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+409ef99a7d4dc96ae91f65d4b48413ed174514d6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf63d686f507c27dcc48998f5773c1fcfce0608b77320db085a112f54968ffe5
[INFO] running `Command { std: "docker" "start" "-a" "bf63d686f507c27dcc48998f5773c1fcfce0608b77320db085a112f54968ffe5", kill_on_drop: false }`
[INFO] [stderr]     Checking vladon_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 9  | |     loop {}
[INFO] [stdout] 10 | | }
[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/409ef99a7d4dc96ae91f65d4b48413ed174514d6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-4d5af82d47b2db3d.rlib
[INFO] [stdout]    = note: second definition in the local crate (`vladon_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vladon_os` (bin "vladon_os" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "bf63d686f507c27dcc48998f5773c1fcfce0608b77320db085a112f54968ffe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf63d686f507c27dcc48998f5773c1fcfce0608b77320db085a112f54968ffe5", kill_on_drop: false }`
[INFO] [stdout] bf63d686f507c27dcc48998f5773c1fcfce0608b77320db085a112f54968ffe5